component
US1D
Public Made by Adomby adom
MDD Microdiode Semiconductor Fast Recovery / High Efficiency Diodes, SMA. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownUS1D
MDD Microdiode Semiconductor · Fast Recovery / High Efficiency Diodes · SMA
US1D from MDD Microdiode Semiconductor, in a SMA. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode, the end marked with the polarity band on the body; the 200 V part (US1D) blocks up to VRRM/VDC = 200 V in reverse and passes 1.0 A average forward current. |
| 2 | A | passive | Anode, the end opposite the polarity band; carries forward current up to 1.0 A average (30 A peak surge for 8.3 ms) with VF of 1.0 V at 1.0 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MDD Microdiode Semiconductor |
| Package | SMA |
| Category | Diodes |
| Pins | 2 |
CAD (KiCad official)
- Symbol:
US1D - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
us1d-etched.step/us1d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);us1d.step/us1d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MDD Microdiode Semiconductor datasheet (3 pp, sha256
697dd8d49fb65a82, retrieved 2026-10-12, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).