1N4757A-TR

Overview

The Vishay 1N4757A-TR is a silicon planar power Zener diode in the DO-204AL (DO-41) axial through-hole package. It provides a nominal Zener voltage of 51 V with a standard tolerance of ±5%. The device dissipates up to 1.3 W at ambient temperature and operates within a junction temperature range of -65 °C to +175 °C. Electrical characteristics include a maximum dynamic impedance of 95 Ω, a reverse leakage current of 5 µA at 38.8 V, and a forward voltage of 1.2 V at 200 mA.

Feature Summary

• Designed for high-power stabilization and clipping applications utilizing silicon planar technology
• Features a robust DO-41 axial leaded package suitable for through-hole mounting
• Complies with RoHS standards and maintains a moisture sensitivity level of 1

Applications

• Voltage stabilization circuits
• Signal clipping circuits

Procurement Notes

Verify that the ordering code matches the specific suffix required for the desired packaging format, such as TR for taped reels or TAP for ammopacks. Confirm compliance requirements against the latest Vishay material categorization documentation. Ensure thermal management strategies account for the specified power dissipation limits relative to ambient conditions.

Selection Notes

Select this component when a precise 51 V reference is needed in a high-power environment. The DO-41 package supports significant power handling compared to smaller surface-mount alternatives. Verify that the circuit design accommodates the specified surge current and dynamic impedance values under expected operating loads.

Part Context

This part belongs to the Vishay 1N4728A through 1N4761A series of single Zener diodes. The series covers a broad voltage range from 3.3 V to 75 V, all sharing the same physical package dimensions and general thermal characteristics. The 1N4757A specifically targets the mid-range voltage segment of this standardized product line.

Replacement Considerations

Cross-reference with other manufacturers' 1N4757A equivalents. Verify that substitute parts match the 51 V nominal voltage, 1.3 W power rating, and DO-41 package footprint to ensure mechanical and electrical compatibility.