Underside View
PAD 1 – Source PAD 2 – Drain PAD 3 – Gate
LOW NOISE N-CHANNEL JFET
DESIGNED FOR SENSITIVE AMPLIFIER
STAGES IN A HERMETICALLY SEALED
PACKAGE FOR HIGH RELIABILITY
APPLICATIONS
FEATURES
• LOW CUTOFF VOLTAGE
• HIGH INPUT IMPEDANCE
• VERY LOW NOISE
• HIGH GAIN
• CECC SCREENING OPTIONS
• JAN LEVEL SCREENING OPTIONS
APPLICATIONS:
• High Gain, Low Noise Amplifiers
• Low Current, Low Voltage Battery
Powered Amplifiers
• Ultrahigh Input Impedance Pre-
Amplifier
s
TO-46
(TO-206AA)
MECHANICAL DATA
Dimensions in mm (inches)
2N4339
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@ semelab.co.uk Website: http://www.semelab.co.uk Document Number 3887
Issue 1
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
VDS Drain – Source Voltage 50V
VDG Drain – Gate Voltage 50V
VGS Gate – Source Voltage 50V
IG Gate Current 50mA
PD Total Device Dissipation at TAMB = 25°C 300mW
Derate above 25°C 2mW/°C
TJ Operating Temperature Range –55 to +175°C
TSTG Storage Temp erature Range –65 to +200°C
13 2
2.54 (0.100)
Nom.
0.48 (0.019)
0.41 (0.016)
dia.
5.84 (0.230)
5.31 (0.209)
4.95 (0.195)
4.52 (0.178)
5.33 (0.210)
4.32 (0.170)
12.7 (0.500)
min.
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
2N4339
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@ semelab.co.uk Website: http://www.semelab.co.uk Document Number 3887
Issue 1
OFF ELECTRICAL CHARACTERISTICS (Tcase = 25°C unless otherwise stated)
Parameter Test Conditions Min. Typ. Max. Unit
V(BR)GSS Gate-Source Breakdown Voltage IG = -1µA 50 V
IGSS Gate Reverse Current VGS = -30V 0.1 nA
VGS(OFF) Gate-Source Cutoff Voltage VDS = 15V ID = 0.1µA -0.6 -1.8 V
SMALL SIGNAL CHARACTE RI S TICS
Parameter Test Conditions Min. Typ. Max. Unit
|Yfs| Forward Transfer Admittance 800 2400
|Yos| Output Admit tanc e VDS = 15V f = 1.0KHz 15
µS
Ciss Input Capacitance 6.0
Crss Reverse Transfer Capacitance VDS = 15V f = 1.0KHz 2.0
pF
rds(on) Drain Source On Resistance VDS = 0V f = 1.0KHz 1700
VGS = 0V
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
FUNCTIONAL CH ARACTERISTICS
Parameter Test Conditions Min. Typ. Max. Unit
NF Noise Figure 1.0 dB
VDS = 15V f = 1.0KHz
RG = 1.0M
ON ELECTRICAL CHARACTERI STICS
Parameter Test Conditions Min. Typ. Max. Unit
IDSS Zero Gate Voltage Drain Current VDS = 15V 0.5 1.5 mA
