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| Hyperabrupt Tuning Varactors SMV1247-SMV1255 Features I High Capacitance Ratio, C0.3 V/C4.7 V = 12 Typ. I Multiple Packages SOT-23, SOD-323, SC-70 and SC-79 I Designed for High Volume Commercial Applications I SPICE Models are Available Description The SMV1247-SMV1255 series of silicon hyperabrupt junction varactor diodes are designed for use in VCOs with low tuning voltage operation. This family of varactors is characterized for capacitance and resistance over temperature. SPICE models are provided. Absolute Maximum Ratings Characteristic Reverse Voltage (VR) Forward Current (IF) Power Dissipation (PD) Storage Temperature (TST) Operating Temperature (TOP) Value 15 V 20 mA 250 mW -55C to +150C -55C to +125C Single SC-79 o SMV1247-079 Single SOD-323 Single SOT-23 o SMV1248-001 Common Anode SOT-23 Common Cathode SOT-23 Common Anode SC-70 Common Cathode SC-70 o SMV1247-074 o SMV1249-079 o SMV1251-079 o SMV1253-079 o SMV1255-079 LS = 0.7 nH o SMV1249-011 o SMV1251-011 o SMV1255-011 LS = 1.5 nH o SMV1249-001 o SMV1251-001 o SMV1255-001 LS = 1.5 nH o SMV1249-003 o SMV1251-004 o SMV1253-004 o SMV1255-003 LS = 1.5 nH o SMV1255-004 LS = 1.5 nH o SMV1249-073 o SMV1251-074 o SMV1255-073 LS = 1.4 nH LS = 1.4 nH o Available through distribution. For other packages or configurations, please contact the factory. Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/00A 1 Hyperabrupt Tuning Varactors SMV1247-SMV1255 Electrical Specifications at 25C Part Number SMV1247 SMV1248 SMV1249 SMV1251 SMV1253 SMV1255 6.5 15.0 28.0 38.0 48.0 58.0 CT @ 0.3 V (pF) Min. Typ. 7 17 31 42 53 64 0.7 1.5 2.6 3.4 4.3 5.2 CT @ 4.7 V (pF) Typ. Max. 0.78 1.70 2.80 3.80 4.80 5.80 CT @ 1V (pF) Typ. 4.4 12.3 18.2 28.1 37.0 43.3 CT @ 3V (pF) Typ. 0.95 2.60 3.40 5.80 7.80 8.50 CT @ 0.3 V CT @ 4.7 V (Ratio) Min. 9.5 10.8 11.0 11.0 11.0 11.0 Typ. 10.0 12.0 12.1 12.2 12.3 12.3 C T @ 1 V RS @ 3 V CT @ 3 V 500 MHz (Ratio) () Typ. 4.6 4.7 5.3 4.8 4.7 5.1 Max. 2.0 1.8 1.5 1.3 1.2 1.0 Q @ 3V 50 MHz Typ. 1500 700 600 400 350 350 Reverse Voltage VR (IR = 10 A): 15 V Reverse Current IR (VR = 12 V): 20 nA Typical Performance Data 100.0 SMV1255 SMV1253 4.0 3.5 3.0 2.5 SMV1247 SMV1248 SMV1249 SMV1251 Capacitance (pF) 10.0 SMV1251 RS () SMV1249 2.0 1.5 1.0 1.0 SMV1248 SMV1247 0.1 0 2.0 4.0 6.0 8.0 0.5 0 0 1 2 SMV1253 SMV1255 3 4 5 Reverse Voltage (V) Reverse Voltage (V) Capacitance vs. Reverse Voltage Series Resistance vs. Reverse Voltage @ 500 MHz 15 3 Percentage Change (%) 2 1 0 -1 -2 -3 -40 -20 0 VR = 1 V Percentage Change (%) 10 5 0 -5 -10 -15 -20 -25 -50 -25 0 25 50 75 100 VR = 4 V 20 40 60 80 Temperature (C) Temperature (C) Relative Capacitance Change vs. Temperature Relative Series Resistance Change vs. Temperature @ 500 MHz 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/00A Hyperabrupt Tuning Varactors SMV1247-SMV1255 Typical Capacitance Values SMV1247 VR (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 CT (pF) 8.86 6.17 4.37 2.96 1.88 1.22 0.95 0.83 0.77 0.73 0.70 