MA46600 Series GaAs Abrupt Junction Tuning Varactors 30 276 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 weil as in chip form. The series is available in minimum breakdown voltage ranges of 30 volts and 45 volts. Features @ HIGHEST Q @ LARGE CAPACITANCE VARIATION WITH VOLTAGE (ABRUPT JUNCTION) @ CUSTOM TAILORED DESIGNS AVAILABLE ON REQUEST 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, Gunns or IMPATTs, 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. M/A-COM, Inc. | 43 South Ave, Burlington, MA 01803 a 800-366-2266 171 MA46600 Series GaAs Tuning Varactors Specifications @ Ty = 25C Voltage Ratio'3 Model Breakdown Ctq? Q@ -4 Volts? Cio/CiVB (pF) Number (Volts) + 10% (pF) Minimum (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 MA46606 30 1.2 5300 3.6 MA46607 30 1.5 5000 3.8 MA46608 30 1.8 4500 3.9 MA46609 30 2.2 4000 4.0 MA46610 45 0.5 6000 2.7 MA46611 45 0.6 5500 3.1 MA46612 45 0.8 5000 3.6 MA46613 45 1.0 4600 3.9 MA46614 45 1.2 4300 4.2 MA46615 45 1.5 4000 4.5 MA46616 45 1.8 3800 4.7 MA46617 45 2.2 3600 49 MA46618 45 2.7 3300 5.1 MA46619 45 3.3 3000 5.3 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. Diode Q is measured by the DeLoach technique and extrapolated to 4 volts and 50 MHz. 3. All GaAs tuning varactors are available in any case styie shown in this bulletin as welt as in chip form. When ordering, specify the desired case by adding the case designation as a suffix to the type number. For exam- ple, a MA46601-30 specifies a 30 volt tuning diode in a case style 30 with a Cg 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. MAXIMUM RATINGS Temperature: Operating -65C to +200C Storage -65C to +200C Voltage Breakdown Voltage Power Dissipation (derate linearly to zero at 200C) Cj = 1.0 pF min. @100mW ENVIRONMENTAL RATINGS Method Levels Cj = 1.0 pF max. @ 50mW - on No where Co Gj) (+Va)y . All junctions are abrupti.e., y = 0.50 + .09 . Total capacitance ratios will vary with case choice due to ditferances in case capacitance {Cp). Figure 1 shows the ratio for the 30 case style. . Case parasitics (Cp and Lg) are given for most case styles. Breakdown voltage (Vp) is measured at 10 pA. anno Crolry {RATIO) > Typical Performance Curve Temperature, Storage 1031 See Maximum Ratings Temperature, Operating See Maximum Ratings = 0.5pF Temperature, Cycling 1051 5 cycles, -65 to +150 C Shock 2016 500 gs 1 Vibration 2056 15 g's 1 2.3.4 6 810 20 3040 Constant Acceleration 2006 20,000 g's VOLTAGE (VOLTS) Moisture Resistance 1021 10 days FIGURE 1. Capacitance Change Ratios for GaAs Tuning Varactors in Case Style 30 M/A-COM, Inc. a 43 South Ave, Burlington, MA 01803 a 800-366-2266 172 MA46600 Series GaAs Tuning Varactors Case Styles dt 30 92 _-=] 31 94 eT 95 36 =F 96 91 97 M/A-COM, Inc. a 43 South Ave, Burlington, MA 01803 a 800-366-2266 173 MA46600 Series GaAs Tuning Varactors Case Styles (Contd) 7 = 168 18 a, Eo _f 1, 120 186 ee ll TL 276 138 277 M/A-COM, Inc. a 43 South Ave, Burlington, MA 01803 a 800-366-2266 174