FEATURES

Ultra-Low Leakage: 0.2 pA

Very Low Current/Voltage Operation

Ultrahigh Input Impedance

Low Noise

BENEFITS

Insignificant Signal Loss/Error Voltage

with High-Impedance Source

Low Power Consumption (Battery)

Maximum Signal Output, Low Noise

High Sensitivity to Low-Level Signals

APPLICATIONS

High-Impedance Transducer

Amplifiers

Smoke Detector Input

Infrared Detector Amplifier

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).