1N4682 BK PBFREE

Overview

The Central Semiconductor Corp 1N4682 BK PBFREE is a silicon Zener diode designed for low-level applications requiring extremely low operating current and leakage. It operates within a junction temperature range of -65 to +200 °C with a power dissipation rating of 500 mW at 75 °C. The device features a nominal Zener voltage of 2.7 V, tested at 50 μA, with a tolerance of ±5%. Maximum reverse leakage current is specified at 1.0 μA at 1.0 V, while the maximum regulator current is 90.0 mA.

Feature Summary

• Designed for applications requiring extremely low operating current and low leakage characteristics
• Provides stable voltage regulation across a wide thermal operating range up to 200 °C
• Features a standard DO-35 axial leaded package suitable for through-hole mounting

Applications

• Low-level voltage reference circuits
• Precision voltage regulation in sensitive analog electronics
• Protection against overvoltage in low-current signal paths

Procurement Notes

Verify that the ordering suffix 'PBFREE' corresponds to lead-free plating as defined by the manufacturer's standard terms. Confirm the specific marking code C4682 on the component body matches the datasheet requirements. Ensure the procurement documentation explicitly references the 1N4682 part number to avoid confusion with adjacent series members like 1N4681 or 1N4683.

Selection Notes

Select this component when circuit design demands minimal quiescent current consumption during regulation. The 500 mW power rating allows for moderate current handling, but designers must account for derating above 75 °C ambient temperature. Verify that the 2.7 V nominal output aligns with downstream logic or biasing requirements before finalizing the bill of materials.

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 common electrical testing conditions at 50 μA test current. The 1N4682 specifically targets the lower end of this voltage spectrum, offering tight tolerance for precision applications.

Replacement Considerations

Cross-reference with other manufacturers' 1N4682 equivalents such as those from ON Semiconductor or Vishay. Ensure replacement parts maintain the same DO-35 mechanical outline and 500 mW power dissipation rating. Verify that substitute components meet the identical 5% voltage tolerance and low leakage specifications required by the original design.