
®
HIGH VOLTAGE NPN POWER TRANSISTOR
■ REVERSE PINS OUT Vs STANDARD
IPAK/DPAK PACKAG E
■ HIGH VOLTAGE CAPABILITY
■ HIGH DC CURRENT GAIN
■ THROUGH-HO LE IPAK (TO -251) POW E R
PACKAGE IN TU BE (SUFFIX "-1")
■ SURFACE-MOUNTING DPAK (TO-252)
POWER PACKAGE IN TAPE & REEL
(SUFFIX "T4")
BUXD87
3
2
1
3
1
APPLICATIONS:
■ SWITCH MODE POWER SUPPLI ES
■ GENERAL PURPOSE SWITCHING
IPAK DPAK
TO-251 TO-252
(Suffix "-1") (Suffix "T4")
DESCRIPTION
The BUXD87 is manufactured us ing High Voltage
Multi Epitaxial Planar technology for high
switching speeds and high voltage withstand
capability.
INTER NAL SCH E M ATI C DIAG RA M
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
I
I
P
T
Collector-Emitter Voltage (VBE = -1.5V) 1000 V
CEV
Collector-Emitter Voltage (IB = 0) 450 V
CEO
Emitter-Base Voltage (IC = 0) 5 V
EBO
Collector Current 0.5 A
I
C
Collector Peak Current (tp < 5 ms) 1 A
CM
I
Base Current 0.3 A
B
Base Peak Current (tp < 5 ms) 0.6 A
BM
Total Dissipation at Tc = 25 oC20W
tot
Storage Temperature -65 to 150
stg
Max. Operating Junction Temperature 150
T
j
o
C
o
C
April 1999
1/6

BUXD87
THERMAL DATA
R
thj-case
R
thj-amb
Thermal Resistance Junction-case Max
Thermal Resistance Junction-ambient Max
6.25
100
o
C/W
o
C/W
ELECTRICAL CHARACTERISTICS (T
= 25 oC unless otherwise specified)
case
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
CEV
I
EBO
V
CEO(sus)
Collector Cut-off
Current (V
= -1.5V)
BE
Emitter Cut-off Current
(I
= 0)
C
Collector-Emitter
= 1000 V
V
CE
V
= 1000 V Tj = 125 oC
CE
= 5 V 1 mA
V
EB
100
1
IC = 100 mA 450 V
Sustaining Voltage
V
BEO
Collector-Base
IC = 10 mA 5 V
Sustaining Voltage
V
∗ Collector-Emitter
CE(sat)
Saturation Voltage
V
∗ Base-Emitter
BE(sat)
IC = 0.1 A IB = 0.01 A
I
= 0.2 A IB = 0.02 A
C
0.8
1
IC = 0.2 A IB = 0.02 A 1 V
Saturation Voltage
h
∗ DC Current Gain IC = 50 mA VCE = 5 V
FE
f
Transition Frequency IC = 50 mA VCE = 10 V f=1MHz 20 MHz
T
RESISTIVE LOAD
t
∗ Pulsed: Pulse duration = 300 µs, duty cycle 1.5 %
s
t
f
Storage Time
Fall Time
I
= 40 mA VCE = 5 V 12
C
VCC = 250 V IC = 200 mA
I
= 40 mA IB2= -80 mA
B1
= 20 µs
t
p
50
4.5
0.5
µA
mA
V
V
µs
µs
Safe Operating Are a Derating Curves
2/6

BUXD87
DC Current Gain
Collector Emitter Saturation Voltage
DC Current Gain
Base Emitter Sat uration Volt age
Reverse B iased SOA
3/6

BUXD87
TO-251 (IPAK) MECHANICAL DATA
DIM.
A 2.20 2.40 0.087 0.094
A1 0.90 1.10 0.035 0.043
A3 0.70 1.30 0.028 0.051
B 0.64 0.90 0.025 0.035
B2 5.20 5.40 0.204 0.213
B3 0.85 0.033
B5 0.30 0.012
B6 0.95 0.037
C 0.45 0.60 0.018 0.024
C2 0.48 0.60 0.019 0.024
D 6.00 6.20 0.237 0.244
E 6.40 6.60 0.252 0.260
G 4.40 4.60 0.173 0.181
H 15.90 16.30 0.626 0.642
L 9.00 9.40 0.354 0.370
L1 0.80 1.20 0.031 0.047
L2 0.80 1.00 0.031 0.039
V1 10
MIN. TYP. MAX. MIN. TYP. MAX.
mm inch
o
10
o
4/6
P032N_E

TO-252 (DPAK) MECHANICAL DATA
BUXD87
DIM.
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 2.20 2.40 0.087 0.094
A1 0.90 1.10 0.035 0.043
A2 0.03 0.23 0.001 0.009
B 0.64 0.90 0.025 0.035
B2 5.20 5.40 0.204 0.213
C 0.45 0.60 0.018 0.024
C2 0.48 0.60 0.019 0.024
D 6.00 6.20 0.236 0.244
E 6.40 6.60 0.252 0.260
G 4.40 4.60 0.173 0.181
H 9.35 10.10 0.368 0.398
L2 0.8 0.031
L4 0.60 1.00 0.024 0.039
V2 0
o
o
8
o
0
0
o
P032P_B
5/6

BUXD87
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such inform ation nor for any infringe ment o f patents or other rig hts o f third par ties which ma y resul t from i ts use. N o li cen se is
granted by implicatio n or otherwise under an y patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical compo nents in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a trademark of STMicroelectronics
© 1999 STMicroelectro nics – Printed in Italy – All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
http://www.st.com
.
6/6