2N/PN/SST4117A Series Vishay Siliconix N-Channel JFETs 2N4117A PN4117A SST4117 2N4118A PN4118A SST4118 2N4119A PN4119A SST4119 PRODUCT SUMMARY Part Number VGS(off) (V) V(BR)GSS Min (V) gfs Min (mS) IDSS Min (mA) 4117 -0.6 to -1.8 -40 70 30 4118 -1 to -3 -40 80 80 4119 -2 to -6 -40 100 200 FEATURES BENEFITS APPLICATIONS D D D D D Insignificant Signal Loss/Error Voltage with High-Impedance Source D Low Power Consumption (Battery) D Maximum Signal Output, Low Noise D High Sensitivity to Low-Level Signals D High-Impedance Transducer Amplifiers D Smoke Detector Input D Infrared Detector Amplifier D Precision Test Equipment Ultra-Low Leakage: 0.2 pA Very Low Current/Voltage Operation Ultrahigh Input Impedance Low Noise DESCRIPTION The 2N/PN/SST4117A series of n-channel JFETs provide ultra-high input impedance. These devices are specified with a 1-pA limit and typically operate at 0.2 pA. This makes them perfect choices for use as high-impedance sensitive front-end amplifiers. TO-206AF (TO-72) TO-226AA (TO-92) S C 1 The hermetically sealed TO-206AF package allows full military processing per MIL-S-19500 (see Military Information). The TO-226A (TO-92) plastic package provides a low-cost option. The TO-236 (SOT-23) package provides surface-mount capability. Both the PN and SST series are available in tape-and-reel for automated assembly (see Packaging Information). D TO-236 (SOT-23) 1 4 D S 3 S 2 3 D G G Top View 2N4117A 2N4118A 2N4119A 1 2 G 2 3 Top View PN4117A PN4118A PN4119A Top View SST4117 (T7)* SST4118 (T8)* SST4119 (T9)* *Marking Code for TO-236 For applications information see AN105. Document Number: 70239 S-04028--Rev. F, 04-Jun-01 www.vishay.com 7-1 2N/PN/SST4117A Series Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Lead Temperature (1/16" from case for 10 sec.) . . . . . . . . . . . . . . . . . . . 300_C Power Dissipation (case 25_C) : (2N Prefix)a . . . . . . . . . . . . . . . . . . . . . . 300 mW (PN, SST Prefix)b . . . . . . . . . . . . . . . . 350 mW Gate-Source/Gate-Drain Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40V Forward Gate Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Storage Temperature : (2N Prefix) . . . . . . . . . . . . . . . . . . . -65 to 175_C (PN, SST Prefix) . . . . . . . . . . . . . -55 to 150_C Operating Junction Temperature : (2N Prefix) . . . . . . . . . . . . . . . . . . . -55 to 175_C (PN, SST Prefix) . . . . . . . . . . . . . -55 to 150_C Notes a. Derate 2 mW/_C above 25_C b. Derate 2.8 mW/_C above 25_C SPECIFICATIONS (TA = 25_C UNLESS OTHERWISE NOTED) Limits 4117 Parameter 4118 4119 Symbol Test Conditions Typa Min V(BR)GSS IG = -1 mA , VDS = 0 V -70 -40 VGS(off) VDS = 10 V, ID = 1 nA -0.6 -1.8 -1 -3 -2 -6 VDS = 10 V, VGS = 0 V 30 90 80 240 200 600 mA Max Min Max Min Max Unit Static Gate-Source Breakdown Voltage Gate-Source Cutoff Voltage Saturation Drain Current IDSS VGS = -20 V VDS = 0 V IGSS VGS = -10 V VDS = 0 V VGS = -10 V VDS = 0 V TA = 100_C V -0.2 -1 -1 -1 pA -0.4 -2.5 -2.5 -2.5 nA PN -0.2 -1 -1 -1 SST -0.2 -10 -10 -10 PN/SST -0.03 -2.5 -2.5 -2.5 IG VDG = 15 V, ID = 30 mA -0.2 Drain Cutoff Currentb ID(off) VDS = 10 V, VGS = -8 V 0.2 Gate-Source Forward Voltageb VGS(F) IG = 1 mA , VDS = 0 V 0.7 Gate Operating Currentb -40 2N VGS = -20 V VDS = 0 V TA = 150_C Gate Reverse Current -40 pA nA pA V Dynamic Common-Source Forward Transconductance gfs Common-Source Output Conductance gos Common-Source Input Capacitance Ciss Common-Source Reverse Transfer Capacitance Crss Equivalent Input Noise Voltageb en 70 VDS = 10 V, VGS = 0 V f = 1 kHz VDS = 10 V VGS = 0 V f = 1 MHz 1.2 SST 1.2 2N/PN 0.3 SST 0.3 Notes a. