component
TPSMB22A
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
markdownTPSMB22A
Littelfuse · TVS · DO-214AA
TPSMB22A 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 | K | passive | Cathode of the unidirectional TVS diode, marked by the color/cathode band on the DO-214AA (SMB J-Bend) body; the TPSMB22A has a 18.80 V min to 23.10 V max breakdown voltage and 20.9 V... see standoff 18.80 V VR. |
| 2 | A | passive | Anode of the unidirectional TVS diode on the DO-214AA (SMB J-Bend) package, the terminal opposite the cathode band, with a maximum clamping voltage of 30.6 V at 19.9 A 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 20.9 | 23.1 | V | @ IT = 1 mA (TPSMB22A column Min 18.80 / Max 23.10 as printed) | 2 | |
| Breakdown Voltage (minimum column) | VBR | 18.8 | V | @ IT = 1 mA | 2 | ||
| Maximum Clamping Voltage | VC | 30.6 | V | @ Ipp = 19.9 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 19.9 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR | 2 | ||
| Maximum Temperature coefficient of VBR | αT | 0.088 | %/C | 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; VF<3.5V for Vbr<300V | 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 | |||
| Reverse Stand off Voltage | VR | 18.8 | V | 2 | |||
| Typical IR at 150°C | IR | 8 | µA | @150°C | 2 |
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:
TPSMB22A - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA (KiCad packages3D, STEP)
- 3D model files:
tpsmb22a-etched.step/tpsmb22a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpsmb22a.step/tpsmb22a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
8cc50e1afb0bea8d, retrieved 2026-10-31, 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).