`EdbPadstacks`#

class pyedb.dotnet.database.padstack.EdbPadstacks(p_edb)#

Bases: object

Manages EDB methods for nets management accessible from Edb.padstacks property.

Examples

>>> from pyedb import Edb
>>> edbapp = Edb("myaedbfolder", edbversion="2021.2")
>>> edb_padstacks = edbapp.padstacks

Overview#

Methods

`int_to_pad_type`	Convert an integer to an EDB.PadGeometryType.
`int_to_geometry_type`	Convert an integer to an EDB.PadGeometryType.
`find_instance_by_id`	Find a padstack instance by database id.
`create_circular_padstack`	Create a circular padstack.
`create_dielectric_filled_backdrills`	Create dielectric-filled back-drills for through-hole vias.
`delete_padstack_instances`	Delete padstack instances by net names.
`set_solderball`	Set solderball for the given PadstackInstance.
`create_coax_port`	Create HFSS 3Dlayout coaxial lumped port on a pastack
`get_pinlist_from_component_and_net`	Retrieve pins given a component’s reference designator and net name.
`get_pad_parameters`	Get Padstack Parameters from Pin or Padstack Definition.
`set_all_antipad_value`	Set all anti-pads from all pad-stack definition to the given value.
`check_and_fix_via_plating`	Check for minimum via plating ration value, values found below the minimum one are replaced by default
`get_via_instance_from_net`	Get the list for EDB vias from a net name list.
`create_padstack`	Create a padstack.
`create`	Create a padstack.
`duplicate_padstack`	Duplicate a padstack.
`duplicate`	Duplicate a padstack.
`place`	Place a via.
`place_padstack`	Place the padstack.
`remove_pads_from_padstack`	Remove the Pad from a padstack on a specific layer by setting it as a 0 thickness circle.
`set_pad_property`	Set pad and antipad properties of the padstack.
`get_instances`	Get padstack instances by conditions.
`get_padstack_instance_by_net_name`	Get a list of padstack instances by net name.
`get_reference_pins`	Search for reference pins using given criteria.
`get_padstack_instances_rtree_index`	Returns padstack instances Rtree index.
`get_padstack_instances_id_intersecting_polygon`	Returns the list of padstack instances ID intersecting a given bounding box and nets.
`get_padstack_instances_intersecting_bounding_box`	Returns the list of padstack instances ID intersecting a given bounding box and nets.
`merge_via`	Evaluate padstack instances included on the provided point list and replace all by single instance.
`merge_via_along_lines`	Replace padstack instances along lines into a single polygon.
`reduce_via_in_bounding_box`	reduce the number of vias intersecting bounding box and nets by x and y samples.
`reduce_via_by_density`	Reduce the number of vias by density. Keep only one via which is closest to the center of the cell. The cells

Properties

`db`	Db object.
`definitions`	Padstack definitions.
`padstacks`	Padstacks via padstack definitions.
`instances`	Dictionary of all padstack instances (vias and pins).
`instances_by_name`	Dictionary of all padstack instances (vias and pins) by name.
`pins`	Dictionary of all pins instances (belonging to component).
`vias`	Dictionary of all vias instances not belonging to component.
`padstack_instances`	List of padstack instances.
`pingroups`	All Layout Pin groups.
`pad_type`	Return a PadType Enumerator.

Static methods

dbscan

density based spatial clustering for padstack instances

Special methods

__getitem__

Get a padstack definition or instance from the Edb project.

Import detail#

from pyedb.dotnet.database.padstack import EdbPadstacks

Property detail#

property EdbPadstacks.db#: Db object.

property EdbPadstacks.definitions#

Padstack definitions.

Returns:

dict[str, pyedb.dotnet.database.edb_data.padstacks_data.EdbPadstack]: List of definitions via padstack definitions.

property EdbPadstacks.padstacks#

Padstacks via padstack definitions.

Deprecated since version 0.6.58.

Use definitions() property instead.

Returns:

dict[str, pyedb.dotnet.database.edb_data.EdbPadstack]: List of definitions via padstack definitions.

property EdbPadstacks.instances#

Dictionary of all padstack instances (vias and pins).

