Microsemi

1N5363B

1N5363B Description

The 1N5363B is a 30V, 5W Zener diode manufactured by Microsemi Corporation, designed for precision voltage regulation and protection in electronic circuits. Housed in a DO-201 package, this through-hole device offers a nominal Zener voltage (Vz) of 30V with a tight ±5% tolerance, ensuring reliable performance in demanding applications. With a maximum reverse leakage current of 500 nA @ 21.6V and a low forward voltage drop (1.2V @ 1A), it provides efficient operation while minimizing power dissipation. The diode features a dynamic impedance (Zzt) of 8 Ohms, enhancing its stability under varying load conditions. Although marked as obsolete, it remains a robust choice for legacy designs requiring high-power Zener regulation.

1N5363B Features

• High Power Handling: 5W power dissipation capability for robust performance in voltage regulation.
• Precision Voltage Reference: 30V nominal Zener voltage with ±5% tolerance for accurate regulation.
• Low Leakage Current: 500 nA @ 21.6V ensures minimal power loss in standby conditions.
• Stable Dynamic Impedance: 8 Ohms (max) ensures consistent regulation under load variations.
• Wide Compatibility: Through-hole (DO-201) packaging simplifies integration into existing designs.
• Reliability: REACH Unaffected and MSL 1 (Unlimited) for long-term storage and environmental resilience.

1N5363B Applications

• Voltage Regulation: Ideal for power supplies, voltage stabilizers, and reference circuits requiring stable 30V output.
• Overvoltage Protection: Used in surge suppression and clamping circuits to safeguard sensitive components.
• Industrial Electronics: Suitable for motor control, instrumentation, and automotive systems where high-power Zeners are critical.
• Legacy Systems: A dependable choice for military/aerospace and telecom hardware due to its proven reliability.

Conclusion of 1N5363B

The 1N5363B stands out as a high-power, precision Zener diode with excellent voltage regulation and low leakage characteristics. While obsolete, its 5W power rating, ±5% tolerance, and robust DO-201 package make it a preferred solution for engineers maintaining or designing systems requiring reliable 30V regulation. Its applications span industrial, automotive, and legacy electronic systems, ensuring stability and protection in critical circuits. For designs demanding high-power Zener performance, the 1N5363B remains a technically sound choice.