1N4744A-T50R

Overview

The Fairchild Semiconductor 1N4744A-T50R is a single silicon Zener diode housed in an axial leaded DO-41 package. It provides a nominal Zener voltage of 15 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1 W and operates within a temperature range of -65°C to +200°C. Electrical characteristics include a maximum Zener impedance of 14 Ohms at a test current of 17 mA, a leakage current of 5 µA at 11.4 V, and a non-repetitive peak reverse surge current of 304 mA.

Feature Summary

• Provides stable voltage regulation through controlled avalanche breakdown in the reverse bias region.
• Features a robust glass or plastic encapsulated axial lead construction for reliable through-hole mounting.
• Capable of handling high thermal loads with a wide operating temperature range extending up to 200°C.

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clipping and clamping waveforms in signal processing

Procurement Notes

Verify that the ordering suffix T50R corresponds to tape and reel packaging containing 3000 units per reel. Confirm the manufacturer designation aligns with onsemi specifications, as Fairchild Semiconductor products are now distributed under this entity. Ensure compliance with RoHS standards if required by your assembly process.

Selection Notes

Select this component when a 15 V regulated potential is necessary within a circuit design. The DO-41 package accommodates standard through-hole manufacturing techniques. Evaluate the 1 W power dissipation capability against expected thermal conditions to ensure safe operation without exceeding junction temperature limits.

Part Context

This part belongs to the 1N4728A through 1N4758A series of one-watt Zener diodes manufactured by onsemi. The series covers a broad spectrum of voltage ratings from 3.3 V to 56 V. All devices share identical physical dimensions and thermal characteristics, differing primarily in their specific breakdown voltages and associated impedance values.

Replacement Considerations

Cross-reference with other manufacturers offering equivalent 1W Zener diodes in the DO-41 package. Verify that substitute parts match the 15 V nominal voltage, ±5% tolerance, and 14 Ohm maximum impedance specifications to maintain circuit performance integrity.