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BZX84C20T-7-F
Public Made by Adomby adom
Diodes Incorporated Zener Diodes, SOT-523. 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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Contents
README
markdownBZX84C20T-7-F
Diodes Incorporated · Zener Diodes · SOT-523
BZX84C20T-7-F from Diodes Incorporated, in a SOT-523. 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 | A | passive | Anode of the Zener diode, the lower-left terminal in the top-view device schematic; the diode conducts forward at VF 0.9 V at IF = 10mA. |
| 2 | NC | unconnected | Lower-right terminal, shown in the device schematic with no internal connection to the diode. |
| 3 | K | passive | Cathode of the Zener diode, the single top terminal in the device schematic; for the 20V type, VZ is 18.8 to 21.2 V at IZT = 5mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-523 |
| Category | Diodes |
| Pins | 3 |
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 | 18.8 | 20 | 21.2 | V | IZT = 5.0 mA | 2 |
| Maximum Zener Impedance | ZZT | 55 | Ω | @ IZT = 5.0 mA, f = 1kHz | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 225 | Ω | @ IZK = 1.0 mA, f = 1kHz | 2 | ||
| Maximum Reverse Current | IR | 0.1 | uA | VR = 14.0 V | 2 | ||
| Temperature Coefficient of Zener Voltage | 14.4 | 18 | mV/°C | IZT = 5mA | 2 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10mA | 1 | ||
| Power Dissipation | PD | 150 | mW | Note 1, device mounted on FR-4 PC board | 1 | ||
| Thermal Resistance, Junction to Ambient Air | RθJA | 833 | °C/W | Note 1, FR-4 PC board with recommended pad layout | 1 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 1 |
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 | tin | • Terminals: Solderable per MIL-STD-202, Method 208 • Lead Free Plating (Matte Tin Finish annealed over Alloy 42 | 1 |
CAD (KiCad official)
- Symbol:
BZX84C20T-7-F - Footprint:
Package_TO_SOT_SMD:SOT-523 - 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
bzx84c20t-7-f-etched.step/bzx84c20t-7-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx84c20t-7-f.step/bzx84c20t-7-f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (4 pp, sha256
750b498187f6aab4, retrieved 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).