1N4712 BK PBFREE

Overview

The Central Semiconductor Corp 1N4712 BK PBFREE is a silicon Zener diode designed for low-level applications requiring extremely low operating current and leakage. It features a nominal Zener voltage of 28 V with a 5% tolerance, tested at 50 μA. The device supports a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +200°C. Packaged in the DO-35 axial leaded case, it offers a maximum reverse leakage current of 0.01 μA and a maximum regulator current of 8.5 mA.

Feature Summary

• Designed for applications requiring extremely low operating current and low leakage
• Provides stable voltage regulation with 5% tolerance across the specified voltage range
• Capable of operation over an extended temperature range from -65°C to +200°C

Applications

• Low-level voltage reference circuits
• Precision voltage regulation requiring minimal bias current
• Protection against voltage transients in sensitive electronic systems

Procurement Notes

Verify that the ordering suffix PBFREE confirms lead-free plating as per manufacturer standards. Confirm the BK packaging designation matches bulk requirements. Ensure the DO-35 package style aligns with PCB layout constraints. Cross-reference the marking code C4712 for physical identification during assembly inspection.

Selection Notes

Select this component when circuit design demands minimal quiescent current consumption alongside precise voltage clamping. The 500 mW rating suits moderate power dissipation needs without requiring heat sinking. Verify that the 28 V nominal voltage fits the target regulation threshold and that the DO-35 form factor accommodates the available board space.

Part Context

This part belongs to the 1N4678 through 1N4717 series of low-level silicon Zener diodes manufactured by Central Semiconductor. The series covers a voltage range from 1.8 V to 43 V, all sharing common electrical characteristics such as 50 μA test current and 5% tolerance. These devices are standardized for general-purpose low-power voltage regulation tasks.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4712 variants meeting identical 28 V, 500 mW, and DO-35 specifications. Ensure replacement parts maintain the same 5% tolerance and low leakage characteristics to preserve circuit performance.