1N4731A_S00Z

Overview

The onsemi 1N4731A_S00Z is a silicon planar Zener diode housed in a DO-41 glass axial package. It provides voltage regulation with a nominal Zener voltage of 4.3 V and a tolerance of ±5%. The device dissipates up to 1.0 W at lead temperatures below 50°C, derating linearly above that threshold. Electrical characteristics include a maximum Zener impedance of 9 Ω at the test current of 58 mA and a leakage current not exceeding 1 µA at 1 V. The component supports an operating and storage temperature range from -65°C to +200°C.

Feature Summary

• Utilizes silicon planar technology for stable voltage regulation within the specified tolerance band.
• Features a hermetically sealed glass case (DO-41) designed for high thermal stability and robustness.
• Capable of handling non-repetitive peak reverse surge currents up to 1070 mA.

Applications

• Voltage reference circuits requiring precise potential levels.
• Clipper and clamper circuits for waveform shaping.
• Overvoltage protection stages in power supply inputs.

Procurement Notes

Verify the specific suffix _S00Z against official ordering guides to confirm reel or tape specifications. Confirm RoHS compliance status as standard variants may differ. Ensure the supplier source matches ON Semiconductor authorized distribution channels to guarantee authenticity and traceability of the semiconductor components.

Selection Notes

Select this component when a 4.3 V regulated rail is required in an axial through-hole layout. Consider the 9 Ω dynamic impedance for low-noise applications. Evaluate the 1.0 W power dissipation limit relative to ambient thermal conditions and ensure adequate heat sinking if continuous operation exceeds 50°C lead temperature.

Part Context

This part belongs to the 1N4728A through 1N4758A series of 1.0 W Zener diodes manufactured by ON Semiconductor. The series covers a wide voltage range from 3.3 V to 56 V, all sharing the same DO-41 glass package form factor and general electrical architecture defined in publication 1N4736AT/D.

Replacement Considerations

Cross-reference with other manufacturers' 1N4731A equivalents ensuring identical 4.3 V nominal voltage, ±5% tolerance, and DO-41 package compatibility. Verify matching power dissipation ratings and impedance values for circuit continuity.