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. b. This parameter not registered with JEDEC. www.vishay.com 7-2 80 250 100 330 m mS 2N/PN VDS = 10 V, VGS = 0 V f = 1 kHz 210 15 3 5 10 3 3 3 1.5 1.5 1.5 pF nV Hz NT Document Number: 70239 S-04028--Rev. F, 04-Jun-01 2N/PN/SST4117A Series Vishay Siliconix TYPICAL CHARACTERISTICS (TA = 25_C UNLESS OTHERWISE NOTED) Drain Current and Transconductance vs. Gate-Source Cutoff Voltage Gate Leakage Current 300 800 240 180 600 gfs 120 400 IDSS 200 60 100 mA VGS(off) = -2.5 V 100 pA IG - Gate Leakage IDSS @ VDS = 10 V, VGS = 0 V gfs @ VDS = 10 V, VGS = 0 V f = 1 kHz 1 nA gfs - Forward Transconductance (S) IDSS - Saturation Drain Current (A) 1000 10 mA TA = 125_C IGSS @ 125_C 100 mA 10 pA 10 mA 1 pA IGSS @ 25_C TA = 25_C 0 0 -2 -3 -4 VGS(off) - Gate-Source Cutoff Voltage (V) 0 5 200 4 rDS 9 3 6 2 rDS @ ID = 10 mA, VGS = 0 V gos @ VDS = 10 V, VGS = 0 V f = 1 kHz 1 0 gos - Output Conductance (S) 12 0 0 -1 -2 6 12 18 24 VDG - Drain-Gate Voltage (V) 30 Common-Source Forward Transconductance vs. Drain Current VGS(off) = -2.5 V gos 3 0.1 pA -5 On-Resistance and Output Conductance vs. Gate-Source Cutoff Voltage 15 rDS(on) - Drain-Source On-Resistance ( ) -1 gfs - Forward Transconductance (S) 0 -3 -4 160 TA = -55_C 120 25_C 125_C 80 40 VDS = 10 V f = 1 kHz 0 -5 0.01 0.1 VGS(off) - Gate-Source Cutoff Voltage (V) 1 ID - Drain Current (mA) Output Characteristics Output Characteristics 100 500 VGS(off) = -0.7 V VGS(off) = -2.5 V 80 400 VGS = 0 V ID - Drain Current (A) ID - Drain Current (A) VGS = 0 V -0.1 V 60 -0.2 V 40 -0.3 V -0.4 V 20 -0.5 V 300 -0.5 V 200 -1.0 V 100 -1.5 V -2.0 V 0 0 0 4 8 12 VDS - Drain-Source Voltage (V) Document Number: 70239 S-04028--Rev. F, 04-Jun-01 16 20 0 4 8 12 16 20 VDS - Drain-Source Voltage (V) www.vishay.com 7-3 2N/PN/SST4117A Series Vishay Siliconix TYPICAL CHARACTERISTICS (TA = 25_C UNLESS OTHERWISE NOTED) Transfer Characteristics Transconductance vs. Gate-Source Voltage 100 200 VDS = 10 V VGS(off) = -0.7 V gfs - Forward Transconductance (S) VGS(off) = -0.7 V ID - Drain Current (A) 80 60 TA = 125_C 40 25_C 20 -55_C 0 160 TA = -55_C 25_C 120 80 125_C 40 0 0 -0.2 -0.4 -0.8 -0.6 VGS - Gate-Source Voltage (V) -1.0 0 Transfer Characteristics -1.0 300 VDS = 10 V gfs - Forward Transconductance (S) VGS(off) = -2.5 V 400 ID - Drain Current (A) -0.2 -0.4 -0.6 -0.8 VGS - Gate-Source Voltage (V) Transconductance vs. Gate-Source Voltage 500 TA = -55_C 300 25_C 200 100 125_C 0 VGS(off) = -2.5 V VDS = 10 V f = 1 kHz 240 TA = -55_C 180 25_C 120 125_C 60 0 0 -1 -2 -3 -4 -5 0 -1 -2 -3 -4 VGS - Gate-Source Voltage (V) VGS - Gate-Source Voltage (V) Circuit Voltage Gain vs. Drain Current Common-Source Input Capacitance vs. Gate-Source Voltage -5 2.0 100 g fs R L f = 1 MHz AV + 1 ) R g L os Assume VDD = 15 V, VDS = 5 V RL + 60 1.6 Ciss - Input Capacitance (pF) 80 AV - Voltage Gain VDS = 10 V f = 1 kHz 10 V ID VGS(off) = -0.7 V 40 20 VDS = 0 V 1.2 10 V 0.8 0.4 -2.5 V 0 0 0.01 0.1 ID - Drain Current (mA) www.vishay.com 7-4 1 0 -4 -8 -12 -16 -20 VGS - Gate-Source Voltage (V) Document Number: 70239 S-04028--Rev. F, 04-Jun-01 2N/PN/SST4117A Series Vishay Siliconix TYPICAL CHARACTERISTICS (TA = 25_C UNLESS OTHERWISE NOTED) Common-Source Reverse Feedback Capacitance vs. Gate-Source Voltage 0.5 200 Equivalent Input Noise Voltage vs. Frequency VDS = 10 V 0.4 Hz 160 0.3 en - Noise Voltage nV / Crss - Reverse Feedback Capacitance (pF) f = 1 MHz VDS = 0 V 0.2 10 V 0.1 ID = 10 mA 120 80 VGS = 0 V 40 0 0 0 -4 -8 -16 -12 -20 100 k 10 100 VGS - Gate-Source Voltage (V) 10 k f - Frequency (Hz) Output Conductance vs. Drain Current On-Resistance vs. Drain Current 2 rDS(on) - Drain-Source On-Resistance ( ) 20 VGS(off) = -2.5 V gos - Output Conductance (S) 1k TA = -55_C 25_C 1 125_C VDS = 10 V f = 1 kHz VGS(off) = -0.7 V 16 12 8 -2.5 V 4 TA = 25_C 0 0 0.01 0.1 ID - Drain Current (mA) Document Number: 70239 S-04028--Rev. F, 04-Jun-01 1 0.01 0.1 1 ID - Drain Current (mA) www.vishay.com 7-5