GaAs Abrupt Tuning Varactors MA46600 Series V3.00 Features ● ● ● Case Styles Highest Q Large Capacitance Variation with Voltage Custom Tailored Designs Available on Request Description The MA46600 series of microwave tuning varactors is a family of abrupt junction gallium arsenide devices featuring Q factors in excess of 8000. This series is specifically designed for broadband high Q tuning performance (up to 8000 at -4 volts and 50 MHz) from L through Ka band. Characteristics such as high reliability, low leakage and close capacitance tracking between diodes are typical of these devices. Standard capacitance matching is ± 10%, but closer matching is available upon request. All diode types are available in a wide selection of ceramic packages as well as in chip form. Applications The MA46600 series of tuning varactors can be used for both broad and narrow band tuning through Ka-band. Typical applications include solid state tuning of VCOs using transistors or Gunns as well as voltage tunable filters and amplifier circuits. The GaAs abrupt junction tuning varactors offer the highest Q of any tuning varactors and are utilized in high frequency applications where Q is premium. Specifications Subject to Change Without Notice. M/A-COM, Inc. North America: 1 Tel. (800) 366-2266 Fax (800) 618-8883 ■ Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 ■ Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 GaAs Abrupt Junction Tuning Varactors MA46600 Series V3.00 Electrical Specifications at 25°C Model Number Reverse6 Voltage (Volts) CT4 ± 10% (pF) Q @ -4 Volts (Typical) Ratio1,2 CT0/CTVB (pF) (Typical) MA46600 30 0.3 8000 1.9 MA46601 30 0.4 7500 2.1 MA46602 30 0.5 7000 2.5 MA46603 30 0.6 6500 2.8 MA46604 30 0.8 6000 3.2 MA46605 30 1.0 5700 3.4 MA46607 30 1.5 5000 3.8 MA46609 30 2.2 4000 4.0 Notes: 1. Capacitance is measured at 1 MHz on a bridge which has been balanced with shielded test holders connected in place but open circuited. 2. All GaAs tuning varactors are available in any case style shown in this bulletin as well as in chip form. When ordering, specify the desired case by adding the case designation as a suffix to the model number, i.e., MA46601-30. For example, a MA46601-30 specifies a 30 volt tuning diode in a case style 30 with a CT14 between .36 and .44 pF and a Q at -4 volts and 50 MHz ≥7500. The capacitance values and capacitance ratios are for case style 30. Other case styles or chips will have slightly different values. 3. All junctions are abrupt i.e., y = 0.50 ± .03. 4. Total capacitance ratios will vary with case choice due to differences in case capacitance (Cp). Figure 1 shows the ratio for the 30 case style. 5. Case parasitics (Cp and Ls) are given for most case styles. 6. Breakdown voltage (VB) is specified at -10 µA. Absolute Maximum Ratings at +25°C Typical Performance Curve CAPACITANCE CHANGE RATIOS FOR GaAs TUNING VARACTORS IN CASE STYLE 30 10 9 8 7 UNPACKAGED CHIP 6 CTO = 4.0pF 5 CTO/CTV (RATIO) 1,2 CTO = 2.0pF 4 CTO = 1.0pF 3 2 Parameter CTO = 0.5pF Temperature: Operating -65°C to + 175°C Storage -65°C to + 200°C Voltage 1 1 2 See Breakdown Voltage Power Dissipation Cj < 1.0 pF max. @ 50 mW (derate linearly to zero at 200°C) Cj ≥ 1.0 pF min. @ 100 mW 3 4 6 8 10 20 30 VOLTAGE (VOLTS) Environmental Ratings Method Levels Temperature, Storage 1031 See Maximum Ratings Temperature, Cycling 1051 5 cycles, -65 to + 150 C Shock 2016 500 g’s Vibration 2056 15 g’s Constant Acceleration 2006 20,000 g’s Moisture Resistance 10 days 1021 Specifications Subject to Change Without Notice. M/A-COM, Inc. 2 North America: Tel. (800) 366-2266 Fax (800) 618-8883 ■ Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 ■ Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 GaAs Abrupt Junction Tuning Varactors MA46600 Series V3.00 Case Styles (See appendix for complete dimensions) Specifications Subject to Change Without Notice. M/A-COM, Inc. North America: 3 Tel. (800) 366-2266 Fax (800) 618-8883 ■ Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 ■ Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020