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TPSMD40CA
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Littelfuse TVS, DO-214AB(SMCJ). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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TPSMD40CA
Littelfuse · TVS · DO-214AB(SMCJ)
TPSMD40CA from Littelfuse, in a DO-214AB(SMCJ). 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 | Bi-directional TVS terminal 1 (no polarity) for the TPSMD40CA, with 40.0 V reverse standoff, 44.40-49.10 V breakdown at 1 mA and 64.5 V max clamping at 46.5 A. |
| 2 | A2 | passive | Bi-directional TVS terminal 2 (no polarity, no cathode band) for the TPSMD40CA, rated 3000 W peak pulse power at 10/1000µs. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB(SMCJ) |
| 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 | 44.4 | 49.1 | V | @ IT = 1 mA | 2 | |
| Reverse Stand-off Voltage | VR | 40 | V | 2 | |||
| Test Current | IT | 1 | mA | 2 | |||
| Maximum Clamping Voltage | VC | 64.5 | V | @ Ipp = 46.5 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 46.5 | A | 2 | |||
| Maximum Reverse Leakage | IR | 2 | µA | @ VR | 2 | ||
| Peak Pulse Power Dissipation | PPPM | 3000 | W | 10/1000µs waveform, TA=25°C | 1 | ||
| Power Dissipation on Infinite Heat Sink | PM(AV) | 6.5 | W | TA=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 300 | A | 8.3ms single half sine wave, unidirectional only | 1 | ||
| Operating Junction and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 1 | ||
| Thermal Resistance Junction to Lead | RθJL | 15 | °C/W | Typical | 1 | ||
| Thermal Resistance Junction to Ambient | RθJA | 75 | °C/W | Typical | 1 | ||
| Breakdown Voltage Tolerance | VBR | -5 | 5 | % | Part numbering: 5% VBR voltage tolerance (A suffix) | 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 | copper | 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
TPSMD40CA - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB(SMCJ) (KiCad packages3D, STEP)
- 3D model files:
tpsmd40ca-etched.step/tpsmd40ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpsmd40ca.step/tpsmd40ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
778e34f01000b1a4, 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).
# TPSMD40CA
**Littelfuse** · TVS · DO-214AB(SMCJ)
TPSMD40CA from Littelfuse, in a DO-214AB(SMCJ). 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 | Bi-directional TVS terminal 1 (no polarity) for the TPSMD40CA, with 40.0 V reverse standoff, 44.40-49.10 V breakdown at 1 mA and 64.5 V max clamping at 46.5 A. |
| 2 | A2 | passive | Bi-directional TVS terminal 2 (no polarity, no cathode band) for the TPSMD40CA, rated 3000 W peak pulse power at 10/1000µs. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB(SMCJ) |
| 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 | 44.4 | | 49.1 | V | @ IT = 1 mA | 2 |
| Reverse Stand-off Voltage | VR | | 40 | | V | | 2 |
| Test Current | IT | | 1 | | mA | | 2 |
| Maximum Clamping Voltage | VC | | | 64.5 | V | @ Ipp = 46.5 A | 2 |
| Maximum Peak Pulse Current | Ipp | | | 46.5 | A | | 2 |
| Maximum Reverse Leakage | IR | | | 2 | µA | @ VR | 2 |
| Peak Pulse Power Dissipation | PPPM | | | 3000 | W | 10/1000µs waveform, TA=25°C | 1 |
| Power Dissipation on Infinite Heat Sink | PM(AV) | | | 6.5 | W | TA=50°C | 1 |
| Peak Forward Surge Current | IFSM | | | 300 | A | 8.3ms single half sine wave, unidirectional only | 1 |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -65 | | 150 | °C | | 1 |
| Thermal Resistance Junction to Lead | RθJL | | 15 | | °C/W | Typical | 1 |
| Thermal Resistance Junction to Ambient | RθJA | | 75 | | °C/W | Typical | 1 |
| Breakdown Voltage Tolerance | VBR | -5 | | 5 | % | Part numbering: 5% VBR voltage tolerance (A suffix) | 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 | copper | | 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. | 1 |
## CAD (KiCad official)
- Symbol: `TPSMD40CA`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: DO-214AB(SMCJ) (KiCad packages3D, STEP)
- 3D model files: `tpsmd40ca-etched.step` / `tpsmd40ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpsmd40ca.step` / `tpsmd40ca.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Littelfuse datasheet](docs/tpsmd40ca-datasheet.pdf) (6 pp, sha256 `778e34f01000b1a4`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/tpsmd40ca-datasheet.pdf)