Preliminary Low Capacitance High Voltage Schottky Diode SMS3925-079 Features ■ Silicon Schottky Diode for Detector Applications ■ Ultra Small SC-79 Package ■ Designed for High Volume, Low Cost Applications ■ Available in Tape and Reel Packaging Description The SMS3925-079 is a 40 V, 0.6 pF RF Schottky diode designed for use as a level detector in wireless handsets and for general purpose switching applications. The SMS3925-079 is packaged in the surface mount miniature SC-79 package and is designated for low cost, high volume applications. Absolute Maximum Ratings Characteristic Value Reverse Voltage (VR) 40 V Forward Current - 1 mS Pulse (IF) 1A Forward Current - Steady State (IF) 50 mA Power Dissipation (PD) 250 mW Storage Temperature (TST) -65°C to +150°C Operating Temperature (TOP) -65°C to +150°C Junction Temperature (TJ) 150°C Electrostatic Discharge (ESD) Human Body Model (HBM) Class 1B Electrical Specifications at 25°C Parameter Condition Reverse Current (IR) VR = 40 V Capacitance (CT)1 VR = 0 V, F = 1 MHz Forward Voltage (VF) IF = 1 mA Min. 0.57 Typ. Max. Unit 10 uA 0.48 0.6 pF 0.62 0.67 V 1. Capacitance is total capacitance (CT), junction capacitance (CJ) + package capacitance (CP). Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 8/99A 1 Low Capacitance High Voltage Schottky Diode Typical Performance Data SPICE Model Parameters 0.6 Capacitance (pF) 0.5 0.4 0.3 0.2 0.1 0 0 5 SMS3925-079 10 15 Reverse Voltage (V) Total Capacitance vs. Reverse Voltage Parameter Units SMS3925 IS A 1.8E-09 RS Ω 5.4 N - 1.7 TT S 8E-11 CJ0 pF 0.36 M - 0.24 EG eV 0.69 XTI - 2 FC - 0.5 BV V 58 IBV A 1.00E-05 VJ V 0.800 SC-79 CATHODE 0.006 (0.15 mm) MIN. INDICATOR 0.010 (0.25 mm) MIN. 0.014 (0.35 mm) MAX. 1 2 0.028 (0.70 mm) MIN. 0.035 (0.90 mm) MAX. 0.060 (1.50 mm) MIN. 0.067 (1.70 mm) MAX. 0.043 (1.10 mm) MIN. 0.051 (1.30 mm) MAX. 0.020 (0.50 mm) MIN. 0.028 (0.70 mm) MAX. 10˚ MAX. 0.003 (0.07 mm) MIN. 0.008 (0.20 mm) MAX. 10˚ MAX. 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 8/99A