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BZX85C3V9 Zener diode with nominal 3.9V voltage, ±5% tolerance, and 1W power dissipation. Packaged in DO-204AL (DO-41) for through-hole mounting.
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BZX85C3V9

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
Zener diode with nominal 3.9V voltage, ±5% tolerance, and 1W power dissipation. Packaged in DO-204AL (DO-41) for through-hole mounting.
✓ Total Stock: 3,000 pcs

BZX85C3V9 Available from 1 distributor

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BZX85C3V9 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Forward Voltage
Impedance (Max) (Zzt)
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Power
Power Dissipation
Supplier Device Package
Tolerance
Voltage
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BZX85C3V9 Description

Short technical summary and product information.

The BZX85C3V9 is a 3.9V Zener diode from On Semiconductor designed for voltage regulation and protection applications. It offers a nominal Zener voltage of 3.9V with a tolerance of ±5%, ensuring reliable voltage clamping. The diode can dissipate up to 1 watt of power, making it suitable for moderate power circuits.

 

With a maximum impedance of 15Ω (Zzt), the device maintains stable regulation over a range of currents. The forward voltage is 1.2V at 200mA, and the reverse leakage current is limited to 5µA at 1V. The operating junction temperature range spans from -65°C to 200°C, allowing use in harsh environments.

 

This Zener diode is commonly used in shunt regulators, overvoltage protection, and reference voltage circuits. The through-hole DO-204AL (DO-41) package facilitates easy insertion on printed circuit boards and prototyping. The component is RoHS3 compliant and has an MSL of 1 (unlimited).

BZX85C3V9 Quick Information

Product Type: Zener Diode
Canonical Name: Zener Diode 3.9V 1W DO-204AL (DO-41)
Subcategory: Single Zener Diode

BZX85C3V9 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BZX85C3V9 Features

  • Nominal Zener voltage of 3.9V.
  • ±5% voltage tolerance ensures accuracy.
  • 1W maximum power dissipation capability.
  • Through-hole DO-204AL (DO-41) package.

BZX85C3V9 Applications

  • Used in voltage regulation circuits.
  • Ideal for overvoltage protection.
  • Suitable for reference voltage sources.
  • Common in shunt regulator designs.

BZX85C3V9 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the BZX85C3V9?

3.9V nominal with ±5% tolerance.

What is the forward voltage of the BZX85C3V9?

1.2V maximum at 200mA forward current.

What package does the BZX85C3V9 come in?

Through-hole DO-204AL (DO-41) package.

What is the power dissipation rating of the BZX85C3V9?

1W maximum.

What is the operating temperature range of the BZX85C3V9?

-65°C to 200°C junction temperature.

What is the maximum Zzt impedance of the BZX85C3V9?

15Ω maximum.

What is the reverse leakage current of the BZX85C3V9?

5µA maximum at 1V reverse voltage.

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