1N4686 BK PBFREE

Single Zener Diodes Overview

The Central Semiconductor Corp 1N4686 BK PBFREE is a silicon Zener diode designed for low-level applications requiring extremely low operating current and low leakage. It features a nominal Zener voltage of 3.9 V with a 5% tolerance, tested at 50 μA. The device dissipates up to 500 mW and operates within a junction temperature range of -65°C to +200°C. Packaged in the DO-35 axial leaded case, it exhibits a maximum reverse leakage current of 5.0 μA at 2.0 V and supports a maximum regulator current of 70.0 mA.

Single Zener Diodes Feature Summary

• Designed for applications requiring extremely low operating current (50μA) and low leakage characteristics.
• Provides stable voltage regulation with a 5% tolerance across the specified voltage range.
• Capable of handling high thermal stress with an extended junction temperature range up to +200°C.

Single Zener Diodes Applications

• Low-level voltage reference circuits
• Precision voltage regulation
• Protection against transient overvoltages

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'PBFREE' confirms lead-free plating compliance as per manufacturer standards. Confirm the 'BK' designation corresponds to bulk packaging requirements. Ensure the specific part number matches the required 3.9V nominal specification. Cross-reference the marking code C4686 for physical identification during assembly inspection.

Single Zener Diodes Selection Notes

Select this component when circuit design demands minimal quiescent current consumption alongside precise voltage clamping. The DO-35 package suits through-hole mounting constraints. Evaluate the 500mW power dissipation limit against expected thermal loads. Consider the low leakage current specifications for high-impedance signal paths where noise floor minimization is critical.

Single Zener Diodes Part Context

This device 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 identical mechanical outlines and electrical testing conditions. These components are standardized for general-purpose voltage regulation tasks in consumer and industrial electronics.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other manufacturers' 1N4686 variants meeting the same DO-35 footprint and 3.9V nominal specification. Verify that alternative sources maintain the 5% tolerance and 500mW power rating. Ensure replacement parts support the required -65°C to +200°C operating temperature range.