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| Hyperabrupt Junction Tuning Varactor SMV1281-011 Features s High Tuning Ratio s SOD-323 Package s Designed for High Volume, Low Cost Applications s Available in Tape and Reel Packaging Description The SMV1281-011 is a surface mount varactor diode in the SOD-323 plastic package. It is designed for very high capacitance tuning ratio while having low series resistance, which makes this device especially attractive for wideband VCO applications. Absolute Maximum Ratings Characteristic Forward Current (IF) Power Dissipation (PD) Storage Temperature (TST) Operating Temperature (TOP) Value 20 mA 250 mW -55C to +150C -55C to +125C Electrical Specifications at 25C Parameter Reverse Current (IR) Capacitance (CT) Capacitance (CT) Capacitance Ratio (CTR) Series Resistance (RS) Breakdown Voltage (VBR) 1V 20 V 1 V/20 V VR = 1 V, F = 500 MHz IR = 10 A 24.0 Condition VR = 20 V 7.8 0.6 8.6 0.7 12.0 1.7 V Min. Typ. Max. 20.0 9.5 0.8 Unit nA pF pF Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/01A 1 Hyperabrupt Junction Tuning Varactor SMV1281-011 Typical Performance Data 14 12 Capacitance vs. Reverse Voltage VR (V) 0 1 CT (pF) 13.30 8.60 6.30 4.80 3.60 2.70 2.00 1.60 1.40 1.20 1.10 1.00 0.94 0.89 0.85 0.81 0.78 0.75 0.73 0.71 0.69 Capacitance (pF) 10 8 6 4 2 0 0 2 4 6 8 10 12 14 16 18 20 2 3 4 5 6 7 8 9 10 11 12 Reverse Voltage (V) Capacitance vs. Reverse Voltage 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. 13 14 15 16 17 18 19 CATHODE INDICATOR 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 1 2 20 0.008 (0.20 mm) NOM. 0.006 (0.15 mm) TYP. 0.050 (1.25 mm) MAX. 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 VJ 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 0.004 (0.10 mm) MAX. 0.010 (0.25 mm) MIN. RES RS R = RS DIODE Varactor_Diode AREA = 1 MODEL = Diode_Model MODE = nonlinear CAP CP C = CP PORT P_Cathode port = 2 Part Number SMV1281-011 CJ0 (pF) 13 VJ (V) 14 M 6 CP (pF) 0.62 RS () 1.7 LS (nH) 1.2 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/01A |
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