component
P4SMA27A-E3
Public Made by Adomby adom
Vishay Intertech TVS, SMA(DO-214AC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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| viewers | 4d ago |
| p4sma27a-e3-etched.glb | 16d ago |
| p4sma27a-e3-etched.step | 16d ago |
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| p4sma27a-e3.lbr | 4d ago |
| p4sma27a-e3.step | 16d ago |
| package.json | 16d ago |
| page.json | 16d ago |
| README.md | 16d ago |
P4SMA27A-E3
Vishay Intertech · TVS · SMA(DO-214AC)
P4SMA27A-E3 from Vishay Intertech, in a SMA(DO-214AC). 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 terminal at the cathode-band end of the uni-directional P4SMA27A, which is connected to the protected line and has a 23.1 V stand-off voltage, 25.7 V to 28.4 V breakdown at 1.0 mA, and a 37.5 V maximum clamping voltage at 10.7 A. |
| 2 | A | passive | Anode terminal at the end opposite the cathode band of the uni-directional P4SMA27A, normally connected to ground or the return, and rated for 40 A peak forward surge current (8.3 ms half sine-wave). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | SMA(DO-214AC) |
| 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 | 25.7 | 28.4 | V | at IT = 1.0 mA, TA = 25 °C | 2 | |
| Test current | IT | 1 | mA | TA = 25 °C | 2 | ||
| Stand-off voltage | VWM | 23.1 | V | TA = 25 °C | 2 | ||
| Maximum reverse leakage | ID | 1 | μA | at VWM, TA = 25 °C | 2 | ||
| Maximum peak pulse current | IPPM | 10.7 | A | 10/1000 μs waveform, TA = 25 °C | 2 | ||
| Maximum clamping voltage | VC | 37.5 | V | at IPPM, TA = 25 °C | 2 | ||
| Maximum temperature coefficient of VBR | 0.096 | %/°C | 2 | ||||
| Peak power dissipation | PPPM | 400 | W | 10/1000 μs waveform, TA = 25 °C | 1 | ||
| Power dissipation on infinite heatsink | PD | 3.3 | W | TA = 50 °C | 1 | ||
| Peak forward surge current | IFSM | 40 | A | 8.3 ms single half sine-wave, uni-directional only | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -65 | 150 | °C | 1 | ||
| Thermal resistance, junction to ambient | RθJA | 120 | °C/W | Mounted on minimum recommended pad layout | 3 | ||
| Thermal resistance, junction to lead | RθJL | 30 | °C/W | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | Terminals: matte tin plated leads, solderable per J-STD-002 and JESD 22-B102 | 1 |
CAD (KiCad official)
- Symbol:
P4SMA27A-E3 - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files:
p4sma27a-e3-etched.step/p4sma27a-e3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);p4sma27a-e3.step/p4sma27a-e3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (6 pp, sha256
63e69aece4f8bff0, retrieved 2026-10-23, tier: manufacturer) - 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).