component
SMBJ8.5A-QH
Public Made by Adomby adom
BOURNS TVS, 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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Contents
README
markdownSMBJ8.5A-QH
BOURNS · TVS · SMB(DO-214AA)
SMBJ8.5A-QH from BOURNS, 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 | BOURNS |
| 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 (unidirectional, min) | VBR | 9.44 | V | @ IT = 1.0 mA | 2 | ||
| Breakdown voltage (unidirectional, max) | VBR | 10.4 | V | @ IT = 1.0 mA | 2 | ||
| Maximum reverse leakage | IR | 20 | µA | @ VRWM = 8.5 V | 2 | ||
| Maximum clamping voltage (10/1000 µs) | Vc | 14.4 | V | @ Ipp (10/1000 µs) | 2 | ||
| Maximum peak pulse current (10/1000 µs) | Ipp | 41.7 | A | 10/1000 µs | 2 | ||
| Maximum clamping voltage (8/20 µs) | Vc | 18.7 | V | @ Ipp (8/20 µs) | 2 | ||
| Maximum peak pulse current (8/20 µs) | Ipp | 208.5 | A | 8/20 µs | 2 | ||
| Minimum peak pulse power dissipation | PPK | 600 | W | TP = 1 ms (Notes 1,2) | 1 | ||
| Peak forward surge current | IFSM | 100 | A | 8.3 ms single half sine wave superimposed on rated load (JEDEC method) (Note 3) | 1 | ||
| Operating temperature range | TJ | -55 | 150 | °C | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | °C | 1 | ||
| Breakdown voltage tolerance (suffix A, unidirectional) | -5 | 5 | % | Suffix 'A' denotes a 5 % tolerance unidirectional device | 2 |
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 | copper | 2. Mounted on 5.0 mm2 (0.03 mm thick) copper pads to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
SMBJ8.5A-QH - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj8-5a-qh-etched.step/smbj8-5a-qh-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj8-5a-qh.step/smbj8-5a-qh.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BOURNS datasheet (6 pp, sha256
fd33918f2c178a02, retrieved 2026-10-23, 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).