component
MMSZ5255A_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
markdownMMSZ5255A_R1_00001
PANJIT International · Zener Diodes · SOD-123
MMSZ5255A_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, marked by the polarity diagram; for the MMSZ5255A the nominal Zener voltage is 28 V (min 27.44 V, max 28.56 V) at IZT 20 mA. |
| 2 | Anode | passive | Anode terminal of the Zener diode; the package is rated for 500 mW maximum power dissipation at TA=25°C (mounted on 5.0 mm² land areas) with operating junction and storage temperature from -50 °C to +150 °C. |
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 (min / nom / max) | VZ | 27.44 | 28 | 28.56 | V | @ IZT = 4.5 mA | 2 |
| Max Zener impedance | ZZT | 44 | Ω | @ IZT = 4.5 mA | 2 | ||
| Max Zener impedance (knee) | ZZK | 600 | Ω | @ IZK = 0.25 mA | 2 | ||
| Max reverse leakage current | IR | 0.1 | μA | @ VR = 21.0 V | 2 | ||
| Maximum power dissipation | PD | 500 | mW | TA=25°C (Notes A) | 1 | ||
| Operating junction and storage temperature range | TJ | -50 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
MMSZ5255A_R1_00001 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5255a-r1-00001-etched.step/mmsz5255a-r1-00001-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5255a-r1-00001.step/mmsz5255a-r1-00001.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PANJIT International datasheet (7 pp, sha256
5fea91738301030e, retrieved 2026-10-17, 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).