SMP1302 Series

Switch and Attenuator Plastic Packaged PIN Diodes

Please note: SMP1302-001LF and SMP1302-074LF are being discontinued and are not recommended for new designs.

SMP1302 Series includes SMP1302-078LF, SMP1302-040LF, SMP1302-003LF, SMP1302-011LF and SMP1302-079LF.

The SMP1302 series of plastic packaged, surface mountable, low capacitance (0.3 pF) silicon PIN diodes is designed for highvolume switch and attenuator applications from 10 MHz to beyond 2 GHz.

These diodes are designed for use in low- distortion PI and TEE attenuators with low drive current (maximum resistance at 1 mA is 10 Ω) commonly used in TV distribution and cellular base station applications. The nominal 50 μm I region width, combined with a maximum resistance of 3 Ω at 10 mA, makes these diodes useful in large signal switch applications.

The SMP1302 series provides single and dual diodes in a selection of plastic packages including SOT-23, SOD-323, small footprint SC-79, an ultralow inductance (0.2 nH) SOT-143 (SMP1302-017), and miniature SC-70.

A four-diode array is available in an SOT-5 package (SMP1302- 027) designed for insertion in the commonly used four-diode PI attenuator circuits.


Min. VB IR = 10 µA (V)200
CT VR = 30 V (pF)0.30 Max.
VF IF = 10 mA (V)0.80 Typ.
RS IF = 1 mA F = 100 MHz (Ω)20 Max.
RS IF = 10 mA F = 100 MHz (Ω)3 Max.
RS IF = 100 mA F = 100 MHz (Ω)1.5 Max.
Typical Carrier Lifetime IF = 10 mA (ns)700


  • Designed for base station and handset applications
  • Low-distortion design
  • Available in tape and reel packaging
  • Packages rated MSL1 @ 260 °C per JEDEC J-STD-020

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