November 2007 Rev 1 1/9
9
BUX48
BUX48A
High voltage fast-switching NPN power transistors
Features
■NPN transistors
■High voltage capability
■High current capability
■Fast switching speed
Applications
■Switching mode power supplies
■Flyback and forward single transistor low power
converters
Description
The BUX48 and BUX48A are multi epitaxial mesa
NPN transistors mounted in TO-3 metal can.
They are intended for switching and industrial
applications for single and three-phase mains.
Figure 1. Internal schematic diagram
1
2
TO-3
www.st.com
Table 1. Device summary
Order code Marking Package Packaging
BUX48 BUX48 TO-3
tray
BUX48A BUX48A TO-3
Absolute maximum ratings BUX48 BUX48A
2/9
1 Absolute maximum ratings
Table 3. Thermal data
Table 2. Absolute maximum ratings
Symbol Parameter
Value Unit
BUX48 BUX48A Unit
VCER Collector-emitter voltage (RBE = 10Ω) 850 1000 V
VCES Collector-emitter voltage (VBE = 0) 850 1000 V
VCEO Collector-emitter voltage (IB = 0) 400 450 V
VEBO Emitter-base voltage (IC = 0) 7 V
ICCollector current 15 A
ICM Collector peak current 30 A
ICP Collector peak current non repetitive (tp < 20 µs) 55 A
IBBase current 4 A
IBM Base peak current non repetitive (tp < 20 µs) 20 A
PTOT Total dissipation at Tc = 25 °C 175 W
Tstg Storage temperature -65 to 200 °C
TJMax. operating junction temperature 200 °C
Symbol Parameter Value Unit
Rthj-case Thermal resistance junction-case __max 1 °C/W
BUX48 BUX48A Electrical characteristics
3/9
2 Electrical characteristics
(Tcase = 25°C; unless otherwise specified)
Table 4. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
ICES
Collector cut-off current
(VBE = 0)
VCE = rated VCES
VCE = rated VCES, Tc = 125°C
200
2
µA
mA
ICER
Collector cut-off current
(RBE = 10Ω)
VCE = rated VCER
VCE = rated VCER, Tc = 125°C
500
4
µA
mA
IEBO
Emitter cut-off current
(IC = 0) VEB = 5 V 1mA
VCEO(sus)(1)
Collector-emitter
sustaining voltage
(IB = 0)
IC = 200 mA
for BUX48
for BUX48A
400
450
V
V
VEBO
Emitter-base voltage
(IC = 0) IE = 50 mA 730V
VCE(sat)(1) Collector-emitter
saturation voltage
for BUX48
IC = 10 A IB = 2 A
IC = 15 A IB = 4 A
IC = 15 A IB = 3 A
for BUX48A
IC = 8 A IB = 1.6 A
IC = 12 A IB = 2.4 A
1.5
3.5
5
1.5
5
V
V
V
V
V
VBE(sat)(1) Base-emitter saturation
voltage
for BUX48
IC = 10 A IB = 2 A
for BUX48A
IC = 8 A IB = 1.6 A
1.6
1.6
V
V
Electrical characteristics BUX48 BUX48A
4/9
2.1 Test circuits
Figure 2. Resistive load switching test circuit
ton
ts
tf
Resistive load
Tu r n- o n t i m e
Storage time
Fall time
for BUX48
VCC = 150 V IC = 10 A
IB1 = -IB2 = 2 A
for BUX48A
VCC = 150 V IC = 8 A
IB1 = -IB2 = 1.6 A
1
3
0.8
µs
µs
µs
ts
tf
Inductive load
Storage time
Fall time
for BUX48
VCC = 300 V IC = 10 A
VBE = -5 V IB1 = 2 A
LB = 3 µH
2.7
0.16
µs
µs
ts
tf
Inductive load
Storage time
Fall time
for BUX48
VCC = 300 V IC = 10 A
VBE = -5 V IB1 = 2 A
LB = 3 µH TC = 125 oC
5
0.4
µs
µs
ts
tf
Inductive load
Storage time
Fall time
for BUX48A
VCC = 300 V IC = 8 A
VBE = -5 V IB1 = 1.6 A
LB = 3 µH
3
0.13
µs
µs
ts
tf
Inductive load
Storage time
Fall time
for BUX48A
VCC = 300 V IC = 8 A
VBE = -5 V IB1 = 1.6 A
LB = 3 µH TC = 125 oC
5
0.4
µs
µs
1. Pulsed duration = 300 ms, duty cycle ≤ 2%.
Table 4. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
1) Fast electronic switch
2) Non-inductive resistor
BUX48 BUX48A Electrical characteristics
5/9
Figure 3. Inductive load switching test circuit
1) Fast electronic switch
2) Non-inductive resistor
3) Fast recovery rectifier
Package mechanical data BUX48 BUX48A
6/9
3 Package mechanical data
In order to meet environmental requirements, ST offers these devices in
ECOPACK® packages. These packages have a Lead-free second level
interconnect . The category of second level interconnect is marked on the package
and on the inner box label, in compliance with JEDEC Standard JESD97. The
maximum ratings related to soldering conditions are also marked on the inner box
label. ECOPACK is an ST trademark. ECOPACK specifications are available at:
www.st.com
BUX48 BUX48A Package mechanical data
7/9
DIM.
mm.
min. typ max.
A11.00 13.10
B0.97 1.15
C 1.50 1.65
D8.328.92
E19.00 20.00
G 10.70 11.10
N 16.50 17.20
P 25.00 26.00
R 4.00 4.09
U38.50 39.30
V30.00 30.30
TO-3 mechanical data
Revision history BUX48 BUX48A
8/9
4 Revision history
Table 5. Document revision history
Date Revision Changes
13-Nov-2007 1 Initial Release
BUX48 BUX48A
9/9
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at an
y
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, an
y
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2007 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
