component
BZX84C51-7-F
Public Made by Adomby adom
Diodes Incorporated Zener Diodes, SOT-23. 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
markdownBZX84C51-7-F
Diodes Incorporated · Zener Diodes · SOT-23
BZX84C51-7-F from Diodes Incorporated, in a SOT-23. 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 | Zener anode, connected to the diode symbol on the lower-left terminal of the SOT-23 device schematic. |
| 2 | NC | unconnected | Lower-right terminal, shown in the device schematic with no connection to the diode. |
| 3 | K | passive | Zener cathode, the single top terminal in the device schematic, with a 48.0 V to 54.0 V Zener voltage range for BZX84C51 at IZT = 2.0 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| 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 | 48 | 51 | 54 | V | @ IZT = 2.0 mA | 1 |
| Maximum Zener Impedance | ZZT | 180 | Ω | @ IZT = 2.0 mA, f = 1KHz | 1 | ||
| Maximum Zener Impedance (knee) | ZZK | 400 | Ω | @ IZK = 0.5 mA, f = 1KHz | 1 | ||
| Maximum Reverse Current | IR | 0.1 | μA | VR = 35.7 V | 1 | ||
| Typical Temperature Coefficient | 10 | 12 | mV/°C | @ IZT = 2.0 mA | 1 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10mA, TA = 25°C | 1 | ||
| Power Dissipation (Note 1) | PD | 300 | mW | Device mounted on FR-4 PC board with recommended pad layout | 1 | ||
| Power Dissipation (Note 2) | PD | 350 | mW | Valid provided the terminals are kept at ambient temperature | 1 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 1 | ||
| Thermal Resistance, Junction to Ambient Air (Note 1) | RθJA | 417 | °C/W | Device mounted on FR-4 PC board with recommended pad layout | 1 | ||
| Thermal Resistance, Junction to Ambient Air (Note 2) | RθJA | 357 | °C/W | Valid provided the terminals are kept at ambient temperature | 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:
BZX84C51-7-F - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
bzx84c51-7-f-etched.step/bzx84c51-7-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx84c51-7-f.step/bzx84c51-7-f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (3 pp, sha256
1dd8c04537198d3c, retrieved 2026-10-22, 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).