component
SMAJ3.3CA
Public Made by Adomby adom
hongjiacheng Electrostatic And Surge Protection (TVS/ESD), 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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Contents
README
markdownSMAJ3.3CA
hongjiacheng · Electrostatic And Surge Protection (TVS/ESD) · SMA
SMAJ3.3CA from hongjiacheng, 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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| 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 (bidirectional), minimum | VBR | 5.2 | V | IT = 10 mA | 2 | ||
| Breakdown voltage VBR (bidirectional), maximum | VBR | 6 | V | IT = 10 mA | 2 | ||
| Maximum clamping voltage | VC | 8 | V | @IPP = 43.8 A | 2 | ||
| Reverse leakage current | IR | 800 | μA | @VRWM = 3.3 V | 2 | ||
| Peak pulse current | IPP | 43.8 | A | 10/1000µs waveform (Note 1, Fig.3) | 2 | ||
| Peak pulse power dissipation | PPPM | 400 | W | 10/1000µs waveform (Fig.1) (Note 1), (Note 2) | 1 | ||
| Power dissipation on infinite heat sink | PM(AV) | 1 | W | TL = 75°C | 1 | ||
| Peak forward surge current | IFSM | 40 | A | 8.3 ms single half sine wave (Note 3) | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | °C | 1 | ||
| Breakdown voltage tolerance (5% device, suffix A) | VBR | -5 | 5 | % | Suffix 'A' denotes 5% tolerance device (Note 1, page 3) | 3 | |
| Maximum temperature coefficient of VBR | ΔVBR | 0.1 | % × VBR@25℃ × ΔT | Typical maximum; ΔVBR = 0.1% × VBR@25℃ × ΔT | 1 | ||
| Typical thermal resistance junction to lead | RθJ-L | 30 | °C/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJ-A | 120 | °C/W | 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 lead-free Plated •Halogen free and RoHS compliant | 1 |
CAD (KiCad official)
- Symbol:
SMAJ3.3CA - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
smaj3-3ca-etched.step/smaj3-3ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj3-3ca.step/smaj3-3ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (5 pp, sha256
3ff5a7b8618e9ea1, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal 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).