mirror of
https://github.com/diodeinc/pcb.git
synced 2026-09-14 20:17:19 +08:00
Akhil Velagapudi
256bf1df69
* Use small KiCad symbols for stdlib generics * Add color variants for stdlib LED symbols
112 lines
3.5 KiB
Python
112 lines
3.5 KiB
Python
"""
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Generic rectifier diode.
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This module covers both small-signal / signaling diodes and power rectifiers.
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"""
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load("../io.zen", "io")
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load("../interfaces.zen", "Net")
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load("../units.zen", "Current", "Voltage")
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load("../utils.zen", "format_value")
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# Package JEDEC Legacy
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# SMF DO-219AB SMF
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# SMA DO-214AC SMA
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# SMB DO-214AA SMB
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# SMC DO-214AB SMC
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# SOD-123FL SOD-123FL -
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# SOD-123 SOD-123 -
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# SOD-323 SOD-323 -
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# SOD-523 SOD-523 -
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Package = enum("DO-219AB", "DO-214AC", "DO-214AA", "DO-214AB", "SOD-123FL", "SOD-123", "SOD-323", "SOD-523")
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Technology = enum("PN", "Schottky")
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package = config(Package, default=Package("DO-214AC"), optional=False)
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technology = config(Technology, default=Technology("PN"))
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reverse_voltage = config(Voltage, help="Maximum repetitive reverse voltage")
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# IF(AV): continuous average forward current. Treat as a thermal class proxy,
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# not as a guaranteed pulsed or unconstrained operating current.
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forward_current = config(Current, optional=True, help="IF(AV) continuous average forward current")
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forward_voltage = config(Voltage, optional=True, help="Maximum forward voltage drop")
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properties = {
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"value": format_value(forward_current, reverse_voltage, technology, "Rectifier"),
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"package": package,
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"technology": technology,
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"reverse_voltage": reverse_voltage,
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}
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if forward_current:
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properties["forward_current"] = forward_current
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if forward_voltage:
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properties["forward_voltage"] = forward_voltage
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A = io(Net)
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K = io(Net)
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def _symbol_name(technology: Technology) -> str:
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if technology == Technology("Schottky"):
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return "D_Schottky_Small"
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return "D_Small"
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def _symbol(technology: Technology) -> str:
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return "../kicad-symbols/Device.kicad_symdir/" + _symbol_name(technology) + ".kicad_sym"
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def _footprint(package: Package) -> str:
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kicad_footprints = {
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Package("DO-219AB"): "../kicad-footprints/Diode_SMD.pretty/D_SMF.kicad_mod",
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Package("DO-214AC"): "../kicad-footprints/Diode_SMD.pretty/D_SMA.kicad_mod",
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Package("DO-214AA"): "../kicad-footprints/Diode_SMD.pretty/D_SMB.kicad_mod",
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Package("DO-214AB"): "../kicad-footprints/Diode_SMD.pretty/D_SMC.kicad_mod",
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Package("SOD-123FL"): "../kicad-footprints/Diode_SMD.pretty/D_SOD-123F.kicad_mod",
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Package("SOD-123"): "../kicad-footprints/Diode_SMD.pretty/D_SOD-123.kicad_mod",
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Package("SOD-323"): "../kicad-footprints/Diode_SMD.pretty/D_SOD-323.kicad_mod",
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Package("SOD-523"): "../kicad-footprints/Diode_SMD.pretty/D_SOD-523.kicad_mod",
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}
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return kicad_footprints[package]
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def _spice_subcircuit_name(technology: Technology):
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if technology == Technology("Schottky"):
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return "D_Schottky"
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return "D"
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def _spice_args(technology: Technology):
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if technology == Technology("Schottky"):
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return {
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"IS": "1e-8",
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"N": "1.2",
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"RS": "5m",
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"CJO": "2p",
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}
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return {
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"IS": "1e-14",
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"N": "1.0",
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"RS": "10m",
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"CJO": "1p",
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}
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Component(
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name="D",
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prefix="D",
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symbol=Symbol(_symbol(technology)),
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footprint=File(_footprint(package)),
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spice_model=SpiceModel(
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"spice/Diode.lib",
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_spice_subcircuit_name(technology),
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nets=[A, K],
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args=_spice_args(technology),
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),
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properties=properties,
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type="rectifier",
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pins={
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"A": A,
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"K": K,
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},
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)
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