Product: Fast-Recovery Diode, Model 1N5399 Key benefits Fast recovery behavior reduces switching losses and limits reverse-recovery time for improved efficiency in high-voltage switching circuits. Handles sustained forward current of 1.5 A, allowing reliable operation in many general-purpose rectification and protection roles. High maximum repetitive peak reverse voltage (1000 V) protects circuits from high-voltage reversal, making it suitable for demanding, high-voltage environments. Compact DO-15 package (60 x 2 mm / 2.4" x 0.08") and low weight (3 g) simplify installation and save board or enclosure space. What it does and why you need it Acts as a fast-recovery rectifier and reverse-voltage protection component to prevent damage from voltage spikes and polarity reversals. Improves overall circuit responsiveness and reduces heat from switching losses compared with slower diodes. Provides a robust, high-voltage-rated option where compact size and reliable forward current handling are required. Key specifications Product name: Fast-Recovery Diode Model: 1N5399 Package type: DO-15 Average forward current: 1.5 A Maximum repetitive peak reverse voltage: 1000 V Overall size: 60 x 2 mm (2.4" x 0.08") Color: Black Weight: 3 g Compatibility and materials Standard DO-15 package compatible with through-hole mounting and common PCB or chassis mounting practices. Designed for use in circuits requiring the stated electrical ratings; verify compatibility with your system’s voltage, current, and thermal requirements before use. Practical use scenarios Power supply rectification: Use as a high-voltage rectifier in switch-mode or linear power supplies where fast recovery improves efficiency and reduces EMI. Transient protection in motor drives and industrial controls: Install across inductive loads or in snubber networks to clamp reverse voltage spikes and protect switching transistors. High-voltage circuitry and test equipment: Suitable for signal and power paths that require a diode rated up to 1000 V and up to 1.5 A continuous forward current. Notes for installation Confirm proper polarity during mounting; observe the DO-15 package orientation consistent with your circuit design. Ensure adequate thermal management for sustained operation at rated current, depending on your application’s ambient conditions and mounting.