
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquaters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
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.
NPN Epitaxial Planar Silicon Transistor
Low-Frequency General-Purpose Amplifier,
Applications (High h
FE
)
Ordering number:EN3484
2SC4705
Applications
 · Low-frequency general-purpose amplifier, drivers, 
muting circuits.
Features
 · High DC current gain (hFE=800 to 3200).
 · Low collector-to-emitter saturation voltage : 
V
 · High V
CE(sat)
≤0.5V max.
 : V
EBO
EBO
≥15V.
 · Small size making it easy to provide high-density, 
hybrid ICs.
Specifications
Absolute Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatloVesaB-ot-rotcelloCV
egatloVrettimE-ot-rotcelloCV
egatloVesaB-ot-rettimEV
tnerruCrotcelloCI
)esluP(tnerruCrotcelloCI
tnerruCesaBI
noitapissiDrotcelloCP
erutarepmeTnoitcnuJjT 051
erutarepmeTegarotSgtsT 051+ot55–
OBC 
OEC 
OBE
C
PC
B
C
Package Dimensions
unit:mm
2038A
[2SC4705]
1.6
2.5
0.4
2
mm052(draobcimarecnodetnuoM
× )mm8.03.1W
0.5
3
2
1.5
3.0
0.75
1.0
1
4.25max
1.5
0.4
1 : Base 
2 : Collector 
3 : Emitter 
SANYO : PCP 
(Bottom view)
06V 
05V 
51V 
002Am 
003Am 
04Am
˚C 
˚C
Electrical Characteristics at Ta = 25˚C
retemaraPlobmySsnoitidnoC
tnerruCffotuCrotcelloCI
tnerruCffotuCrettimEI
niaGtnerruCCD
tcudorPhtdiwdnaB-niaGf
ecnaticapaCtuptuOC
h
V
OBC
V
OBE
V
EF
V
T
V
bo
I,V04=
BC 
BE 
EC 
EC 
BC
0=1.0Aµ
E
I,V01=
0=1.0Aµ
C
I,V5=
Am001=
C
I,V01=
Am01=
C
zHM1=f,V01=
Marking :CP
12099HA (KT)/7190MH, TA (KOTO) No.3484–1/3
nimpytxam
00800510023
sgnitaR
052zHM
0.4Fp
tinU
 

2SC4705
retemaraPlobmySsnoitidnoC
egatloVnoitarutaSrettimE-ot-rotcelloCV
egatloVnoitarutaSrettimE-ot-esaBV
egatloVnwodkaerBesaB-ot-rotcelloCV
egatloVnwodkaerBrettimE-ot-rotcelloCV
egatloVnwodkaerBesaB-ot-rettimEV
I
)tas(EC
C
I
C
)tas(EB
I
OBC)RB(
C
I
OEC)RB(
C
I
OBE)RB(
E
I,Am001=
Am2=
B
I,Am001=
Am2=
B
I,Aµ01=
0=06V
E
R,Am1=
=∞ 05V
EB
I,Aµ01=
0=51V
C
sgnitaR
nimpytxam
21.05.0V
58.02.1V
tinU
No.3484–2/3
 

2SC4705
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 exported without obtaining the export 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 January, 1999. Specifications and information herein are subject 
to change without notice.
PS No.3484–3/3