component
SMAJ33AHE3_A
Public Made by Adomby adom
Vishay Intertech ESD And Surge Protection (TVS/ESD), DO-214AC(SMA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownSMAJ33AHE3_A
Vishay Intertech · ESD And Surge Protection (TVS/ESD) · DO-214AC(SMA)
SMAJ33AHE3_A from Vishay Intertech, 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak pulse power dissipation (10/1000 μs waveform) | PPPM | 400 | W | 10/1000 μs waveform (fig. 1) | 1 | ||
| Power dissipation on infinite heatsink | PD | 3.3 | W | TA = 50 °C | 1 | ||
| Peak forward surge current, unidirectional only | IFSM | 40 | A | 8.3 ms single half sine-wave | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | °C | 1 | ||
| Breakdown voltage VBR (unidirectional SMAJ33A) | VBR | 36.7 | 40.6 | V | at IT 1.0 mA | 2 | |
| Maximum reverse leakage (unidirectional SMAJ33A) | ID | 1 | μA | at VWM 33 V | 2 | ||
| Maximum peak pulse surge current (unidirectional SMAJ33A) | IPPM | 7.5 | A | surge current waveform per fig. 3 and derate per fig. 2 (note 2) | 2 | ||
| Maximum clamping voltage (unidirectional SMAJ33A) | VC | 53.3 | V | at IPPM | 2 | ||
| Maximum temperature coefficient of VBR (unidirectional SMAJ33A) | 0.1 | %/°C | 2 | ||||
| Typical thermal resistance, junction to ambient | RθJA | 120 | °C/W | mounted on minimum recommended pad layout | 3 | ||
| Typical thermal resistance, junction to lead | RθJL | 30 | °C/W | 3 |
CAD (KiCad official)
- Symbol:
SMAJ33AHE3_A - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
smaj33ahe3-a-etched.step/smaj33ahe3-a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj33ahe3-a.step/smaj33ahe3-a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (6 pp, sha256
50e0027bea50acec, retrieved 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).