unisonic technologies co., ltd k1109 n-channel jfet www.unisonic.com.tw 1 of 3 copyright ? 2010 unisonic technologies co., ltd qw-r206-009.ga n-channel jfet for electret condenser microphone ? 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 pin assignment normal lead free halogen free package 1 2 3 packing k1109-x-ac3-r K1109L-X-AC3-R k1109g-x-ac3-r sot-113 s d g tape reel k1109-x-ae3-r k1109l-x-ae3-r k1109g-x-ae3-r sot-23 s d g tape reel K1109L-X-AC3-R (1)packing type (2)package type (4)lead plating (1) r: tape reel (2) ac3: sot-113, ae3: sot-23 (4) g: halogen free, l: lead free, blank: pb/sn (3)rank (3) x: refer to cl assification of i dss ? marking
k1109 n-channel jfet unisonic technologies co., ltd 2 of 3 www.unisonic.com.tw qw-r206-009.ga ? absolute maximum ratings (unless otherwise specified ) parameter symbol ratings unit drain-source voltage v dsx 20 v gate-drain voltage v gdo -20 v drain current i d 10 ma gate current i g 10 ma total power dissipation p d 80 mw junction temperature t j +125 c storage temperature t stg -55 ~ +125 c note : absolute maximum ratings are those values be yond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functiona l device operation is not implied. ? electrical characteristics (t j =25c, unless otherwise specified) parameter symbol test conditions min typ max unit drain current i dss v ds =5.0v, v gs =0 40 600 a gate off voltage v gs(off) v ds =5.0v, i d =1.0 a -0.1 -1.0 v forward transfer admittance lyfsl v ds =5.0v, v gs =0, f=1khz 600 1600 s input capacitance c iss v ds =5.0v, v gs =0, f=1.0mhz 7.0 8.0 pf noise voltage nv 1.8 3.0 v ? classification of i dss rank j32 j33 j34 j35 j36 j37 range 40-70 60-110 90-180 150-300 200-450 300-600
k1109 n-channel jfet unisonic technologies co., ltd 3 of 3 www.unisonic.com.tw qw-r206-009.ga ? test circuit 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.
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