1N4738A_S00Z

Overview

The onsemi 1N4738A_S00Z is a single Zener diode with an 8.2 V nominal voltage and ±5% tolerance. It features a maximum power dissipation of 1 W and operates in the DO-41 (DO-204AL) through-hole package. Key electrical parameters include a maximum reverse leakage current of 10 µA at 6 V, a Zener impedance of 4.5 Ohms, and a test current of 31 mA. The device supports a junction temperature range from -65°C to +200°C.

Feature Summary

• Provides stable voltage regulation at 8.2 V with high precision tolerance
• Designed for robust thermal performance with extended junction temperature limits
• Utilizes standard through-hole mounting for reliable circuit integration

Applications

• Voltage reference circuits requiring precise 8.2 V levels
• Overvoltage protection in power supply inputs
• Clamping applications in signal conditioning paths

Procurement Notes

Verify component authenticity against official onsemi documentation. Confirm package integrity and marking codes match DO-41 specifications. Ensure storage conditions comply with moisture sensitivity levels prior to assembly. Cross-reference datasheet revisions for any parameter updates.

Selection Notes

Select this component when a 1 W through-hole Zener diode with tight voltage tolerance is required. Consider the 4.5 Ohm impedance for dynamic regulation needs. Verify that the 10 µA leakage current meets system standby requirements. Ensure PCB layout accommodates DO-41 lead spacing.

Part Context

This part belongs to the standard 1N47xx series of axial leaded Zener diodes. It serves as a legacy replacement for older designs using generic 1N4738A specifications. The S00Z suffix typically denotes specific packaging or tape-and-reel configurations within the onsemi portfolio.

Replacement Considerations

Direct substitutes include 1N4738A from other manufacturers such as Micro Commercial Components or Diodes Incorporated. Verify pinout compatibility and thermal resistance values before substitution.