component

GBU4M

Public Made by Adom

by adom

LRC Bridge Rectifiers, GBU. Pinout reviewed by a person 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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GBU4M

LRC · Bridge Rectifiers · GBU

GBU4M from LRC, in a GBU. 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 - passive DC negative output of the bridge, marked '-' on the package body; reverse voltage rating is 1000V for GBU4M with 4A average forward current.
2 AC1 passive AC input terminal, marked '~' on the package body; RMS input voltage up to 700V for GBU4M.
3 AC2 passive AC input terminal, marked '~' on the package body; RMS input voltage up to 700V for GBU4M.
4 + passive DC positive output of the bridge, marked '+' on the package body; average rectified output current 4A (Tc=100℃).

Key specifications

Parameter Value
Manufacturer LRC
Package GBU
Category Diodes
Pins 4

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 1000 V 1
Maximum RMS voltage VRMS 700 V 1
Maximum non-repetitive voltage 1100 V 1
Maximum DC blocking voltage VDC 1000 V 1
Maximum DC reverse current at rated DC blocking voltage IR 5 µA TA=25℃ 1
Maximum DC reverse current at rated DC blocking voltage IR 500 µA TA=125℃ 1
Maximum average forward rectified output current Io 4 A Tc=100℃(1) 1
Maximum average forward rectified output current (unit mounted on P.C.B. without heat-sink) Io 3 A Ta=40℃(2) 1
Peak forward surge current 8.3ms single half sine-wave superimposed on rated load IFSM 150 A 8.3ms single half sine-wave superimposed on rated load 1
Rating of fusing I2t 93 A2sec t<8.3ms 1
Dielectric strength terminals to case Vdia 2.5 KV AC 1 minute, Current 1mA 1
Max instantaneous forward voltage VF 1.05 V at 2.0A 1
Maximum thermal resistance junction to ambient per leg (on P.C.B. without heat-sink) RθJA 22 ℃/W on P.C.B. without heat-sink 1
Maximum thermal resistance junction to case per leg (on Al plate heat-sink) RθJC 3.5 ℃/W per leg on Al plate heat-sink 1
Operating junction temperature TJ -55 150 ℃ 1
Storage temperature Tstg -55 150 ℃ 1
Mounting torque rating Tor 0.8 N.m Rating torque 1
Suggested mounting torque Tor 0.45 0.65 N.m 1

CAD (KiCad official)

  • Symbol: GBU4M
  • Footprint: Diode_THT:Diode_Bridge_Vishay_GBU
  • 3D model: GBU (KiCad packages3D, STEP)
  • 3D model files: gbu4m-etched.step / gbu4m-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); gbu4m.step / gbu4m.glb are the bare package body.

Provenance

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

  • Datasheet: LRC datasheet (4 pp, sha256 f4df8f6ab99b1449, retrieved 2026-10-21, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF