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UMW SS54A

Public Made by Adom

by adom

UMW Schottky Diodes, SMA(DO-214AC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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UMW 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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); umw-ss54a.step / umw-ss54a.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF