
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 SANYO products described or contained
herein.
N-Channel Junction FET
2SK1578
Capacitor Microphone Applications
Ordering number:EN4178A
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
61599TH (KT)/72297TS (KOTO)/12094TH (KOTO) 8-7215 No.4178–1/4
Specifications
Absolute Maximum Ratings
at Ta = 25C
Package Dimensions
unit:mm
2034A
[2SK1578]
Features
· Especially suited for use in audio, telephone capaci-
tor microphones.
· Excellent voltage characteristics.
· Excellent transient characteristics.
· Adoption of FBET process.
C
C
Electrical Characteristics
at Ta = 25C
1 : Source
2 : Gate
3 : Drain
SANYO : SPA
4.0
0.4
0.5
0.4
0
1
3
1
1
1.3
2
3
2.2
0.4
1.3
3.0
3.8nom
0
0
* : The 2SK1578 is classified by I
DSS
as follows : (unit :
μ
A)
0
7
1
A
0
0
1
0
4
2
B
0
5
1
0
5
3
C
0
1
2
0
8
4
D
0
2
3
0
0
8
E
0
4
4
r
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)
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|
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D
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D
VS
D
VS
D
VS
D
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μ
I
V
,
V
5
V
5
=
V
5
=
V
5
=
0
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=
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=
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μ
m
p
p
g
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=
μ
=
1
=
6
–
5
–
0
8
t
e
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e
c
n
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d
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*
0
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0
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|
,
,
,
z
z
z
H
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M
M
M
1
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1
8
S
F
F
c
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p
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8