鈭?/div>
40
鈭?0
g
fs
Min (mS)
70
80
100
I
DSS
Min (mA)
30
80
200
FEATURES
D
D
D
D
Ultra-Low Leakage: 0.2 pA
Very Low Current/Voltage Operation
Ultrahigh Input Impedance
Low Noise
BENEFITS
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
APPLICATIONS
D
High-Impedance Transducer
Amplifiers
D
Smoke Detector Input
D
Infrared Detector Amplifier
D
Precision Test Equipment
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.
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).
TO-206AF
(TO-72)
S
1
4
S
C
D
TO-226AA
(TO-92)
TO-236
(SOT-23)
1
D
2
S
2
1
3
G
2
D
Top View
2N4117A
2N4118A
2N4119A
3
G
G
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-41231鈥擱ev. G, 28-Jun-04
www.vishay.com
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