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MA4ST555-120 MACOM Technology Solutions
RF Varactor Tuning Diode
MFG Part Number: MA4ST555-120
Single Diode Configuration: The MA4ST550 family of high Q Silicon Hyperabrupt Tuning Varactors is available in a series of low parasitic capacitance microwave packages or in chip form. The MA4ST550 series of diodes is available with junction capacitances of approximately 0.8 pF to 8.2 pF at -4 volts. These diodes have capacitance change ratios as high as 7:1.|Applications|The MA4ST550 series is appropriate for use in VCOs with frequencies within the range of approximately 1-14 GHz where a large capacitance change is required. These diodes are suited for VCOs in missile seekers, telecommunication systems and electronic warfare systems with critical post tuning drift specifications.
Key AttributesValue
Diode ConfigurationSingle Diode
Quality Factor, Q550
Total Capacitance, CT1.98 pF
Capacitance Ratio CVlow/CVhigh4
Vbr (Abs. MAX. Reverse Voltage)22 VDC
Package TypeODS-120
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This product is available in the following countries:
  • Global; Americas and Europe only for optical and SDI-Video products