Returns:

dict[int, dotnet.database.edb_data.padstacks_data.EDBPadstackInstance]: List of padstack instances.

property EdbPadstacks.instances_by_name#

Dictionary of all padstack instances (vias and pins) by name.

Returns:

dict[str, dotnet.database.edb_data.padstacks_data.EDBPadstackInstance]: List of padstack instances.

property EdbPadstacks.pins#

Dictionary of all pins instances (belonging to component).

Returns:

dic[str, dotnet.database.edb_data.definitions.EDBPadstackInstance]: Dictionary of EDBPadstackInstance Components.

Examples

>>> edbapp = dotnet.Edb("myproject.aedb")
>>> pin_net_name = edbapp.pins[424968329].netname

property EdbPadstacks.vias#

Dictionary of all vias instances not belonging to component.

Returns:

dic[str, dotnet.database.edb_data.definitions.EDBPadstackInstance]: Dictionary of EDBPadstackInstance Components.

Examples

>>> edbapp = dotnet.Edb("myproject.aedb")
>>> pin_net_name = edbapp.pins[424968329].netname

property EdbPadstacks.padstack_instances#

List of padstack instances.

Deprecated since version 0.6.58.

Use instances() property instead.

Returns:

dict[str, dotnet.database.edb_data.padstacks_data.EDBPadstackInstance]: List of padstack instances.

property EdbPadstacks.pingroups#

All Layout Pin groups.

Returns:

list: List of all layout pin groups.

property EdbPadstacks.pad_type#: Return a PadType Enumerator.

Method detail#

EdbPadstacks.__getitem__(name)#

Get a padstack definition or instance from the Edb project.

Parameters:

namestr, int

Returns:

pyedb.dotnet.database.cell.hierarchy.component.EDBComponent

EdbPadstacks.int_to_pad_type(val=0)#

Convert an integer to an EDB.PadGeometryType.

Parameters:

valint

Returns:

object: EDB.PadType enumerator value.

EdbPadstacks.int_to_geometry_type(val=0)#

Convert an integer to an EDB.PadGeometryType.

Parameters:

valint

Returns:

object: EDB.PadGeometryType enumerator value.

EdbPadstacks.find_instance_by_id(value: int)#

Find a padstack instance by database id.

Parameters:

valueint

EdbPadstacks.create_circular_padstack(padstackname=None, holediam='300um', paddiam='400um', antipaddiam='600um', startlayer=None, endlayer=None)#

Create a circular padstack.

Parameters:

padstacknamestr, optional: Name of the padstack. The default is None.
holediamstr, optional: Diameter of the hole with units. The default is "300um".
paddiamstr, optional: Diameter of the pad with units. The default is "400um".
antipaddiamstr, optional: Diameter of the antipad with units. The default is "600um".
startlayerstr, optional: Starting layer. The default is None, in which case the top is the starting layer.
endlayerstr, optional: Ending layer. The default is None, in which case the bottom is the ending layer.

Returns:

str: Name of the padstack if the operation is successful.

EdbPadstacks.create_dielectric_filled_backdrills(layer: str, diameter: float | str, material: str, permittivity: float, padstack_instances: List[pyedb.dotnet.database.edb_data.padstacks_data.EDBPadstackInstance] | None = None, padstack_definition: str | List[str] | None = None, dielectric_loss_tangent: float | None = None, nets: str | List[str] | None = None) → bool#

Create dielectric-filled back-drills for through-hole vias.

Back-drilling (a.k.a. controlled-depth drilling) is used to remove the unused via stub that acts as an unterminated transmission-line segment, thereby improving signal-integrity at high frequencies. This routine goes one step further: after the stub is removed the resulting cylindrical cavity is completely filled with a user-specified dielectric. The fill material restores mechanical rigidity, prevents solder-wicking, and keeps the original via’s electrical characteristics intact on the remaining, still-plated, portion.

