component
1KSMB30A
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AA(SMBJ). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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 | 9d ago |
| viewers | 9d ago |
| 1ksmb30a-etched.glb | 9d ago |
| 1ksmb30a-etched.step | 9d ago |
| 1ksmb30a-hero.glb | 9d ago |
| 1ksmb30a-hero.overlay.json | 9d ago |
| 1ksmb30a.glb | 9d ago |
| 1ksmb30a.kicad_mod | 9d ago |
| 1ksmb30a.kicad_sym | 9d ago |
| 1ksmb30a.lbr | 9d ago |
| 1ksmb30a.step | 9d ago |
| package.json | 9d ago |
| page.json | 9d ago |
| README.md | 9d ago |
1KSMB30A
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMBJ)
1KSMB30A 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 | 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 | 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 |
|---|---|---|---|---|---|---|---|
| Reverse Stand-off Voltage | VR | 25.6 | V | 1KSMB30A (uni-directional) row, Electrical Characteristics table; stand-off voltage is the maximum voltage applied without operation | 2 | ||
| Breakdown Voltage | VBR | 28.5 | 31.5 | V | @ IT = 1 mA | 2 | |
| Maximum Clamping Voltage | VC | 41.4 | V | @ Ipp = 24.2 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 24.2 | A | 10/1000µs waveform | 2 | ||
| Maximum Reverse Leakage Current | IR | 1 | µA | @ VR = 25.6 V | 2 | ||
| VBR Temperature Coefficient | αT | 0.1 | % | Typical; VBR@TJ = VBR@25°C x (1+αT x (TJ-25)) | 1 | ||
| Peak Pulse Power Dissipation | PPPM | 1000 | W | 10/1000µs waveform at TA=25°C (Notes 1, 2) | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 5 | W | TL=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 120 | A | 8.3ms single half sine wave, unidirectional only (Note 3) | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | @ 50A, unidirectional only | 1 | ||
| Operating Temperature Range | TJ | -65 | 150 | °C | Junction temperature range as printed in Maximum Ratings table | 1 | |
| Storage Temperature Range | TSTG | -65 | 175 | °C | Storage temperature | 1 | |
| Typical Thermal Resistance Junction to Lead | RθJL | 20 | °C/W | Typical | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 100 | °C/W | Typical | 1 |
CAD (KiCad official)
- Symbol:
1KSMB30A - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
- 3D model files:
1ksmb30a-etched.step/1ksmb30a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1ksmb30a.step/1ksmb30a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
5456789e35da8ee5, retrieved 2026-10-13, 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).