component
RLSD52A121C
Public Made by Adomby adom
RUILON(Shenzhen Ruilongyuan Elec) ESD And Surge Protection (TVS/ESD), SOD-523. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownRLSD52A121C
RUILON(Shenzhen Ruilongyuan Elec) · ESD And Surge Protection (TVS/ESD) · SOD-523
RLSD52A121C from RUILON(Shenzhen Ruilongyuan Elec), in a SOD-523. 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 | 1 | passive | Terminal 1 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RUILON(Shenzhen Ruilongyuan Elec) |
| Package | SOD-523 |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power | PPP | 120 | Watts | tp =8/20μs | 2 | ||
| Peak Pulse Current | Ipp | 8 | A | tp =8/20μs (note1) | 2 | ||
| ESD per IEC 61000-4-2 (Air) | VESD | 30 | kV | per IEC 61000-4-2 (Air) | 2 | ||
| ESD per IEC 61000-4-2 (Contact) | VESD | 30 | kV | per IEC 61000-4-2 (Contact) | 2 | ||
| Lead Soldering Temperature | TL | 260 | ℃ | 10 seconds | 2 | ||
| Junction Temperature | TJ | -55 | 150 | ℃ | 2 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 2 | ||
| Reverse Stand-Off Voltage | VRWM | 12 | V | 2 | |||
| Reverse Breakdown Voltage | VBR | 13.3 | V | IT=1mA | 2 | ||
| Reverse Leakage Current | IR | 0.5 | uA | VRWM=12V,T=25℃ | 2 | ||
| Junction Capacitance | Cj | 10 | pF | VR = 0V, f = 1MHz | 2 |
CAD (KiCad official)
- Symbol:
RLSD52A121C - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
rlsd52a121c-etched.step/rlsd52a121c-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rlsd52a121c.step/rlsd52a121c.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: RUILON(Shenzhen Ruilongyuan Elec) datasheet (4 pp, sha256
608bbf9b8df3486f, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal convention(convention), consensusoff(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).