UNISONIC TECHNOLOGIES CO., LTD BB179 DIODE UHF VARIABLE CAPACITANCE DIODE DESCRIPTION The UTC BB179 is a planar technology variable capacitance diode providing the designers excellent matching performance, low series resistance and great linearity. The UTC BB179 is suitable for VCO (Voltage Controlled Oscillators) and Electronic tuning in UHF (Very High Frequency) tuners. 1 2 SOD-523 FEATURES * Excellent matching to 2% DMA * Low series resistance. * Great linearity * C28: 2.1 pF; ratio: 9 SYMBOL ORDERING INFORMATION Ordering Number BB179G-CC2-R Note: Pin Assignment: A: Anode K: Cathode Package SOD-523 Pin Assignment 1 2 A K Packing Tape Reel MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 3 QW-R601-033.C BB179 DIODE ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Continuous Reverse Voltage VR 30 V Peak Reverse Voltage (In series with a 10 kΩ resistor) VRM 35 V Continuous Forward Current IF 20 mA Storage Temperature TSTG -40~+150 °C Operating Junction Temperature TJ -40~+125 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (TJ =25°C unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT VR = 30 V 10 nA 200 nA VR = 30 V, TJ=85 °C f = 470 MHz, VR is the value at 0.6 0.75 Ω which Cd=9pF VR = 1 V, f = 1 MHz 18.22 23 pF VR = 28 V, f = 1 MHz 5 pF Reverse Current IR Diode Series Resistance rS Diode Capacitance Cd Capacitance Ratio Cd(1V) Cd(2V) f = 1 MHz Capacitance Ratio Cd(1V) Cd(28V) f = 1 MHz Capacitance Ratio Cd(25V) Cd(28V) f = 1 MHz Capacitance Matching ∆Cd Cd UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw VR = 1~28 V, in a sequence of 15 diodes (gliding) 1.27 6 1.05 2 % 2 of 3 QW-R601-033.C BB179 DIODE TYPICAL CHARACTERISTICS 85°C 25°C 10 1 Typical Reverse Characteristics Typical Forward Characteristics 100 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Instantaneous Reverse Current, IR (nA) Instantaneous Forward Voltage, VF (V) 350 Instantaneous Reverse Current , IR (mA) Instantantaneous Forward Current, IF (mA) 10 85°C 1 25°C 0.1 0 10 20 30 40 50 Instantaneous Reverse Voltage, VR (V) Instantaneous Reverse Current vs. Breakdown Voltage 300 250 200 150 100 50 0 10 20 30 40 50 60 70 80 Instantaneous Reverse Voltage, VR (V) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 3 QW-R601-033.C