2.4 to 2.5 GHz SP3T Switch

The SKYA21039 is a single-pole, triple-throw (SP3T) antenna switch that operates in the 2.4 to 2.5 GHz frequency range. Switching between the antenna (RFC signal) and the RF1, RF2, and RF3 ports is accomplished with two control voltages (V1 and V2).

The low loss, high isolation, high linearity, small size, and low cost make this switch ideal for all WLAN and Bluetooth systems operating in the 2.4 to 2.5 GHz band.

The SKYA21039 has integrated DC blocking capacitors, so external DC blocking capacitors are not required.

The SKYA21039 is manufactured in a compact, 1.1 x 1.1 x 0.5 mm, 8-pin Micro Leadframe (MLP) package.


Product LifecycleIn Production
Description (Absorptive/ Reflective)SP3T
Frequency (GHz) Min.2.4
Frequency (GHz) Max.2.5
Typ. IL (dB)0.75
Typ. Isol. (dB)35
Typ. IIP3 (dBm)46
Typ. IP1 dB (dBm)29
Control Logic
PackageMLP, 8L
Package (mm)1.1 x 1.1 x 0.5


  • AEC-Q100 grade 2 qualified
  • Fast switching speed for Wi-Fi/BT applications: 300 ns typical
  • Positive low voltage control: 0/1.8 to 3.6 V
  • 1.8 V and 3.3 V logic compatibility
  • Wide 3 to 5 V supply voltage range
  • Integrated DC blocking capacitors
  • Miniature ultra-thin MLP (8-pin, 1.1 x 1.1 x 0.5 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

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