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Plastic Packaged Surface Mount Varactor Diodes
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Features
Industry Standard Outlines: SOD-323 and SOT-23 Packages High "Q" Abrupt and Hyperabrupt Junction Designs Single, Common Anode and Common Cathode 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 (TA = 25C)
Forward Current: Power Dissipation: Junction Temperature: Storage Temperature: Operating Temperature: 100 mA 250 mW 125C -55 to 150C -55 to 125C
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 SMV1247-001 to SMV1255-001 varactors were specifically designed for battery operated applications where 3 to 5 volts is available. These varactors have capacitance ratios of greater than 12 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 Q 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 1.5 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 1.5 nH.
Alpha Industries * [617] 935 5150 * Fax [617] 824 4579 * E-mail sales@alphaind.com * Visit our web site: www.alphaind.com
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Plastic Packaged Surface Mount Varactor Diodes
Electrical Characteristics (TA = 25C)
High Ratio Hyperabrupt Junction Varactors for Battery Operated Applications
Breakdown Voltage, VB (10 A): Reverse Current, IR (12V):
CT @ 0.3V CT @ 4.7V 4 7V (Ratio) Typ. .7 1.5 2.6 3.0 3.4 4.3 5.2 Min. 9.5 10.8 11.0 11.0 11.0 11.0 11.0 Typ. 10.0 16.5 12.1 12.2 12.2 12.3 12.3 RS @ 3V 200 MHz 00 (W)
15V Min. 50 nA Max.
CT @ 0.3V (pF)
CT @ 4.7V (pF)
SOD-323 Single SMV1247-011 SMV1248-011 SMV1249-011 SMV1250-011 SMV1251-011 SMV1253-011 SMV1255-011 Single SMV1247-001 SMV1248-001 SMV1249-001 SMV1250-001 SMV1251-001 SMV1253-001 SMV1255-001 Common Anode
SOT-23 Common Cathode SMV1247-004 SMV1248-004 SMV1249-003 SMV1249-004 SMV1250-004 SMV1251-004 SMV1253-004 SMV1255-003 SMV1255-004 Low Inductance
SOT-143 Unconnected Pair
Min. 6.5 15 28 33 38 48 58
Typ. 7.0 17 31 36 42 53 64
Max. .78 1.7 2.8 3.3 3.8 4.8 5.8
Max. 2.0 1.8 1.5 1.5 1.3 1.2 1.0
12 Volt Hyperabrupt Junction Varactors
Reverse Breakdown Voltage, VB (10 A): Reverse Current, IR (8V): 12V Min. 50 nA Max.
CT @ 1V (pF) Min. 95 42 17 14.5 8.7 85 Typ. 100 50 22 16 9.5 -
CT @ 2.5V (pF) Min. 40 18 8.5 6.5 4.3 - Max. 65 27 10.5 7.8 5.5 - Typ. 20 9.0 4.0 3.0 2.0 15.0
CT @ 4V (pF) Max. 25 12 5.5 4.8 2.9 30.0
Q @ 4V 50 MHz Min. 80 150 200 300 350 500*
SOD-323 Single Single SMV1211-001 SMV1212-001 SMV1213-011 SMV1213-001 SMV1214-001 SMV1215-011 SMV1215-001 SMV1297-001 SMV1214-003 Common Anode
SOT-23 Common Cathode Low Inductance
SOT-143 Unconnected Pair
SMV1212-004 SMV1213-004
*Q @ 2V, F=1 MHz Breakdown Voltage, VB (10 A): Reverse Current, IR (10V): 12V Min. 50 nA Max.
CT @ 0.2V (pF) Min. 11 Max. 14 Min. 4
CT @ 2V (pF) Max. 6.5 Min. 1.2
CT @ 6V (pF) Max. 1.9
Q @ 2V 50 MHz Min. 250
SOD-323 Single SMV1299-011 Single SMV1299-001 Common Anode
SOT-23 Common Cathode SMV1299-004 Low Inductance
SOT-143 Unconnected Pair SMV1299-015
" All plastic packaged varactors are available through distribution.
