2N/PN/SST4117A Series
Vishay Siliconix
Document Number: 70239
S-41231—Rev. G, 28-Jun-04
www.vishay.com
1
N-Channel JFETs
2N4117A PN4117A SST4117
2N4118A PN4118A SST4118
2N4119A PN4119A SST4119
PRODUCT SUMMARY
Part Number V
GS(off)
(V) V
(BR)GSS
Min (V) g
fs
Min (C0109S) I
DSS
Min (C0109A)
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
C0068 Ultra-Low Leakage: 0.2 pA
C0068 Very Low Current/Voltage Operation
C0068 Ultrahigh Input Impedance
C0068 Low Noise
C0068 Insignificant Signal Loss/Error Voltage
with High-Impedance Source
C0068 Low Power Consumption (Battery)
C0068 Maximum Signal Output, Low Noise
C0068 High Sensitivity to Low-Level Signals
C0068 High-Impedance Transducer
Amplifiers
C0068 Smoke Detector Input
C0068 Infrared Detector Amplifier
C0068 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).
G
S
TO-206AF
(TO-72)
D
Top View
2N4117A
2N4118A
2N4119A
C
1
23
4
D
G
Top View
PN4117A
PN4118A
PN4119A
TO-226AA
(TO-92)
S
1
2
3
D
S
G
TO-236
(SOT-23)
2
3
1
Top View
SST4117 (T7)*
SST4118 (T8)*
SST4119 (T9)*
*Marking Code for TO-236
For applications information see AN105.