4259-63

RF Switch ICs Green 6 lead SC70

pSemi 4259-63 – UltraCMOS® RF SPDT Switch, 10MHz-3GHz, 1.8-3.3V

This pSemi 4259-63 RF Switch IC delivers high-performance signal routing for demanding RF applications. Engineered with UltraCMOS® technology, it provides exceptional linearity and low insertion loss in a compact SC-70-6 package. Ideal for space-constrained designs requiring reliable switching between 10MHz and 3GHz frequencies.

Key Features

Frequency Range: 10MHz to 3GHz operation
Low Insertion Loss: 0.5dB typical @ 2GHz
High Isolation: 20dB minimum
Voltage Supply: Wide 1.8V to 3.3V range
Power Handling: 29dBm P1dB, 55dBm IIP3
Topology: Reflective SPDT (Single Pole Double Throw)
Temperature Range: -40°C to +85°C industrial rating

Technical Details
This general-purpose RF switch features a 50Ω impedance match and reflective SPDT architecture for flexible signal path control. The SC-70-6 (SOT-363) surface-mount package enables high-density PCB layouts. Single/Dual Line Control simplifies integration, while UltraCMOS® technology ensures robust performance with low distortion across the full frequency spectrum. Tested at 2GHz with guaranteed isolation and insertion loss specifications.

Typical Applications

Wireless communication systems (4G/5G, IoT)
Test & measurement equipment
Portable RF devices and wearables
Antenna diversity switching
Industrial automation controls

About pSemi
pSemi (formerly Peregrine Semiconductor) is a Murata company specializing in high-performance RF solutions. With over 30 years of innovation, they pioneered UltraCMOS® technology – a silicon-on-sapphire process that combines the integration benefits of CMOS with the high-frequency capabilities of GaAs.
Renowned for reliability in mission-critical applications, pSemi components serve aerospace, defense, and telecommunications industries worldwide. Their RF switches are characterized by exceptional linearity, ESD robustness, and low power consumption, making them preferred solutions for next-generation wireless systems.

About RF Switch ICs
RF switches are fundamental components in wireless systems, directing high-frequency signals between antennas, filters, amplifiers, and transceivers. Their performance directly impacts signal integrity, system efficiency, and data throughput in modern communication devices.
SPDT (Single Pole Double Throw) switches like the pSemi 4259-63 provide two-path routing flexibility in minimal footprint packages. Critical specifications include isolation (signal leakage prevention), insertion loss (signal strength preservation), and power handling (distortion avoidance). Advanced RF switches enable frequency band switching, transmit/receive toggling, and signal chain reconfiguration in 5G, IoT, and automotive radar systems.

Packaging Options
Available in industry-standard formats for automated assembly: Tape & Reel (TR), Cut Tape (CT), and Digi-Reel®. Specify your preferred option when ordering.

Frequently Asked Questions
Question: What control logic does this RF switch use?
Answer: It supports both single and dual positive voltage control lines (1.8-3.3V compatible) for flexible integration.

Question: Is this suitable for 2.4GHz Wi-Fi applications?
Answer: Yes, with 0.5dB insertion loss at 2GHz, it’s ideal for 2.4GHz ISM band systems including Wi-Fi and Bluetooth.

Question: Can it handle high-power