0.68 0.67 0.66 0.65 0.64 0.64 SMV1248 CT (pF) 22.62 16.32 12.33 9.12 6.27 3.93 2.57 1.95 1.71 1.59 1.49 1.44 1.40 1.36 1.33 1.31 1.30 SMV1249 CT (pF) 37.35 25.88 18.18 12.08 7.27 4.44 3.40 2.96 2.72 2.51 2.38 2.30 2.24 2.19 2.14 2.09 2.03 SMV1251 CT (pF) 53.65 38.23 28.09 20.13 13.55 8.60 5.78 4.57 3.95 3.58 3.33 3.16 3.03 2.94 2.88 2.83 2.79 SMV1253 CT (pF) 69.32 50.23 37.07 27.57 19.37 12.39 7.77 5.77 4.86 4.34 4.01 3.78 3.62 3.50 3.41 3.34 3.28 SMV1255 CT (pF) 81.21 58.28 43.27 31.49 21.50 13.40 8.51 6.51 5.58 5.07 4.76 4.58 4.46 4.39 4.33 4.29 4.26 SPICE Model PORT P_anode port = 1 IND LS L = LS DIODEM Diode_Model IS = 1.00e-14 RS = 0 N=1 TT = 0 CJO = CJO M=M EG = 1.11 XTI = 3 KF =0 AF =1 FC = 0.5 BV = 0 IBV = 1e-3 ISR = 0 NR = 2 IKF = 0 NBV = 1 IBVL = 0 NBVL = 1 TBV1 = 0 TNOM = 27 FFE = 1 Part Number SMV1247 SMV1248 SMV1249 SMV1250 SMV1251 SMV1253 SMV1255 CJO (pF) 9.22 21.54 39.00 47.00 60.00 70.00 82.00 VJ (V) 13 17 17 17 17 17 17 M 10.5 14.0 14.0 14.0 14.0 14.0 14.0 CP (pF) 0 0 0 0 0 0 0 RS () 2.0 1.8 1.5 1.5 1.3 1.2 1.0 RES RS R = RS DIODE Varactor_Diode AREA = 1 MODEL = Diode_Model MODE = nonlinear CAP CP C = CP 1. Values extracted from measured performance. 2. For package inductance (LS) refer to package type. 3. For more details refer to the "Varactor SPICE Models for RF VCO Applications" Application Note. PORT P_Cathode port = 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/00A 3 Hyperabrupt Tuning Varactors SMV1247-SMV1255 SOT-23 0.110 (2.80 mm) MIN. 0.120 (3.04 mm) MAX. 3 SC-70 0.012 (0.30 mm) MIN. 0.020 (0.50 mm) MAX. 0.047 (1.20 mm) MIN. 0.055 (1.40 mm) MAX. 1 2 0.071 (1.80 mm) MIN. 0.087 (2.20 mm) MAX. 0.010 (0.25 mm) MIN. 0.016 (0.40 mm) MAX. 0.071 (1.80 mm) MIN. 0.094 (2.40 mm) MAX. 0.083 (2.10 mm) MIN. 0.104 (2.64 mm) MAX. 3 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 0.037 (0.95 mm) REF. 0.020 (0.51 mm) REF. 0.076 (1.92 mm) REF. 1 0.014 (0.35 mm) REF. 2 0.026 (0.65 mm) REF. 0.051 (1.30 mm) REF. 0.003 (0.080 mm) MIN. 0.008 (0.20 mm) MAX. 8 MAX. 0.035 (0.89 mm) MIN. 0.044 (1.12 mm) MAX. 0.004 (0.10 mm) MIN. 0.007 (0.18 mm) MAX. 0.031 (0.80 mm) MIN. 0.039 (1.00 mm) MAX. 0.022 (0.55 mm) REF. 0.0005 (0.01 mm) MIN. 0.004 (0.10 mm) MAX. 0.004 (0.10 mm) MIN. 0.012 (0.30 mm) MAX. 0.000 (0.00 mm) MIN. 0.004 (0.10 mm) MAX. SOD-323 0.090 (2.30 mm) MIN. 0.108 (2.74 mm) MAX. 0.010 (0.25 mm) MIN. 0.016 (0.40 mm) MAX. 0.063 (1.60 mm) MIN. 0.071 (1.80 mm) MAX. SC-79 CATHODE 0.006 (0.15 mm) MIN. INDICATOR 0.010 (0.25 mm) MIN. 0.014 (0.35 mm) MAX. 1 2 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 1 2 0.028 (0.70 mm) MIN. 0.035 (0.90 mm) MAX. CATHODE INDICATOR 0.060 (1.50 mm) MIN. 0.067 (1.70 mm) MAX. 0.043 (1.10 mm) MIN. 0.051 (1.30 mm) MAX. 0.008 (0.20 mm) NOM. 0.006 (0.15 mm) TYP. 0.050 (1.25 mm) MAX. 0.004 (0.10 mm) MAX. 0.010 (0.25 mm) MIN. 10 MAX. 0.003 (0.07 mm) MIN. 0.008 (0.20 mm) MAX. 10 MAX. 0.020 (0.50 mm) MIN. 0.028 (0.70 mm) MAX. 4 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/00A |
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