1N3002RB

Overview

The 1N3002RB is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation and reference applications. It features a nominal Zener voltage of 75V with a tolerance of ±5%. The device supports a maximum power dissipation of 10W and operates within a specified temperature range. Packaged in the DO-213AA (TO-220AB) format, it utilizes a stud mount or chassis mount configuration for efficient thermal management. Key electrical characteristics include a maximum impedance of 22 Ohms and a test current typically associated with standard 10W Zener ratings.

Feature Summary

• Provides stable 75V voltage regulation with high power handling capability
• Utilizes robust DO-213AA package for effective heat dissipation
• Offers precise voltage tolerance suitable for critical reference circuits

Applications

• High-power voltage regulation in industrial equipment
• Overvoltage protection circuits requiring 75V clamping
• Precision voltage references in measurement instrumentation

Procurement Notes

Verify the specific suffix codes against the official Microchip datasheet to ensure correct voltage tolerance and package variant. Confirm that the DO-213AA mounting style matches your thermal design requirements. Check for any military-grade equivalents like JAN1N3002 if environmental ruggedness is required. Ensure compatibility with existing heatsinking infrastructure due to the 10W power rating.

Selection Notes

Select this component when a 75V Zener reference with 10W dissipation is needed. Compare against lower power SMD alternatives if space is constrained, noting the larger footprint of the TO-220 style package. Consider the ±5% tolerance for circuit precision requirements. Evaluate thermal resistance values from the datasheet to determine appropriate heatsink sizing for continuous operation at full load.

Part Context

The 1N3002RB belongs to the standard Zener diode family produced by Microchip Technology, formerly Microsemi. It serves as a discrete semiconductor solution for power electronics. The part number indicates a specific voltage and power class within the broader 1N3002 series, which includes various packaging options like DO-4 and DO-203AA for different mounting needs.

Replacement Considerations

Direct substitutes include JAN1N3002RBJAN for hermetic sealed versions. Other 75V 10W Zener diodes in DO-213AA packages from other manufacturers may be compatible if pinout and thermal characteristics match. Verify exact voltage tolerance and impedance specifications before swapping.