component
PTZ12B-MS
Public Made by Adomby adom
MSKSEMI Zener Diodes, SMA. 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
markdownPTZ12B-MS
MSKSEMI · Zener Diodes · SMA
PTZ12B-MS from MSKSEMI, in a SMA. 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 | K | passive | Cathode end of the zener diode, marked by the color band on the SMA body; the 12B part has a Zener voltage of 12.0 V min to 13.5 V max at 20 mA test current. |
| 2 | A | passive | Anode end of the zener diode, opposite the color band on the SMA body; 1.0 W maximum power dissipation at 25 °C ambient. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SMA |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener Voltage | VZ | 12 | 12.5 | 13.5 | V | IZT = 20 mA, Ta = 25 °C | 3 |
| Maximum Zener Impedance | ZZ | 8 | Ω | IZ = 20 mA | 3 | ||
| Maximum Reverse Current | IR | 10 | μA | VR = 9.0 V | 3 | ||
| Typical Temperature Coefficient | 8.7 | mV/ºC | IZ = 20 mA | 3 | |||
| Power Dissipation | PD | 1 | W | Rating at 25 °C ambient temperature | 2 | ||
| Junction Temperature | TJ | 150 | ºC | Rating at 25 °C ambient temperature | 2 | ||
| Storage Temperature Range | TSTG | -55 | 150 | ºC | 2 |
CAD (KiCad official)
- Symbol:
PTZ12B-MS - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
ptz12b-ms-etched.step/ptz12b-ms-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ptz12b-ms.step/ptz12b-ms.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (5 pp, sha256
b667407134cededf, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).