component
TPSMB27CA
Public Made by Adomby adom
Littelfuse TVS, DO-214AA. 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
markdownTPSMB27CA
Littelfuse · TVS · DO-214AA
TPSMB27CA from Littelfuse, in a DO-214AA. 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 | A1 | passive | Bidirectional TVS terminal (no polarity) with 25.70V typical breakdown (23.10V min to 28.40V max at 1mA) and 23.1V... see review note; reverse standoff VR 23.10V, max clamping 37.5V at 16.3A. |
| 2 | A2 | passive | Bidirectional TVS terminal (no polarity) with reverse standoff voltage VR of 23.10V and maximum clamping voltage of 37.5V at 16.3A peak pulse current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AA |
| 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 | VR | 23.1 | V | 2 | |||
| Breakdown Voltage | VBR | 25.7 | V | @ IT = 1 mA, column MIN/MAX per table | 2 | ||
| Breakdown Voltage (table min/max) | VBR | 23.1 | 25.7 | 28.4 | V | @ IT 1 mA | 2 |
| Maximum Clamping Voltage | VC | 37.5 | V | @ Ipp 16.3 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 16.3 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR | 2 | ||
| Typical IR at 150°C | IR | 8 | µA | @150°C | 2 | ||
| Temperature coefficient of VBR | αT | 0.092 | %/C | Maximum | 2 | ||
| Peak Pulse Power Dissipation | PPPM | 600 | W | 10/1000µs waveform, TA=25°C | 1 | ||
| Power Dissipation on infinite heat sink | PM(AV) | 5 | W | TL=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 100 | A | 8.3ms single half sine wave, unidirectional only | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 50A, unidirectional only | 1 | ||
| Operating Junction Temperature Range | TJ | -65 | 175 | °C | VBR ≤ 91V | 1 | |
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 20 | °C/W | 1 | |||
| Typical Thermal Resistance Junction to Ambient | RθJA | 100 | °C/W | 1 | |||
| VBR voltage tolerance | -5 | 5 | % | Part numbering: 5% VBR voltage tolerance | 6 |
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 | seconds at terminals • Matte tin lead-free plated | 1 |
CAD (KiCad official)
- Symbol:
TPSMB27CA - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA (KiCad packages3D, STEP)
- 3D model files:
tpsmb27ca-etched.step/tpsmb27ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpsmb27ca.step/tpsmb27ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
11f500633484b187, 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).