L8104-240

RF Diode Overview

The L8104-240 is a high-power RF PIN diode manufactured by CEL, housed in a hermetic ceramic MELF package. It features a maximum reverse voltage of 240V and a power handling capacity of 3W. The device exhibits low series resistance, specified as 750mOhm at 50mA and 100MHz, contributing to very low insertion loss and high isolation characteristics. Designed for robust performance, it supports a maximum operating temperature of +175°C and includes an extremely small reverse bias requirement.

RF Diode Feature Summary

• Hermetic ceramic MELF package construction
• High power handling capability up to 3W
• Low series resistance for efficient signal transmission
• Very low insertion loss with high isolation

RF Diode Applications

• RF switching applications
• Attenuator circuits
• Phase shifters
• High-frequency signal modulation

RF Diode Procurement Notes

Verify the specific datasheet version from CEL or authorized distributors to confirm exact electrical tolerances and thermal specifications. Ensure the ceramic MELF package compatibility matches your PCB footprint requirements. Cross-reference the 240V reverse voltage rating against your circuit's peak inverse voltage needs to prevent device failure under transient conditions.

RF Diode Selection Notes

Select this component when high power handling and hermetic sealing are required for RF environments. The 240V rating suits higher voltage switching scenarios compared to lower-rated variants like the L8101. Consider the 750mOhm series resistance impact on insertion loss for sensitive signal paths. The ceramic package offers superior reliability over plastic alternatives in harsh conditions.

RF Diode Part Context

This part belongs to CEL's L810x series of RF PIN diodes, which are designed for high-performance microwave and RF applications. The series utilizes ceramic MELF packaging to ensure environmental stability and thermal endurance. Variants within the series differ primarily in reverse voltage ratings, such as the 180V L8101 versus the 240V L8104-240, allowing designers to match voltage margins precisely.

RF Diode Replacement Considerations

The L8104A-240 is a documented variant within the same family, potentially offering updated manufacturing specifications while maintaining the 240V/3W profile. Verify pinout and thermal characteristics before substitution. Generic PIN diodes may not match the hermetic seal or specific resistance values required for critical RF performance.