1N4737A-T

Overview

The Vishay 1N4737A-T is a silicon planar power Zener diode housed in a DO-41 (DO-204AL) axial lead package. It provides a nominal Zener voltage of 7.5 V with a standard tolerance of ±5%. The device operates at a test current of 34 mA and features a maximum dynamic resistance of 4 Ω at this current level. Maximum reverse leakage current is specified as 10 µA at 5 V. The component supports a peak power dissipation of 1300 mW for short pulses and maintains a junction temperature rating up to 175 °C.

Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Features double slug type construction within a hermetically sealed glass case
• Provides oxide passivated die protection against environmental factors

Applications

• Voltage stabilization circuits
• High power rating clipping applications

Procurement Notes

Verify the specific ordering suffix matches the required packaging format, such as TAP or TR, as these indicate distinct reel or ammopack quantities. Confirm RoHS compliance status through official Vishay documentation prior to integration. Ensure thermal management strategies account for the specified thermal resistance values during continuous operation.

Selection Notes

Select this component when a precise 7.5 V reference point is required in through-hole designs. The DO-41 package offers reliable solderability per MIL-STD standards. Evaluate the surge current capability against expected transient loads to ensure the device remains within safe operating limits during peak events.

Part Context

This part belongs to the 1N4728A through 1N4761A series manufactured by Vishay Semiconductors. The series covers a broad range of Zener voltages from 3.3 V to 75 V. All devices share common mechanical characteristics including the DO-41 glass case and similar thermal profiles, allowing for standardized design approaches across different voltage requirements.

Replacement Considerations

Direct substitutes include parts from other manufacturers adhering to the same JEDEC outline, such as onsemi 1N4737A-T50A or Nexperia 1N4737A,113. Verify that replacement components match the 7.5 V nominal voltage and DO-41 package dimensions to ensure physical compatibility.