component
GBU4M
Public Made by Adomby adom
LRC Bridge Rectifiers, GBU. Pinout reviewed by a person 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
markdownGBU4M
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);gbu4m.step/gbu4m.glbare 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).