K1109

UNISONIC TECHNOLOGIES CO., LTD K1109 N-CHANNEL JFET FOR ELECTRET CONDENSER MICROPHONE N-CHANNEL JFET  DESCRIPTION The UTC K1109 is N-channel JFET for electrets condenser microphone.  FEATURES * High GM Implies Low Transfer loss * Built-In Gate-Source Diode and Resistor Implies Fast Power on Settling Time  ORDERING INFORMATION Ordering Number K1109G-x-AE3-R K1109G-x-AQ3-R Note: Pin Assignment: S: Source D: Drain G: Gate Package SOT-23 SOT-723 Pin Assignment 123 SDG SDG Packing Tape Reel Tape Reel  MARKING www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd 1 of 4 QW-R206-009.O K1109 N-CHANNEL JFET  ABSOLUTE MAXIMUM RATINGS (unless otherwise specified ) PARAMETER SYMBOL RATINGS UNIT Drain-Source Voltage Gate-Drain Voltage VDSX VGDO 20 -20 V V Drain Current Gate Current ID IG 10 mA 10 mA Power Dissipation Junction Temperature PD TJ 80 +125 mW °C Storage Temperature TSTG -55 ~ +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 Drain Current Gate Off Voltage Forward Transfer Admittance Input Capacitance Noise Voltage SYMBOL IDSS VGS(OFF) lYFSl CISS NV TEST CONDITIONS VDS=2.0V, VGS=0 VDS=5.0V, ID=1.0A VDS=5.0V, VGS=0, f=1kHz VDS=5.0V, VGS=0, f=1.0MHz MIN TYP MAX UNIT 40 600 μA -0.1 -1.0 V ...