component
TPSMB28A-VR
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AA(SMBJ). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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TPSMB28A-VR
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMBJ)
TPSMB28A-VR 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage VBR (min) | VBR | 31.1 | 34.4 | V | @ IT = 1 mA | 2 | |
| Maximum clamping voltage | VC | 45.4 | V | @ Ipp; Ipp = 13.3 A in same row | 2 | ||
| Maximum reverse leakage current | IR | 1 | µA | @ VR = 28 V | 2 | ||
| Maximum peak pulse current | Ipp | 13.3 | A | 2 | |||
| Maximum temperature coefficient of VBR | 0.094 | %/C | 2 | ||||
| Maximum instantaneous forward voltage (unidirectional) | VF | 3.5 | V | @ 50 A, unidirectional only; Note 4: VF<3.5V for VR<250V | 1 | ||
| Peak pulse power dissipation | PPPM | 600 | W | 10/1000µs waveform (Fig.1)(Note 1), (Note 2) | 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 (Note 3) | 1 | ||
| Operating junction temperature range (VR≤78V) | TJ | -65 | 175 | °C | VR ≤ 78V | 1 | |
| Storage temperature range | TSTG | -65 | 175 | °C | 1 | ||
| Reverse stand-off voltage | VR | 28 | V | 2 | |||
| Typical reverse leakage current at 150°C | IR | 8 | µA | @ 150°C | 2 | ||
| VBR temperature coefficient (typical) | αT | 0.1 | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 2 | ||
| Typical thermal resistance junction to lead | RθJL | 20 | °C/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJA | 100 | °C/W | Mounted on 0.2x0.2in (5.0x5.0mm) copper pad to each terminal (Note 2) | 1 |
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 | • Matte tin lead-free plated • Halogen free and RoHS | 1 |
CAD (KiCad official)
- Symbol:
TPSMB28A-VR - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
- 3D model files:
tpsmb28a-vr-etched.step/tpsmb28a-vr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpsmb28a-vr.step/tpsmb28a-vr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
ecc921caf390ee00, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).
# TPSMB28A-VR
**Littelfuse** · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMBJ)
TPSMB28A-VR 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
## 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage VBR (min) | VBR | 31.1 | | 34.4 | V | @ IT = 1 mA | 2 |
| Maximum clamping voltage | VC | | | 45.4 | V | @ Ipp; Ipp = 13.3 A in same row | 2 |
| Maximum reverse leakage current | IR | | | 1 | µA | @ VR = 28 V | 2 |
| Maximum peak pulse current | Ipp | | | 13.3 | A | | 2 |
| Maximum temperature coefficient of VBR | | | | 0.094 | %/C | | 2 |
| Maximum instantaneous forward voltage (unidirectional) | VF | | | 3.5 | V | @ 50 A, unidirectional only; Note 4: VF<3.5V for VR<250V | 1 |
| Peak pulse power dissipation | PPPM | | | 600 | W | 10/1000µs waveform (Fig.1)(Note 1), (Note 2) | 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 (Note 3) | 1 |
| Operating junction temperature range (VR≤78V) | TJ | -65 | | 175 | °C | VR ≤ 78V | 1 |
| Storage temperature range | TSTG | -65 | | 175 | °C | | 1 |
| Reverse stand-off voltage | VR | | 28 | | V | | 2 |
| Typical reverse leakage current at 150°C | IR | | 8 | | µA | @ 150°C | 2 |
| VBR temperature coefficient (typical) | αT | | 0.1 | | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 2 |
| Typical thermal resistance junction to lead | RθJL | | 20 | | °C/W | | 1 |
| Typical thermal resistance junction to ambient | RθJA | | 100 | | °C/W | Mounted on 0.2x0.2in (5.0x5.0mm) copper pad to each terminal (Note 2) | 1 |
## 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 | • Matte tin lead-free plated • Halogen free and RoHS | 1 |
## CAD (KiCad official)
- Symbol: `TPSMB28A-VR`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
- 3D model files: `tpsmb28a-vr-etched.step` / `tpsmb28a-vr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpsmb28a-vr.step` / `tpsmb28a-vr.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/8590398734921609217) (6 pp, sha256 `ecc921caf390ee00`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/tpsmb28a-vr-datasheet.pdf)