©2001 Fairchild Semiconductor Corporation Rev. A1, June 2001
BD157/158/159
NPN Epitxial Silicon Transistor
Absolute Maximum Ratings TC=25°C unless otherwise noted
Electrical Characteristics TC=25°C unless otherwise noted
* Pulse Test: PW=300µs, duty Cycle=1.5% Pulsed
Symbol Parameter Value Units
VCBO Collector-Base Voltage : BD157
: BD158
: BD159
275
325
375
V
V
V
VCEO Collector-Emitter Voltage : BD157
: BD158
: BD159
250
300
350
V
V
V
VEBO Emitter-Base Voltage 5 V
IC Collector Current (DC) 0.5 A
ICP *Collector Current (Pulse) 1.0 A
IB Base Current 0.25 A
PC Collector Dissipation (TC=25°C) 20 W
TJ Junction Temperature 50 °C
TSTG Storage Temperature - 65 ~ 150 °C
Symbol Parameter Test Co ndition Min. Typ. Max. Units
BVCEO *Collector-Emitter Br eakdown Voltage
: BD157
: BD158
: BD159
IC = 1mA, IB = 0 250
300
350
V
V
V
ICBO Collector Cut-off Current : BD157
: BD158
: BD159
VCB = 275V, IE = 0
VCB = 325V, IE = 0
VCB = 375V, IE = 0
100
100
100
µA
µA
µA
IEBO Emitter C ut- o ff C ur re n t VEB = 5V, IC = 0 100 µA
hFE * DC Current Gain VCE = 10V, IC = 50mA 30 240
BD157/158/159
Low Power Fast Switching Output Stages
• For T.V Radio Audio Output Amplifiers
1TO-126
1. Emitter 2.Collector 3.Base
©2001 Fairchild Semiconductor Corporation
BD157/158/159
Rev. A1, June 2001
Typical Characteristics
Figure 1. DC current Gain Figure 2. Collector-Emitter Saturation Voltage
Figure 3. Safe Operating Area Figure 4. Power Derating
1E-4 1E-3 0.01 0.1 1
1
10
100
1000
0.0001
VCE = 10V
0.001
hFE, DC CURRENT GAIN
IC[A], COLLECTOR CURRENT
1E-4 1E-3 0.01 0.1 1
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0 IC = 10 IB
VCE(sat)[V], SATURATION VOLTAGE
IC[A], COLLECTOR CURRENT
1 10 100 1000
1E-3
0.01
0.1
1
10
10µs
BD157
BD158
BD159
100µs
500µs
1msDC
IC MAX. (Pulsed)
IC[A], COLLECTOR CURRENT
VCE[V], COLLECTOR-EMITTER VOLTAGE
0 25 50 75 100 125 150 175
0
5
10
15
20
25
PC[W], POWER DISSIPATION
TC[oC], CASE TEMPERATURE
Package Demensions
©2001 Fairchild Semiconductor Corporation Rev. A1, June 2001
BD157/158/159
Dimensions in Millimeters
3.25 ±0.20
8.00 ±0.30
ø3.20 ±0.10
0.75 ±0.10
#1
0.75 ±0.10
2.28TYP
[2.28±0.20] 2.28TYP
[2.28±0.20]
1.60 ±0.10
11.00 ±0.20
3.90 ±0.10
14.20MAX
16.10 ±0.20
13.06 ±0.30
1.75 ±0.20
(0.50)
(1.00)
0.50 +0.10
–0.05
TO-126
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR
CORPORATION.
As used herein:
©2001 Fairchild Semiconductor Corporation Rev. H3
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not
intended to be an exhaustive list of all such trademarks.
1. Life support devices or systems are devic es or syst em s
which, (a) ar e intended for surgical implant into the body,
or (b) support or sustain life, or (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information Formative or In
Design This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
Preliminary First Production This datasheet contains preliminary data, and
supplementary data will be published at a later date.
Fairchild Semiconduct or reserv es the right to make
changes at any time without notice in order to improve
design.
No Identification Needed Full Production This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
Obsolete Not In Production This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor .
The datasheet is printed for reference information only.
ACEx™
Bottomless™
CoolFET™
CROSSVOLT™
DenseTrench™
DOME™
EcoSPARK™
E2CMOS™
EnSigna™
FACT™
FACT Quiet Series™
FAST®
FASTr™
FRFET™
GlobalOptoisolator™
GTO™
HiSeC™
ISOPLANAR™
LittleFET™
MicroFET™
MICROWIRE™
OPTOLOGIC™
OPTOPLANAR™
PACMAN™
POP™
Power247™
PowerTrench®
QFET™
QS™
QT Optoelectronics™
Quiet Series™
SLIENT SWITCHER®
SMART START™
STAR*POWER™
Stealth™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SyncFET™
TruTranslation™
TinyLogic™
UHC™
UltraFET®
VCX™
STAR*POWE R is used under license
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Amplifiers
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* 1,000 piece Budgetary Pricing
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