Parameters:

layerstr: Signal layer name up to which the back-drill is performed (inclusive). The drill always starts on the bottom-most signal layer of the stack-up.
diameterfloat or str: Finished hole diameter for the back-drill. A numeric value is interpreted in the database length unit; a string such as "0.3mm" is evaluated with units.
materialstr: Name of the dielectric material that fills the drilled cavity. If the material does not yet exist in the central material library it is created on the fly.
permittivityfloat: Relative permittivity \(\varepsilon_{\mathrm{r}}\) used when the material has to be created. Must be positive.
padstack_instanceslist [PadstackInstance ], optional: Explicit list of via instances to process. When provided, padstack_definition and nets are ignored for filtering.
padstack_definitionstr or list [str ], optional: Pad-stack definition(s) to process. If omitted, all through-hole definitions are considered.
dielectric_loss_tangentfloat, optional: Loss tangent \(\tan\delta\) used when the material has to be created. Defaults to 0.0.
netsstr or list [str ], optional: Net name(s) used to filter vias. If omitted, vias belonging to any net are processed.

Returns:

bool: True when at least one back-drill was successfully created. False if no suitable via was found or any error occurred.

Raises:

ValueError: If material is empty or if permittivity is non-positive when a new material must be created.

Notes

The routine is safe to call repeatedly: existing back-drills are not duplicated because the *_BD definition name is deterministic.
The original via keeps its pad-stack definition and net assignment; only its unused stub is removed.
The back-drill is not subtracted from anti-pads or plane clearances; the filling material is assumed to be electrically invisible at the frequencies of interest.

Examples

Create back-drills on all vias belonging to two specific pad-stack definitions and two DDR4 nets:

>>> edb.padstacks.create_dielectric_filled_backdrills(
...     layer="L3",
...     diameter="0.25mm",
...     material="EPON_827",
...     permittivity=3.8,
...     dielectric_loss_tangent=0.015,
...     padstack_definition=["VIA_10MIL", "VIA_16MIL"],
...     nets=["DDR4_DQ0", "DDR4_DQ1"],
... )
True

EdbPadstacks.delete_padstack_instances(net_names)#

Delete padstack instances by net names.

Parameters:

net_namesstr, list: Names of the nets to delete.

Returns:

bool: True when successful, False when failed.

References

>>> Edb.padstacks.delete_padstack_instances(net_names=["GND"])

EdbPadstacks.set_solderball(padstackInst, sballLayer_name, isTopPlaced=True, ballDiam=0.0001)#

Set solderball for the given PadstackInstance.

Parameters:

padstackInstEdb.Cell.Primitive.PadstackInstance or int: Padstack instance id or object.
sballLayer_namestr,: Name of the layer where the solder ball is placed. No default values.
isTopPlacedbool, optional.: Bollean triggering is the solder ball is placed on Top or Bottom of the layer stackup.
ballDiamdouble, optional,: Solder ball diameter value.

Returns:

bool

EdbPadstacks.create_coax_port(padstackinstance, use_dot_separator=True, name=None)#

Create HFSS 3Dlayout coaxial lumped port on a pastack Requires to have solder ball defined before calling this method.

Parameters:

padstackinstanceEdb.Cell.Primitive.PadstackInstance or int: Padstack instance object.
use_dot_separatorbool, optional: Whether to use . as the separator for the naming convention, which is [component][net][pin]. The default is True. If False, _ is used as the separator instead.
namestr: Port name for overwriting the default port-naming convention, which is [component][net][pin]. The port name must be unique. If a port with the specified name already exists, the default naming convention is used so that port creation does not fail.

Returns:

str: Terminal name.

EdbPadstacks.get_pinlist_from_component_and_net(refdes=None, netname=None)#

Retrieve pins given a component’s reference designator and net name.

Parameters:

refdesstr, optional: Reference designator of the component. The default is None.
netnamestr optional: Name of the net. The default is None.

Returns:

dict: Dictionary of pins if the operation is successful. False is returned if the net does not belong to the component.

EdbPadstacks.get_pad_parameters(pin, layername, pad_type=0)#

Get Padstack Parameters from Pin or Padstack Definition.

