SMV1235 Series

Hyperabrupt Junction Tuning Varactor


Please note: SMV1235-040LF is being discontinued and is not recommended for new designs. The suggested replacement is SMV1235-079LF.

SMV1235 Series includes SMV1235-079LF and SMV1235-040LF.

The SMV123x series of silicon hyperabrupt junction varactor diodes are designed for use in Voltage Controlled Oscillators (VCOs) with a low tuning voltage operation. The low resistance of these varactors makes them appropriate for high-Q resonators in wireless system VCOs to frequencies over 10 GHz. This family of varactors is characterized for capacitance and resistance over temperature.

Specifications

Package Type SC-70, SC-79, SOD-323, SOD-882, SOT-23
Vr Reverse Breakdown Voltage Ir = 10 µA (V) Min.15
Ct Total Capacitance3 Vr=1 V (pF) Typ.11.67
Ct Total Capacitance3 Vr=4 V (pF) Typ.4.99
Ct Total Capacitance3 Vr=8 V (pF) Typ.2.91
Ct Total Capacitance3 Vr=12 V (pF) Typ.2.47
Ct Total Capacitance3 Vr=20 V (pF) Typ.
Total Capacitance Ratio Min.11.6
Capacitance Ratio Range (V)1 to 3
Rs Series Resistance Max2 (Ω)0.6

Features

  • High capacitance ratio
  • Low series resistance for low phase noise
  • Packages rated MSL1, 260 °C per JEDEC J-STD-020

Product Documents