Plastic Packaged Surface Mount Varactor Diodes

Plastic Packaged Surface Mount Varactor Diodes 2 Features Industry Standard Outlines: SOD 323 and SOT 23 Packages High Abrupt and Hyperabrupt Junction Designs Single, and Configurations Available for 3 Volt Battery Operated Circuits Priced for High Volume Commercial Applications Available in Tape and Reel Also Available as Chips Maximum Ratings (T A = 25 C) Forward Current: 0 ma Power Dissipation: 250 mw Junction Temperature: 25 C Storage Temperature: 55 to 50 C Operating Temperature: 55 to 25 C Description The surface mount plastic varactor diodes are designed for RF and Microwave applications in VCOs, electronically tunable filters and matching networks. Package offerings include the SOT 23 and the small footprint SOD 323 package. Alpha offers a comprehensive capability in capacitance values, package options and voltage ratings all aggressively priced for high volume commercial applications. The SMV247 00 to SMV255 00 varactors were specifically designed for battery operated applications where 3 to 5 volts is available. These varactors have capacitance ratios of greater than 2 from 0.3 to 4.7 volts. Alpha s hyperabrupt varactors are available in a wide variety of tightly specified capacitance values and high capacitance ratios. They are available as single junctions and common cathode configurations where they may be employed in a back to back orientation to reduce distortion. Alpha s abrupt junction varactors are noted for extremely high factor and are the preferred choice in applications that require low phase noise and high temperature stability. The inductance of the SOT 23 package is typically.5 nh for each junction. Employing a common cathode SOT 23 with the varactor junctions connected in parallel reduces the inductance to approximately 0.9 nh. The inductance of a varactor in the SOD 323 package is approximately.5 nh. 2 3

Electrical Characteristics (T A = 25 C) High Ratio Hyperabrupt Junction Varactors for Battery Operated Applications Breakdown Voltage, V B ( µa): 5V Min. Reverse Current, I R (2V): @ 0.3V @ 4.7V @ 0.3V @47V 4.7V Min. Typ. Max. Typ. Min. Typ. Max. Single Single R S @ 3V 200 MHz ( ) SOD 323 SOT 23 SOT 43 6.5 7.0.78.7 9.5.0 2.0 SMV247 0 SMV247 00 SMV247 004 5 7.7.5.8 6.5.8 SMV248 0 SMV248 00 SMV248 004 28 3 2.8 2.6.0 2..5 SMV249 0 SMV249 00 SMV249 003 SMV249 004 33 36 3.3 3.0.0 2.2.5 SMV250 0 SMV250 00 SMV250 004 38 42 3.8 3.4.0 2.2.3 SMV25 0 SMV25 00 SMV25 004 48 53 4.8 4.3.0 2.3.2 SMV253 0 SMV253 00 SMV253 004 58 64 5.8 5.2.0 2.3.0 SMV255 0 SMV255 00 SMV255 003 SMV255 004 2 Volt Hyperabrupt Junction Varactors Reverse Breakdown Voltage, V B ( µa): 2V Min. Reverse Current, I R (8V): @V @ 2.5V @4V @ 4V Min. Typ. Min. Max. Typ. Max. Min. Single Single 95 0 40 65 20 25 80 SMV2 00 42 50 8 27 9.0 2 50 SMV22 00 SMV22 004 7 22 8.5.5 4.0 5.5 200 SMV23 0 SMV23 00 SMV23 004 4.5 6 6.5 7.8 3.0 4.8 300 SMV24 00 SMV24 003 8.7 9.5 4.3 5.5 2.0 2.9 350 SMV25 0 SMV25 00 85 5.0 30.0 500* SMV297 00 * @ 2V, F= MHz Breakdown Voltage, V B ( µa): Reverse Current, I R (V): 2V Min. @ 0.2V @ 2V @ 6V Min. Max. Min. Max. Min. Max. Min. Single Single @2V 4 4 6.5.2.9 250 SMV299 0 SMV299 00 SMV299 004 SMV299 05 2 4

