CPH5512-TL-E

RF Diode Overview

The CPH5512-TL-E is a dual parallel PIN diode from onsemi, housed in a compact CPH5 (SC-74A/SOT-25) surface-mount package. It features two independent diodes within a single component to improve mounting efficiency. Key electrical specifications include a maximum reverse voltage of 50 V and a forward current rating of 50 mA. The device exhibits a typical interterminal capacitance of 0.23 pF at 50 V reverse bias and a typical forward series resistance of 5 Ω at 10 mA forward current and 100 MHz frequency. Maximum power dissipation is rated at 350 mW, with an operating junction temperature range up to +125 °C.

RF Diode Feature Summary

• Dual parallel configuration integrating two PIN diodes into one CPH5 package for enhanced board space utilization.
• Low interterminal capacitance characteristic suitable for high-frequency signal processing applications.
• Minimal forward series resistance providing efficient conduction characteristics.

RF Diode Applications

• VHF and UHF circuit switching
• Automatic Gain Control (AGC) systems
• RF attenuation circuits

RF Diode Procurement Notes

Verify the ordering suffix TL-E confirms the tape-and-reel shipping format containing 3,000 pieces per reel. Confirm the Pb Free designation aligns with environmental compliance requirements. Ensure the CPH5 package dimensions match the target land pattern design. Validate that the 50 V reverse voltage rating meets the peak inverse voltage demands of the specific RF application.

RF Diode Selection Notes

Select this component when a dual-diode topology is required in a minimal footprint. The low capacitance value supports operation in VHF and UHF bands where parasitic effects must be minimized. Verify that the 50 mA forward current capability satisfies the signal handling requirements. Consider the 350 mW power dissipation limit relative to the expected thermal environment during continuous operation.

RF Diode Part Context

This part belongs to the CPH5512 series of PIN diodes manufactured by onsemi. It utilizes the CPH5 composite package, also identified as SC-74A or SOT-25, which houses two distinct diode structures. The device is designed specifically for radio frequency applications requiring fast switching and low insertion loss characteristics.

RF Diode Replacement Considerations

Direct substitutes require matching the CPH5 package, 50 V reverse voltage rating, and dual parallel PIN diode configuration. Verify equivalent capacitance and series resistance values to maintain RF performance integrity in existing circuit designs.

RF Diode FAQ

What is the pinout configuration for the CPH5512?

Pins 1 and 2 are Cathodes, Pin 3 is Anode, Pin 4 is No Contact, and Pin 5 is Anode.

What is the typical interterminal capacitance value?

The typical interterminal capacitance is 0.23 pF measured at 50 V reverse voltage and 1 MHz frequency.

What is the maximum allowable junction temperature?

The maximum junction temperature is 125 °C.