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1SMA5933BT3G-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
markdown1SMA5933BT3G-MS
MSKSEMI · Zener Diodes · SMA
1SMA5933BT3G-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, marked by the molded polarity notch or cathode band; the Zener voltage VZ is 20.9 V min, 22 V nom and 23.1 V max at IZT = 17 mA for the 1SMA5933B. |
| 2 | A | passive | Anode, the end opposite the cathode band; forward voltage is 1.2 V max at IF = 200 mA. |
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 | 20.9 | 22 | 23.1 | V | @ IZT = 17 mA, TA = 25°C | 3 |
| Zener Voltage Tolerance | -5 | 5 | % | B suffix type number indicates tolerance of ±5% | 3 | ||
| Zener Test Current | IZT | 17 | mA | 3 | |||
| Maximum Zener Impedance | ZZT | 17.5 | Ω | @ IZT = 17 mA | 3 | ||
| Maximum Zener Impedance at knee | ZZK | 650 | Ω | @ IZK = 0.25 mA | 3 | ||
| Reverse Leakage Current | IR | 0.5 | μA | @ VR = 16.7 V | 3 | ||
| Maximum DC Zener Current | IZM | 68 | mA | 3 | |||
| Forward Voltage | VF | 1.2 | V | @ IF = 200 mA for all types | 3 | ||
| DC Power Dissipation (lead) | PD | 1.5 | W | TL = 75°C, zero lead length, 1 in square copper pad FR-4 | 2 | ||
| Power Derating above 75°C | 20 | mW/°C | Derate above 75°C | 2 | |||
| DC Power Dissipation (ambient) | PD | 0.5 | W | TA = 25°C, FR-4 board, minimum recommended footprint | 2 | ||
| Power Derating above 25°C | 4 | mW/°C | Derate above 25°C | 2 | |||
| Thermal Resistance, Junction-to-Lead | RθJL | 50 | °C/W | 2 | |||
| Thermal Resistance, Junction-to-Ambient | RθJA | 250 | °C/W | 2 | |||
| Operating and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 2 |
CAD (KiCad official)
- Symbol:
1SMA5933BT3G-MS - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
1sma5933bt3g-ms-etched.step/1sma5933bt3g-ms-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1sma5933bt3g-ms.step/1sma5933bt3g-ms.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (7 pp, sha256
84b58db054664c6f, 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).