CHAlIpha Silicon Abrupt Varactor Diodes Features @ Low Series Resistance High Q Extensive Selection of Capacitance Values @ Available in a Wide Range of Package Outlines and in Die Form Description The silicon abrupt junction varactor diode changes capacitance as a function of applied reverse bias voltage, following the square root law (gamma ~ 0.5). While the capacitance change is slower in comparison to an equivalent hyperabrupt diode, the diode Q is higher which allows for a relatively higher frequency application. The simplicity of the wafer process allows the characteristics of an abrupt silicon varactor diode to be highly reproducible. A cross reference table to surface mountable plastic packages and a cross reference table with previous parts are shown. CVH2030 Series Maximum Ratings Reverse Voltage, Vp: Forward Current, Ir: Power Dissipation at 25C: Operating Temperature: Storage Temperature: 30V 100 mA 250 mW 55 to 150C 65 to 200C ALPHA INDUSTRIES, INC. * 20 SYLVAN ROAD. 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CvH2030-23 c e E CVH2030-22 s g E CVH2030-21 oot CVH2030-05 5 E CVH2030-20 CVH2030-04 w L o CVH2030-03 a. L CVH2030-19 oO CVH2030-02 O CVH2030-01 | 0.1 LL I 1 | 1 | L I L | 1 1 | | L { L | L | i 0 5 10 15 20 25 30 0 5 10 15 20 25 30 Reverse Bias Voltage (Volts) Reverse Bias Voltage (Volts) Capacitance vs. Reverse Voltage Capacitance vs. Reverse Voitage CVH2030-07 to CVH2030-11 CVH203025 to CVH203029 10.0, c | CVH2030-11 ~ 2 ] cvH2030~10 3 2 1.05 CVH2030-09 c E CVH2030-08 9 c CVH2030-07 py gf 8 oO r Qa oO L oO CVH2030-29 1 CVH2030-28 CVH2030-27 oiLat.1tit ti. : GvH2030-25 0 5 10 15 20 2 30 0 5 10 15 20 25 30 Reverse Bias Voltage (Volts) Reverse Bias Voltage (Volts) Capacitance vs. Reverse Voltage Capacitance vs. Reverse Voltage CVH2030-13 to CVH2030-17 100 - | ew | 2 @ 10 Qo = 5 | 3 r CVH2030-17 os +F CVH2030-16 oO CVH2030-15 r CVH2030-14 CVH2030-13 j pte fa |. | i 0 5 10 15 20 25 30 Reverse Bias Voltage (Volts) Capacitance vs. Reverse Voltage ALPHA INDUSTRIES, INC. 20 SYLVAN ROAD, WOBURN, MA 01801 TEL: (617) 895-5150 * FAX: (617) 824-4579 4-11Silicon Abrupt Varactor Diodes CVH2030 Series Package Outlines The varactor diodes in this series are available as dice and in a variety of package outlines. (Consult factory for availability.) The packages are designed to facilitate the handling of devices and circuit placement. However, the package may also influence the devices performance. Refer to the Outline Drawing section for catalog package outlines, their characteristics, and their effect on the electrical parameters of the diode. Surface Mountable Packages for High Volume Commercial Applications Many of the abrupt varactor diodes listed here are available in low cost surface mountable plastic packages. Refer to the Surface Mountable Varactor Diodes in Plastic Packages section for a list of diode parts, packages and their characteristics. Mathematical Model Refer to the Application Notes section for a mathematic model of a varactor diode. Ordering Information To order an unpackaged die, simply identify the desired die by the part numbers as listed in the table of Electrical Specifications. To order a packaged diode, simply append the package part number to the die part number. For example, CVH2030-14-247-001 represents the varactor diode formed by assembling CVH2030-14 die in a 247-001 package outline. Abrupt Varactor Diodes for High Reliability Applications Please refer to the Reliability section for recommended quality assurance and inspection sequences for varactor diodes. This section also covers package outlines available for high reliability applications and simplified ordering instructions. The following table summarizes the surface mountable plastic package equivalents for the Silicon Abrupt diode series: Previous Part Numbers Chip Glass Ceramic SOT Part Number 099-001 023-001 247-001 Equivalents CVH203008 DVH6730-08 DVH6731-08 DVH3821-08 SMV1400-08 CVH2030-09 DVH6730-09 DVH6731-09 DVH3821-09 SMV 1400-09 CVH2030-10 DVH6730-10 DVH673110 DVH3821-10 SMV 1400-10 CVH203011 DVH6730-11 DVH6731--11 DVH3821-11 SMV1400-11 CVH2030-12 DVH6730-12 DVH6731-12 DVH3821-12 SMV 1400-12 CVH2030-13 DVH6730-13 DVH6731-13 DVH3821-13 SMV1400~13 CVH2030-14 DVH6730-14 DVH673114 DVH3821-14 SMV 1400-14 CVH2030-15 DVH6730-15 DVH6731-15 DVH3821-15 SMV1400-15 CVH2030-16 DVH6730-16 DVH6731-16 DVH3821-16 SMV 1400-16 CVH2030-17 DVH6730-17 DVH6731-17 DVH3821-17 SMV 1400-17 CVH2030-18 DVH6730-18 DVH6731-18 DVH3821-18 SMV 1400-18 CVH2030-19 DVH6730-19 DVH6731-19 DVH3821~19 SMV1400-19 CVH2030-20 DVH6730-20 DVH6731~20 DVH3821-20 SMV 1400-20 CVH2030-21 DVH6730-21 DVH6731-21 DVH3821--21 SMV1400-21 CVH2030-22 DVH6730-22 DVH673122 DVH3821-22 SMV 1400-22 4-12 ALPHA INDUSTRIES, INC. + 20 SYLVAN ROAD, WOBURN, MA 01801 TEL (617) 935-5150 * FAX: (617) 824-4579