component
SMAJ15A-JSM
Public Made by Adomby adom
JSMSEMI ESD And Surge Protection (TVS/ESD), 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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README
markdownSMAJ15A-JSM
JSMSEMI · ESD And Surge Protection (TVS/ESD) · SMA
SMAJ15A-JSM from JSMSEMI, 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 | Cathode | passive | Cathode of the unidirectional TVS diode; connect to the protected positive line (SMAJ15A: reverse standoff 15 V, breakdown 16.7-18.5 V at 1 mA, max clamping 24.4 V). |
| 2 | Anode | passive | Anode of the unidirectional TVS diode; connect to ground/return of the protected line. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | 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 |
|---|---|---|---|---|---|---|---|
| Peak power dissipation (10/1000µs) | PPPM | 400 | W | 10/1000μs waveform, non-repetitive, TA=25°C | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | °C | 1 | ||
| Breakdown voltage | VBR | 16.7 | 18.5 | V | @ IT = 1 mA | 2 | |
| Test current | IT | 1 | mA | 2 | |||
| Reverse standoff voltage | VRWM | 15 | V | 2 | |||
| Maximum reverse leakage | IR_MAX | 1 | µA | @ VRWM | 2 | ||
| Maximum peak pulse current | IPP_MAX | 16.4 | A | 2 | |||
| Maximum clamping voltage | VC_MAX | 24.4 | V | @ IPP | 2 | ||
| Thermal resistance junction to ambient | RθJA | 70 | °C/W | Mounted on pcb with 10 mm x 20 mm x 0.1 mm copper pad | 1 | ||
| Thermal resistance junction to case | RθJC | 25 | °C/W | Mounted on pcb with 10 mm x 20 mm x 0.1 mm copper pad | 1 | ||
| Thermal resistance junction to lead | RθJL | 30 | °C/W | Mounted on pcb with 10 mm x 20 mm x 0.1 mm copper pad | 1 |
CAD (KiCad official)
- Symbol:
SMAJ15A-JSM - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
smaj15a-jsm-etched.step/smaj15a-jsm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj15a-jsm.step/smaj15a-jsm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (5 pp, sha256
070cf4c2f9c4dec1, 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).