1N4736A-T

Overview

The Vishay 1N4736A-T is a silicon planar power Zener diode in the DO-41 (DO-204AL) through-hole package. It provides a nominal Zener voltage of 6.8 V with a standard tolerance of ±5%. The device operates at a test current of 37 mA and dissipates up to 1.3 W. Key electrical parameters include a maximum reverse leakage current of 10 µA, a dynamic resistance of 3.5 Ω, and a surge current rating of 700 mA. It supports junction temperatures up to 175 °C.

Feature Summary

• Designed for high-power stabilization and clipping applications
• Utilizes silicon planar technology for robust performance
• Features an isolated glass encapsulation in a long-form axial leaded package

Applications

• Voltage stabilization circuits
• Signal clipping applications
• General-purpose voltage regulation

Procurement Notes

Verify that the ordering suffix '-T' corresponds to the specific tape-and-reel or ammo-pack configuration required by your assembly line. Confirm the exact units per reel against the manufacturer's latest ordering information table to ensure compatibility with pick-and-place equipment specifications.

Selection Notes

Select this component when a 6.8 V reference point is needed within the 1W to 1.3W power dissipation range. Ensure the circuit design accommodates the specified 37 mA test current for accurate voltage regulation. Verify thermal management requirements to maintain the junction temperature below the 175 °C absolute maximum limit during operation.

Part Context

This part belongs to the Vishay 1N4728A to 1N4761A series of surface-mountable and through-hole Zener diodes. The series covers a wide voltage range from 3.3 V to 75 V. The 1N4736A specifically targets the mid-range voltage segment, offering a balance between low leakage current and moderate dynamic impedance suitable for general industrial electronics.

Replacement Considerations

Cross-reference with other manufacturers' 1N4736A equivalents. Verify that substitute parts match the 6.8 V nominal voltage, ±5% tolerance, and DO-41 package dimensions to ensure mechanical and electrical interchangeability without redesigning the PCB footprint.

FAQ

What is the dynamic resistance of the 1N4736A?

The dynamic resistance (ZZT) at the test current of 37 mA is typically 3.5 Ω.

What is the maximum surge current rating?

The device can withstand a surge current of 700 mA for pulses lasting 10 ms.