1N4751A-T50A

Overview

The Fairchild Semiconductor 1N4751A-T50A is a single silicon planar Zener diode housed in an axial leaded DO-41 package. It provides a nominal Zener voltage of 30 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1 W at a lead temperature of 50°C or less, derating linearly above this threshold. Electrical characteristics include a maximum dynamic impedance of 40 Ω and a reverse leakage current not exceeding 5 µA at 22.8 V. The component operates within a junction and storage temperature range of -65°C to +200°C.

Feature Summary

• Utilizes silicon planar technology for stable voltage regulation
• Features hermetic glass sealing within the DO-41 axial package
• Supports high thermal stability across extended operating temperatures

Applications

• Voltage reference circuits
• Overvoltage protection networks
• General-purpose voltage regulation

Procurement Notes

Verify that the ordering suffix T50A corresponds specifically to fan-fold packaging as documented in official manufacturer tables. Confirm compliance requirements such as RoHS status directly from the datasheet, as manufacturing origins may vary between Fairchild and onsemi designations. Ensure the specific lot traceability matches project documentation standards before finalizing procurement orders.

Selection Notes

Select this component when a precise 30 V regulation point is required in through-hole designs. The DO-41 form factor accommodates standard manual assembly processes. Evaluate the 40 Ω impedance specification against circuit sensitivity requirements to ensure adequate noise performance. Verify that the 1 W power rating aligns with the expected thermal environment and derating curves.

Part Context

This device belongs to the 1N4728A through 1N4758A series of one-watt Zener diodes manufactured by Semiconductor Components Industries, LLC (onsemi). The 1N4751A variant specifically targets the 30 V segment of this broad lineup. The T50A suffix indicates a specific shipping configuration distinct from bulk bag or tape-and-reel options.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N4751A designation. Verify pinout compatibility and physical dimensions match the DO-41 case outline. Confirm electrical parameters including Zener voltage tolerance and impedance are equivalent for direct substitution.