Maker : Fairchild Semiconductor
Part No. : U1898

  Datasheet PDF : U1898.pdf
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Product Information

U1898 U1898 N-Channel Switch • This device is designed for low level analog switching, sample and hold circuits and chopper stabalized amplifiers. • Sourced from Process 51. • See J111 for characteristics. TO-92 1 1. Drain 2. Source 3. Gate Absolute Maximum Ratings* Ta=25°C unless otherwise noted Symbol VDG VGS IGF TJ, TSTG Parameter Drain-Gate Voltage Gate-Source Voltage Forward Gate Current Operating and Storage Junction Temperature Range Ratings 40 -40 50 -55 ~ 150 Units V V mA °C * This ratings are limiting values above which the serviceability of any semiconductor device may be impaired. NOTES: 1) These rating are based on a maximum junction temperature of 150 degrees C. 2) These are steady limits. The factory should be consulted on applications involving pulsed or low duty cycle operations. Electrical Characteristics Ta=25°C unless otherwise noted Symbol Off Characteristics V(BR)GS VGS(off) IDGO IDSS rDS(on) Small Signal Characteristics rds(on) Ciss Crss ton toff Drain-Source On Resistance Input Capacitance Reverse Transfer Capacitance Turn-On Time Turn-Off Time VDS = VGS = 0, f= 1.0 kHz VDS = 20, VGS = 0, f = 1.0 MHz VGS = - 20 V, f = 1.0 MHz ID(on) = 6.0 mA VGS(off) = 6.0 V 50 16 5.0 35 60 Ω pF pF ns ns Parameter Test Condition IG = 1.0 µA, VDS = 0 VDS = 20 V, ID = 1.0 nA VDG = 20 V, IS = 0 VDS = 20 V, VGS = 0 ID = 1.0 mA, VGS = 0 15 50 Min. -40 -2.0 -7.0 -200 Max. Units V V pA mA Ω Gate-Source Breakdown Voltage Gate-Source Cutoff Voltage Drain-Gate Leakage Current Zero-Gate Voltage Drain Current * On Characteristics Switching Characteristics * Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2.0% Thermal Characteristics Ta=25°C unless otherwise noted Symbol PD RθJC RθJA Parameter Total Device Dissipation Derate above 25°C Thermal Resistance, Junction to Case Thermal Resistance, Junction to Ambient Max. 625 5.0 125 357 Units mW mW/°C °C/W °C/W ©2004 Fairchild Semiconductor Corporation Rev. A, April 2004 U1898 Package Dimensions TO-92 4.58 –0.15 +0.25 0.46 14.47 ±0.40 ±0.10 4.58 ±0.20 1.27TYP [1.27 ±0.20] 3.60 ±0.20 1.27TYP [1.27 ±0.20] 0.38 –0.05 +0.10 3.86MAX 1.02 ±0.10 0.38 –0.05 +0.10 (R2.29) (0.25) Dimensions in Millimeters ©2004 Fairchild Semiconductor Corporation Rev. A, April 2004 TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACEx™ FACT Quiet Series™ ActiveArray™ FAST® FASTr™ Bottomless™ FPS™ CoolFET™ CROSSVOLT™ FRFET™ GlobalOptoisolator™ DOME™ GTO™ EcoSPARK™ HiSeC™ E2CMOS™ EnSigna™ I2C™ i-Lo™ FACT™ Across the board. Around the world.™ The Power Franchise® Programmable Active Droop™ DISCLAIMER ImpliedDisconnect™ ISOPLANAR™ LittleFET™ MICROCOUPLER™ MicroFET™ MicroPak™ MICROWIRE™ MSX™ MSXPro™ OCX™ OCXPro™ OPTOLOGIC® OPTOPLANAR™ PACMAN™ POP™ Power247™ PowerSaver™ PowerTrench® QFET® QS™ QT Optoelectronics™ Quiet Series™ RapidConfigure™ RapidConnect™ SILENT SWITCHER® SMART START™ SPM™ Stealth™ SuperFET™ SuperSOT™-3 SuperSOT™-6 SuperSOT™-8 SyncFET™ TinyLogic® TINYOPTO™ TruTranslation™ UHC™ UltraFET® VCX™ FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems 2. A critical component is any component of a life support wh...

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