0.9 to 4.0 GHz, 125 W High-Power Silicon PIN Diode SPDT Switch

The SKY12215-478LF is a high-power handling, Single-Pole, Double-Throw (SPDT) silicon PIN diode switch. The device operates over the 900 MHz to 4 GHz band. It features low insertion loss, excellent power handling, and superb linearity with low DC power consumption.

The SKY12215-478LF is well-suited for use as a high power transmit/receive switch in a variety of telecommunication systems such as WiMAX, TD-SCDMA, or LTE base stations.

The device is provided in a 4 x 4 mm, 16-pin Quad Flat No-Lead (QFN) package.


Product LifecycleIn Production
Description (Absorptive/ Reflective)SPDT (R)
Replacement Part SKY12245-492LF
Frequency (GHz) Min.0.9
Frequency (GHz) Max.4.0
Typ. Isol. (dB)31-43
Typ. IL (dB)0.3-0.5
Typ. IIP3 (dBm)71
Typ. IP1 dB (dBm)
Max. TX Power (W)125
Control Logic
PackageQFN, 16L
Package (mm)4 x 4 x 1.5


  • High-power handling: 125 W CW, 500 W peak
  • Low insertion loss: 0.4 dB typical
  • High antenna to receive isolation: 43 dB @ 2.6 GHz typical
  • Controlled with positive power supply
  • Bias driver circuit available on request
  • Small, QFN (16-pin, 4 x 4 mm) Pb-free package (MSL1, 260 °C per JEDEC J-STD-020)

Product Documents