0.1 to 3.8 GHz SPDT High-Power Antenna Tuning Switch in a QFN Package

The SKY19243-686LF is a Quad Flat No-Lead (QFN) single-pole, double-throw (SPDT) switch designed for antenna tuning applications that require very low RON and COFF. Switching is controlled by an integrated GPIO interface with two control pins. Depending on the logic voltage level applied to the control pins, the antenna port can be either connected to one of the two switched RF outputs or to both switch outputs simultaneously.

No external DC blocking capacitors are required as long as no DC voltage is applied on any RF path.

The SKY19243-686LF is provided in a compact 10-pin, 1.5 x 1.1 x 0.5 mm maximum QFN that meets requirements for board-level assembly.


  • Broadband frequency range: 0.1 to 3.8 GHz
  • Vpeak: 42 V
  • RON: 0.8 Ω
  • COFF: 195 fF
  • Control logic: GPIO
  • Small QFN (10-pin, 1.5 x 1.1 x 0.5 mm maximum) package (MSL1, 260 °C per JEDEC J-STD-020)
Product Summary SKY19243-686LF: 0.1 to 3.8 GHz SPDT (SP2T) GPIO Antenna Tuning Switch SKY19243_686LF_204011B_PS.pdf (181 KB)
Application Notes Why Vpeak is the Most Critical Aperture Tuner Parameter Why_Vpeak_is_the_Most_Critical_Aperture_Tuner_Parameter_204666C_AN.pdf (199 KB)
Application Notes 为什么 VPEAK 是孔径调谐器最关键的参数
(Why Vpeak is the Most Critical Aperture Tuner Parameter )
Why_Vpeak_is_the_Most_Critical_Aperture_Tuner_Parameter_SCH.pdf (524 KB)
Brochure Mobile Antenna Solutions Mobile_Antenna_Solutions_brochure.aspx (0 KB)
ProductName : SKY19243-686LF
Description (Absorptive/ Reflective) : SPDT
Frequency (GHz) Min. : 0.1
Frequency (GHz) Max. : 3.8
RON (Ω) : 0.8
COFF (fF) : 195
Vpk (V) : 42
Control Logic : GPIO
Package : QFN 10L
Package (mm) : 1.5 x 1.1 x 0.5
Product Information:
Description: Antenna Tuning Switches
Description: High Linearity
Description: Low Insertion Loss
Frequency Max.: ≥2.9 GHz and < 5.9GHz
Frequency Min.: ≥100 MHz and <200 MHz
Function: SPDT / SP2T
Package Type: DFN, QFN, MLPD, MLPQ
Status: In Production
Status: New
For world-class customer service and assistance finding the Skyworks product to fit your specific design needs, please submit your request, or contact us by phone.
USA: 781-376-3000
Asia: +886 2 2322 0200
Europe: +33(0) 1 43548540