component
TPSMB75A
Public Made by Adomby adom
Littelfuse TVS, DO-214AA(SMBJ). 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
markdownTPSMB75A
Littelfuse · TVS · DO-214AA(SMBJ)
TPSMB75A from Littelfuse, in a DO-214AA(SMBJ). 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 of the unidirectional TPSMB75A, marked by the cathode band, which goes positive relative to the anode in normal use, with 64.1 V reverse stand-off, 71.3-78.8 V breakdown at 1 mA, and 103 V maximum clamping at 5.9 A peak pulse current. |
| 2 | Anode | passive | Anode terminal of the unidirectional TPSMB75A, which conducts forward with a maximum VF of 3.5 V at 50 A when the cathode is negative relative to it. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AA(SMBJ) |
| 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 | 64.1 | V | 2 | |||
| Breakdown Voltage | VBR | 71.3 | 78.8 | V | @ IT = 1 mA | 2 | |
| Test Current | IT | 1 | mA | 2 | |||
| Maximum Clamping Voltage | VC | 103 | V | @ Ipp = 5.9 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 5.9 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR | 2 | ||
| Maximum Temperature coefficient of VBR | αT | 0.104 | %/C | 2 | |||
| Typical IR @150°C | IR | 8 | µA | @150°C | 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, unidirectional only | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 50A, unidirectional only, VBR<300V | 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 | % | A series, 5% VBR tolerance | 5 |
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 | 260°C/10 seconds at terminals ■ Matte tin lead-free plated | 1 |
CAD (KiCad official)
- Symbol:
TPSMB75A - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
- 3D model files:
tpsmb75a-etched.step/tpsmb75a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpsmb75a.step/tpsmb75a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
8cc50e1afb0bea8d, 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).