component
TPSMB15A
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Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AA. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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TPSMB15A
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AA
TPSMB15A 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 | Cathode | passive | Cathode terminal, identified by the color band on the package for unidirectional components; for the unidirectional TPSMB15A the reverse standoff voltage VR is 12.8 V with breakdown VBR of 14.3 V typical (12.8 V min to 15.8 V max at 1 mA) and maximum clamping voltage VC of 21.2 V at Ipp 28.8 A. |
| 2 | Anode | passive | Anode terminal of the unidirectional TVS, which conducts in the forward direction with a maximum forward voltage VF of 3.5 V at 50 A (VF < 3.5 V for parts with VBR < 300 V). |
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 @ IT | VBR | 14.3 | 15.8 | V | @ IT = 1 mA | 2 | |
| Maximum Clamping Voltage | VC | 21.2 | V | @ Ipp = 28.8 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 28.8 | A | 2 | |||
| Maximum Reverse Leakage Current | IR | 1 | µA | @ VR = 12.80 V | 2 | ||
| Maximum Temperature coefficient of VBR | αT | 0.076 | %/C | 2 | |||
| Typical Reverse Leakage Current @150°C | IR | 8 | µA | @ 150°C | 2 | ||
| Reverse Stand-off Voltage | VR | 12.8 | V | 2 | |||
| Peak Pulse Power Dissipation | PPPM | 600 | W | 10/1000µs waveform (Fig.1) | 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, 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 |
CAD (KiCad official)
- Symbol:
TPSMB15A - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA (KiCad packages3D, STEP)
- 3D model files:
tpsmb15a-etched.step/tpsmb15a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpsmb15a.step/tpsmb15a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
8cc50e1afb0bea8d, retrieved 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).
# TPSMB15A
**Littelfuse** · ESD And Surge Protection (TVS/ESD) · DO-214AA
TPSMB15A 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 | Cathode | passive | Cathode terminal, identified by the color band on the package for unidirectional components; for the unidirectional TPSMB15A the reverse standoff voltage VR is 12.8 V with breakdown VBR of 14.3 V typical (12.8 V min to 15.8 V max at 1 mA) and maximum clamping voltage VC of 21.2 V at Ipp 28.8 A. |
| 2 | Anode | passive | Anode terminal of the unidirectional TVS, which conducts in the forward direction with a maximum forward voltage VF of 3.5 V at 50 A (VF < 3.5 V for parts with VBR < 300 V). |
## 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 @ IT | VBR | 14.3 | | 15.8 | V | @ IT = 1 mA | 2 |
| Maximum Clamping Voltage | VC | | | 21.2 | V | @ Ipp = 28.8 A | 2 |
| Maximum Peak Pulse Current | Ipp | | | 28.8 | A | | 2 |
| Maximum Reverse Leakage Current | IR | | | 1 | µA | @ VR = 12.80 V | 2 |
| Maximum Temperature coefficient of VBR | αT | | | 0.076 | %/C | | 2 |
| Typical Reverse Leakage Current @150°C | IR | | 8 | | µA | @ 150°C | 2 |
| Reverse Stand-off Voltage | VR | | 12.8 | | V | | 2 |
| Peak Pulse Power Dissipation | PPPM | | | 600 | W | 10/1000µs waveform (Fig.1) | 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, 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 |
## CAD (KiCad official)
- Symbol: `TPSMB15A`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: DO-214AA (KiCad packages3D, STEP)
- 3D model files: `tpsmb15a-etched.step` / `tpsmb15a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpsmb15a.step` / `tpsmb15a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588938921983528960) (6 pp, sha256 `8cc50e1afb0bea8d`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/tpsmb15a-datasheet.pdf)