component
SMAJ33A-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
markdownSMAJ33A-JSM
JSMSEMI · ESD And Surge Protection (TVS/ESD) · SMA
SMAJ33A-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 terminal of the unipolar TVS diode, listed as pin 1 in the PINNING table; the datasheet states no pin-specific electrical limit for this pin. |
| 2 | Anode | passive | Anode terminal of the unipolar TVS diode, listed as pin 2 in the PINNING table; the datasheet states no pin-specific electrical limit, only the device maximum ratings. |
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 with a 10/1000μs waveform | PPPM | 400 | W | 10/1000μs waveform, *1 (FIG.1) | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | °C | 1 | ||
| Typical Thermal Resistance junction to ambient | RθJA | 70 | °C/W | *2: device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area | 1 | ||
| Typical Thermal Resistance junction to case | RθJC | 25 | °C/W | *2: device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area | 1 | ||
| Typical Thermal Resistance junction to lead | RθJL | 30 | °C/W | *2: device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area | 1 | ||
| Breakdown Voltage (SMAJ33A, minimum) | VBR | 36.7 | V | @ IT (test current 1 mA) | 2 | ||
| Breakdown Voltage (SMAJ33A, maximum) | VBR | 40.6 | V | @ IT (test current 1 mA) | 2 | ||
| Max. Peak Pulse Current (SMAJ33A) | IPP_MAX | 5.5 | A | 2 | |||
| Max. Clamping Voltage (SMAJ33A) | VC_MAX | 53.3 | V | @ IPP | 2 | ||
| Reverse Standoff Voltage (SMAJ33A) | VRWM | 33 | V | 2 |
CAD (KiCad official)
- Symbol:
SMAJ33A-JSM - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
smaj33a-jsm-etched.step/smaj33a-jsm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj33a-jsm.step/smaj33a-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 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).