Hyperabrupt Junction Tuning Varactor SMV1245-011 Features ■ High Tuning Ratio ■ Low Series Resistance ■ SOD-323 Package ■ Designed for High Volume, Low Cost Applications ■ Available in Tape and Reel Packaging Description The SMV1245-011 is a surface mount varactor diode in the SOD-323 plastic package. It is designed for very low series resistance applications such as RF and microwave VCOs. Absolute Maximum Ratings Characteristic Value Forward Current (IF) 20 mA Power Dissipation (PD) 250 mW Storage Temperature (TST) -55°C to +150°C Operating Temperature (TOP) -55°C to +125°C Electrical Specifications at 25°C Parameter Condition Breakdown Voltage (VBR) IR = 10 µA Reverse Current (IR) VR = 10 V Frequency Min. Typ. Max. Unit 50.00 nA pF 26.00 V Capacitance (CT) CT @ 1 V, VR = 1 V, F = 1 MHz 4.40 5.40 Capacitance Ratio (CTR) CT (1 V)/CT (3 V) 1.47 1.76 Capacitance Ratio (CTR) CT (1 V)/CT (9 V) 3.50 4.20 Series Resistance (RS) VR = 1 V, F = 500 MHz Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 5/99A 2.00 Ω 1 Hyperabrupt Junction Tuning Varactor SMV1245-011 Capacitance vs. Voltage Typical Performance Data Capacitance (pF) 10 1 0 1 2 3 4 5 6 7 8 9 10 11 12 VR (V) CT (pF) 0.0 7.37 0.5 5.84 1.0 4.93 1.5 4.28 2.0 3.79 2.5 3.40 3.0 3.06 3.5 2.76 4.0 2.51 4.5 2.28 Varactor Voltage (V) 5.0 2.09 Capacitance vs. Voltage 5.5 1.92 6.0 1.78 6.5 1.66 7.0 1.55 7.5 1.46 8.0 1.38 8.5 1.32 9.0 1.26 SOD-323 0.090 (2.30 mm) MIN. 0.108 (2.70 mm) MAX. 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 1 0.010 (0.25 mm) MIN. 0.016 (0.40 mm) MAX. 2 CATHODE INDICATOR 0.063 (1.60 mm) MIN. 0.071 (1.80 mm) MAX. 0.008 (0.20 mm) NOM. 0.006 (0.15 mm) TYP. 0.050 (1.25 mm) MAX. 9.5 1.20 10.0 1.16 10.5 1.12 11.0 1.08 11.5 1.05 12.0 1.02 0.004 (0.10 mm) MAX. 0.010 (0.25 mm) MIN. 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 5/99A