Ordering number:EN4178A
N-Channel Junction FET
2SK1578
Capacitor Microphone Applications
Features
· Especially suited for use in audio, telephone capaci-
tor microphones.
· Excellent voltage characteristics.
· Excellent transient characteristics.
· Adoption of FBET process.
Package Dimensions
unit:mm
2034A
[2SK1578]
4.0
2.2
0.4
0.5
0.6
0.4
1.8
15.0
3.0
0.4
1 2
1.3
3
1.3
Specifications
Absolute Maximum Ratings
at Ta = 25˚C
Parameter
Gate-to-Drain Voltage
Gate Current
Drain Current
Allowable Power Dissipation
Channel Temperature
Storage Temperature
Symbol
VGDO
IG
ID
PD
Tj
Tstg
Conditions
3.0
3.8nom
1 : Source
2 : Gate
3 : Drain
SANYO : SPA
0.7
0.7
Ratings
–20
10
1
100
150
–55 to +150
Unit
V
mA
mA
mW
˚C
˚C
Electrical Characteristics
at Ta = 25˚C
Parameter
Gate-to-Drain Breakdown Voltage
Cutoff Voltage
Zero-Gate Votlage Drain Current
Forward Transfer Admittance
Input Capacitance
Reverse Transfer Capacitance
Symbol
V(BR)GDO IG=–100µA
VGS(off) VDS=5V, ID=1µA
IDSS
| yfs |
Ciss
Crss
VDS=5V, VGS=0
VDS=5V, VGS=0, f=1MHz
VDS=5V, VGS=0, f=1MHz
VDS=5V, VGS=0, f=1MHz
Conditions
Ratings
min
–20
–0.2
100*
0.4
1.2
4.1
0.88
–0.6
–1.5
800*
typ
max
Unit
V
V
µA
mS
pF
pF
* : The 2SK1578 is classified by I
DSS
as follows : (unit :
µA)
100
A
170
150
B
240
210
C
350
320
D
480
440
E
800
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.
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
2SK1578
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be expor ted without obtaining the expor t license from the authorities
concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of June, 1999. Specifications and information herein are subject to
change without notice.
PS No.4178–4/4
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