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UMW SS54A
Public Made by Adomby adom
UMW Schottky Diodes, SMA(DO-214AC). 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
markdownUMW SS54A
UMW · Schottky Diodes · SMA(DO-214AC)
UMW SS54A from UMW, in a SMA(DO-214AC). 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 terminal, on the bar side of the diode symbol; the device blocks up to 40 V (VRRM/VDC) for SS54A. |
| 2 | A | passive | Anode terminal, on the triangle side of the diode symbol; carries 5 A maximum average forward current with 0.55 V maximum forward voltage at 5 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SMA(DO-214AC) |
| Category | Diodes |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Maximum Recurrent Peak Reverse Voltage (SS54A) | VRRM | 40 | V | 2 | |||
| Maximum RMS Voltage (SS54A) | VRMS | 28 | V | 2 | |||
| Maximum DC Blocking Voltage (SS54A) | VDC | 40 | V | 2 | |||
| Maximum Average Forward Rectified Current | IF(AV) | 5 | A | 2 | |||
| Peak Forward Surge Current | IFSM | 125 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC method) | 2 | ||
| Maximum DC Reverse Current | IR | 1 | mA | At rated DC blocking voltage, TA=25°C | 2 | ||
| Maximum DC Reverse Current | IR | 50 | mA | At rated DC blocking voltage, TA=100°C | 2 | ||
| Junction Temperature Range | TJ | -55 | 150 | °C | 2 | ||
| Storage Temperature Range | TSTG | -55 | 150 | °C | 2 | ||
| Typical Thermal Resistance | RθJA | 60 | °C/W | P.C.B. mounted with 2.0" x 2.0" (5 x 5 cm) copper pad areas (Note 2) | 2 |
CAD (KiCad official)
- Symbol:
UMW SS54A - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files:
umw-ss54a-etched.step/umw-ss54a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);umw-ss54a.step/umw-ss54a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (6 pp, sha256
338df5b2e355f96c, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).