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SMBJ220A
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JUXING Electrostatic And Surge Protection (TVS/ESD), SMB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SMBJ220A
JUXING · Electrostatic And Surge Protection (TVS/ESD) · SMB
SMBJ220A from JUXING, 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 (UNI) TVS per the PINNING table; the datasheet states no separate voltage or current limit for this pin, and the SMBJ220A (A suffix, not CA) is the unipolar variant. |
| 2 | Anode | passive | Anode terminal of the unipolar (UNI) TVS per the PINNING table; the datasheet states no separate voltage or current limit for this pin, and the SMBJ220A (A suffix, not CA) is the unipolar variant. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JUXING |
| Package | SMB |
| Category | TVS/Fuse/Board Level 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 (min) | VBR | 246 | V | Test current IT = 1 mA (Table 1, SMBJ220A row) | 2 | ||
| Breakdown voltage (max) | VBR | 272 | V | Test current IT = 1 mA (Table 1, SMBJ220A row) | 2 | ||
| Max. clamp voltage | VC | 356 | V | At peak pulse current IPP = 1.7 A (Table 1) | 2 | ||
| Peak pulse current | IPP | 1.7 | A | Table 1, SMBJ220A row | 2 | ||
| Reverse leakage current | 1 | μA | At reverse stand-off voltage VRMW (Table 1) | 2 | |||
| Reverse stand-off voltage | VRMW | 220 | V | Table 1, SMBJ220A (unidirectional) row | 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 | ||
| Peak pulse current (absolute maximum) | IPPM | 1.7 | A | 10/1000 μs waveform (Note 1, Fig 3); value per Table 1 for SMBJ220A | 1 | ||
| Operating junction and storage temperature range | Tj, Tstg | -65 | 150 | °C | 1 | ||
| ESD voltage, contact | VESD1 | 30 | kV | Per IEC6100-4-2, contact | 1 | ||
| ESD voltage, air | VESD2 | 30 | kV | Per IEC6100-4-2, air | 1 | ||
| Typical thermal resistance junction to ambient | RθJA | 100 | °C/W | Mounted on 5 mm (0.13mm thick) land areas (Note 2) | 1 |
CAD (KiCad official)
- Symbol:
SMBJ220A - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
smbj220a-etched.step/smbj220a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj220a.step/smbj220a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JUXING datasheet (4 pp, sha256
ab4c8155c5d7d83f, 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).
# SMBJ220A
**JUXING** · Electrostatic And Surge Protection (TVS/ESD) · SMB
SMBJ220A from JUXING, 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 (UNI) TVS per the PINNING table; the datasheet states no separate voltage or current limit for this pin, and the SMBJ220A (A suffix, not CA) is the unipolar variant. |
| 2 | Anode | passive | Anode terminal of the unipolar (UNI) TVS per the PINNING table; the datasheet states no separate voltage or current limit for this pin, and the SMBJ220A (A suffix, not CA) is the unipolar variant. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JUXING |
| Package | SMB |
| Category | TVS/Fuse/Board Level 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 (min) | VBR | 246 | | | V | Test current IT = 1 mA (Table 1, SMBJ220A row) | 2 |
| Breakdown voltage (max) | VBR | | | 272 | V | Test current IT = 1 mA (Table 1, SMBJ220A row) | 2 |
| Max. clamp voltage | VC | | | 356 | V | At peak pulse current IPP = 1.7 A (Table 1) | 2 |
| Peak pulse current | IPP | | | 1.7 | A | Table 1, SMBJ220A row | 2 |
| Reverse leakage current | | | | 1 | μA | At reverse stand-off voltage VRMW (Table 1) | 2 |
| Reverse stand-off voltage | VRMW | | | 220 | V | Table 1, SMBJ220A (unidirectional) row | 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 |
| Peak pulse current (absolute maximum) | IPPM | | | 1.7 | A | 10/1000 μs waveform (Note 1, Fig 3); value per Table 1 for SMBJ220A | 1 |
| Operating junction and storage temperature range | Tj, Tstg | -65 | | 150 | °C | | 1 |
| ESD voltage, contact | VESD1 | | | 30 | kV | Per IEC6100-4-2, contact | 1 |
| ESD voltage, air | VESD2 | | | 30 | kV | Per IEC6100-4-2, air | 1 |
| Typical thermal resistance junction to ambient | RθJA | | 100 | | °C/W | Mounted on 5 mm (0.13mm thick) land areas (Note 2) | 1 |
## CAD (KiCad official)
- Symbol: `SMBJ220A`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `smbj220a-etched.step` / `smbj220a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smbj220a.step` / `smbj220a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [JUXING datasheet](docs/smbj220a-datasheet.pdf) (4 pp, sha256 `ab4c8155c5d7d83f`, 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/smbj220a-datasheet.pdf)