component
SMCJ85A
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.
main
SMCJ85A
TWGMC · ESD And Surge Protection (TVS/ESD) · DO-214AB(SMC)
SMCJ85A 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 of the unidirectional SMCJ85A TVS (85 V stand-off, 94.4~104 V breakdown at 1 mA, 137 V max clamping at 11.0 A). |
| 2 | Anode | passive | Anode of the unidirectional SMCJ85A TVS diode, per the datasheet pinning table. |
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 | 94.4 | 104 | V | @IT=1 mA, TA=25°C | 2 | |
| Reverse Stand-Off Voltage | VRWM | 85 | V | TA=25°C | 2 | ||
| Maximum Clamping Voltage | VC | 137 | V | @IPP=11.0 A, TA=25°C | 2 | ||
| Peak Pulse Current | IPP | 11 | A | 10/1000us waveform | 2 | ||
| Reverse Leakage | IR | 1 | μA | @VRWM=85 V, TA=25°C | 2 | ||
| Test Current | IT | 1 | mA | TA=25°C | 2 | ||
| Peak Pulse Power Dissipation | PPPM | 1500 | W | 10/1000 us waveform | 1 | ||
| Peak Forward Surge Current | IFSM | 200 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC), UNI | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 100 A, unidirectional only | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 6.5 | W | TA=50°C | 1 | ||
| Thermal Resistance Junction to Ambient | RθJA | 75 | °C/W | Typical | 1 | ||
| Thermal Resistance Junction to Lead | RθJL | 15 | °C/W | Typical | 1 | ||
| Operating Junction and Storage Temperature | Tj, Tstg | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SMCJ85A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB(SMC) (KiCad packages3D, STEP)
- 3D model files:
smcj85a-etched.step/smcj85a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smcj85a.step/smcj85a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TWGMC datasheet (5 pp, sha256
2bb7845336b777a3, retrieved 2026-10-22, 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).
# SMCJ85A
**TWGMC** · ESD And Surge Protection (TVS/ESD) · DO-214AB(SMC)
SMCJ85A 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 of the unidirectional SMCJ85A TVS (85 V stand-off, 94.4~104 V breakdown at 1 mA, 137 V max clamping at 11.0 A). |
| 2 | Anode | passive | Anode of the unidirectional SMCJ85A TVS diode, per the datasheet pinning table. |
## 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 | 94.4 | | 104 | V | @IT=1 mA, TA=25°C | 2 |
| Reverse Stand-Off Voltage | VRWM | | 85 | | V | TA=25°C | 2 |
| Maximum Clamping Voltage | VC | | | 137 | V | @IPP=11.0 A, TA=25°C | 2 |
| Peak Pulse Current | IPP | | | 11 | A | 10/1000us waveform | 2 |
| Reverse Leakage | IR | | | 1 | μA | @VRWM=85 V, TA=25°C | 2 |
| Test Current | IT | | 1 | | mA | TA=25°C | 2 |
| Peak Pulse Power Dissipation | PPPM | | | 1500 | W | 10/1000 us waveform | 1 |
| Peak Forward Surge Current | IFSM | | | 200 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC), UNI | 1 |
| Maximum Instantaneous Forward Voltage | VF | | | 3.5 | V | at 100 A, unidirectional only | 1 |
| Power Dissipation on Infinite Heat Sink | PD | | | 6.5 | W | TA=50°C | 1 |
| Thermal Resistance Junction to Ambient | RθJA | | 75 | | °C/W | Typical | 1 |
| Thermal Resistance Junction to Lead | RθJL | | 15 | | °C/W | Typical | 1 |
| Operating Junction and Storage Temperature | Tj, Tstg | -55 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `SMCJ85A`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: DO-214AB(SMC) (KiCad packages3D, STEP)
- 3D model files: `smcj85a-etched.step` / `smcj85a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smcj85a.step` / `smcj85a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [TWGMC datasheet](docs/smcj85a-datasheet.pdf) (5 pp, sha256 `2bb7845336b777a3`, 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/smcj85a-datasheet.pdf)