# 20KPA48CA

**amsem** · ESD And Surge Protection (TVS/ESD) · P600

20KPA48CA from amsem, 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 | A1 | passive | Axial lead terminal of the bidirectional 20KPA48CA TVS (48V reverse standoff, 53.6V min breakdown at 5mA, 79.4V max clamping at 254.4A); polarity-free, interchangeable with the other lead. |
| 2 | A2 | passive | Axial lead terminal of the bidirectional 20KPA48CA TVS; no color band cathode marking on bidirectional types, so it is interchangeable with the other lead. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | amsem |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Stand-off Voltage | VR |  | 48 |  | V | 20KPA48CA | 2 |
| Breakdown Voltage | VBR | 53.6 |  |  | V | @ IT | 2 |
| Test Current | IT |  | 5 |  | mA |  | 2 |
| Maximum Reverse Leakage | IR |  |  | 2 | µA | @ VR | 2 |
| Maximum Clamping Voltage | VC |  |  | 79.4 | V | @ IPP | 2 |
| Maximum Peak Pulse Current | IPP |  |  | 254.4 | A | 10/1000us waveform | 2 |
| Peak Pulse Power Dissipation | PPPM | 20000 |  |  | W | 10/1000us waveform (Note 1, Fig.1), TA=25°C | 1 |
| Steady State Power Dissipation | PM(AV) |  |  | 1 | W | TL=75°C, lead lengths .375" (9.5mm) | 1 |
| Peak Forward Surge Current | IFSM |  |  | 400 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC method) | 1 |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `20KPA48CA`
- 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:** [amsem datasheet](docs/20kpa48ca-datasheet.pdf) (5 pp, sha256 `17d079e65a328df2`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/20kpa48ca-datasheet.pdf)