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Alpha Industries * [617] 935 5150 * Fax [617] 824 4579 * E-mail sales@alphaind.com * Visit our web site: www.alphaind.com
Plastic Packaged Surface Mount Varactor Diodes
12 Volt Hyperabrupt Junction Varactors (cont.)
Reverse Breakdown Voltage, VB (10 A): Reverse Current, IR (8V):
CT @ 1V CT @ 2.5V (Ratio) Min. 1.5 1.5 1.5 1.5 Max. 2.0 2.0 2.0 2.0 CT @ 2.5V CT @ 4V (Ratio) Min. 1.5 1.5 1.5 1.5 Max. 2.0 2.0 2.0 2.0
12V Min. 50 nA
CT @ 2.5V 5 (pF) Min. 18 9 6 4.2 Typ. 27 13 8 5.6
Q @ 4V 50 MHz Min. 150 200 300 350
SOD-323 Single SMV1222-011 SMV1223-011 Single SMV1222-001 SMV1223-001 SMV1224-001 SMV1225-001 Common Anode
SOT-23 Common Cathode Low Inductance
SOT-143 Unconnected Pair
2
15 Volt Hyperabrupt Junction Varactors
Reverse Breakdown Voltage, VB (10 A): Reverse Current, IR (12V):
CT @ 1V CT @ 3V (Ratio) CT @ 1V CT @ 6V (Ratio) Rs @ 3V 50 MHz (W) Max.. 1.2 0.8 0.6 0.5 0.25
15V Min. 50 nA Max.
CT @ 1V (pF) Min. 3.0 5.85 10.35 15.50 45.00 Max. 3.6 7.15 12.65 18.50 54.0
Q @ 3V 50 MHz Min. 1200 1000 750 700 500
SOD-323 Single SMV1233-011 SMV1234-011 SMV1235-011 SMV1236-011 Single SMV1233-001 SMV1234-001 SMV1235-001 SMV1236-001 SMV1237-001 Common Anode
SOT-23 Common Cathode SMV1233-004 SMV1234-004 SMV1235-004 SMV1236-003 SMV1236-004 SMV1237-004 Low Inductance
SOT-143 Unconnected Pair
Min. 1.5 1.6 1.6 1.6 1.6
Max. 1.9 2.0 2.0 2.0 2.0
Min. 2.6 2.8 2.9 3.0 3.0
Max. 3.3 3.4 3.4 3.5 3.5
SMV1233-003 SMV1234-003
22 Volt Hyperabrupt Junction Varactors
Reverse Breakdown Voltage, VB (10 A): Reverse Current, IR (17.6 V):
CT1 CT @ VR 1 (pF) Min. 10.5 25 2.5 4.4 18 45 100 Max. 12.5 31 3.3 5.4 22 55 120 3 3 4 4 4 4 4 VR1 (V) CT @ VR 2 (pF) Min. 2.1 4.5 0.6 0.9 3.1 7.3 16 Max. 2.5 5.3 0.85 1.2 3.9 9.2 20 20 20 20 20 20 20 20 VR2 (V) CT2 (Ratio) Min. 4.6 4.8 3.0 4.2 4.6 5.0 5.2 Q @ VR 1 50 MHz Min. 400 300 500 500 300 200 125 SMV2022-011 SMV2023-011 SOD-323 Single SMV1206-011 Single SMV1206-001 SMV1207-001 SMV2022-001 SMV2023-001 SMV1227-001 SMV1228-001 SMV1229-001 SMV2022-003 SMV2023-003 Common Anode SOT-23 Common Cathode SMV1206-004 SMV1207-004 SMV2022-004 SMV2023-004 Low Inductance SOT-143 Unconnected Pair
22V Min. 50 nA Max.
" All plastic packaged varactors are available through distribution.
Alpha Industries * [617] 935 5150 * Fax [617] 824 4579 * E-mail sales@alphaind.com * Visit our web site: www.alphaind.com
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Plastic Packaged Surface Mount Varactor Diodes
Low Series Resistance Abrupt Junction Varactors
Reverse Breakdown Voltage, VBR (10 A): Reverse Current, IR (10V):
Rs @ 3V 50 MHz (W) Max. 0.25 0.20
12V Min. 50 nA Max.
CT @ 1.0V (pF) Min. 17.4 36.3 Max. 20.0 41.7
CT @ 4.0V 4 0V (pF) Min. 10.0 20.7 Max. 12.1 25.3
SOD-323 Single SMV1493-011 SMV1494-011 Single
SOT- 23 Common Anode Common Cathode Low Inductance
SOT-143 Unconnected Pair
" All plastic packaged varactors are available through distribution.
