component
SMBJ188A
Public Made by Adomby adom
Littelfuse TVS, DO-214AA(SMBJ). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 11d ago |
| viewers | 11d ago |
| package.json | 11d ago |
| page.json | 11d ago |
| README.md | 11d ago |
| smbj188a-etched.glb | 11d ago |
| smbj188a-etched.step | 11d ago |
| smbj188a-hero.glb | 11d ago |
| smbj188a-hero.overlay.json | 11d ago |
| smbj188a.glb | 11d ago |
| smbj188a.kicad_mod | 11d ago |
| smbj188a.kicad_sym | 11d ago |
| smbj188a.lbr | 11d ago |
| smbj188a.step | 11d ago |
SMBJ188A
Littelfuse · TVS · DO-214AA(SMBJ)
SMBJ188A from Littelfuse, in a DO-214AA(SMBJ). 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 unidirectional SMBJ188A, marked by the cathode band, with VR 188 V, VBR 209-231 V at 1 mA and max VC 304 V at 2.0 A Ipp. |
| 2 | Anode | passive | Anode terminal of the unidirectional SMBJ188A, the end opposite the cathode band, with max forward voltage VF of 3.5 V at 50 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AA(SMBJ) |
| 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 | 209 | 231 | V | @ IT = 1 mA | 2 | |
| Maximum Clamping Voltage | VC | 304 | V | @ Ipp = 2.0 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 2 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR = 188 V | 2 | ||
| Maximum Temperature coefficient of VBR | 0.11 | %/C | 2 | ||||
| Reverse Stand off Voltage | VR | 188 | V | 2 | |||
| Test Current | IT | 1 | mA | 2 | |||
| Peak Pulse Power Dissipation | PPPM | 600 | W | 10/1000 µs test waveform, single die, TA=25°C | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 5 | W | TL = 50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 100 | A | 8.3 ms single half sine wave, unidirectional only | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 50 A, unidirectional only, single die | 1 | ||
| Operating Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Typical Thermal Resistance Junction to Lead | RƟJL | 20 | °C/W | 1 | |||
| Typical Thermal Resistance Junction to Ambient | RƟJA | 100 | °C/W | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | • Matte tin lead-free plated • Halogen free and RoHS | 1 |
CAD (KiCad official)
- Symbol:
SMBJ188A - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
- 3D model files:
smbj188a-etched.step/smbj188a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj188a.step/smbj188a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
d7df155be4b1f612, 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).