UTC K1109
JUNCTION FIELD EFFECT TRANSISTOR
N-CHANNEL JFET FOR
ELECTRET CONDENSER
MICROPHONE
DESCRIPTION
The UTC K1109 is N-channel JFET for electret
condenser microphone.
2
1
FEATURES
*High gm implies low transfer loss
*Built-in gate-source diode and resistor implies fast
power on settling time
3
SOT-113
1: SOURCE
2: DRAIN
3: GATE
ABSOLUTE MAXIMUM RATINGS
( Operating temperature range applies unless otherwise specified )
PARAMETER
Drain-Source Voltage
Gate-Drain Voltage
Drain Current
Gate Current
Total Power Dissipation
Junction Temperature
Storage Temperature
SYMBOL
V
DSX
V
GDO
I
D
I
G
P
T
T
j
T
STG
VALUE
20
-20
10
10
80
125
-55 ~ +125
UNIT
V
V
mA
mA
mW
擄C
擄C
ELECTRICAL CHARACTERISTICS
(Tj=25擄C, unless otherwise specified)
PARAMETER
Drain Current
Gate Off Voltage
Forward Transfer Admittance
Forward Transfer Admittance
Input Capacitance
Noise Voltage
SYMBOL
I
DSS
V
GS(OFF)
lY
FS1
l
lY
FS2
l
Ciss
NV
TEST CONDITIONS
V
DS
=5.0V,V
GS
=0
V
DS
=5.0V,I
D
=1.0碌A(chǔ)
V
DS
=5.0V,I
D
=30碌A(chǔ),f=1kHz
V
DS
=5.0V, V
GS
=0,f=1kHz
V
DS
=5.0V,V
GS
=0,f=1.0MHz
MIN
40
-0.1
350
350
TYP
MAX
600
-1.0
UNIT
碌A(chǔ)
V
碌S
碌S
pF
V
480
1600
7.0
1.8
8.0
3.0
CLASSIFICATION OF I
DSS
RANK
RANGE
J34
90-180
J35
150-300
J36
200-450
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R210-002,A
1
2
