1N5348B

Overview

The onsemi 1N5348B is a single-channel silicon voltage regulator diode from the 1N53 Series, featuring a nominal Zener voltage of 11 V with a ±5% tolerance. It operates in an axial lead DO-201AE (Surmetic 40) package designed for through-hole mounting. The device supports a maximum steady-state power dissipation of 5 W and withstands peak forward surge currents up to 180 W at 8.3 ms. Electrical characteristics include a test current of 125 mA, a maximum Zener impedance of 2.5 Ω, and a reverse leakage current of 5 μA at 8.4 V. It functions within a temperature range of -65°C to +200°C.

Feature Summary

• Utilizes silicon-oxide passivated junction technology for superior operating characteristics and environmental protection.
• Features a void-free, transfer-molded thermosetting plastic case that provides corrosion resistance and strain relief.
• Offers high surge capability rated at up to 180 W for 8.3 ms pulses.
• Includes built-in strain relief and low inductance design suitable for various mounting positions.

Applications

• Voltage regulation in electronic circuits
• Overvoltage protection applications
• Reference voltage generation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm packaging details. The 'G' suffix indicates availability in Pb-Free packages. Confirm whether the required unit quantity corresponds to box or tape and reel specifications. Ensure compliance with RoHS directives if applicable. Cross-reference the exact part number with official distributor catalogs to validate current availability status and technical datasheet revisions before finalizing procurement orders.

Selection Notes

Select this component when a stable 11 V reference is required with a 5 W power handling capacity. The ±5% tolerance suits general-purpose regulation tasks. Consider the thermal resistance characteristics and derating requirements above 25°C for continuous operation. Verify that the package dimensions fit the target PCB layout. Evaluate the surge rating against potential transient voltage events in the application environment.

Part Context

This device belongs to the 1N53 Series of 5 Watt Zener Voltage Regulators produced by onsemi. The series covers a wide Zener voltage range from 3.3 V to 200 V. All devices in this family share common mechanical features, including the Surmetic 40 axial lead package and silicon-oxide passivation technology. The 1N5348B specifically addresses the 11 V segment of this comprehensive lineup.

Replacement Considerations

Cross-reference with other manufacturers offering equivalent 11 V, 5 W Zener diodes in the DO-201AE package. Verify electrical parameters such as Zener impedance, leakage current, and power dissipation limits match the original design requirements. Ensure mechanical compatibility regarding lead spacing and body dimensions for direct replacement.