component
TPSMC27A
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
markdownTPSMC27A
Littelfuse · TVS · DO-214AB(SMCJ)
TPSMC27A 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 | K | passive | Cathode of the unidirectional TVS diode, marked by the cathode band, with VR 23.10V, VBR 25.70V (min 23.10... see review) and VC 37.5V at Ipp 40.5A for TPSMC27A. |
| 2 | A | passive | Anode of the unidirectional TVS diode, with maximum instantaneous forward voltage VF of 3.5V at 100A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB(SMCJ) |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 25.7 | 28.4 | V | @ IT = 1 mA | 2 | |
| Reverse Stand-off Voltage | VR | 23.1 | V | 2 | |||
| Maximum Clamping Voltage | VC | 37.5 | V | @ Ipp = 40.5 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 40.5 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR | 2 | ||
| Test Current | IT | 1 | mA | 2 | |||
| Maximum Instantaneous Forward Voltage (Unidirectional only) | VF | 3.5 | V | at 100A | 1 | ||
| Peak Pulse Power Dissipation | PPPM | 1500 | W | 10/1000µs waveform | 1 | ||
| Power Dissipation on Infinite Heat Sink | PM(AV) | 6.5 | W | TA=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 200 | A | 8.3ms single half sine wave, unidirectional only | 1 | ||
| Operating Junction and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 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:
TPSMC27A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB(SMCJ) (KiCad packages3D, STEP)
- 3D model files:
tpsmc27a-etched.step/tpsmc27a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpsmc27a.step/tpsmc27a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (5 pp, sha256
dd1f7a59f449c6bc, 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).