component
KBU804
Public Made by Adomby adom
Changjing Bridge Rectifiers, KBU. 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
markdownKBU804
Changjing · Bridge Rectifiers · KBU
KBU804 from Changjing, in a KBU. 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 | + | output | Positive DC output of the bridge rectifier; average rectified output current up to 8A (60Hz sine, R-load, Tc=100°C). |
| 2 | 2 | passive | AC input; VRRM 400V for KBU804, surge forward current IFSM 200A (60Hz sine, 1 cycle, Tj=25°C). |
| 3 | 3 | passive | Second AC input; VRRM 400V for KBU804, peak forward voltage 1.0V max per diode at IFM=4.0A. |
| 4 | - | output | Negative DC output of the bridge rectifier (return); peak reverse current 10µA max per diode at VRM=VRRM. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | KBU |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Forward Voltage | VFM | 1 | V | IFM=4.0A, Pulse measurement, Rating of per diode | 1 | ||
| Peak Reverse Current | IRRM | 10 | μA | VRM=VRRM, Pulse measurement, Rating of per diode | 1 | ||
| Repetitive Peak Reverse Voltage | VRRM | 400 | V | KBU804 (04 column) | 1 | ||
| Average Rectified Output Current | IO | 8 | A | 60Hz sine wave, R-load Tc=100℃ | 1 | ||
| Surge (Non-repetitive) Forward Current | IFSM | 200 | 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 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Junction Temperature | Tj | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
KBU804 - Footprint:
Diode_THT:Diode_Bridge_Vishay_KBU - 3D model: KBU (KiCad packages3D, STEP)
- 3D model files:
kbu804-etched.step/kbu804-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kbu804.step/kbu804.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (3 pp, sha256
7786994fb3f31bbd, retrieved 2026-10-22, 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).