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MMSZ5259B_R1_00001
Public Made by Adomby adom
PANJIT International 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
markdownMMSZ5259B_R1_00001
PANJIT International · Zener Diodes · SOD-123
MMSZ5259B_R1_00001 from PANJIT International, 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; the datasheet pin diagram labels pin 1 as Cathode, with a total power dissipation rating of 500 mW and a junction/storage temperature range of -55 to +150 °C for the device. |
| 2 | Anode | passive | Anode terminal of the Zener diode, labeled pin 2 in the datasheet pin diagram alongside the 500 mW power dissipation and -55 to +150 °C junction and storage temperature limits. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal Zener Voltage | 37.05 | 39 | 40.95 | V | 2 | ||
| Max Zener Impedance (ZZT) | ZZT | 80 | Ω | I_ZT = 3.2 mA | 2 | ||
| Max Zener Impedance (ZZK) | ZZK | 800 | Ω | I_ZK = 0.25 mA | 2 | ||
| Max Reverse Leakage Current | IR | 0.1 | µA | V_R = 30 V | 2 | ||
| Total Power Dissipation | PD | 500 | mW | Notes A: mounted on 100 cm2 (1 mm thick) copper areas | 1 | ||
| Operating Junction and Storage Temperature Range | TJ | -55 | 150 | °C | 1 | ||
| Typical Thermal Resistance Junction-to-Ambient (value 430) | RθJA | 430 | °C/W | Notes A/B; note assignment of this value is not clear in the text | 1 | ||
| Typical Thermal Resistance Junction-to-Ambient (value 325) | RθJA | 325 | °C/W | Notes A/B; note assignment of this value is not clear in the text | 1 |
CAD (KiCad official)
- Symbol:
MMSZ5259B_R1_00001 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5259b-r1-00001-etched.step/mmsz5259b-r1-00001-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5259b-r1-00001.step/mmsz5259b-r1-00001.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PANJIT International datasheet (6 pp, sha256
16f4d214fea67068, 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).