Parameters:

pinEdb.definition.PadstackDef or Edb.definition.PadstackInstance: Pin or PadstackDef on which get values.
layernamestr: Layer on which get properties.
pad_typeint: Pad Type.

Returns:

tuple: Tuple of (GeometryType, ParameterList, OffsetX, OffsetY, Rot).

EdbPadstacks.set_all_antipad_value(value)#

Set all anti-pads from all pad-stack definition to the given value.

Parameters:

valuefloat, str: Anti-pad value.

Returns:

bool: True when successful, False if an anti-pad value fails to be assigned.

EdbPadstacks.check_and_fix_via_plating(minimum_value_to_replace=0.0, default_plating_ratio=0.2)#

Check for minimum via plating ration value, values found below the minimum one are replaced by default plating ratio.

Parameters:

minimum_value_to_replacefloat: Plating ratio that is below or equal to this value is to be replaced with the value specified for the next parameter. Default value 0.0.
default_plating_ratiofloat: Default value to use for plating ratio. The default value is 0.2.

Returns:

bool: True when successful, False if an anti-pad value fails to be assigned.

EdbPadstacks.get_via_instance_from_net(net_list=None)#

Get the list for EDB vias from a net name list.

Parameters:

net_liststr or list: The list of the net name to be used for filtering vias. If no net is provided the command will return an all vias list.

Returns:

list of Edb.Cell.Primitive.PadstackInstance: List of EDB vias.

EdbPadstacks.create_padstack(padstackname=None, holediam='300um', paddiam='400um', antipaddiam='600um', startlayer=None, endlayer=None, antipad_shape='Circle', x_size='600um', y_size='600um', corner_radius='300um', offset_x='0.0', offset_y='0.0', rotation='0.0', has_hole=True, pad_offset_x='0.0', pad_offset_y='0.0', pad_rotation='0.0')#

Create a padstack.

Deprecated since version 0.6.62.

Use create() method instead.

Parameters:

padstacknamestr, optional: Name of the padstack. The default is None.
holediamstr, optional: Diameter of the hole with units. The default is "300um".
paddiamstr, optional: Diameter of the pad with units. The default is "400um".
antipaddiamstr, optional: Diameter of the antipad with units. The default is "600um".
startlayerstr, optional: Starting layer. The default is None, in which case the top is the starting layer.
endlayerstr, optional: Ending layer. The default is None, in which case the bottom is the ending layer.
antipad_shapestr, optional: Shape of the antipad. The default is "Circle". Options are "Circle" and "Bullet".
x_sizestr, optional: Only applicable to bullet shape. The default is "600um".
y_sizestr, optional: Only applicable to bullet shape. The default is "600um".
corner_radius: Only applicable to bullet shape. The default is "300um".
offset_xstr, optional: X offset of antipad. The default is "0.0".
offset_ystr, optional: Y offset of antipad. The default is "0.0".
rotationstr, optional: rotation of antipad. The default is "0.0".
has_holebool, optional: Whether this padstack has a hole.

Returns:

str: Name of the padstack if the operation is successful.

EdbPadstacks.create(padstackname=None, holediam='300um', paddiam='400um', antipaddiam='600um', pad_shape='Circle', antipad_shape='Circle', x_size='600um', y_size='600um', corner_radius='300um', offset_x='0.0', offset_y='0.0', rotation='0.0', has_hole=True, pad_offset_x='0.0', pad_offset_y='0.0', pad_rotation='0.0', pad_polygon=None, antipad_polygon=None, polygon_hole=None, start_layer=None, stop_layer=None, add_default_layer=False, anti_pad_x_size='600um', anti_pad_y_size='600um', hole_range='upper_pad_to_lower_pad')#

Create a padstack.

