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UMW SS310B

Public Made by Adom

by adom

UMW Schottky Barrier Diodes (SBD), SMB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Contents

README

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UMW SS310B

UMW · Schottky Barrier Diodes (SBD) · SMB

UMW SS310B from UMW, in a SMB. 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 Cathode passive Cathode end of the SMB package, marked by the color band on the body; the datasheet gives the SS310B ratings as 100 V repetitive peak reverse voltage and 3.0 A average forward rectified current.
2 A passive Anode terminal of the SMB package; the SS310B is rated for a 0.75 to 0.85 V instantaneous forward voltage at 3.0 A and a 0.2 mA maximum reverse current at 25°C rated DC blocking voltage (table values for the device).

Key specifications

Parameter Value
Manufacturer UMW
Package SMB
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 repetitive peak reverse voltage VRRM 100 V 2
Maximum RMS voltage VRMS 71 V 2
Maximum DC blocking voltage VDC 100 V 2
Maximum average forward rectified current I(AV) 3 A 0.375"(9.5mm) lead length (See Fig.1) 2
Peak forward surge current IFSM 80 A 8.3ms single half sine-wave superimposed on rated load (JEDEC method) 2
Maximum instantaneous forward voltage VF 0.85 V at 3.0 A (Note 1) 2
Typical thermal resistance, junction to ambient RθJA 55 °C/W Note 2: P.C.B. mounted 0.55 X 0.55"(14 X 14mm) copper pad areas 2
Typical thermal resistance, junction to lead RθJL 17 °C/W Note 2: P.C.B. mounted 0.55 X 0.55"(14 X 14mm) copper pad areas 2
Junction temperature range TJ -65 150 °C 2
Storage temperature range TSTG -65 150 °C 2

CAD (KiCad official)

  • Symbol: UMW SS310B
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: umw-ss310b-etched.step / umw-ss310b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); umw-ss310b.step / umw-ss310b.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: UMW datasheet (6 pp, sha256 6e9e8ddece4da02b, retrieved 2026-10-21, 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