component
SMAJ30CAHM2G
Public Made by Adomby adom
Taiwan Semiconductor TVS, SMA. 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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Contents
README
markdownSMAJ30CAHM2G
Taiwan Semiconductor · TVS · SMA
SMAJ30CAHM2G from Taiwan Semiconductor, in a 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 | A1 | passive | Bidirectional TVS terminal with electrical characteristics identical in both directions (SMAJ30A values: VWM 30 V, VBR 33.3-36.8 V at 1 mA, VC 48.4 V at 8.3 A, 400 W peak pulse power at 10/1000 µs). |
| 2 | A2 | passive | Second bidirectional TVS terminal, interchangeable with the other terminal because the C/CA suffix part has no cathode band and the same characteristics in both directions (VWM 30 V, 400 W peak pulse power at 10/1000 µs). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Taiwan Semiconductor |
| Package | SMA |
| 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 | 33.3 | 36.8 | V | @ IT = 1 mA, pulse test PW=30 ms | 2 | |
| Test current | IT | 1 | mA | 2 | |||
| Working stand-off voltage | VWM | 30 | V | 2 | |||
| Maximum reverse leakage current | IR | 1 | µA | @ VWM, pulse test PW=30 ms | 2 | ||
| Maximum peak impulse current | IPPM | 8.3 | A | 10/1000µs waveform | 2 | ||
| Maximum clamping voltage | VC | 48.4 | V | @ IPPM, 10/1000µs waveform | 2 | ||
| Peak power dissipation | PPK | 400 | W | TA=25°C, tp=1ms | 1 | ||
| Steady state power dissipation | PD | 1 | W | 1 | |||
| Peak forward surge current | IFSM | 40 | A | 8.3 ms single half sine-wave superimposed on rated load | 1 | ||
| Operating junction temperature range | TJ | -55 | 150 | °C | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | °C | 1 |
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 | ● Matte tin plated leads, solderable per J-STD-002 ● Meet JESD 201 class 2 whisker test | 1 |
CAD (KiCad official)
- Symbol:
SMAJ30CAHM2G - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
smaj30cahm2g-etched.step/smaj30cahm2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj30cahm2g.step/smaj30cahm2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Taiwan Semiconductor datasheet (8 pp, sha256
6a5d121244fc257f, 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).