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GBU404
Public Made by Adomby adom
Changjing Bridge Rectifiers, GBU. 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
markdownGBU404
Changjing · Bridge Rectifiers · GBU
GBU404 from Changjing, 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 | Positive DC output of the bridge rectifier, the leftmost lead in the package drawing; average rectified output current is 4 A with heatsink at Tc=100°C (2.4 A without heatsink at Ta=100°C). |
| 2 | 2 | passive | AC input terminal of the bridge; VRRM is 400 V for GBU404 and maximum RMS voltage is 280 V. |
| 3 | 3 | passive | Second AC input terminal of the bridge; VRRM is 400 V for GBU404 and maximum RMS voltage is 280 V. |
| 4 | - | passive | Negative DC output of the bridge rectifier, the rightmost lead in the package drawing; non-repetitive surge forward current IFSM is 150 A (60 Hz half sine, 1 cycle, Tj=25°C). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 |
|---|---|---|---|---|---|---|---|
| Repetitive Peak Reverse Voltage | VRRM | 400 | V | 1 | |||
| Maximum RMS Voltage | VRMS | 280 | V | 1 | |||
| Average Rectified Output Current | IO | 4 | A | 60Hz sine wave, R-load, with heatsink Tc=100℃ | 1 | ||
| Average Rectified Output Current | IO | 2.4 | A | 60Hz sine wave, R-load, without heatsink Ta=100℃ | 1 | ||
| Surge (Non-repetitive) Forward Current | IFSM | 150 | A | 60HZ sine wave, 1 cycle, Tj=25℃ | 1 | ||
| Current Squared Time | I2t | 93 | A2S | 1ms≤t<8.3ms, Tj=25℃, Rating of per diode | 1 | ||
| Peak Forward Voltage | VFM | 1 | V | IFM=2A, Pulse measurement, Rating of per diode | 1 | ||
| Peak Reverse Current | IRRM | 10 | μA | VRM=VRRM, Pulse measurement, Rating of per diode | 1 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Junction Temperature | Tj | -55 | 150 | ℃ | 1 | ||
| Dielectric Strength | Vdis | 2 | KV | Terminals to case, AC 1 minute | 1 | ||
| Mounting Torque | Tor | 5 | 8 | kg·cm | Recommend torque: 5kg·cm | 1 | |
| Thermal Resistance, junction to ambient | RθJ-A | 23 | ℃/W | Between junction and ambient, Without heatsink | 1 | ||
| Thermal Resistance, junction to case | RθJ-C | 5.5 | ℃/W | Between junction and case, With heatsink | 1 |
CAD (KiCad official)
- Symbol:
GBU404 - Footprint:
Diode_THT:Diode_Bridge_Vishay_GBU - 3D model: GBU (KiCad packages3D, STEP)
- 3D model files:
gbu404-etched.step/gbu404-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);gbu404.step/gbu404.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (3 pp, sha256
9d3e7e5a40e803ad, retrieved 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).