# P0640TA

**SEMIWARE** · Thyristor Surge Suppressors (TSS) · DO-214AC(SMA)

P0640TA from SEMIWARE, in a DO-214AC(SMA). 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 | 1 | passive | Terminal 1 of the bidirectional thyristor surge suppressor (schematic symbol pin 1); P0640TA has VDRM 58 V, IDRM 5 uA max, VS 77 V max at 100 kV/s. |
| 2 | 2 | passive | Terminal 2 of the bidirectional thyristor surge suppressor (schematic symbol pin 2); P0640TA has IT 2.2 A, VT 4 V max, IH 50 mA min. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SEMIWARE |
| Package | DO-214AC(SMA) |
| 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 |
|---|---|---|---|---|---|---|---|
| Repetitive peak off-state current | IDRM |  |  | 5 | uA |  | 1 |
| Breakover voltage (Vs) | VS |  |  | 77 | V | Vs measured at 100KV/S (note 1) | 1 |
| Breakover current | IS |  |  | 800 | mA |  | 1 |
| On-state voltage | VT |  |  | 2.2 | V |  | 1 |
| Holding current | IH | 50 |  |  | mA |  | 1 |
| Off-state capacitance | CO |  | 50 |  | pF | Off-state capacitance measured in V=2V, V=1V, F=1MHz DC RMS (note 2) | 1 |
| Peak pulse current 2x10us | IPP |  |  | 150 | A | Series surge rating, waveform 2x10us | 1 |
| Peak pulse current 8x20us | IPP |  |  | 150 | A | Series surge rating, waveform 8x20us | 1 |
| Peak pulse voltage 10x700us | VPP |  |  | 3000 | V | Series surge rating, waveform 10x700us | 1 |
| Peak pulse current 10x560us | IPP |  |  | 50 | A | Series surge rating, waveform 10x560us | 1 |
| Peak pulse current 10x1000us | IPP |  |  | 45 | A | Series surge rating, waveform 10x1000us | 1 |
| Non-repetitive surge current 60Hz | ITSM |  |  | 20 | A | 60Hz | 1 |
| Critical rate of rise of on-state current | dIT/dt |  |  | 500 | A/us |  | 1 |
| Operating junction temperature | TJ | -40 |  | 150 | ℃ |  | 2 |
| Storage temperature range | TS | -40 |  | 150 | ℃ |  | 2 |
| Junction to ambient thermal resistance on printed circuit | RθJA |  | 90 |  | ℃/W | Junction to ambient on printed circuit | 2 |

## CAD (KiCad official)

- Symbol: `P0640TA`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `p0640ta-etched.step` / `p0640ta-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p0640ta.step` / `p0640ta.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [SEMIWARE datasheet](docs/p0640ta-datasheet.pdf) (5 pp, sha256 `cda28c23fd86d761`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).

[Datasheet PDF](docs/p0640ta-datasheet.pdf)