Sensitron Semiconductor’s series of standard recovery rectifiers, identified as 1N4245 through 1N4249, are presented in their Technical Datasheet 5083, Revision A.4. These rectifiers are hermetically sealed to ensure high reliability and are specifically qualified according to MIL-PRF-19500/286 standards, making them ideal for applications in military, aviation, and shipboard systems, as well as in other high-reliability environments.
Key Features
The series showcases several benefits and features, such as a hermetic seal achieved through a non-cavity glass package, resulting in voidless construction. They are metallurgically bonded, adding to their robustness, and undergo a complete hot solder dip to ensure solderability. Additionally, the devices are available in various quality levels like JAN, JANTX, and JANTXV, indicating their suitability for rigorous military specifications.
Maximum Ratings and Electrical Characteristics
The datasheet specifies the maximum operating and storage temperature range from -65°C to +175°C and outlines thermal resistance as 42 °C/W (junction to lead). The devices can handle a forward surge current of 25A for an 8.3 ms half-sine wave. They are designed to manage an average rectified current of 1A, with a peak inverse voltage (PIV) ranging from 200V to 1000V based on the model number. The forward voltage drop (VF) is presented at 1.3V for a pulsed forward current of 3A at 25°C and 1.5°C. Additionally, the maximum surge current (IFSM) is specified at 25A, and the maximum reverse recovery time is indicated to be 5000 nanoseconds.
Package Dimensions
The datasheet also provides detailed package dimensions for both axial lead rectifier outlines and MELF (Metal Electrode Leadless Face) package styles. Each type is distinguishably marked by a dark band on the cathode side of the device. The axial lead rectifier dimensions encompass a broad range in inches and millimeters, covering diameters and lengths suitable for various mounting requirements. The MELF package outline dimensions are similarly provided, offering alternative packaging options for different application needs.
The information enclosed in the datasheet emphasizes Sensitron Semiconductor’s commitment to providing high-standard rectifiers suitable for demanding applications that require consistent performance and reliability. With precise technical specifics and distinctive design characteristics, these components are well-suited for complex electronic systems.
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