SMA6J40A
Public Made by Adomby adom
Littelfuse 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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README
markdownSMA6J40A
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AC(SMA)
SMA6J40A from Littelfuse, 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 | Littelfuse |
| 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 | PPPM | 600 | W | 10/1000µs waveform (Fig.2) (Note 1), (Note 2) | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 3.3 | W | TL=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 60 | A | 8.3ms single half sine wave (Note 3) | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 25A, unidirectional only | 1 | ||
| Operating Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Breakdown Voltage (SMA6J40A, uni-directional) | VBR | 44.4 | 49.1 | V | @ IT = 1 mA | 2 | |
| Maximum Clamping Voltage (SMA6J40A) | VC | 64.5 | V | @ Ipp = 9.7 A | 2 | ||
| Maximum Peak Pulse Current (SMA6J40A) | Ipp | 9.7 | A | 2 | |||
| Maximum Reverse Leakage Current (SMA6J40A) | IR | 1 | µA | @ VR (reverse standoff voltage 40 V) | 2 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 30 | °C/W | Junction to lead | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 120 | °C/W | Junction to ambient | 1 | ||
| Breakdown Voltage Temperature Coefficient (series) | αT | 0.1 | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 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 • Pb-free E3 means 2nd level | 1 |
CAD (KiCad official)
- Symbol:
SMA6J40A - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
sma6j40a-etched.step/sma6j40a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sma6j40a.step/sma6j40a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
ea8185a7ca141b55, 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).