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SMBJ22A
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Shandong Jingdao Microelectronics TVS, SMB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SMBJ22A
Shandong Jingdao Microelectronics · TVS · SMB
SMBJ22A 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 | Cathode terminal of the unipolar SMBJ22A TVS diode, which has a 22 V reverse stand-off voltage and a 24.4 V minimum to 26.9 V maximum breakdown voltage at 1 mA test current per Table 1. |
| 2 | Anode | passive | Anode terminal of the unipolar SMBJ22A TVS diode, which has a 600 W peak pulse power rating on the 10/1000 µs waveform. |
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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 24.4 | 26.9 | V | IT = 1 mA (Table 1, SMBJ22A unidirectional row) | 2 | |
| Reverse Leakage | 1 | µA | at VRWM (Table 1, SMBJ22A row) | 2 | |||
| Max. Clamp Voltage | VC | 35.5 | V | at IPP = 16.9 A (Table 1, SMBJ22A row) | 2 | ||
| Peak Pulse Current | IPP | 16.9 | A | Table 1, SMBJ22A row; 10/1000 µs waveform | 2 | ||
| Reverse Stand-off Voltage | VRWM | 22 | V | Table 1, SMBJ22A row (unidirectional) | 2 | ||
| Peak Pulse Power Dissipation | PPPM | 600 | W | 10/1000 µs waveform (Note 1, Note 2, Fig.1) | 1 | ||
| Peak Forward Surge Current | IFSM | 100 | A | 8.3 ms single half sine-wave, JEDEC method (Note 3, Fig.4) | 1 | ||
| Typical Junction Capacitance | CJ | 390 | pF | VR = 4 V, f = 1 MHz | 1 | ||
| ESD Voltage per IEC61000-4-2, Contact | VESD1 | 30 | kV | Contact discharge per IEC61000-4-2 | 1 | ||
| ESD Voltage per IEC61000-4-2, Air | VESD2 | 30 | kV | Air discharge per IEC61000-4-2 | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 100 | °C/W | Mounted on 5 mm (0.13 mm thick) land areas (Note 2) | 1 | ||
| Operating Junction and Storage Temperature Range | Tj, Tstg | -65 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SMBJ22A - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
smbj22a-etched.step/smbj22a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj22a.step/smbj22a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shandong Jingdao Microelectronics datasheet (4 pp, sha256
11a0cb29fa635344, 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).
# SMBJ22A
**Shandong Jingdao Microelectronics** · TVS · SMB
SMBJ22A 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 | Cathode terminal of the unipolar SMBJ22A TVS diode, which has a 22 V reverse stand-off voltage and a 24.4 V minimum to 26.9 V maximum breakdown voltage at 1 mA test current per Table 1. |
| 2 | Anode | passive | Anode terminal of the unipolar SMBJ22A TVS diode, which has a 600 W peak pulse power rating on the 10/1000 µs waveform. |
## 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 24.4 | | 26.9 | V | IT = 1 mA (Table 1, SMBJ22A unidirectional row) | 2 |
| Reverse Leakage | | | | 1 | µA | at VRWM (Table 1, SMBJ22A row) | 2 |
| Max. Clamp Voltage | VC | | | 35.5 | V | at IPP = 16.9 A (Table 1, SMBJ22A row) | 2 |
| Peak Pulse Current | IPP | | | 16.9 | A | Table 1, SMBJ22A row; 10/1000 µs waveform | 2 |
| Reverse Stand-off Voltage | VRWM | | | 22 | V | Table 1, SMBJ22A row (unidirectional) | 2 |
| Peak Pulse Power Dissipation | PPPM | | | 600 | W | 10/1000 µs waveform (Note 1, Note 2, Fig.1) | 1 |
| Peak Forward Surge Current | IFSM | | | 100 | A | 8.3 ms single half sine-wave, JEDEC method (Note 3, Fig.4) | 1 |
| Typical Junction Capacitance | CJ | | 390 | | pF | VR = 4 V, f = 1 MHz | 1 |
| ESD Voltage per IEC61000-4-2, Contact | VESD1 | | | 30 | kV | Contact discharge per IEC61000-4-2 | 1 |
| ESD Voltage per IEC61000-4-2, Air | VESD2 | | | 30 | kV | Air discharge per IEC61000-4-2 | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA | | | 100 | °C/W | Mounted on 5 mm (0.13 mm thick) land areas (Note 2) | 1 |
| Operating Junction and Storage Temperature Range | Tj, Tstg | -65 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `SMBJ22A`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `smbj22a-etched.step` / `smbj22a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smbj22a.step` / `smbj22a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](docs/smbj22a-datasheet.pdf) (4 pp, sha256 `11a0cb29fa635344`, 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/smbj22a-datasheet.pdf)