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2N4119A fiches techniques PDF

Micross - High Impedence

Numéro de référence 2N4119A
Description High Impedence
Fabricant Micross 
Logo Micross 





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2N4119A fiche technique
2N4119A
N-CHANNEL JFET
Linear Systems replaces discontinued Siliconix 2N4119A
The 2N4119A is an Ultra-High Input Impedance N-Channel JFET
The 2N4119A 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.
2N4119A 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
2N4119A Applications:
ƒ High-Impedance Transducer
ƒ Smoke Detector Input
ƒ Infrared Detector Amplifier
ƒ Precision Test Equipment
FEATURES 
DIRECT REPLACEMENT FOR SILICONIX 2N4119A 
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) 
 
IDSS<90 µA  
IGSS<1 pA 
65°C to +175°C 
55°C to +150°C 
300mW 
50mA 
40V 
 
 
2N4119A ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL 
BVGSS 
VGS(off) 
IDSS 
ClickIGSS 
CHARACTERISTIC 
Gate to Source Breakdown Voltage 
Gate to Source Cutoff Voltage 
Gate to Source Saturation Current 
Gate Leakage Current 
MIN 
40 
2 
0.20 
‐‐ 
To BuyTYP. 
‐‐ 
‐‐ 
‐‐ 
‐‐ 
MAX 
‐‐ 
6 
0.60 
1 
UNITS 
V 
V 
mA 
pA 
CONDITIONS 
IG = ‐1µA,   VDS = 0V 
                  VDS = 10V,   ID = 1nA 
VDS = 10V,   VGS = 0V 
VGS = ‐20V,  VDS = 0V 
‐‐  ‐‐  ‐2.5 
gfs 
Forward Transconductance(Note 3)  100 
‐‐ 
330 
gos 
Output Conductance 
‐‐  ‐‐ 
10 
µmho 
VGS = ‐20V,  VDS = 0V,  150°C 
VDS = 10V,   VGS = 0V,   f = 1kHz 
 
Ciss 
Input Capacitance 
‐‐  ‐‐ 
3 
Crss 
Reverse Transfer Capacitance 
‐‐ 
‐‐ 
1.5 
 
pF 
 
VDS = 10V,   VGS = 0V,   f = 1MHz 
 
 
  
 
 
 
 
 
  
 
 
 
  1 . Absolute maximum ratings are limiting values above which 2N4119A serviceability may be impaired.  
NOTES  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: +44 1603 788967
Web: http://www.micross.com/distribution
Available Packages:
2N4119A in TO-71
2N4119A 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: +44 1603 788967, Fax: +44 1603788920, Email: [email protected] Web: www.micross.com/distribution.aspx

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