Andrew
Andrew Content Marketer
On Jun 10, 2025



BZX85C12_T50A Zener Diodes by ON Semiconductor – 12V Regulation for Precision Circuit Protection

The Zener Diodes BZX85C12_T50A  by ON Semiconductor are high-reliability components designed for 12V voltage regulation and protection in a range of electronics applications. With their stable breakdown voltage, 1.3W power rating, and robust axial-leaded DO-41 package, these diodes are widely trusted in automotive systems, industrial equipment, and general-purpose power supplies.

In this blog, we’ll cover the technical specifications, key benefits, use cases, wiring configuration, and why buying Zener Diodes by ON Semiconductor from Xon Electronics ensures high-quality performance for your designs.


Technical Specifications of BZX85C12_T50A

  • Manufacturer: ON Semiconductor

  • Part Number: BZX85C12_T50A

  • Type: Zener Diode

  • Zener Voltage (Vz): 12V

  • Power Dissipation: 1.3W

  • Voltage Tolerance: ±5%

  • Package Type: DO-41 (Axial-Lead)

  • Zener Impedance: 30O

  • Reverse Leakage Current: =0.25µA @ 9.1V

  • Category: Diodes, Zener Diodes

With precise voltage regulation and a durable package, this component is ideal for professional-grade circuit protection.


Key Features of BZX85C12_T50A Zener Diode

  • 12V Nominal Zener Voltage – Great for voltage reference and clamping

  • 1.3W Power Rating – Supports moderate-load designs

  • Axial DO-41 Package – Easy through-hole PCB mounting

  • Low Reverse Leakage – Minimizes power loss and improves accuracy

  • Broad Operating Temperature Range – Suitable for automotive and industrial use

These characteristics make Zener Diodes by ON Semiconductor reliable for engineers building long-lasting electronic systems.


Applications of BZX85C12_T50A

The BZX85C12_T50A Zener Diodes by ON Semiconductor are commonly used in:

  • Voltage Reference Circuits

  • Surge Suppression Systems

  • Power Supply Regulation

  • Microcontroller Input Protection

  • Automotive Electronics

  • Signal Conditioning and Clamping

Where consistent 12V regulation is required, Zener Diodes by ON Semiconductor ensure optimal system performance.


Wiring and Connection Overview

Typical Zener diode regulation setup:

[Input Voltage] ? Resistor ? Zener Diode (Cathode to Input, Anode to Ground) ? [Load Across Zener]

This arrangement allows the Zener to clamp the voltage at 12V, protecting downstream components.


Use Case Scenario: Automotive Sensor Protection

Scenario: An automotive electronics manufacturer needed a compact solution to protect analog sensor inputs from voltage surges.

Problem: Input channels experienced damage from transient spikes during engine start and shutdown.

Solution: Engineers used BZX85C12_T50A Zener Diodes by ON Semiconductor across each sensor input to clamp excess voltage.

Result: Significantly improved sensor reliability and extended system life in harsh automotive environments.


Download Datasheet for BZX85C12_T50A

Need electrical curves, test conditions, or mechanical drawings?

Download BZX85C12_T50A Datasheet from Xon Electronics


Why Buy from Xon Electronics?

Get genuine Zener Diodes by ON Semiconductor and more from a source you can trust:

  • 100% Original ON Semiconductor Components
  • Global Shipping – USA, India, Australia, Europe & beyond
  • OEM Bulk Discounts
  • Application Support for Integration
  • Safe and Secure Online Checkout

Visit www.xonelec.com and buy with confidence today.


Conclusion

The BZX85C12_T50A Zener Diodes by ON Semiconductor are compact, powerful, and dependable. With their 12V voltage regulation and solid DO-41 package, they provide excellent protection and reference stability for sensitive circuits. Order now from Xon Electronics and ensure your electronics stay protected—wherever in the world you build.


FAQs – BZX85C12_T50A Zener Diode

Q1. What is the Zener voltage of this part?
It regulates at 12V with ±5% tolerance.

Q2. What is the power rating of BZX85C12_T50A?
It handles up to 1.3W.

Q3. Is this diode suitable for automotive use?
Yes, it has a wide operating temperature and rugged build.

Q4. Can I use this for reverse polarity protection?
It can clamp voltage spikes but is not a substitute for a full reverse protection circuit.

Q5. Where can I buy this globally?
You can purchase from www.xonelec.com with shipping to USA, India, Australia, Europe, and more.


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