E-822

Current Regulation - Diodes, Transistors Overview

The Semitec E-822 is a leaded current regulating diode (CRD) designed to maintain a constant current flow despite voltage fluctuations. It operates within a wide voltage range from less than 1V to 50V and features a rated power of 300 mW. The device maintains a typical pinch-off current of 8.2 mA at 10V, with a minimum limiting current ratio of 1.0 max (I30/Ip). It supports an operating temperature range of -30°C to +150°C and has a maximum junction temperature of 150°C.

Current Regulation - Diodes, Transistors Feature Summary

• Maintains constant current over a wide voltage range regardless of load resistance changes or ripple voltage
• Requires only one component to create a constant current circuit compared to multi-component solutions
• Offers stable performance across a broad operating temperature range up to 150°C

Current Regulation - Diodes, Transistors Applications

• Constant current source for LED brightness stabilization
• Constant voltage circuit for supplying constant current to Zener diodes
• Battery charge and discharge circuits
• Telecommunications line interface
• Current source for piezoelectric actuators

Current Regulation - Diodes, Transistors Procurement Notes

Verify the specific package type required, as the E-series denotes leaded axial construction. Confirm that the 300 mW rated power aligns with thermal management requirements in the target application. Ensure the 50V maximum voltage rating accommodates peak reverse voltages without exceeding limits.

Current Regulation - Diodes, Transistors Selection Notes

Select the E-822 when a fixed 8.2 mA current regulation is needed in through-hole designs. Consider the SMD S-822T variant if surface mount technology is preferred. Evaluate the need for external compensation resistors if precise current stability under self-heating conditions is critical for the design.

Current Regulation - Diodes, Transistors Part Context

The E-822 belongs to Semitec's E-series of current regulating diodes, which are characterized by their leaded axial packaging and 300 mW power rating. This series complements the SMD S-series, offering a robust solution for applications requiring simple, single-component constant current regulation in standard through-hole layouts.

Current Regulation - Diodes, Transistors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.