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Alpha Industries * [617] 935 5150 * Fax [617] 824 4579 * E-mail sales@alphaind.com * Visit our web site: www.alphaind.com
Plastic Packaged Surface Mount Varactor Diodes
30 Volt Abrupt Junction Varactors
Reverse Breakdown Voltage, VBR (10 A): Reverse Current, IR (24V):
CT0 CT @ 4V (pF) Min. 1.21 1.75 2.11 2.56 3.10 3.64 4.36 5.17 6.25 7.51 9.13 10.93 13.63 16.33 29.83 Max. 1.45 2.11 2.55 3.10 3.76 4.42 5.30 6.29 7.61 9.15 11.13 13.33 16.63 19.93 36.43 CT30 (Ratio) Min. 4.1 4.1 4.1 4.2 4.2 4.2 4.2 4.3 4.3 4.3 4.4 4.4 4.4 4.4 4.5 RS @ 4V 50 MHz (W) Max. 0.8 0.60 0.50 0.45 0.40 0.35 0.30 0.27 0.24 0.22 0.20 0.19 0.18 0.18 0.16
30V Min. 50nA Max.
Q @ 4V 50 MHz Min. 3200 2900 2800 2600 2500 2400 2200 2100 2000 1800 1600 1400 1200 1000 600
SOD-323 Single Single SMV1405-001 SMV1408-011 SMV1408-001 SMV1409-001 SMV1410-001 SMV1411-001 SMV1413-001 SMV1414-001 SMV1415-001 SMV1416-001 SMV1417-001 SMV1419-001 SMV1420-001 SMV1421-001 SMV1422-001 SMV1426-001 Common Anode
SOT-23 Common Cathode SMV1405-004 SMV1408-004 SMV1409-004 SMV1410-004 SMV1411-004 SMV1413-004 SMV1414-004 SMV1415-004 SMV1416-004 SMV1417-004 Low Inductance
SOT-143 Unconnected Pair
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" All plastic packaged varactors are available through distribution.
1. Capitance measured at 1 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 SMV1408-001, the part number becomes SMV1408-000. The package capacitance of 0.13 pF should be subtracted from the CT specifications to indicate junction capacitance.
" Chips available through distribution: SMV1212-000 SMV1213-000 SMV1214-000 SMV1233-000 SMV1236-000
Alpha Industries * [617] 935 5150 * Fax [617] 824 4579 * E-mail sales@alphaind.com * Visit our web site: www.alphaind.com
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Plastic Packaged Surface Mount Varactor Diodes
Typical Capacitance Curves
100.0 1000
10.0 Capacitance (pF)
SMV1237
100 Capacitance (pF)
SMV1236 SMV1235 SMV1234
SMV1229
1.0
SMV1233
10
SMV1228 SMV1207 SMV1227 SMV1206
SMV1244
SMV1205
0.1 0 2 4 6 8 10 Reverse Voltage (Volts)
1 0 2 4 6 8 10 12 14 16 18 20 Reverse Voltage (Volts)
Capacitance vs. Reverse Voltage
100
100 SMV1493
Capacitance vs. Reverse Voltage
Capacitance (pF)
SMV1494 10
Capacitance (pF)
10
SMV1422 SMV1421 SMV1419 SMV1417 SMV1415 SMV1413 SMV1410
1 0.1 1.0 10.0
1 Reverse Voltage (Volts) 0 2 4 6 Reverse Voltage (Volts)
SMV1408
8 10 12 14 16 18 20
Capacitance vs. Reverse Voltage
Capacitance vs. Reverse Voltage
1000
100.0 SMV1255 SMV1253 SMV1251
Capacitance (pF)
100 Capacitance (pF)
10.0 SMV1249
SMV1250
10
SMV1211 SMV1212 SMV1213 SMV1214 SMV1215
1.0
SMV1248 SMV1247
1 0 2 4 6 8 Reverse Voltage (Volts)
0.1 1 10
Reverse Voltage (Volts)
Capacitance vs. Reverse Voltage
Capacitance vs. Reverse Voltage
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Alpha Industries * [617] 935 5150 * Fax [617] 824 4579 * E-mail sales@alphaind.com * Visit our web site: www.alphaind.com
Plastic Packaged Surface Mount Varactor Diodes
Outline Dimensions
SOT-23 SOD-323
0.108 (2.70mm) 0.090 (2.30mm) 0.016 (0.40mm) 0.010 (0.25mm) 0.053 (1.35mm) 0.045 (1.15mm) 0.071 (1.80mm) 0.063 (1.60mm) 0.008 (0.20mm) 0.006 (0.15mm) TYP. 0.050 (1.25mm) MAX. 0.004 (0.10mm) MAX.
0.010 (0.25mm) MIN.
SOT-143
Alpha Industries * [617] 935 5150 * Fax [617] 824 4579 * E-mail sales@alphaind.com * Visit our web site: www.alphaind.com
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