Surface Mount PIN Diode for High Power Switch Applications

The SMP1302-085LF is a surface mountable, low capacitance silicon PIN diode designed as a shunt connected PIN diode for high power, high volume switch and attenuator applications from 10 MHz to beyond 6 GHz.

Maximum resistance at 100 mA is 1.5 Ω and maximum capacitance at 30 V is 0.3 pF. The combination of low junction capacitance, low parasitic inductance, low thermal resistance, and nominal 50 μm I-region width, makes the SMP1302-085LF useful in large signal switches and attenuator applications.

The device has a 3 W dissipation power rating, making it capable of handling more than 50 W Continuous Wave (CW) and 500 W peak (1 μs pulse, 1 percent duty cycle) in a shunt-connected transmit/receive (T/R) switch.


    • Low-thermal resistance: 40 °C/W
    • Suitable for 50 W Continuous Wave T/R switches
    • Low capacitance: 0.3 pF
    • Low distortion performance
    • QFN (3-pin, 2 x 2 mm) package (MSL1, 250 °C per JEDEC J-STD-020)

Images & Diagrams


    • 200
    • 0.35 Max.
    • 0.80 Typ.
    • 3 Max.
    • 1.5 Max.
    • 700