SMV1273-079LF

Hyperabrupt Junction Tuning Varactor


Please note: SMV1273-079LF is being discontinued and is not recommended for new designs.

The SMV1273-079LF is a silicon hyperabrupt junction varactor diode specifically designed for battery operation. The specified high-capacitance ratio and low-series resistance make this varactor appropriate for low phase-noise Voltage-Controlled Oscillators (VCOs) used at frequencies in wireless systems up to and above 2.5 GHz.

Applications for the SMV1273-079LF include low-noise and wideband UHF and VHF VCOs for GSM, PCS, CDMA, and analog phones. Table 1 describes the packaging and marking of the SMV1273-079LF varactor.

Specifications

Product LifecycleLast Time Buy
Package Type SC-79
Vr Reverse Breakdown Voltage Ir = 10 µA (V) Min.29
Ct Total Capacitance3 Vr=1 V (pF) Typ.20.35
Ct Total Capacitance3 Vr=4 V (pF) Typ.9.34
Ct Total Capacitance3 Vr=8 V (pF) Typ.4.8
Ct Total Capacitance3 Vr=12 V (pF) Typ.3.42
Ct Total Capacitance3 Vr=20 V (pF) Typ.
Total Capacitance Ratio Min.16.2
Capacitance Ratio Range (V)2 to 25
Rs Series Resistance Max2 (Ω)0.8

Features

  • Low-series resistance
  • High-capacitance ratio
  • Ultrasmall SC-79 package (MSL1, 260 °C per
  • JEDEC J-STD-020)

Product Documents