component
TPSMB39CA
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
markdownTPSMB39CA
Littelfuse · TVS · DO-214AA
TPSMB39CA 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, no cathode band); standoff VR 33.3V, breakdown 37.1V typ (33.30-41.00V min-max) at 1mA, max clamping 53.9V at 11.3A Ipp. |
| 2 | A2 | passive | Bidirectional TVS terminal (no polarity, no cathode band); interchangeable with the other terminal, 600W peak pulse power at 10/1000µs. |
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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 37.1 | 41 | V | @ IT = 1 mA | 2 | |
| Reverse Stand-off Voltage | VR | 33.3 | V | 2 | |||
| Maximum Clamping Voltage | VC | 53.9 | V | @ Ipp = 11.3 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 11.3 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR | 2 | ||
| Temperature coefficient of VBR | αT | 0.097 | %/C | Maximum | 2 | ||
| Typical IR at 150°C | IR | 8 | µA | @150°C | 2 | ||
| Test Current | IT | 1 | mA | 2 | |||
| Peak Pulse Power Dissipation | PPPM | 600 | W | 10/1000µs waveform | 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 | 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 | ||
| Thermal Resistance Junction to Lead | RθJL | 20 | °C/W | Typical | 1 | ||
| Thermal Resistance Junction to Ambient | RθJA | 100 | °C/W | Typical | 1 | ||
| VBR Voltage Tolerance | -5 | 5 | % | CA suffix: 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:
TPSMB39CA - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA (KiCad packages3D, STEP)
- 3D model files:
tpsmb39ca-etched.step/tpsmb39ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpsmb39ca.step/tpsmb39ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
11f500633484b187, retrieved 2026-10-23, 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).