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SMBJ70CA
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Shandong Jingdao Microelectronics ESD And Surge Protection (TVS/ESD), SMB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SMBJ70CA
Shandong Jingdao Microelectronics · ESD And Surge Protection (TVS/ESD) · SMB
SMBJ70CA from Shandong Jingdao Microelectronics, in a SMB. 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 | Pin 1 is labelled Cathode in the PINNING table for the unipolar part; the datasheet gives no polarity designation for pin 1 on the bipolar (CA) variant, so it is shown only as a numbered terminal of the bidirectional symbol. |
| 2 | Anode | passive | Pin 2 is labelled Anode in the PINNING table for the unipolar part; the datasheet gives no polarity designation for pin 2 on the bipolar (CA) variant, so it is shown only as a numbered terminal of the bidirectional symbol. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SMB |
| 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 (10/1000 us waveform) | PPPM | 600 | W | 10/1000 us waveform (Note1, Note2, Fig.1) | 1 | ||
| Peak Forward Surge Current | IFSM | 100 | A | 8.3ms single half sine-wave, JEDEC method (Note 3, Fig 4) | 1 | ||
| Reverse Stand-off Voltage | VRMW | 70 | V | 2 | |||
| Breakdown Voltage | VBR | 77.8 | 86 | V | @ IT = 1 mA | 2 | |
| Reverse Leakage Current | 1 | μA | 2 | ||||
| Max. Clamp Voltage | VC | 113 | V | @ IPP = 5.3 A | 2 | ||
| Peak Pulse Current | IPP | 5.3 | A | Table 1, 10/1000 us waveform | 2 | ||
| Typical Junction Capacitance | CJ | 390 | pF | VR=4V, f=1MHz | 1 | ||
| ESD Voltage per IEC6100-4-2, Contact | VESD1 | 30 | kV | Contact, per IEC6100-4-2 | 1 | ||
| ESD Voltage per IEC6100-4-2, Air | VESD2 | 30 | kV | Air, per IEC6100-4-2 | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 100 | °C/W | Note 2: mounted on 5 mm (0.13mm thick) land areas | 1 | ||
| Operating Junction and Storage Temperature Range | Tj, Tstg | -65 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SMBJ70CA - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
smbj70ca-etched.step/smbj70ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj70ca.step/smbj70ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shandong Jingdao Microelectronics datasheet (4 pp, sha256
3645fe149a846541, 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).
# SMBJ70CA
**Shandong Jingdao Microelectronics** · ESD And Surge Protection (TVS/ESD) · SMB
SMBJ70CA from Shandong Jingdao Microelectronics, in a SMB. 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 | Pin 1 is labelled Cathode in the PINNING table for the unipolar part; the datasheet gives no polarity designation for pin 1 on the bipolar (CA) variant, so it is shown only as a numbered terminal of the bidirectional symbol. |
| 2 | Anode | passive | Pin 2 is labelled Anode in the PINNING table for the unipolar part; the datasheet gives no polarity designation for pin 2 on the bipolar (CA) variant, so it is shown only as a numbered terminal of the bidirectional symbol. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SMB |
| 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 (10/1000 us waveform) | PPPM | | | 600 | W | 10/1000 us waveform (Note1, Note2, Fig.1) | 1 |
| Peak Forward Surge Current | IFSM | | | 100 | A | 8.3ms single half sine-wave, JEDEC method (Note 3, Fig 4) | 1 |
| Reverse Stand-off Voltage | VRMW | | | 70 | V | | 2 |
| Breakdown Voltage | VBR | 77.8 | | 86 | V | @ IT = 1 mA | 2 |
| Reverse Leakage Current | | | | 1 | μA | | 2 |
| Max. Clamp Voltage | VC | | | 113 | V | @ IPP = 5.3 A | 2 |
| Peak Pulse Current | IPP | | | 5.3 | A | Table 1, 10/1000 us waveform | 2 |
| Typical Junction Capacitance | CJ | | 390 | | pF | VR=4V, f=1MHz | 1 |
| ESD Voltage per IEC6100-4-2, Contact | VESD1 | | | 30 | kV | Contact, per IEC6100-4-2 | 1 |
| ESD Voltage per IEC6100-4-2, Air | VESD2 | | | 30 | kV | Air, per IEC6100-4-2 | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA | | 100 | | °C/W | Note 2: mounted on 5 mm (0.13mm thick) land areas | 1 |
| Operating Junction and Storage Temperature Range | Tj, Tstg | -65 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `SMBJ70CA`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `smbj70ca-etched.step` / `smbj70ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smbj70ca.step` / `smbj70ca.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](docs/smbj70ca-datasheet.pdf) (4 pp, sha256 `3645fe149a846541`, 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/smbj70ca-datasheet.pdf)