1N4750A_T50R

Overview

The onsemi 1N4750A_T50R is a glass-passivated junction silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 27 V with a standard tolerance of ±5%. The device operates within a power dissipation rating of 1.0 W at a lead temperature of 50°C or less, requiring a derating factor of 6.67 mW/°C above this threshold. Electrical characteristics include a maximum Zener impedance of 35 Ω and a leakage current not exceeding 5 µA at a reverse voltage of 20.6 V. The component supports an operating and storage temperature range from -65°C to +200°C.

Feature Summary

• Glass passivated die construction ensures stable electrical performance and reliability under varying environmental conditions.
• Single unidirectional configuration provides precise voltage regulation capabilities for circuit protection and reference applications.
• DO-41 axial leaded plastic package facilitates through-hole mounting and offers UL flammability classification rating 94V-0.

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement systems

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm packaging format and compliance status. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity. Cross-reference the part number with the latest datasheet revision to validate electrical parameters and marking specifications before integration into production designs.

Selection Notes

Select this component when a 27 V regulation point is required with high thermal stability. The wide operating temperature range makes it suitable for industrial environments. Verify that the circuit design accommodates the specified power dissipation limits and thermal derating requirements to maintain long-term reliability and prevent junction overheating during continuous operation.

Part Context

This device belongs to the 1N4728A through 1N4758A series of one-watt Zener diodes manufactured by onsemi. The series utilizes glass passivation technology to enhance durability. The T50R suffix typically indicates a tape and reel packaging format intended for automated surface mount or through-hole assembly processes, distinguishing it from bulk packaged variants.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4750A equivalents meeting DO-41 specifications. Verify that replacement parts match the 27 V nominal voltage, 1 W power rating, and ±5% tolerance. Ensure the alternative component maintains similar leakage current and impedance characteristics to preserve circuit performance integrity.