component
SZP6SMB15CAT3G
Public Made by Adomby adom
Littelfuse 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
markdownSZP6SMB15CAT3G
Littelfuse · TVS · SMB
SZP6SMB15CAT3G from Littelfuse, 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 | Cathode | passive | TVS terminal 1, labeled cathode on the package diagram. The SZP6SMB15CAT3G is bi-directional, so polarity has no effect: VRWM 12.8 V, VBR 14.3-15.8 V @ 1 mA, VC 21.2 V @ IPP 28 A, 600 W peak power at 1 ms. |
| 2 | Anode | passive | TVS terminal 2, labeled anode on the package diagram. The bi-directional part is symmetric: VRWM 12.8 V, IR 5 µA max @ VRWM, VC 21.2 V @ IPP 28 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Working Peak Reverse Voltage | VRWM | 12.8 | V | 4 | |||
| Breakdown Voltage | VBR | 14.3 | 15.05 | 15.8 | V | @ IT = 1 mA | 4 |
| Maximum Reverse Leakage Current | IR | 5 | µA | @ VRWM | 4 | ||
| Maximum Clamping Voltage | VC | 21.2 | V | @ IPP = 28 A | 4 | ||
| Maximum Reverse Peak Pulse Current | IPP | 28 | A | 4 | |||
| Breakdown Voltage Temperature Coefficient | 0.084 | %/°C | 4 | ||||
| Junction Capacitance | C | 645 | pF | Bias Voltage = 0 V, F = 1 MHz, TJ = 25°C | 4 | ||
| Peak Power Dissipation | PPK | 600 | W | TL = 25°C, Pulse Width = 1 ms (10/1000 µs, non-repetitive) | 1 | ||
| DC Power Dissipation | PD | 3 | W | TL = 75°C, zero lead length, 1" square copper pad FR-4 | 1 | ||
| DC Power Dissipation | PD | 0.55 | W | TA = 25°C, FR-4 board, minimum recommended footprint | 1 | ||
| Forward Surge Current | IFSM | 100 | A | TA = 25°C, 1/2 sine wave PW = 8.3 ms, uni-directional only | 1 | ||
| Operating and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| Thermal Resistance Junction-to-Lead | RθJL | 25 | °C/W | 1 | |||
| Thermal Resistance Junction-to-Ambient | RθJA | 226 | °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 | and the terminal finish material is tin(Sn) (IPC/ | 1 |
CAD (KiCad official)
- Symbol:
SZP6SMB15CAT3G - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
szp6smb15cat3g-etched.step/szp6smb15cat3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szp6smb15cat3g.step/szp6smb15cat3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (7 pp, sha256
baf561fbcd6cd66c, retrieved 2026-10-30, 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).