component
SMBJ48CA-AT
Public Made by Adomby adom
Brightking ESD And Surge Protection (TVS/ESD), SMB(DO-214AA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSMBJ48CA-AT
Brightking · ESD And Surge Protection (TVS/ESD) · SMB(DO-214AA)
SMBJ48CA-AT from Brightking, in a SMB(DO-214AA). 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 | Brightking |
| Package | SMB(DO-214AA) |
| 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 | 53.3 | 58.9 | V | Bidirectional (CA), @IT = 1 mA | 3 | |
| Maximum clamping voltage | VC | 77.4 | V | @IPP = 7.8 A | 3 | ||
| Reverse leakage current | IR | 1 | µA | @VRWM = 48.0 V | 3 | ||
| Peak pulse current | IPP | 7.8 | A | Peak pulse current listed in the same table row as VC | 3 | ||
| Peak pulse power dissipation | PPPM | 600 | W | 10/1000µs waveform (Note 1, Note 2, Fig.1); printed as 'Minimum 600 Watts' | 1 | ||
| Steady state power dissipation | PM(AV) | 5 | W | TA = 50℃ (Fig.5) | 1 | ||
| Peak forward surge current | IFSM | 100 | A | 8.3 ms single half sine-wave, superimposed on rated load (JEDEC Method) (Note 3, Fig.6) | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Reverse stand-off voltage | VRWM | 48 | V | Bidirectional SMBJ48CA-AT | 3 | ||
| Thermal resistance junction to lead | RθJL | 20 | ℃/W | Typical | 1 | ||
| Thermal resistance junction to ambient | RθJA | 100 | ℃/W | Typical | 1 |
CAD (KiCad official)
- Symbol:
SMBJ48CA-AT - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj48ca-at-etched.step/smbj48ca-at-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj48ca-at.step/smbj48ca-at.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Brightking datasheet (7 pp, sha256
a2bc93a3b45c5e72, retrieved 2026-10-15, 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).