component
SMAJ440A
Public Made by Adomby adom
ZHIDE ESD And Surge Protection (TVS/ESD), DO-214AC(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
markdownSMAJ440A
ZHIDE · ESD And Surge Protection (TVS/ESD) · DO-214AC(SMA)
SMAJ440A from ZHIDE, 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, marked by the color band on the unidirectional SMAJ440A (VRWM 440 V, VBR 492-543 V at 1 mA, VC max 713 V at 0.6 A IPP). |
| 2 | A | passive | Anode, the end opposite the color band on the unidirectional SMAJ440A; forward surge IFSM 40 A (8.3 ms half sine). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ZHIDE |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Stand-off Voltage | VRWM | 440 | V | SMAJ440A | 2 | ||
| Breakdown Voltage | VBR | 492 | 543 | V | @ IT = 1 mA | 2 | |
| Max. Clamping Voltage | VC | 713 | V | @ IPP = 0.6 A | 2 | ||
| Max. Peak Pulse Current | IPP | 0.6 | A | 10/1000 us waveform | 2 | ||
| Max. Reverse Leakage | IR | 1 | uA | @ VRWM | 2 | ||
| Test Current | IT | 1 | mA | 2 | |||
| Maximum instantaneous forward voltage | VF | 6.5 | V | at 25 A, unidirectional only; VF<6.5V for VBR>201V | 1 | ||
| Peak power dissipation | PPP | 400 | W | 10/1000 us waveform | 1 | ||
| Power dissipation on infinite heatsink | PD | 3 | W | TL = 75 °C | 1 | ||
| Peak forward surge current | IFSM | 40 | A | 8.3 ms single half sinewave, unidirectional only | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
SMAJ440A - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
smaj440a-etched.step/smaj440a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj440a.step/smaj440a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ZHIDE datasheet (3 pp, sha256
58664a01272ef59d, 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).