2N4117A_TO-71 Datasheet, PDF (1/1 Pages) Micross Components – an Ultra-High Input Impedance N-Channel JFET

2N4117A
N-CHANNEL JFET
Linear Systems replaces discontinued Siliconix 2N4117A
The 2N4117A is an Ultra-High Input Impedance N-Channel JFET
The 2N4117A provides ultra-high input impedance. The
device is specified with a 1-pA limit and typically
operates at 0.2 pA. The part is ideal for use as a high-
impedance sensitive front-end amplifier.
2N4117A Benefits:
ƒ Insignificant Signal Loss / Error Voltage
with High-Impedance Source
ƒ Low Power Consumption (Battery)
ƒ Maximum Signal Output, Low Noise
ƒ High Sensitivity to Low-Level Signals
2N4117A Applications:
ƒ High-Impedance Transducer
ƒ Smoke Detector Input
ƒ Infrared Detector Amplifier
ƒ Precision Test Equipment
FEATURES
DIRECT REPLACEMENT FOR SILICONIX 2N4117A
LOW POWER
MINIMUM CIRCUIT LOADING
ABSOLUTE MAXIMUM RATINGS
@ 25°C (unless otherwise noted)
Maximum Temperatures
Storage Temperature
Operating Junction Temperature
Maximum Power Dissipation
Continuous Power Dissipation
MAXIMUM CURRENT
Gate Current (Note 1)
MAXIMUM VOLTAGES
Gate to Drain or Gate to Source (Note 2)
I_DSS<90 µA
I_GSS<1 pA
‐65°C to +175°C
‐55°C to +150°C
300mW
50mA
‐40V
2N4117A ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
Click SYMBOL
BV_GSS
V_GS(off)
I_DSS
I_GSS
CHARACTERISTIC
MIN
Gate to Source Breakdown Voltage ‐40
Gate to Source Cutoff Voltage
‐0.6
Gate to Source Saturation Current 0.03
Gate Leakage Current
‐‐
To Buy ^TYP.
MAX
‐‐
‐‐
‐‐
‐1.8
‐‐
0.09
‐‐
‐1
UNITS
V
V
mA
pA
CONDITIONS
I_G = ‐1µA, V_DS = 0V
V_DS = 10V, I_D = 1nA
V_DS = 10V, V_GS = 0V
V_GS = ‐20V, V_DS = 0V
‐‐
‐‐
‐2.5
V_GS = ‐20V, V_DS = 0V, 150°C
g_fs
Forward Transconductance(Note 3) 70
‐‐
210
µmho
V_DS = 10V, V_GS = 0V, f = 1kHz
g_os
Output Conductance
‐‐
‐‐
3
C_iss
Input Capacitance
‐‐
‐‐
3
C_rss
Reverse Transfer Capacitance
‐‐
‐‐
1.5
pF
V_DS = 10V, V_GS = 0V, f = 1MHz
NOTES
1 . Absolute maximum ratings are limiting values above which 2N4117A serviceability may be impaired.
2. Due to symmetrical geometry, these units may be operated with source and drain leads interchanged
3. This parameter is measured during a 2ms interval 100ms after power is applied. (Not a JEDEC condition.)
Micross Components Europe
Tel: [phone]
Email: [e-mail]
Web: http://www.micross.com/distribution
Available Packages:
2N4117A in TO-71
2N4117A in bare die.
Please contact Micross for full
package and die dimensions
TO-71 (Bottom View)
Information furnished by Linear Integrated Systems and Micross Components is believed to be accurate and reliable. However, no responsibility is assumed
for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Linear Integrated Systems.
Micross Components Ltd, United Kingdom, Tel: [phone], Fax: [phone], Email: [e-mail] Web: www.micross.com/distribution.aspx