component
1.5SMC39A
Public Made by Adomby adom
Littelfuse TVS, DO-214AB. 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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1.5SMC39A
Littelfuse · TVS · DO-214AB
1.5SMC39A from Littelfuse, in a DO-214AB. 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-214AB |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power Dissipation (10/1000µs waveform) | PPPM | 1500 | W | TA=25ºC, 10/1000µs waveform (Fig.2), Notes 1, 2, 5 | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 6.5 | W | at TL=50ºC | 1 | ||
| Peak Forward Surge Current | IFSM | 200 | A | 8.3ms single half sine wave (Note 3) | 1 | ||
| Maximum Instantaneous Forward Voltage (single die) | VF | 3.5 | V | at 100A, unidirectional only (Note 4), single-die part | 1 | ||
| Operating Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Breakdown Voltage | VBR | 37.1 | 41 | V | @ IT 1 mA | 2 | |
| Maximum Clamping Voltage | VC | 53.9 | V | @ Ipp 28.2 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 28.2 | A | 2 | |||
| Maximum Reverse Leakage Current | IR | 1 | µA | @ VR 33.3 V | 2 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 15 | °C/W | Typical | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 75 | °C/W | Typical | 1 | ||
| Temperature Coefficient of VBR | αT | 0.1 | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 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 | copper | 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
1.5SMC39A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB (KiCad packages3D, STEP)
- 3D model files:
1-5smc39a-etched.step/1-5smc39a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1-5smc39a.step/1-5smc39a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
51f55ba50fc3ad78, retrieved 2026-10-21, 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).
# 1.5SMC39A
**Littelfuse** · TVS · DO-214AB
1.5SMC39A from Littelfuse, in a DO-214AB. 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-214AB |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power Dissipation (10/1000µs waveform) | PPPM | | | 1500 | W | TA=25ºC, 10/1000µs waveform (Fig.2), Notes 1, 2, 5 | 1 |
| Power Dissipation on Infinite Heat Sink | PD | | | 6.5 | W | at TL=50ºC | 1 |
| Peak Forward Surge Current | IFSM | | | 200 | A | 8.3ms single half sine wave (Note 3) | 1 |
| Maximum Instantaneous Forward Voltage (single die) | VF | | | 3.5 | V | at 100A, unidirectional only (Note 4), single-die part | 1 |
| Operating Temperature Range | TJ | -65 | | 150 | °C | | 1 |
| Storage Temperature Range | TSTG | -65 | | 175 | °C | | 1 |
| Breakdown Voltage | VBR | 37.1 | | 41 | V | @ IT 1 mA | 2 |
| Maximum Clamping Voltage | VC | | | 53.9 | V | @ Ipp 28.2 A | 2 |
| Maximum Peak Pulse Current | Ipp | | | 28.2 | A | | 2 |
| Maximum Reverse Leakage Current | IR | | | 1 | µA | @ VR 33.3 V | 2 |
| Typical Thermal Resistance Junction to Lead | RθJL | | 15 | | °C/W | Typical | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA | | 75 | | °C/W | Typical | 1 |
| Temperature Coefficient of VBR | αT | | 0.1 | | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 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 | copper | | 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. | 1 |
## CAD (KiCad official)
- Symbol: `1.5SMC39A`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: DO-214AB (KiCad packages3D, STEP)
- 3D model files: `1-5smc39a-etched.step` / `1-5smc39a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1-5smc39a.step` / `1-5smc39a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Littelfuse datasheet](docs/1-5smc39a-datasheet.pdf) (6 pp, sha256 `51f55ba50fc3ad78`, retrieved 2026-10-21, 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/1-5smc39a-datasheet.pdf)