component
LMSZ5254BT1G
Public Made by Adomby adom
LRC Zener Diodes, SOD-123. 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
markdownLMSZ5254BT1G
LRC · Zener Diodes · SOD-123
LMSZ5254BT1G from LRC, in a SOD-123. 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 | Cathode terminal of the Zener diode, identified on the package by the polarity band. |
| 2 | Anode | passive | Anode terminal of the Zener diode; the datasheet gives no pin-specific electrical limits beyond the device maximum ratings. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOD-123 |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Zener Voltage | VZ | 25.65 | 27 | 28.35 | V | @ IZT | 3 |
| Zener voltage tolerance (standard) | -5 | 5 | % | on nominal Zener voltage (Note 3) | 3 | ||
| Maximum Zener Impedance | ZZT | 41 | Ω | @ IZT | 3 | ||
| Maximum Zener Impedance | ZZK | 600 | Ω | @ IZK | 3 | ||
| Reverse Leakage Current | IR | 0.1 | µA | @ VR = 21 V | 3 | ||
| Forward Voltage | VF | 0.9 | V | @ IF = 10 mA | 3 | ||
| Reverse Zener test current | IZT | 4.6 | mA | test current for VZ and ZZT | 3 | ||
| Reverse Zener knee test current | IZK | 0.25 | mA | test current for ZZK | 3 | ||
| Total Power Dissipation on FR-5 Board | PD | 500 | mW | @ TL = 75°C (Note 1, FR-5 board) | 1 | ||
| Derating above 75°C | 6.7 | mW/°C | derated above TL = 75°C | 1 | |||
| Thermal Resistance, Junction-to-Ambient | RJA | 340 | °C/W | (Note 2) | 1 | ||
| Thermal Resistance, Junction-to-Lead | RJL | 150 | °C/W | (Note 2) | 1 | ||
| Junction and Storage Temperature Range | TJ, Tstg | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
LMSZ5254BT1G - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
lmsz5254bt1g-etched.step/lmsz5254bt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lmsz5254bt1g.step/lmsz5254bt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (6 pp, sha256
9dcd48ce1826b714, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).