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1N5349B

1N5349B Description

The 1N5349B is a 12V, 5W Zener diode from Diotec Semiconductor, designed for precision voltage regulation and protection in electronic circuits. Housed in a DO-201 package, this through-hole-mount component features a ±5% tolerance on its nominal Zener voltage (Vz), ensuring reliable performance in demanding environments. With a reverse leakage current of just 2 µA at 9.1V, it minimizes power loss, while its low dynamic impedance (Zzt) of 2.5 Ohms enhances stability under varying load conditions. The diode complies with EAR99 ECCN and HTSUS 8541.10.0050 classifications, making it suitable for global applications.

1N5349B Features

• High Power Handling: Rated for 5W dissipation, ideal for circuits requiring robust surge protection.
• Precision Voltage Regulation: 12V nominal Zener voltage with tight ±5% tolerance for consistent performance.
• Low Leakage Current: 2 µA at 9.1V ensures efficiency in low-power designs.
• Stable Dynamic Response: 2.5 Ohms max impedance (Zzt) minimizes voltage fluctuations.
• Durable Packaging: DO-201 case offers mechanical strength and heat dissipation.
• Compliance: RoHS-not-applicable and REACH vendor-undefined, though suitable for industrial use.

1N5349B Applications

• Voltage Regulation: Used in power supplies, voltage references, and precision analog circuits.
• Overvoltage Protection: Safeguards sensitive components in automotive, industrial, and telecom systems.
• Surge Suppression: Protects against transients in AC/DC converters and relay drivers.
• Signal Clipping: Limits signal amplitudes in audio and RF circuits.
• Battery Management: Ensures stable voltage thresholds in charging systems.

Conclusion of 1N5349B

The 1N5349B stands out for its high power rating, precision voltage control, and low leakage, making it a versatile choice for engineers. Its DO-201 package and through-hole design simplify integration, while its 5W capability suits high-stress environments. Whether for regulation, protection, or clipping, this Zener diode delivers reliability and performance, particularly in industrial, automotive, and telecom applications.