Parameters:

padstacknamestr, optional: Name of the padstack. The default is None.
holediamstr, optional: Diameter of the hole with units. The default is "300um".
paddiamstr, optional: Diameter of the pad with units, used with "Circle" shape. The default is "400um".
antipaddiamstr, optional: Diameter of the antipad with units. The default is "600um".
pad_shapestr, optional: Shape of the pad. The default is "Circle. Options are "Circle", "Rectangle" and "Polygon".
antipad_shapestr, optional: Shape of the antipad. The default is "Circle". Options are "Circle" "Rectangle" and "Bullet".
x_sizestr, optional: Only applicable to bullet and rectangle shape. The default is "600um".
y_sizestr, optional: Only applicable to bullet and rectangle shape. The default is "600um".
corner_radius: Only applicable to bullet shape. The default is "300um".
offset_xstr, optional: X offset of antipad. The default is "0.0".
offset_ystr, optional: Y offset of antipad. The default is "0.0".
rotationstr, optional: rotation of antipad. The default is "0.0".
has_holebool, optional: Whether this padstack has a hole.
pad_offset_xstr, optional: Padstack offset in X direction.
pad_offset_ystr, optional: Padstack offset in Y direction.
pad_rotationstr, optional: Padstack rotation.
start_layerstr, optional: Start layer of the padstack definition.
stop_layerstr, optional: Stop layer of the padstack definition.
add_default_layerbool, optional: Add "Default" to padstack definition. Default is False.
anti_pad_x_sizestr, optional: Only applicable to bullet and rectangle shape. The default is "600um".
anti_pad_y_sizestr, optional: Only applicable to bullet and rectangle shape. The default is "600um".
hole_rangestr, optional: Define the padstack hole range. Arguments supported, "through", "begin_on_upper_pad", "end_on_lower_pad", "upper_pad_to_lower_pad".

Returns:

str: Name of the padstack if the operation is successful.

EdbPadstacks.duplicate_padstack(target_padstack_name, new_padstack_name='')#

Duplicate a padstack.

Deprecated since version 0.6.62.

Use duplicate() method instead.

Parameters:

target_padstack_namestr: Name of the padstack to be duplicated.
new_padstack_namestr, optional: Name of the new padstack.

Returns:

str: Name of the new padstack.

EdbPadstacks.duplicate(target_padstack_name, new_padstack_name='')#

Duplicate a padstack.

Parameters:

target_padstack_namestr: Name of the padstack to be duplicated.
new_padstack_namestr, optional: Name of the new padstack.

Returns:

str: Name of the new padstack.

EdbPadstacks.place(position, definition_name, net_name='', via_name='', rotation=0.0, fromlayer=None, tolayer=None, solderlayer=None, is_pin=False)#

Place a via.

Parameters:

positionlist: List of float values for the [x,y] positions where the via is to be placed.
definition_namestr: Name of the padstack definition.
net_namestr, optional: Name of the net. The default is "".
via_namestr, optional: The default is "".
rotationfloat, str, optional: Rotation of the padstack in degrees. The default is 0.
fromlayer: The default is None.
tolayer: The default is None.
solderlayer: The default is None.
is_pinbool, optional: Whether if the padstack is a pin or not. Default is False.

Returns:

dotnet.database.edb_data.padstacks_data.EDBPadstackInstance

EdbPadstacks.place_padstack(position, definition_name, net_name='', via_name='', rotation=0.0, fromlayer=None, tolayer=None, solderlayer=None, is_pin=False)#

Place the padstack.

Deprecated since version 0.6.62.

Use place() method instead.

Parameters:

positionlist: List of float values for the [x,y] positions where the via is to be placed.
definition_namestr: Name of the padstack definition.
net_namestr, optional: Name of the net. The default is "".
via_namestr, optional: The default is "".
rotationfloat, optional: Rotation of the padstack in degrees. The default is 0.
fromlayer: The default is None.
tolayer: The default is None.
solderlayer: The default is None.

Returns:

EdbPadstacks.remove_pads_from_padstack(padstack_name, layer_name=None)#

Remove the Pad from a padstack on a specific layer by setting it as a 0 thickness circle.

Parameters:

padstack_namestr: padstack name
layer_namestr, optional: Layer name on which remove the PadParameters. If None, all layers will be taken.

Returns:

bool: True if successful.

EdbPadstacks.set_pad_property(padstack_name, layer_name=None, pad_shape='Circle', pad_params=0, pad_x_offset=0, pad_y_offset=0, pad_rotation=0, antipad_shape='Circle', antipad_params=0, antipad_x_offset=0, antipad_y_offset=0, antipad_rotation=0)#

Set pad and antipad properties of the padstack.

