NJX1542 HIGH FREQUENCY VARACTOR DIODE nGENERAL DESCRIPTION NJX1542 is a GaAs varactor diode with very low toal capacitance. It is suited for VCO or detector up to SHF band. It features low total capacitance and high capacitance ratio. That adopts the SMD ceramic package. nFEATURE lHigh Total Capacitance Ratio lS~Ku Band Tuning/Irregularity lVery Small SMD Package NJX1542 3.5 typ. nABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL RATINGS UNITS Reverse Voltage VR 40 V Forward Current IF 10 mA Operating Temperature TOP -50~+125 °C Storage Temperature TSTG -50~+150 °C nELECTRICAL CHARACTERISTIC (Ta=25°C) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Forward Voltage VR IR=10uA 40 - - V Reverse Current IR VR=20V - - 1.0 uA Total Capacitance 0 Ct0 VR=0V, f=1MHz 0.60 0.75 - pF Total Capacitance 10 Ct10 VR=10V, f=1MHz - 0.2 0.24 pF VR=0V, VR=10V ,f=1MHz - 3.5 - - Total Capacitance Ratio Ct0/Ct10 -1- NJX1542 nTYPICAL CHARACTERISTICS Reverse Current vs. Reverse Voltage Forward Current vs Forward Voltage -8 10 10 -2 -9 10 -4 10 -6 Reverse Current(A) Forward Current (A) 10 -10 10 -11 10 10 10 -8 -12 10 -10 0.0 0.2 0.4 0.6 0.8 1.0 Forward Voltage (V) 1 Total Capacitance(pF) f=1MHz 0.1 1 Reverse Voltage(V) -2- 5 10 15 20 Reverse Voltage(V) Total Capacitance vs. Reverse Voltage 0.1 0 10 25 30 NJX1542 nPACKAGE OUTLINE 1.78±0.2 - 1.2±0.5 ¬ 0.5±0.1 0.5±0.1 1.78±0.2 1.3±0.5 ¬ ANODE +0.1 0.125 - 0.05 1.4±0.2 - CATHODE Cautions on using this product This product contains Gallium-Arsenide (GaAs) which is a harmful material. • Do NOT eat or put into mouth. • Do NOT dispose in fire or break up this product. • Do NOT chemically make gas or powder with this product. • To waste this product, please obey the relating law of your country. (Unit: mm) [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. This product may be damaged with electric static discharge (ESD) or spike voltage. Please handle with care to avoid these damages. -3-