component
UDT14A05L03
Public Made by Adomby adom
Brightking ESD And Surge Protection (TVS/ESD), SOT-143. Pinout reviewed by a person 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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README
markdownUDT14A05L03
Brightking · ESD And Surge Protection (TVS/ESD) · SOT-143
UDT14A05L03 from Brightking, in a SOT-143. 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 | GND | power_in | Ground, connected to the TVS diode anode and the GND line of the USB 2.0 connector. |
| 2 | D+ | bidirectional | Protected high-speed data line (D+) steered by the low-capacitance diodes, with 1.5 pF typ and 3 pF max I/O-to-GND capacitance at 0 V, 1 MHz. |
| 3 | D- | bidirectional | Protected high-speed data line (D-) steered by the low-capacitance diodes, with 1.5 pF typ and 3 pF max I/O-to-GND capacitance at 0 V, 1 MHz. |
| 4 | VBUS | power_in | Protected power line (VBUS) connected to the TVS diode cathode, with 5 V reverse stand-off voltage and 6 V min breakdown at 1 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Brightking |
| Package | SOT-143 |
| Category | Circuit Protection |
| Pins | 4 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Peak pulse current (tp=8/20us waveform) | IPP | 12 | A | tp=8/20us waveform | 2 | ||
| ESD voltage (Contact discharge) | VESD | -30 | 30 | kV | Contact discharge | 2 | |
| ESD voltage (Air discharge) | VESD | -30 | 30 | kV | Air discharge | 2 | |
| Storage & operating temperature range | TSTG, TJ | -55 | 150 | C | 2 | ||
| Reverse stand-off voltage | VRWM | 5 | V | 2 | |||
| Reverse breakdown voltage | VBR | 6 | V | IBR=1mA | 2 | ||
| Reverse leakage current | IR | 5 | uA | VR=5V | 2 | ||
| Clamping voltage (tp=8/20us) | VC | 9.8 | V | tp=8/20us, IPP=1A | 2 | ||
| Clamping voltage (tp=8/20us) | VC | 25 | V | tp=8/20us, IPP=12A | 2 | ||
| Off state junction capacitance (between I/O pins and GND) | CJ | 1.5 | 3 | pF | 0Vdc, f=1MHz | 2 |
CAD (KiCad official)
- Symbol:
UDT14A05L03 - Footprint:
Package_TO_SOT_SMD:SOT-143 - 3D model: SOT-143 (KiCad packages3D, STEP)
- 3D model files:
udt14a05l03-etched.step/udt14a05l03-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);udt14a05l03.step/udt14a05l03.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Brightking datasheet (5 pp, sha256
0c9b4fdb38813add, retrieved 2026-10-22, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).