2 Volt Hyperabrupt Junction Varactors (cont.) Reverse Breakdown Voltage, V B ( µa): 2V Min. Reverse Current, I R (8V): 50 na @ 2.5V @ V @ 2.5V @ 2.5V @ 4V Min. Typ. Min. Max. Min. Max. Min. Single Single @ 4V 2 8 27.5 2.0.5 2.0 50 SMV222 0 SMV222 00 9 3.5 2.0.5 2.0 200 SMV223 0 SMV223 00 6 8.5 2.0.5 2.0 300 SMV224 00 4.2 5.6.5 2.0.5 2.0 350 SMV225 00 5 Volt Hyperabrupt Junction Varactors Reverse Breakdown Voltage, V B ( µa): 5V Min. Reverse Current, I R (2V): @V @ V @3V @ V @6V R s @ 3V 50 MHz ( ) @3V Min. Max. Min. Max. Min. Max. Max.. Min. Single Single 3.0 3.6.5.9 2.6 3.3.2 200 SMV233 0 SMV233 00 SMV233 003 SMV233 004 5.85 7.5.6 2.0 2.8 3.4 0.8 00 SMV234 0 SMV234 00 SMV234 003 SMV234 004.35 2.65.6 2.0 2.9 3.4 0.6 750 SMV235 0 SMV235 00 SMV235 004 5.50 8.50.6 2.0 3.0 3.5 0.5 700 SMV236 0 SMV236 00 SMV236 003 SMV236 004 45.00 54.0.6 2.0 3.0 3.5 0.25 500 SMV237 00 SMV237 004 22 Volt Hyperabrupt Junction Varactors Reverse Breakdown Voltage, V B ( µa): 22V Min. Reverse Current, I R (7.6 V): @V R V R (V) @V V 2 R 2 R (V) 2 Min. Max. Min. Max. Min. Min. Single Single @V R.5 2.5 3 2. 2.5 20 4.6 400 SMV206 0 SMV206 00 SMV206 004 25 3 3 4.5 5.3 20 4.8 300 SMV207 00 SMV207 004 2.5 3.3 4 0.6 0.85 20 3.0 500 SMV2022 0 SMV2022 00 SMV2022 003 SMV2022 004 4.4 5.4 4 0.9.2 20 4.2 500 SMV2023 0 SMV2023 00 SMV2023 003 SMV2023 004 8 22 4 3. 3.9 20 4.6 300 SMV227 00 45 55 4 7.3 9.2 20 5.0 200 SMV228 00 0 20 4 6 20 20 5.2 25 SMV229 00 2 5

Series Resistance Abrupt Junction Varactors Reverse Breakdown Voltage, V BR ( µa): Reverse Current, I R (V): 2V Min. @.0V @40V 4.0V Min. Max. Min. Max. Max. Single Single 7.4 20.0.0 2. 0.25 SMV493 0 36.3 4.7 20.7 25.3 0.20 SMV494 0 R s @ 3V 50 MHz ( ) SOD 323 SOT 23 SOT 43 2 6

30 Volt Abrupt Junction Varactors Reverse Breakdown Voltage, V BR ( µa): 30V Min. Reverse Current, I R (24V): 50nA Max. @4V 0 30 R S @ 4V 50 MHz ( ) Min. Max. Min. Max. Min. Single Single @4V 2.2.45 4. 0.8 3200 SMV405 00 SMV405 004.75 2. 4. 0.60 2900 SMV408 0 SMV408 00 SMV408 004 2. 2.55 4. 0.50 2800 SMV409 00 SMV409 004 2.56 3. 4.2 0.45 2600 SMV4 00 SMV4 004 3. 3.76 4.2 0.40 2500 SMV4 00 SMV4 004 3.64 4.42 4.2 0.35 2400 SMV43 00 SMV43 004 4.36 5.30 4.2 0.30 2200 SMV44 00 SMV44 004 5.7 6.29 4.3 0.27 20 SMV45 00 SMV45 004 6.25 7.6 4.3 0.24 2000 SMV46 00 SMV46 004 7.5 9.5 4.3 0.22 800 SMV47 00 SMV47 004 9.3.3 4.4 0.20 600 SMV49 00.93 3.33 4.4 0.9 400 SMV420 00 3.63 6.63 4.4 0.8 200 SMV42 00 6.33 9.93 4.4 0.8 00 SMV422 00 29.83 36.43 4.5 0.6 600 SMV426 00. Capitance measured at MHz. 2. For multiple junction packages specifications apply to single junction. Unpackaged chips are available for purchase by replacing the dash number with 000. For example, to purchase the chip from the SMV408 00, the part number becomes SMV408 000. The package capacitance of 0.3 pf should be subtracted from the specifications to indicate junction capacitance. Chips available through distribution: SMV22 000 SMV23 000 SMV24 000 SMV233 000 SMV236 000 2 7

Typical Capacitance Curves 0.0 00 Capacitance.0.0 0. 0 2 4 6 8 SMV237 SMV236 SMV235 SMV234 SMV233 Capacitance 0 SMV244 SMV205 0 2 4 6 8 2 4 6 8 20 SMV229 SMV228 SMV207 SMV227 SMV206 0 0 SMV493 Capacitance SMV494 Capacitance SMV422 SMV42 SMV49 SMV47 SMV45 SMV43 0..0.0 SMV4 SMV408 0 2 4 6 8 2 4 6 8 20 00 0.0 SMV255 Capacitance 0 0 2 4 6 8 SMV2 SMV22 SMV23 SMV24 SMV25 Capacitance.0 SMV249.0 0. SMV253 SMV25 SMV250 SMV248 SMV247 2 8

Outline Dimensions SOT 23 SOD 323 0.8 (2.70mm) 0.090 (2.30mm) 0.053 (.35mm) 0.045 (.5mm) 0.06 (0.40mm) 0.0 (0.25mm) 0.07 (.80mm) 0.063 (.60mm) 0.008 (0.20mm) 0.006 (0.5mm) TYP. 0.050 (.25mm) MAX. 0.0 (0.25mm) MIN. 0.004 (0.mm) MAX. SOT 43 2 9