component
1.5SMC22A
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), 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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1.5SMC22A
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AB
1.5SMC22A 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage VBR (min) | VBR | 20.9 | V | @ IT = 1 mA | 2 | ||
| Breakdown voltage VBR (max) | VBR | 23.1 | V | @ IT = 1 mA | 2 | ||
| Maximum clamping voltage VC | VC | 30.6 | V | @ Ipp = 49.7 A (same row) | 2 | ||
| Maximum peak pulse current Ipp | Ipp | 49.7 | A | 2 | |||
| Maximum reverse leakage current IR | IR | 1 | µA | @ VR | 2 | ||
| Reverse stand-off voltage VR | VR | 18.8 | V | 2 | |||
| Peak pulse power dissipation (single die) | PPPM | 1500 | W | 10/1000 µs test waveform (Fig. 4), Notes 1 and 2, single die parts | 1 | ||
| Power dissipation on infinite heat sink | PD | 6.5 | W | TL = 50 °C | 1 | ||
| Peak forward surge current | IFSM | 200 | A | 8.3 ms single half sine wave, unidirectional only (Note 3) | 1 | ||
| Maximum instantaneous forward voltage | VF | 3.5 | V | at 100 A, unidirectional only; 3.5 V applies to single die parts (Note 4) | 1 | ||
| Operating temperature range | TJ | -65 | 150 | °C | 1 | ||
| Storage temperature range | TSTG | -65 | 175 | °C | 1 | ||
| Typical thermal resistance junction to lead | RθJL | 15 | °C/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJA | 75 | °C/W | 1 | |||
| VBR temperature coefficient | αT | 0.1 | % | VBR at TJ = VBR at 25 °C × (1 + αT × (TJ − 25)); typical value | 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:
1.5SMC22A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB (KiCad packages3D, STEP)
- 3D model files:
1-5smc22a-etched.step/1-5smc22a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1-5smc22a.step/1-5smc22a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
d65ddb10854080bb, retrieved 2026-10-15, 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).
# 1.5SMC22A
**Littelfuse** · ESD And Surge Protection (TVS/ESD) · DO-214AB
1.5SMC22A 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage VBR (min) | VBR | 20.9 | | | V | @ IT = 1 mA | 2 |
| Breakdown voltage VBR (max) | VBR | | | 23.1 | V | @ IT = 1 mA | 2 |
| Maximum clamping voltage VC | VC | | | 30.6 | V | @ Ipp = 49.7 A (same row) | 2 |
| Maximum peak pulse current Ipp | Ipp | | | 49.7 | A | | 2 |
| Maximum reverse leakage current IR | IR | | | 1 | µA | @ VR | 2 |
| Reverse stand-off voltage VR | VR | | | 18.8 | V | | 2 |
| Peak pulse power dissipation (single die) | PPPM | | | 1500 | W | 10/1000 µs test waveform (Fig. 4), Notes 1 and 2, single die parts | 1 |
| Power dissipation on infinite heat sink | PD | | | 6.5 | W | TL = 50 °C | 1 |
| Peak forward surge current | IFSM | | | 200 | A | 8.3 ms single half sine wave, unidirectional only (Note 3) | 1 |
| Maximum instantaneous forward voltage | VF | | | 3.5 | V | at 100 A, unidirectional only; 3.5 V applies to single die parts (Note 4) | 1 |
| Operating temperature range | TJ | -65 | | 150 | °C | | 1 |
| Storage temperature range | TSTG | -65 | | 175 | °C | | 1 |
| Typical thermal resistance junction to lead | RθJL | | 15 | | °C/W | | 1 |
| Typical thermal resistance junction to ambient | RθJA | | 75 | | °C/W | | 1 |
| VBR temperature coefficient | αT | | 0.1 | | % | VBR at TJ = VBR at 25 °C × (1 + αT × (TJ − 25)); typical value | 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: `1.5SMC22A`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: DO-214AB (KiCad packages3D, STEP)
- 3D model files: `1-5smc22a-etched.step` / `1-5smc22a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1-5smc22a.step` / `1-5smc22a.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/8590144342859157504) (6 pp, sha256 `d65ddb10854080bb`, retrieved 2026-10-15, 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/1-5smc22a-datasheet.pdf)