component
SZMMSZ5270BT1G
Public Made by Adomby adom
onsemi 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
markdownSZMMSZ5270BT1G
onsemi · Zener Diodes · SOD-123
SZMMSZ5270BT1G from onsemi, 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 (STYLE 1: Pin 1 = Cathode). |
| 2 | ANODE | passive | Anode terminal of the Zener diode, opposite the polarity-band cathode (STYLE 1: Pin 2 = Anode). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| 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 (nominal) | VZ | 86.45 | 91 | 95.55 | V | @ IZT = 1.4 mA; TA = 25°C; B suffix (5% tolerance) | 3 |
| Zener voltage tolerance (B suffix) | -5 | 5 | % | On nominal Zener voltage (Note 3) | 3 | ||
| Maximum Zener impedance | ZZT | 400 | ohm | @ IZT = 1.4 mA; IZ(AC) = 0.1 IZ(DC), f = 1 kHz (Note 5) | 3 | ||
| Maximum Zener impedance | ZZK | 2300 | ohm | @ IZK = 0.25 mA; IZ(AC) = 0.1 IZ(DC), f = 1 kHz (Note 5) | 3 | ||
| Reverse leakage current | IR | 0.1 | µA | @ VR = 69 V | 3 | ||
| Forward voltage | VF | 0.9 | V | @ IF = 10 mA; 5% table (B suffix) | 3 | ||
| Total power dissipation on FR-5 board | PD | 500 | mW | TL = 75°C (Note 1) | 1 | ||
| Derating above 75°C | PD | 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:
SZMMSZ5270BT1G - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
szmmsz5270bt1g-etched.step/szmmsz5270bt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szmmsz5270bt1g.step/szmmsz5270bt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (8 pp, sha256
c22dd8fe4fe15c0e, 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).