component
SMF70A
Public Made by Adomby adom
Changjiang Electronics Tech (CJ) TVS, SOD-123FL. 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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SMF70A
Changjiang Electronics Tech (CJ) · TVS · SOD-123FL
SMF70A from Changjiang Electronics Tech (CJ), in a SOD-123FL. 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 | Changjiang Electronics Tech (CJ) |
| Package | SOD-123FL |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse stand-off voltage | VRWM | 70 | V | 2 | |||
| Breakdown voltage (unidirectional, SMF70A) | VBR | 77.8 | 86 | V | IT = 1 mA | 2 | |
| Max clamping voltage | VC | 113 | V | @Ipp | 2 | ||
| Max peak pulse current | IPP | 1.7 | A | 2 | |||
| Max reverse leakage | IR | 1 | uA | @VRWM | 2 | ||
| Peak power dissipation | PPPM | 200 | W | 10/1000us waveform | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Thermal resistance, junction to lead | RθJL | 26 | ℃/W | Between junction and lead | 1 | ||
| Thermal resistance, junction to ambient | RθJA | 300 | ℃/W | Between junction and Ambient | 1 | ||
| Forward voltage | VF | 1.25 | V | TL=30℃ unless otherwise noted; @200mA | 1 |
CAD (KiCad official)
- Symbol:
SMF70A - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
smf70a-etched.step/smf70a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smf70a.step/smf70a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjiang Electronics Tech (CJ) datasheet (5 pp, sha256
150c24d4249959f9, 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).
# SMF70A
**Changjiang Electronics Tech (CJ)** · TVS · SOD-123FL
SMF70A from Changjiang Electronics Tech (CJ), in a SOD-123FL. 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 | Changjiang Electronics Tech (CJ) |
| Package | SOD-123FL |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse stand-off voltage | VRWM | | | 70 | V | | 2 |
| Breakdown voltage (unidirectional, SMF70A) | VBR | 77.8 | | 86 | V | IT = 1 mA | 2 |
| Max clamping voltage | VC | | | 113 | V | @Ipp | 2 |
| Max peak pulse current | IPP | | | 1.7 | A | | 2 |
| Max reverse leakage | IR | | | 1 | uA | @VRWM | 2 |
| Peak power dissipation | PPPM | | | 200 | W | 10/1000us waveform | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 | | 150 | ℃ | | 1 |
| Thermal resistance, junction to lead | RθJL | | | 26 | ℃/W | Between junction and lead | 1 |
| Thermal resistance, junction to ambient | RθJA | | | 300 | ℃/W | Between junction and Ambient | 1 |
| Forward voltage | VF | | | 1.25 | V | TL=30℃ unless otherwise noted; @200mA | 1 |
## CAD (KiCad official)
- Symbol: `SMF70A`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `smf70a-etched.step` / `smf70a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf70a.step` / `smf70a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjiang Electronics Tech (CJ) datasheet](docs/smf70a-datasheet.pdf) (5 pp, sha256 `150c24d4249959f9`, 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/smf70a-datasheet.pdf)