1N4737A BK TIN/LEAD

Overview

The 1N4737A BK TIN/LEAD is a silicon Zener diode manufactured by Central Semiconductor Corp. It provides a nominal Zener voltage of 7.5 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 1 W and operates in the through-hole DO-41 package. Key electrical characteristics include a maximum reverse leakage current of 10 µA, a Zener impedance of 4 Ω, and a test current of 34 mA. The component supports an operating temperature range from -65 °C to +200 °C.

Feature Summary

• Provides stable voltage regulation with sharp reverse characteristic
• Features low reverse current level for improved efficiency
• Constructed with a glass case for environmental protection

Applications

• Industrial voltage regulation circuits
• Commercial power supply stabilization
• Computer application voltage reference

Procurement Notes

Verify that the specific ordering suffix matches the required lead composition and packaging format. Confirm RoHS compliance status as tin/lead variants may differ from lead-free equivalents. Ensure the manufacturer designation aligns with Central Semiconductor Corp specifications before finalizing procurement orders.

Selection Notes

Select this component when a 7.5 V reference with 1 W dissipation is required in a DO-41 axial package. Consider the 4 Ω impedance and 34 mA test current for circuit design accuracy. Verify thermal management capabilities for operation up to 200 °C junction temperature.

Part Context

This part belongs to the 1N47xx series of high-reliability silicon Zener diodes produced by Central Semiconductor. The series covers a wide voltage range from 3.3 V to 100 V with consistent 1 W power ratings. These components are designed for robust performance in demanding industrial and commercial environments.

Replacement Considerations

Cross-reference with Vishay Semiconductors 1N4737A or Microsemi 1N4737DGE3 for equivalent specifications. Verify package compatibility and electrical parameter alignment before substitution.