2.3 to 4.2 GHz 120 W High-Power SPDT Switch

The SKY12248-492LF is a compact single-pole, double-throw (SPDT) fail-safe switch for TDD 4G and 5G applications. It can be tuned to specific RF bands within the range of 2.3 to 4.2 GHz by modifying select external SMT components.

This device features high-power handling at hot, low TX and RX insertion loss, and high isolation with low DC power consumption.

The device requires minimal external components, enabling a smaller PCB footprint.

The device is provided in a 5 × 5 mm, 20-pin Quad Flat No-Lead (QFN) package.

Pin-to-pin compatible with SKY12255 (160 W fail safe switch).


    • Compact, integrated high-power switch
    • Small PCB footprint with minimal external components
    • 120 W average power handling at 120 °C case temperature
    • Low TX/RX insertion loss
    • High TX to RX isolation
    • Low DC power consumption
    • Small QFN (20-pin, 5 × 5 mm) Pb-free package (MSL3, 260 °C per JEDEC J-STD-020)

Images & Diagrams


    • Description (Absorptive/ Reflective)
    • SPDT (R)
    • Frequency (GHz) Min.
    • 2.3
    • Frequency (GHz) Max.
    • 4.2
    • Typ. Isol. (dB)
    • TBD
    • Typ. IL (dB)
    • TBD
    • Typ. IIP3 (dBm)
    • TBD
    • Typ. IP1 dB (dBm)
    • Max. TX Power (W)
    • TBD
    • Control Logic
    • Package
    • QFN, 20L
    • Package (mm)
    • 5 x 5 x 1.5

360 Degree View

Product Media

  • 28 April 2021
  • Skyworks Discusses High-Power, Fail-Safe Cellular Infrastructure Switches with Microwave Journal

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