component
3.0SMC28A
Public Made by Adomby adom
Littelfuse TVS, DO-214AB(SMCJ). 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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Contents
README
markdown3.0SMC28A
Littelfuse · TVS · DO-214AB(SMCJ)
3.0SMC28A from Littelfuse, in a DO-214AB(SMCJ). 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 marked by the color band (positive end) on the unidirectional 3.0SMC28A, with 28.0V reverse standoff voltage and 31.10V to 34.40V breakdown at 1mA. |
| 2 | Anode | passive | Anode terminal of the unidirectional 3.0SMC28A, which has a maximum clamping voltage of 59V at 470A peak pulse current (8/20µs) and a maximum forward voltage of 3.5V at 100A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB(SMCJ) |
| 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 (min/max) | VBR | 31.1 | 34.4 | V | @ IT = 1 mA | 2 | |
| Reverse Stand-off Voltage | VR | 28 | V | 2 | |||
| Maximum Clamping Voltage | VC | 59 | V | @ 8/20µS Ipp | 2 | ||
| Maximum Peak Pulse Current | Ipp | 470 | A | @ 8/20µS | 2 | ||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR | 2 | ||
| Test Current | IT | 1 | mA | 2 | |||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 100A for Unidirectional Only | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 6.5 | W | at TL=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 300 | A | 8.3ms single half sine wave, unidirectional only | 1 | ||
| Operating Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Breakdown Voltage Tolerance | VBR | -5 | 5 | % | 5% VBR voltage tolerance (A suffix) | 5 | |
| Breakdown Voltage Temperature Coefficient | αT | 0.1 | % | typical value | 1 | ||
| Thermal Resistance Junction to Lead | RθJL | 15 | °C/W | Typical | 1 | ||
| Thermal Resistance Junction to Ambient | RθJA | 75 | °C/W | Typical | 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 | 1 |
CAD (KiCad official)
- Symbol:
3.0SMC28A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB(SMCJ) (KiCad packages3D, STEP)
- 3D model files:
3-0smc28a-etched.step/3-0smc28a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);3-0smc28a.step/3-0smc28a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (5 pp, sha256
d0fac52bc3c1c9a4, 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).