component
BZT585B39T-7
Public Made by Adomby adom
Diodes Incorporated Zener Diodes, SOD-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
markdownBZT585B39T-7
Diodes Incorporated · Zener Diodes · SOD-523
BZT585B39T-7 from Diodes Incorporated, in a SOD-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 | K | passive | Cathode, the terminal marked by the cathode band; the 39V Zener (VZ 38.22 to 39.78V at IZT = 2mA) is reverse-biased with this pin positive. |
| 2 | A | passive | Anode, the terminal opposite the cathode band; forward voltage is 0.9V at IF = 10mA and 1.1V at IF = 100mA, with continuous forward current up to 200mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOD-523 |
| 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 | 38.22 | 39 | 39.78 | V | @ IZT = 2mA | 2 |
| Zener Test Current | IZT | 2 | mA | 2 | |||
| Maximum Zener Impedance | ZZT | 130 | Ω | @ IZT, f = 1kHz | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 350 | Ω | @ IZK = 0.5mA | 2 | ||
| Temperature Coefficient | TC | 48.1 | mV/°C | @ IZT | 2 | ||
| Total Capacitance | CT | 45 | pF | f = 1MHz, VR = 0V | 2 | ||
| Maximum Reverse Current | IR | 0.05 | µA | @ VR = 27.3V | 2 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10mA | 2 | ||
| Forward Voltage | VF | 1.1 | V | IF = 100mA | 2 | ||
| Continuous Forward Current | IF | 200 | mA | TA = +25°C | 2 | ||
| Power Dissipation | PD | 350 | mW | Note 5, FR-4 PCB minimum pad layout | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 2 | ||
| Thermal Resistance, Junction to Ambient Air | RθJA | 357 | °C/W | Note 5, FR-4 PCB minimum pad layout | 2 | ||
| Breakdown Voltage Tolerance | -2 | 2 | % | 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 | • Terminal Connections: Cathode Band • Terminals: Finish - Matte Tin annealed over Alloy 42 leadframe. | 1 |
CAD (KiCad official)
- Symbol:
BZT585B39T-7 - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
bzt585b39t-7-etched.step/bzt585b39t-7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt585b39t-7.step/bzt585b39t-7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (4 pp, sha256
a513086a5a87762d, retrieved 2026-10-22, tier: manufacturer) - 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).