component
SMBJ78CA-13-F
Public Made by Adomby adom
Diodes Incorporated TVS, SMB. Pinout cross-checked by two models against the datasheet, 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
markdownSMBJ78CA-13-F
Diodes Incorporated · TVS · SMB
SMBJ78CA-13-F from Diodes Incorporated, 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 | A1 | passive | Bi-directional (C suffix) terminal with no polarity indicator; the SMBJ78CA is symmetric, with 78V reverse standoff voltage, 86.7V to 99.7V breakdown at 10mA... see review note. |
| 2 | A2 | passive | Second terminal of the bi-directional device; either terminal can be connected to the positive side, with 78V standoff voltage and 126V maximum clamping at 4.7A peak pulse current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SMB |
| 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 Standoff Voltage | VRWM | 78 | V | 3 | |||
| Breakdown Voltage | VBR | 86.7 | 99.7 | V | @ IT = 1.0 mA, pulse 10ms to 15ms | 3 | |
| Max Reverse Leakage | IR | 5 | µA | @ VRWM | 3 | ||
| Max Clamping Voltage | VC | 126 | V | @ Ipp = 4.7 A | 3 | ||
| Max Peak Pulse Current | Ipp | 4.7 | A | 3 | |||
| Peak Pulse Power Dissipation | PPK | 600 | W | TA = +25°C, non repetitive current pulse derated above TA = +25°C | 2 | ||
| Peak Power Derating Above +25°C | PDER | 4.8 | W/°C | 2 | |||
| Peak Forward Surge Current | IFSM | 100 | A | 8.3ms single half sine wave superimposed on rated load | 2 | ||
| Steady State Power Dissipation | PM(AV) | 5 | W | TL = +75°C | 2 | ||
| Operating Temperature Range | TJ | -55 | 150 | °C | 2 | ||
| Storage Temperature Range | TSTG | -55 | 175 | °C | 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 | tin | Terminals: Lead Free Plating (Matte Tin Finish). Solderable per MIL-STD-202, Method 208 | 1 |
CAD (KiCad official)
- Symbol:
SMBJ78CA-13-F - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
smbj78ca-13-f-etched.step/smbj78ca-13-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj78ca-13-f.step/smbj78ca-13-f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (6 pp, sha256
752945fa3acaf469, retrieved 2026-10-31, tier: manufacturer) - 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).