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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.

FEATURES 

DIRECT REPLACEMENT FOR LF5301  

HIGH INPUT IMPENDANCE 

HIGH GAIN 

ABSOLUTE MAXIMUM RATINGS  

@ 25°C (unless otherwise noted) 

Maximum Temperatures 

Storage Temperature ‐65°C to +175°C 

Operating Junction Temperature ‐65°C to +150°C 

Maximum Power Dissipation 

Continuous Power Dissipation  

300mW 

MAXIMUM CURRENT

Gate Current (Note 1) 

50mA 

MAXIMUM VOLTAGES 

Gate to Drain or Gate to Source ‐30V 

  

  

 

PF5301 ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)

SYMBOL 

CHARACTERISTIC 

MIN 

TYP. 

MAX 

UNITS 

CONDITIONS 

Gate to Source Breakdown Voltage ‐30 

‐‐ 

‐‐ 

V 

Gate to Source Cutoff Voltage 

0.6 

‐‐ 

3.0 

V 

                  VDS = 10V,   ID = 1nA 

Gate Leakage Current 

‐‐ 

‐‐ 

‐1 

pA 

VDG = 0V,     VGS = ‐15V 

Gate Operating Current 

‐‐ 

0.04 

‐‐ 

VDG = 6V,    ID = 5µA 

Gate to Source Saturation Current 

30 

‐‐ 

500 

µA 

VDS = 10V,   VGS = 0V 

Forward Transconductance 

70 

‐‐ 

300 

µS 

VDS = 10V,   VGS = 0V, f = 1kHz 

Input Capacitance 

‐‐ 

‐‐ 

3 

pF 

VDS = 10V,   VGS = 0V, f = 1MHz 

Reverse Transfer Capacitance 

‐‐ 

‐‐ 

1.5 

Equivalent Input Noise Voltage 

‐‐ 

45 

150 

nV/√Hz  

VDG = 10V,    ID = 50µA , f = 100Hz 

 

NOTES 

1 . Absolute maximum ratings are limiting values above which PF5301 serviceability may be impaired.  

The PF5301 is a very High Input Impedance N-Channel JFET amplifier

PF5301

N-CHANNEL JFET

Linear Systems replaces discontinued LF5301

The PF5301

N-channel JFET is designed to provide

performance amplification at low frequencies and with

low noise.

The hermetically sealed TO-18 package is well suited

for military applications and harsh environment

PF5301 Applications:

High-Impedance Transducer

Smoke Detector Input

Infrared Detector Amplifier

Precision Test Equipment

PF5301 Benefits:

Insignificant Signal Loss/Error Voltage

with High-Impedance Source

Maximum Signal Output, Low Noise

High Sensitivity to Low-Level Signals

Micross Components Europe

Tel: +44 1603 788967

Available Packages:

PF5301 in TO-72

PF5301 in bare die.

Please contact Micross for full

package and die dimensions

TO-72 (Bottom View)