UNISONIC TECHNOLOGIES CO., LTD
TF202
N-CHANNEL JFET CAPACITOR
MICROPHONE APPLICATIONS
DESCRIPTION
The UTC
TF202
uses advanced trench technology to provide
excellent R
DS (ON)
, low gate charge and operation with low gate
voltages. This device is suitable for use in capacitor microphone
applications.
N-CHANNEL JFET
FEATURES
*Suited for use in audio, telephone capacitor microphones.
*Good voltage characteristic.
*Good transient characteristic.
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
TF202L-x-AC3-R
TF202G-x-AC3-R
TF202L-x-AE3-R
TF202G-x-AE3-R
TF202L-x-AN3-R
TF202G-x-AN3-R
Package
SOT-113
SOT-23
SOT-523
Pin Assignment
1
2
3
S
D
G
S
D
G
S
D
G
Packing
Tape Reel
Tape Reel
Tape Reel
MARKING
TF202-E4
TF202-E5
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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QW-R210-001.F
TF202
ABSOLUTE MAXIMUM RATINGS
( T
A
=25°С, unless otherwise specified )
PARAMETER
Gate Drain Voltage
Gate Current
Drain Current
Power Dissipation
Junction Temperature
Storage Temperature
SYMBOL
V
GDO
I
G
I
D
P
D
T
J
T
STG
N-CHANNEL JFET
RATING
-20
10
1
100
150
-55~+150
UNIT
V
mA
mA
mW
°С
°С
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, unless otherwise specified)
PARAMETER
Gate Drain Breakdown Voltage
Gate Source Cut off Voltage
Drain Current
Forward Transfer Admittance
Input Capacitance
Output Capacitance
Voltage Gain
Reduced Voltage Characteristic
Frequency Characteristic
Input Resistance
Output Resistance
Total Harmonic distortion
Output Noise Voltage
SYMBOL
BV
GDO
V
GS(OFF)
I
DSS
lYFSl
C
ISS
C
RSS
G
V
△G
VV
△G
Vf
Z
IN
Z
O
THD
V
NO
TEST CONDITIONS
I
G
=-100μA
V
DS
=5V, I
D
=1μA
V
DS
=5V, V
GS
=0
V
DS
=5V, V
GS
=0, f=1KHz
V
DS
=5V, V
GS
=0, f=1MHz
V
DS
=5V, V
GS
=0, f=1MHz
V
IN
=10mV, f=1KHz
V
IN
=10mV,f=1KHz, V
CC
=4.5V→1.5V
f=1KHz to 110Hz
f=1KHz
f=1KHz
V
IN
=30mV, f=1KHz
V
IN
=0
MIN
-20
-0.2
140
0.5
TYP MAX UNIT
V
-0.6 -1.2
V
350
μA
1.2
mS
3.5
pF
0.65
pF
-3
dB
-1.2 -3.5
dB
-1
dB
MΩ
700
Ω
1
%
-110 dB
25
CLASSIFICATION OF I
DSS
RANK
RANGE
E4
140-240
E5
210-350
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R210-001.F
TF202
TEST CIRCUIT
(T
A
=25°C)
N-CHANNEL JFET
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R210-001.F
TF202
TYPICAL CHARACTERISTICS
N-CHANNEL JFET
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R210-001.F
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