The 1N5243 from Vishay is a Silicon Planar Zener Power Diode designed for precise voltage regulation and stabilization in high-reliability aerospace and space electronics. This diode provides a nominal zener voltage of 13 V and features an ultra-low reverse leakage current of just 0.5 µA, ensuring stable performance in sensitive electronic circuits.
The diode offers a dynamic resistance range of 13 to 600 ohms and a forward voltage of 1.1 V, supporting efficient operation across varying load conditions. It delivers a power dissipation capability of up to 500 mW and exhibits a temperature coefficient of 0.079, enabling consistent voltage control over a wide operating temperature range. The device maintains a standard Zener voltage tolerance of ±5% and has a thermal resistance of 300 K/W (junction to ambient), contributing to effective thermal management.
Compliant with Moisture Sensitivity Level (MSL) 1 and molded using a UL 94 V-0 rated flammability compound, the 1N5243 meets stringent reliability and safety requirements. Housed in a compact DO-35 package with a mass of 125 mg and fully RoHS compliant, this space-qualified Zener diode is ideal for voltage stabilization, reference voltage generation, and protection circuits in satellite, aerospace, and other mission-critical applications.
