SMV1251 Series

Hyperabrupt Junction Tuning Varactor


Please note: SMV1251-011LF is being discontinued and is not recommended for new designs.

SMV1251 Series includes SMV1251-079LF and SMV1251-040LF.

The SMV1247-SMV1255 group of silicon hyperabrupt junction varactor diodes is designed for use in Voltage Controlled Oscillators (VCOs) with a low tuning voltage operation. This group of varactors is characterized for capacitance and resistance over temperature.

Specifications

Package Type SC-70, SC-79, SOD-323, SOT-23
Vr Reverse Breakdown Voltage Ir = 10 µA (V) Min.15
Ct Total Capacitance3 Vr=1 V (pF) Typ.28.09
Ct Total Capacitance3 Vr=4 V (pF) Typ.3.95
Ct Total Capacitance3 Vr=8 V (pF) Typ.2.79
Ct Total Capacitance3 Vr=12 V (pF) Typ.
Ct Total Capacitance3 Vr=20 V (pF) Typ.
Total Capacitance Ratio Min.111
Capacitance Ratio Range (V)0.3 to 4.7
Rs Series Resistance Max2 (Ω)1.6

Features

  • High capacitance ratio: C0.3V/C4.7V = 12 typical
  • Packages rated MSL1, 260 °C per JEDEC J-STD-020

Product Documents