SKY12209-478LF Buy Now
0.9-4.0 GHz 40 W High Power Silicon PIN Diode SPDT Switch

The SKY12209-478LF is a high power handling, Single-Pole, Double-Throw (SPDT) silicon PIN diode switch with symmetrical switching paths from a single common port. The device operates over the 0.9 GHz to 4.0 GHz band. It features low insertion loss, excellent power handling, and superb linearity with low DC power consumption.

The SKY12209-478LF is well-suited for use as a high power transmit/receive and RF path 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: 40 W CW
  • Low insertion loss: 0.3 dB typical
  • High isolation: 42 dB @ 2.6 GHz
  • Controlled with positive power supply
  • Fast RF rise time: 40 ns typical
  • Small, QFN (16-pin, 4 x 4 mm) Pb-free package (MSL1, 260 °C per JEDEC J-STD-020)
Data Sheets SKY12209-478LF: 0.9-4.0 GHz 40 W High Power Silicon PIN Diode SPDT Switch SKY12209_478LF_201905D.pdf (1361 KB)
Product Brief High Power (40 to 150 Watt) SPST and SPDT PIN Diode Switches PB_HighPowerPINDiodeSwitchesPB116_13A.pdf (1075 KB)
Application Notes Driver Circuit for High-Power PIN Diode Switches Pin_Diode_Driver_203950A_AN.pdf (849 KB)
ProductName : SKY12209-478LF
Description (Absorptive/ Reflective) : SPDT (R)
Frequency (GHz) Min. : 0.9
Frequency (GHz) Max. : 4.0
Typ. IL (dB) : 0.4-0.6
Typ. Isol. (dB) : 35-46
Typ. IIP3 (dBm) : 76
Typ. IP1 dB (dBm) :
Control Logic :
Max. TX Power (W) : 40
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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