component
SP4203-01FTG-C
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), SOD-323. 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
markdownSP4203-01FTG-C
Littelfuse · ESD And Surge Protection (TVS/ESD) · SOD-323
SP4203-01FTG-C from Littelfuse, in a SOD-323. 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 | Pin 1 | passive | Bidirectional TVS diode terminal 1 (I/O), protects against ±30kV ESD contact/air (IEC 61000-4-2) and 10A 8/20µs surge, 0.5pF typical capacitance, 3.3V reverse standoff. |
| 2 | Pin 2 | passive | Bidirectional TVS diode terminal 2 (I/O), protects against ±30kV ESD contact/air (IEC 61000-4-2) and 10A 8/20µs surge, 0.5pF typical capacitance, 3.3V reverse standoff. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SOD-323 |
| 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 | 5.5 | 6.6 | V | IR=1mA | 2 | |
| Reverse Leakage Current | ILEAK | 0.1 | μA | VR=3.3V | 2 | ||
| Clamp Voltage | VC | 7.5 | 10 | V | IPP=1A, tP=8/20µs | 2 | |
| Clamp Voltage | VC | 16.5 | 20 | V | IPP=10A, tP=8/20µs | 2 | |
| Diode Capacitance | CI/O-I/O | 0.5 | 0.9 | pF | Reverse Bias=0V, f=1MHz | 2 | |
| Peak Current | IPP | 10 | A | tp=8/20μs | 2 | ||
| Operating Temperature | TOP | -40 | 125 | °C | 2 | ||
| Storage Temperature | TSTOR | -55 | 150 | °C | 2 | ||
| Reverse Standoff Voltage | VRWM | 3.3 | V | IR=1μA | 2 | ||
| Dynamic Resistance | RDYN | 0.54 | Ω | TLP, tP=100ns, I/O to I/O | 2 | ||
| ESD Withstand Voltage (Contact) | VESD | -30 | 30 | kV | IEC 61000-4-2 (Contact Discharge) | 2 | |
| ESD Withstand Voltage (Air) | VESD | -30 | 30 | kV | IEC 61000-4-2 (Air Discharge) | 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 | Lead Plating Matte Tin Lead Material Alloy 42 | 4 |
CAD (KiCad official)
- Symbol:
SP4203-01FTG-C - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
sp4203-01ftg-c-etched.step/sp4203-01ftg-c-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sp4203-01ftg-c.step/sp4203-01ftg-c.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (5 pp, sha256
ff04c563b042c013, retrieved 2026-10-22, 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).