1N4737A BK PBFREE

Overview

The Central Semiconductor Corp 1N4737A BK PBFREE is a silicon Zener diode designed for voltage regulation. It features a nominal Zener voltage of 7.5 V with a 5% tolerance range spanning from 7.125 V to 7.875 V. The device operates within the DO-41 axial leaded package and dissipates up to 1.0 W at 50°C ambient temperature. Electrical characteristics include a maximum reverse current of 10 μA at 5.0 V, a maximum DC current of 5.0 mA, and a temperature coefficient between +0.02% and +0.065% per °C.

Feature Summary

• Provides stable voltage regulation using silicon junction technology
• Features a glass body encapsulation in an industry-standard DO-41 case
• Designed for high reliability in industrial and commercial applications

Applications

• Industrial circuit voltage regulation
• Commercial power supply protection
• Computer system reference voltage generation

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm plating options and compliance status. Confirm availability directly with Central Semiconductor or authorized distributors as stock levels fluctuate. Ensure the component meets RoHS requirements if applicable to your manufacturing process. Request updated datasheets prior to final design approval.

Selection Notes

Select this component when a precise 7.5 V reference is required in a through-hole configuration. Consider the 5% voltage tolerance and positive temperature coefficient for thermal stability analysis. Evaluate the 1.0 W power dissipation capability relative to the expected operating current and ambient temperature conditions to ensure safe operation within the specified -65°C to +200°C range.

Part Context

This part belongs to the 1N4728A through 1N4764A series of 1-watt silicon Zener diodes manufactured by Central Semiconductor. The series covers a wide voltage range from 3.3 V to 100 V, all housed in the DO-41 package. These devices are widely recognized as standard components for general-purpose voltage regulation tasks across various electronic industries.

Replacement Considerations

No official replacement part numbers are documented for the 1N4737A BK PBFREE in the provided datasheet or product notices.