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J202 Datasheet

Amplifier

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J202
N-CHANNEL JFET
Linear Systems replaces discontinued Siliconix J202
The J202 is a high gain N-Channel JFET
This n-channel JFET is optimised for high gain. The
part is particularly suitable for use in low power or high
impedance amplifiers. The TO-92 package is well
suited for cost sensitive applications and mass
production.
FEATURES 
DIRECT REPLACEMENT FOR SILICONIX J202 
LOW CUT OFF VOLTAGE 
VGS(off) ≤ 1.5 
HIGH GAIN 
AV = 80 V/V 
ABSOLUTE MAXIMUM RATINGS @ 25°C (unless otherwise noted) 
(See Packaging Information).
Maximum Temperatures 
J202 Benefits:
ƒ High Input Impedance
ƒ Low Cutoff Voltage
ƒ Low Noise
J202 Applications:
ƒ Battery powered amplifiers
ƒ Audio Pre-Amplifiers
ƒ Infra-Red Detector Amplifiers
Storage Temperature 
Operating Junction Temperature 
Maximum Power Dissipation 
Continuous Power Dissipation  
MAXIMUM CURRENT
Forward Gate Current (Note 1) 
MAXIMUM VOLTAGES 
Gate to Drain Voltage 
Gate to Source Voltage 
65°C to +150°C 
55°C to +135°C 
350mW 
50mA 
VGDS = ‐40V 
VGSS = ‐40V 
  
 
 
J202 ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL 
BVGSS 
VGS(off) 
IDSS 
ClickIGSS 
CHARACTERISTIC 
Gate to Source Breakdown Voltage 
Gate to Source Cutoff Voltage 
Drain to Source Saturation Current (Note 2) 
Gate Reverse Current 
IG  Gate Operating Current 
ToMIN  TYP.  MAX 
40  ‐‐ 
‐‐ 
0.8  ‐‐ 
4 
0.9  ‐‐  4.5 
2  ‐‐  ‐100 
‐‐  ‐2  ‐‐ 
BuyUNITS 
 
V 
mA 
 
CONDITIONS 
IG = 1µA,   VDS = 0V 
VDS = 15V, ID = 10nA 
VDS = 15V,  VGS = 0V 
VGS = ‐20V,  VDS = 0V 
pA  VDG = 10V,  ID = 0.1mA 
ID(off) 
Drain Cutoff Current 
‐‐   2  ‐‐ 
VDS = 15V, VGS = ‐5V 
gfs 
Forward Transconductance 
1  ‐‐  ‐‐  mS 
VDS = 15V,   VGS = 0V , f = 1kHz 
Ciss 
Input Capacitance 
‐‐  4.5  ‐‐  pF 
VDS = 15V, VGS = 0V, f = 1MHz 
Crss 
Reverse Transfer Capacitance 
‐‐  1.3  ‐‐ 
 
en 
Equivalent Noise Voltage 
‐‐ 
6 
‐‐  nV/Hz 
VDS = 10V,  ID = 1mA , f = 1kHz 
Note 1 ‐ Absolute maximum ratings are limiting values above which J202 serviceability may be impaired.  
Note 2  Pulse test: PW≤ 300 µs, Duty Cycle ≤ 3% 
Micross Components Europe
Tel: +44 1603 788967
Email: chipcomponents@micross.com
Web: http://www.micross.com/distribution
Available Packages:
J202 in TO-92
J202 in bare die.
Please contact Micross for full
package and die dimensions
TO-92 (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: chipcomponents@micross.com Web: www.micross.com/distribution.aspx
Micross
Micross



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