Import Materials#

This example shows how to import materials.

Import the required packages#

[1]:

import json
from pathlib import Path
import tempfile

from IPython.display import display
from ansys.aedt.core.downloads import download_file
import pandas as pd

from pyedb import Edb

AEDT_VERSION = "2024.2"
NG_MODE = False

Download the example PCB data.

[2]:

temp_folder = tempfile.TemporaryDirectory(suffix=".ansys")
file_edb = download_file(source="edb/ANSYS-HSD_V1.aedb", destination=temp_folder.name)

Load example layout.#

[3]:

edbapp = Edb(file_edb, edbversion=AEDT_VERSION)

PyAEDT INFO: Logger is initialized in EDB.
PyAEDT INFO: legacy v0.34.3
PyAEDT INFO: Python version 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
PyAEDT INFO: Database ANSYS-HSD_V1.aedb Opened in 2024.2
PyAEDT INFO: Cell main Opened
PyAEDT INFO: Builder was initialized.
PyAEDT INFO: EDB initialized.

Review materials from layout#

Get materials from layout in a dictionary. Materials are exported together with stadckup.

[4]:

data_cfg = edbapp.configuration.get_data_from_db(stackup=True)

PyAEDT INFO: Getting data from layout database.

[5]:

df = pd.DataFrame(data=data_cfg["stackup"]["materials"])
display(df)

	name	permittivity	conductivity	dielectric_loss_tangent	mass_density	poisson_ratio	specific_heat	thermal_conductivity
0	copper	0.00	58000000.0	0.000	0.0	0.00	0.0	0.000
1	FR4_epoxy	4.40	0.0	0.020	1900.0	0.28	1150.0	0.294
2	Megtron4	3.77	0.0	0.005	0.0	0.00	0.0	0.000
3	Megtron4_2	3.47	0.0	0.006	0.0	0.00	0.0	0.000
4	Megtron4_3	4.20	0.0	0.005	0.0	0.00	0.0	0.000
5	Solder Resist	3.00	0.0	0.000	0.0	0.00	0.0	0.000

Add a new material#

[6]:

data_cfg["stackup"]["materials"].append(
    {"name": "soldermask", "permittivity": 3.3, "dielectric_loss_tangent": 0.02},
)

Edit existing material properties#

[7]:

data_cfg["stackup"]["materials"][1]["name"] = "fr4_epoxy"
data_cfg["stackup"]["materials"][1]["dielectric_loss_tangent"] = 0.015

Review modified materials#

[8]:

df = pd.DataFrame(data=data_cfg["stackup"]["materials"])
display(df)

	name	permittivity	conductivity	dielectric_loss_tangent	magnetic_loss_tangent	mass_density	permeability	poisson_ratio	specific_heat	thermal_conductivity
0	copper	0.00	58000000.0	0.000	0.0	0.0	0.0	0.00	0.0	0.000
1	fr4_epoxy	4.40	0.0	0.015	0.0	1900.0	0.0	0.28	1150.0	0.294
2	Megtron4	3.77	0.0	0.005	0.0	0.0	0.0	0.00	0.0	0.000
3	Megtron4_2	3.47	0.0	0.006	0.0	0.0	0.0	0.00	0.0	0.000
4	Megtron4_3	4.20	0.0	0.005	0.0	0.0	0.0	0.00	0.0	0.000
5	Solder Resist	3.00	0.0	0.000	0.0	0.0	0.0	0.00	0.0	0.000
6	soldermask	3.30	NaN	0.020	NaN	NaN	NaN	NaN	NaN	NaN

Write material definition into a json file#

[9]:

file_cfg = Path(temp_folder.name) / "edb_configuration.json"
with open(file_cfg, "w") as f:
    json.dump(data_cfg, f, indent=4, ensure_ascii=False)

Load materials from json configuration file#

[10]:

edbapp.configuration.load(str(file_cfg), apply_file=True)

[10]:

<pyedb.configuration.cfg_data.CfgData at 0x2d6f575cc70>

Review materials from layout#

[11]:

edbapp.materials.materials

[11]:

{'copper': <pyedb.dotnet.edb_core.materials.Material at 0x2d69cd548b0>,
 'fr4_epoxy': <pyedb.dotnet.edb_core.materials.Material at 0x2d6f575e080>,
 'Megtron4': <pyedb.dotnet.edb_core.materials.Material at 0x2d6a0dc2ad0>,
 'Megtron4_2': <pyedb.dotnet.edb_core.materials.Material at 0x2d6a0dc2b30>,
 'Megtron4_3': <pyedb.dotnet.edb_core.materials.Material at 0x2d6a0dc2bc0>,
 'Solder Resist': <pyedb.dotnet.edb_core.materials.Material at 0x2d6a0dc2b90>,
 'soldermask': <pyedb.dotnet.edb_core.materials.Material at 0x2d6a0dc2a70>}

Check modified material properties#

[12]:

edbapp.materials["fr4_epoxy"].loss_tangent

[12]:

0.015

Save and close Edb#

The temporary folder will be deleted once the execution of this script is finished. Replace edbapp.save() with edbapp.save_as(“C:/example.aedb”) to keep the example project.

[13]:

edbapp.save()
edbapp.close()

[13]:

True