SKY12215-478LF Buy Now
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.


  • 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)
Data Sheets SKY12215-478LF: 0.9 to 4.0 GHz, 125 W High-Power Silicon PIN Diode SPDT Switch SKY12215_478LF_202975C.pdf (847 KB)
Application Notes Driver Circuit for High-Power PIN Diode Switches Pin_Diode_Driver_203950A_AN.pdf (849 KB)
Designer Info SKY12215-478LF: S Parameter (89 KB)
ProductName : SKY12215-478LF
Description (Absorptive/ Reflective) : SPDT (R)
Frequency (GHz) Min. : 0.9
Frequency (GHz) Max. : 4.0
Typ. IL (dB) : 0.3-0.5
Typ. Isol. (dB) : 31-43
Typ. IIP3 (dBm) : 71
Max. TX Power (W) : 125
Package : QFN 16L
Package (mm) : 4 x 4 x 1.5
Product Information:
Description: High Power PIN Diode Based
Frequency Max.: ≥2.9 GHz and < 5.9GHz
Frequency Min.: ≥400 MHz
Function: SPDT / SP2T
Package Type: DFN, QFN, MLPD, MLPQ
Power Handling: ≥50 dBm
Status: In Production
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