component
5KP43A
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), P600. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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5KP43A
Littelfuse · ESD And Surge Protection (TVS/ESD) · P600
5KP43A from Littelfuse, in a P600. 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | P600 |
| Category | Circuit 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 (5KP43A, uni-directional) min/max | VBR | 47.8 | 52.8 | V | @ IT = 5 mA | 2 | |
| VBR voltage tolerance (A suffix, uni-directional) | VBR | -5 | 5 | % | Type code A: 5% VBR voltage tolerance | 6 | |
| Maximum clamping voltage | VC | 69.4 | V | @ IPP = 73.5 A | 2 | ||
| Maximum peak pulse current | IPP | 73.5 | A | 2 | |||
| Maximum reverse leakage current | IR | 2 | µA | @ VR = 43.0 V | 2 | ||
| Breakdown voltage temperature coefficient | αT | 0.1 | % | Typical value; VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 1 | ||
| Maximum instantaneous forward voltage | VF | 3.5 | V | @ 100 A, unidirectional only; single-die parts (stacked-die: 5.0 V) | 1 | ||
| Peak pulse power dissipation | PPPM | 5 | kW | 10/1000 µs test waveform (Fig.2) (Note 1) | 1 | ||
| Steady state power dissipation | PD | 8 | W | On infinite heat sink at TL = 75 ºC | 1 | ||
| Peak forward surge current | IFSM | 400 | A | 8.3 ms single half sine wave, unidirectional only (Note 2) | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 175 | °C | 1 | ||
| Reverse stand-off voltage | VR | 43 | V | Stand-off voltage as printed for 5KP43A (uni-directional) | 2 | ||
| Typical thermal resistance junction to lead | RθJL | 8 | °C/W | Typical | 1 | ||
| Typical thermal resistance junction to ambient | RθJA | 40 | °C/W | Typical | 1 |
CAD (KiCad official)
- Symbol:
5KP43A - Footprint:
Diode_THT:D_P600_R-6_P20.00mm_Horizontal - 3D model: P600 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
a0c9c30e73a4d50e, retrieved 2026-10-14, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).
# 5KP43A
**Littelfuse** · ESD And Surge Protection (TVS/ESD) · P600
5KP43A from Littelfuse, in a P600. 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | P600 |
| Category | Circuit 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 (5KP43A, uni-directional) min/max | VBR | 47.8 | | 52.8 | V | @ IT = 5 mA | 2 |
| VBR voltage tolerance (A suffix, uni-directional) | VBR | -5 | | 5 | % | Type code A: 5% VBR voltage tolerance | 6 |
| Maximum clamping voltage | VC | | | 69.4 | V | @ IPP = 73.5 A | 2 |
| Maximum peak pulse current | IPP | | | 73.5 | A | | 2 |
| Maximum reverse leakage current | IR | | | 2 | µA | @ VR = 43.0 V | 2 |
| Breakdown voltage temperature coefficient | αT | | 0.1 | | % | Typical value; VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 1 |
| Maximum instantaneous forward voltage | VF | | | 3.5 | V | @ 100 A, unidirectional only; single-die parts (stacked-die: 5.0 V) | 1 |
| Peak pulse power dissipation | PPPM | | | 5 | kW | 10/1000 µs test waveform (Fig.2) (Note 1) | 1 |
| Steady state power dissipation | PD | | | 8 | W | On infinite heat sink at TL = 75 ºC | 1 |
| Peak forward surge current | IFSM | | | 400 | A | 8.3 ms single half sine wave, unidirectional only (Note 2) | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 | | 175 | °C | | 1 |
| Reverse stand-off voltage | VR | | 43 | | V | Stand-off voltage as printed for 5KP43A (uni-directional) | 2 |
| Typical thermal resistance junction to lead | RθJL | | 8 | | °C/W | Typical | 1 |
| Typical thermal resistance junction to ambient | RθJA | | 40 | | °C/W | Typical | 1 |
## CAD (KiCad official)
- Symbol: `5KP43A`
- Footprint: `Diode_THT:D_P600_R-6_P20.00mm_Horizontal`
- 3D model: P600 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588942092454809600) (6 pp, sha256 `a0c9c30e73a4d50e`, retrieved 2026-10-14, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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).
[Datasheet PDF](docs/5kp43a-datasheet.pdf)