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Ordering number:1787A
PNP/NPN Epitaxial Planar Silicon Transistors
2SB1121/2SD1621
High-Current Driver Applications
Applications
· Voltage regulators, relay drivers, lamp drivers,
electrical equipment.
Package Dimensions
unit:mm
2038
Features
· Adoption of FBET, MBIT processes.
· Low collector-to-emitter saturation voltage.
· Large current capacity and wide ASO.
· Fast switching speed.
· Very small size making it easy to provide high-
density, small-sized hybrid IC’s.
[2SB1121/2SD1621]
E : Emitter
C : Collector
B : Base
( ) : 2SB1121
Specifications
SANYO : PCP
(Bottom view)
Absolute Maximum Ratings at Ta = 25˚C
Parameter
Collector-to-Base Voltage
Collector-to-Emitter Voltage
Emitter-to-Base Voltage
Collector Current
Collector Current (Pulse)
Collector Dissipation
Junction Temperature
Storage Temperature
Symbol
VCBO
VCEO
VEBO
IC
ICP
PC
Tj
Tstg
Conditions
Mounted on ceramic board (250mm2×0.8mm)
Ratings
(–)30
(–)25
(–)6
(–)2
(–)5
500
1.3
150
–55 to +150
Unit
V
V
V
A
A
mW
W
˚C
˚C
Electrical Characteristics at Ta = 25˚C
Parameter
Symbol
Conditions
Collector Cutoff Current
Emitter Cutoff Current
DC Current Gain
Gain-Bandwidth Product
ICBO
IEBO
hFE1
hFE2
fT
VCB=(–)20V, IE=0
VEB=(–)4V, IC=0
VCE=(–)2V, IC=(–)100mA
VCE=(–)2V, IC=(–)1.5A
VCE=(–)10V, IC=(–)50mA
* ; The 2SB1121/2SD1621 are classified by 100mA hFE as follows :
100 R 200 140 S 280 200 T 400 280 U 560
Ratings
min typ
100*
65
150
max
(–)0.1
(–)0.1
560*
Unit
µA
µA
MHz
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 Bussiness Headquaters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
92098HA (KT)/4107KI/3045MW, TS No.1787–1/4

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Parameter
Collector-to-Emitter Saturation Voltage
Base-to-Emitter Saturation Voltage
Collector-to-Base Breakdown Voltage
Collector-to-Emitter Breakdown Voltage
Emitter-to-Base Breakdown Voltage
Output Capacitance
Turn-ON Time
Storage Time
Fall Time
Switching Time Test Circuit
2SB1121/2SD1621
Symbol
Conditions
VCE(sat) IC=(–)1.5A, IB=(–)75mA
VBE(sat)
V(BR)CBO
V(BR)CEO
V(BR)EBO
Cob
IC=(–)1.5A, IB=(–)75mA
IC=(–)10µA, IE=0
IC=(–)1mA, RBE=
IE=(–)10µA, IC=0
VCB=(–)10V, f=1MHz
ton See specified Test Circuit.
tstg See specified Test Circuit.
tf See specified Test Circuit.
Ratings
min typ
0.18
(–0.35)
(–)0.85
(–)30
(–)25
(–)6
19
(32)
60
(60)
500
(350)
25
(25)
max
0.4
(–0.6)
(–)1.2
Unit
V
V
V
V
V
V
pF
pF
ns
ns
ns
ns
ns
ns
No.1787–2/4

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2SB1121/2SD1621
No.1787–3/4

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2SB1121/2SD1621
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 and all SANYO products described or contained herein fall under strategic
products (including services) controlled under the Foreign Exchange and Foreign Trade Control Law of
Japan, such products must not be exported without obtaining export license from the Ministry of
International Trade and Industry 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 September, 1998. Specifications and information herein are
subject to change without notice.
PS No.1787–4/4