component
RLST143A053LV
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RUILON(Shenzhen Ruilongyuan Elec) ESD Protection Devices, SOT-143. 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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README
markdownRLST143A053LV
RUILON(Shenzhen Ruilongyuan Elec) · ESD Protection Devices · SOT-143
RLST143A053LV from RUILON(Shenzhen Ruilongyuan Elec), 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 | Connects to the anode of the avalanche TVS diode and the lower steering-diode rail, serving as the ground/reference pin of the array (VRWM 5 V, VBR min 6 V at 1 mA). |
| 2 | I/O | passive | Protected line pin of the steering-diode array, rated for ±8 kV contact and ±15 kV air ESD per IEC61000-4-2 with 3 pF typical capacitance. |
| 3 | I/O | passive | Protected line pin of the steering-diode array, rated for ±8 kV contact and ±15 kV air ESD per IEC61000-4-2 with 3 pF typical capacitance. |
| 4 | VCC/TVS cathode | power_in | Connects to the upper steering-diode rail and the cathode of the avalanche TVS diode, which clamps at 9.8 V (VC at 1 A) with 5 V working voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RUILON(Shenzhen Ruilongyuan Elec) |
| Package | SOT-143 |
| Category | TVS/Fuse/Board Level 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 Power | PPK | 300 | Watts | tp = 8/20μs | 3 | ||
| ESD Voltage (Contact) | VESD | -8 | 8 | Kv | Contact | 3 | |
| ESD Voltage (Air) | VESD | -15 | 15 | Kv | Air | 3 | |
| Lead Soldering Temperature | TL | 260 | °C | 10 sec. | 3 | ||
| Operating Temperature | TJ | -55 | 125 | °C | 3 | ||
| Storage Temperature | TSTG | -55 | 150 | °C | 3 | ||
| Minimum Breakdown Voltage | VBR | 6 | V | @1mA | 3 | ||
| Reverse Stand-Off Voltage | VRWM | 5 | V | 3 | |||
| Peak Pulse Voltage | VC | 9.8 | V | @1A, 8/20μS | 3 | ||
| Peak Pulse Current | IPP | 5 | A | @8/20μS | 3 | ||
| Reverse Leakage | IR | 5 | μA | @VRWM | 3 | ||
| Typical Capacitance | CJ | 3 | pF | @ 1 MHz | 3 | ||
| Average ramp-up rate (TL to TP) | 3 | °C/second | Pb-free assembly | 5 | |||
| Preheat Temperature Min (TS min) | TS min | 150 | °C | Pb-free assembly | 5 | ||
| Preheat Temperature Max (TS max) | TS max | 200 | °C | Pb-free assembly | 5 | ||
| Preheat Time (ts) | ts | 60 | 180 | seconds | min to max, Pb-free assembly | 5 | |
| TS max to TL Ramp-up Rate | 3 | °C/second | Pb-free assembly | 5 | |||
| Time maintained above TL Temperature | TL | 217 | °C | Pb-free assembly | 5 | ||
| Time maintained above TL | tL | 60 | 150 | seconds | Pb-free assembly | 5 | |
| Peak Temperature | TP | 260 | °C | Pb-free assembly | 5 | ||
| Time within 5°C of actual Peak Temperature | tP | 20 | 40 | seconds | Pb-free assembly | 5 | |
| Ramp-down Rate | 6 | °C/second | Pb-free assembly | 5 | |||
| Time 25°C to Peak Temperature | 8 | minutes | Pb-free assembly | 5 |
CAD (KiCad official)
- Symbol:
RLST143A053LV - Footprint:
Package_TO_SOT_SMD:SOT-143 - 3D model: SOT-143 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: RUILON(Shenzhen Ruilongyuan Elec) datasheet (6 pp, sha256
1032dc23f160bfb6, retrieved 2026-11-04, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).