Parameters:

padstack_namestr: Name of the padstack.
layer_namestr, optional: Name of the layer. If None, all layers will be taken.
pad_shapestr, optional: Shape of the pad. The default is "Circle". Options are "Circle", "Square", "Rectangle", "Oval" and "Bullet".
pad_paramsstr, optional: Dimension of the pad. The default is "0".
pad_x_offsetstr, optional: X offset of the pad. The default is "0".
pad_y_offsetstr, optional: Y offset of the pad. The default is "0".
pad_rotationstr, optional: Rotation of the pad. The default is "0".
antipad_shapestr, optional: Shape of the antipad. The default is "0".
antipad_paramsstr, optional: Dimension of the antipad. The default is "0".
antipad_x_offsetstr, optional: X offset of the antipad. The default is "0".
antipad_y_offsetstr, optional: Y offset of the antipad. The default is "0".
antipad_rotationstr, optional: Rotation of the antipad. The default is "0".

Returns:

bool: True if successful.

EdbPadstacks.get_instances(name=None, pid=None, definition_name=None, net_name=None, component_reference_designator=None, component_pin=None)#

Get padstack instances by conditions.

Parameters:

namestr, optional: Name of the padstack.
pidint, optional: Id of the padstack.
definition_namestr, list, optional: Name of the padstack definition.
net_namestr, optional: The net name to be used for filtering padstack instances.
component_pin: str, optional: Pin Number of the component.
Returns
——-
list: List of dotnet.database.edb_data.padstacks_data.EDBPadstackInstance.

EdbPadstacks.get_padstack_instance_by_net_name(net_name)#

Get a list of padstack instances by net name.

Parameters:

net_namestr: The net name to be used for filtering padstack instances.

Returns:

list: List of dotnet.database.edb_data.padstacks_data.EDBPadstackInstance.

EdbPadstacks.get_reference_pins(positive_pin, reference_net='gnd', search_radius=0.005, max_limit=0, component_only=True)#

Search for reference pins using given criteria.

Parameters:

positive_pinEDBPadstackInstance: Pin used for evaluating the distance on the reference pins found.
reference_netstr, optional: Reference net. The default is "gnd".
search_radiusfloat, optional: Search radius for finding padstack instances. The default is 5e-3.
max_limitint, optional: Maximum limit for the padstack instances found. The default is 0, in which case no limit is applied. The maximum limit value occurs on the nearest reference pins from the positive one that is found.
component_onlybool, optional: Whether to limit the search to component padstack instances only. The default is True. When False, the search is extended to the entire layout.

Returns:

list: List of dotnet.database.edb_data.padstacks_data.EDBPadstackInstance.

Examples

>>> edbapp = Edb("target_path")
>>> pin = edbapp.components.instances["J5"].pins["19"]
>>> reference_pins = edbapp.padstacks.get_reference_pins(positive_pin=pin, reference_net="GND",
>>> search_radius=5e-3, max_limit=0, component_only=True)

EdbPadstacks.get_padstack_instances_rtree_index(nets=None)#

Returns padstack instances Rtree index.

Parameters:

netsstr or list, optional: net name of list of nets name applying filtering on padstack instances selection. If None is provided all instances are included in the index. Default value is None.

Returns:

Rtree index object.

EdbPadstacks.get_padstack_instances_id_intersecting_polygon(points, nets=None, padstack_instances_index=None)#

Returns the list of padstack instances ID intersecting a given bounding box and nets.

Parameters:

bounding_boxtuple or list.: bounding box, [x1, y1, x2, y2]
netsstr or list, optional: net name of list of nets name applying filtering on padstack instances selection. If None is provided all instances are included in the index. Default value is None.
padstack_instances_indexoptional, Rtree object.: Can be provided optionally to prevent computing padstack instances Rtree index again.

Returns:

List of padstack instances ID intersecting the bounding box.

