component
SMAZ5921B
Public Made by Adomby adom
amsem Zener Diodes, DO-214AC(SMA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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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Contents
README
markdownSMAZ5921B
amsem · Zener Diodes · DO-214AC(SMA)
SMAZ5921B from amsem, in a DO-214AC(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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | amsem |
| Package | DO-214AC(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 (nominal VZ at IZT 55.1 mA) | VZ | 6.46 | 6.8 | 7.14 | V | at IZT = 55.1 mA (row 21B; test current from the electrical characteristics table) | 2 |
| Standard VZ tolerance | VZ | -5 | 5 | % | Standard VZ tolerance (Features); suffix B not decoded in datasheet | 1 | |
| Maximum Zener impedance at IZT | ZZT | 1 | Ω | at IZT = 55.1 mA | 2 | ||
| Maximum Zener impedance at IZK | ZZK | 400 | Ω | at IZK = 2.5 mA | 2 | ||
| Reverse leakage current | IR | 200 | μA | at VR = 5.2 V | 2 | ||
| Maximum DC Zener current | IZM | 221 | mA | 2 | |||
| Maximum steady state power dissipation | Ptot | 1500 | mW | at TL = 75 °C (fig. 1) (1) | 1 | ||
| Maximum steady state power dissipation | Ptot | 500 | mW | at TA = 25 °C (fig. 1) (2) | 1 | ||
| Maximum instantaneous forward voltage | VF | 1.5 | V | at 200 mA for all types (3) | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -65 | 150 | °C | 1 | ||
| Typical thermal resistance, junction to lead | RJL | 50 | °C/W | note (1): mounted on PCB with 5.0 mm x 5.0 mm copper pads attached to each terminal | 2 | ||
| Typical thermal resistance, junction to ambient | RJA | 250 | °C/W | note (2): mounted on minimum recommended pad layout | 2 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper Alloy | tin | ● Copper Alloy Leadframe with Lead-Free Plating (Matte Tin Finish). Solderable per MIL-STD-202, Method 208 | 1 |
CAD (KiCad official)
- Symbol:
SMAZ5921B - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
smaz5921b-etched.step/smaz5921b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaz5921b.step/smaz5921b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: amsem datasheet (5 pp, sha256
237dbf84f0c92b3a, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).