component
SMCJ17A
Public Made by Adomby adom
TWGMC ESD And Surge Protection (TVS/ESD), DO-214AB(SMC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SMCJ17A
TWGMC · ESD And Surge Protection (TVS/ESD) · DO-214AB(SMC)
SMCJ17A from TWGMC, in a DO-214AB(SMC). 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 of the unidirectional SMCJ17A transient voltage suppressor, per the PINNING table for DO-214AB/SMC. |
| 2 | Anode | passive | Anode terminal of the unidirectional SMCJ17A transient voltage suppressor, per the PINNING table for DO-214AB/SMC. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TWGMC |
| Package | DO-214AB(SMC) |
| 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 | 18.9 | 20.9 | V | @ IT = 1 mA, unidirectional SMCJ17A | 2 | |
| Maximum Clamping Voltage | VC | 27.6 | V | @ IPP = 54.4 A, 10/1000 us waveform | 2 | ||
| Maximum instantaneous forward voltage | VF | 3.5 | V | at 100 A for unidirectional only | 1 | ||
| Peak Forward Surge Current | IFSM | 200 | A | 8.3 ms single half sine-wave, superimposed on rated load (JEDEC method) | 1 | ||
| Peak Pulse Power Dissipation | PPPM | 1500 | W | 10/1000 us waveform | 1 | ||
| Power dissipation on infinite heat sink | PD | 6.5 | W | Infinite heat sink at TA=50°C | 1 | ||
| Operating Junction and Storage Temperature Range | Tj, Tstg | -55 | 150 | °C | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 75 | °C/W | Note 1: mounted on 8 mm land areas | 1 | ||
| Thermal Resistance Junction to Lead | RθJL | 15 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
SMCJ17A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB(SMC) (KiCad packages3D, STEP)
- 3D model files:
smcj17a-etched.step/smcj17a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smcj17a.step/smcj17a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TWGMC datasheet (5 pp, sha256
2bb7845336b777a3, retrieved 2026-10-21, 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).
# SMCJ17A
**TWGMC** · ESD And Surge Protection (TVS/ESD) · DO-214AB(SMC)
SMCJ17A from TWGMC, in a DO-214AB(SMC). 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 of the unidirectional SMCJ17A transient voltage suppressor, per the PINNING table for DO-214AB/SMC. |
| 2 | Anode | passive | Anode terminal of the unidirectional SMCJ17A transient voltage suppressor, per the PINNING table for DO-214AB/SMC. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TWGMC |
| Package | DO-214AB(SMC) |
| 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 | 18.9 | | 20.9 | V | @ IT = 1 mA, unidirectional SMCJ17A | 2 |
| Maximum Clamping Voltage | VC | | | 27.6 | V | @ IPP = 54.4 A, 10/1000 us waveform | 2 |
| Maximum instantaneous forward voltage | VF | | | 3.5 | V | at 100 A for unidirectional only | 1 |
| Peak Forward Surge Current | IFSM | | | 200 | A | 8.3 ms single half sine-wave, superimposed on rated load (JEDEC method) | 1 |
| Peak Pulse Power Dissipation | PPPM | | | 1500 | W | 10/1000 us waveform | 1 |
| Power dissipation on infinite heat sink | PD | | | 6.5 | W | Infinite heat sink at TA=50°C | 1 |
| Operating Junction and Storage Temperature Range | Tj, Tstg | -55 | | 150 | °C | | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA | | 75 | | °C/W | Note 1: mounted on 8 mm land areas | 1 |
| Thermal Resistance Junction to Lead | RθJL | | 15 | | °C/W | | 1 |
## CAD (KiCad official)
- Symbol: `SMCJ17A`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: DO-214AB(SMC) (KiCad packages3D, STEP)
- 3D model files: `smcj17a-etched.step` / `smcj17a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smcj17a.step` / `smcj17a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [TWGMC datasheet](docs/smcj17a-datasheet.pdf) (5 pp, sha256 `2bb7845336b777a3`, retrieved 2026-10-21, 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/smcj17a-datasheet.pdf)