EdbPadstacks.get_padstack_instances_intersecting_bounding_box(bounding_box, nets=None, padstack_instances_index=None)#

Returns the list of padstack instances ID intersecting a given bounding box and nets.

Parameters:

bounding_boxtuple or list.: bounding box, [x1, y1, x2, y2]
netsstr or list, optional: net name of list of nets name applying filtering on padstack instances selection. If None is provided all instances are included in the index. Default value is None.
padstack_instances_indexoptional, Rtree object.: Can be provided optionally to prevent computing padstack instances Rtree index again.

Returns:

List of padstack instances ID intersecting the bounding box.

EdbPadstacks.merge_via(contour_boxes, net_filter=None, start_layer=None, stop_layer=None)#

Evaluate padstack instances included on the provided point list and replace all by single instance.

Parameters:

contour_boxesList[List[List[float, float]]]: Nested list of polygon with points [x,y].
net_filteroptional: List[str: net_name] apply a net filter, nets included in the filter are excluded from the via merge.
start_layeroptional, str: Padstack instance start layer, if None the top layer is selected.
stop_layeroptional, str: Padstack instance stop layer, if None the bottom layer is selected.

EdbPadstacks.merge_via_along_lines(net_name='GND', distance_threshold=0.005, minimum_via_number=6, selected_angles=None, padstack_instances_id=None)#

Replace padstack instances along lines into a single polygon.

Detect all padstack instances that are placed along lines and replace them by a single polygon based one forming a wall shape. This method is designed to simplify meshing on via fence usually added to shield RF traces on PCB.

Parameters:

net_namestr: Net name used for detected padstack instances. Default value is "GND".
distance_thresholdfloat, None, optional: If two points in a line are separated by a distance larger than distance_threshold, the line is divided in two parts. Default is 5e-3 (5mm), in which case the control is not performed.
minimum_via_numberint, optional: The minimum number of points that a line must contain. Default is 6.
selected_angleslist[int, float]: Specify angle in degrees to detected, for instance [0, 180] is only detecting horizontal and vertical lines. Other values can be assigned like 45 degrees. When None is provided all lines are detected. Default value is None.
padstack_instances_idList[int]: List of padstack instances ID’s to include. If None, the algorithm will scan all padstack instances belonging to the specified net. Default value is None.

Returns:

bool: List[int], list of created padstack instances id.

EdbPadstacks.reduce_via_in_bounding_box(bounding_box, x_samples, y_samples, nets=None)#

reduce the number of vias intersecting bounding box and nets by x and y samples.

Parameters:

bounding_boxtuple or list.: bounding box, [x1, y1, x2, y2]
x_samplesint
y_samplesint
netsstr or list, optional: net name of list of nets name applying filtering on padstack instances selection. If None is provided all instances are included in the index. Default value is None.

Returns:

bool: True when succeeded False when failed. <

static EdbPadstacks.dbscan(padstack: Dict[int, List[float]], max_distance: float = 0.001, min_samples: int = 5) → Dict[int, List[str]]#

density based spatial clustering for padstack instances

Parameters:

padstackdict.: padstack id: [x, y]
max_distance: float: maximum distance between two points to be included in one cluster
min_samples: int: minimum number of points that a cluster must have

Returns:

dict: clusters {cluster label: [padstack ids]} <

EdbPadstacks.reduce_via_by_density(padstacks: List[int], cell_size_x: float = 0.001, cell_size_y: float = 0.001, delete: bool = False) → tuple[List[int], List[List[List[float]]]]#

Reduce the number of vias by density. Keep only one via which is closest to the center of the cell. The cells are automatically populated based on the input vias.

Parameters:

padstacks: List[int]: List of padstack ids to be reduced.
cell_size_xfloat: Width of each grid cell (default is 1e-3).
cell_size_yfloat: Height of each grid cell (default is 1e-3).
delete: bool: If True, delete vias that are not kept (default is False).

Returns:

List[int]: IDs of vias kept after reduction.
List[List[float]]: coordinates for grid lines (for plotting).

EdbPadstacks#

Overview#

Import detail#

Property detail#

Method detail#

`EdbPadstacks`#