1N4118 BK

Single Zener Diodes Overview

The Central Semiconductor Corp 1N4118 BK is a silicon Zener diode from the 1N4099 series, designed for low leakage, low current, and low noise applications. It features a DO-35 case with a maximum power dissipation of 250 mW at 25°C ambient temperature. The nominal Zener voltage is 27 V, with a minimum of 25.65 V and a maximum of 28.35 V at a test current of 250 μA. Maximum reverse current is 150 μA at 20 V, and maximum Zener impedance is 0.01 Ω. The device operates within a junction temperature range of -65 to +200 °C.

Single Zener Diodes Feature Summary

• Designed for low leakage and low noise applications
• Utilizes silicon construction for stable performance
• Available in compact DO-35 axial leaded package

Single Zener Diodes Applications

• Low noise voltage reference circuits
• Precision voltage regulation
• Low current protection applications

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix 'BK' against manufacturer documentation to confirm if it denotes a standard variant or a special screening condition. Ensure compatibility with DO-35 footprint requirements. Confirm plating options such as Tin/Lead or Lead-Free if required by assembly processes. Cross-reference the marking code C4118 for visual identification during inspection.

Single Zener Diodes Selection Notes

Select this component when a 27 V nominal Zener voltage is required with strict low-noise specifications. The 250 mW power rating suits low-current designs. Consider the 5% tolerance band for precision applications. Verify that the operating environment stays within the specified -65 to +200 °C junction temperature range for reliable operation.

Single Zener Diodes Part Context

This part belongs to the Central Semiconductor 1N4099 through 1N4135 series of silicon Zener diodes. The series covers voltages from 6.8 V to 100 V, all sharing similar low-noise characteristics and 250 mW power dissipation capabilities. These devices are intended for applications requiring stable voltage references with minimal electrical noise interference.

Single Zener Diodes Replacement Considerations

Direct substitutes must match the 27 V nominal Zener voltage, 250 mW power rating, and DO-35 package. Verify equivalent low-noise density and impedance specifications. Check for compatible marking codes and thermal ratings to ensure functional interchangeability in existing circuit designs.