SMV1273-079LF Buy Now
Hyperabrupt Junction Tuning Varactor

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.


  • Low-series resistance
  • High-capacitance ratio
  • Ultrasmall SC-79 package (MSL1, 260 °C per
  • JEDEC J-STD-020)
Data Sheets SMV1273-079LF: Hyperabrupt Junction Tuning Varactor SMV1273_079LF_203018B.pdf (415 KB)
ProductName : SMV1273-079LF
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.1 : 6.2
Capacitance Ratio Range (V) : 2 to 25
Rs Series Resistance Max2 (Ω) : 0.8
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