component
P4KE550A-HF
Public Made by Adomby adom
Comchip TVS, DO-41. 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
markdownP4KE550A-HF
Comchip · TVS · DO-41
P4KE550A-HF from Comchip, in a DO-41. 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 | K | passive | Cathode lead, marked by the color band on the unidirectional P4KE550A-HF; connect to the positive side of the line to protect (VRWM 470.3 V, VBR 522.5 to 577.5 V at 1 mA). |
| 2 | A | passive | Anode lead at the end opposite the color band; connect to the return/ground side (maximum clamping voltage 759.0 V at the peak pulse current given in the table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Comchip |
| Package | DO-41 |
| Category | TVS/Fuse/Board Level Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage | VBR | 522.5 | 577.5 | V | @ IT = 1 mA | 3 | |
| Test current | IT | 1 | mA | VBR test current | 3 | ||
| Working peak reverse voltage | VRWM | 470.3 | V | 3 | |||
| Maximum clamping voltage | VC | 759 | V | @IPP | 3 | ||
| Maximum surge current | IPP | 0.53 | A | 10/1000μs waveform | 3 | ||
| Peak power dissipation | PPP | 400 | W | 10/1000μs waveform (Note 1), TA=25°C | 1 | ||
| Power dissipation on infinite heatsink | PD | 1 | W | TL=75°C | 1 | ||
| Peak forward surge current | IFSM | 40 | A | 8.3ms single half sine-wave, unidirectional only | 1 | ||
| Maximum instantaneous forward voltage | VF | 5 | V | 25 A, unidirectional only; VBR>201V | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
P4KE550A-HF - Footprint:
Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal - 3D model: DO-41 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Comchip datasheet (4 pp, sha256
32615a418c4024be, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).