TRANS NPN HV CRT ISOWATT218FX

BU508AF

Manufacturer Part NumberBU508AF
DescriptionTRANS NPN HV CRT ISOWATT218FX
ManufacturerSTMicroelectronics
BU508AF datasheet
 


Specifications of BU508AF

Transistor TypeNPNCurrent - Collector (ic) (max)8A
Voltage - Collector Emitter Breakdown (max)700VVce Saturation (max) @ Ib, Ic1V @ 1.6A, 4.5A
Current - Collector Cutoff (max)200µADc Current Gain (hfe) (min) @ Ic, Vce10 @ 100mA, 5V
Power - Max50WMounting TypeThrough Hole
Package / CaseISOWATT218FXTransistor PolarityNPN
Collector Emitter Voltage V(br)ceo700VPower Dissipation Pd50W
Dc Collector Current8ADc Current Gain Hfe30
Operating Temperature Range-65°C To +150°CLead Free Status / RoHS StatusLead free / RoHS Compliant
Frequency - Transition-Other names497-8748-5
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Features
State-of-the-art technology:
– Diffused collector “Enhanced generation”
Stable performances versus operating
temperature variation
Low base-drive requirement
Tight h
range at operating collector current
FE
High ruggedness
Fully insulated power package U.L. compliant
Applications
Horizontal deflection output for CRT TV
Switch mode power supplies for CRT TV
Description
The BU508AF is manufactured using diffused
collector in planar technology adopting new and
enhanced high voltage structure for updated
performance to the horizontal deflection stage.
Table 1.
Device summary
Order code
Marking
BU508AF
BU508AF
August 2007
High voltage NPN power transistor for standard
Figure 1.
Package
ISOWATT218FX
Rev 2
BU508AF
definition CRT display
3
2
1
ISOWATT218FX
Internal schematic diagram
Packaging
Tube
www.st.com
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BU508AF Summary of contents

  • Page 1

    ... Applications ■ Horizontal deflection output for CRT TV ■ Switch mode power supplies for CRT TV Description The BU508AF is manufactured using diffused collector in planar technology adopting new and enhanced high voltage structure for updated performance to the horizontal deflection stage. Table 1. Device summary Order code ...

  • Page 2

    ... Content Content 1 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Electrical characteristics (curves 2.2 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2/11 BU508AF ...

  • Page 3

    ... BU508AF Electrical ratings 1 Table 2. Absolute maximum rating Symbol V Collector-emitter voltage (V CES V Collector-emitter voltage (I CEO V Collector-base voltage (I EBO I Collector current C I Collector peak current ( Base current B P Total dissipation at T TOT Insulation withstand voltage (RMS) from all three leads to V ins external heatsink ...

  • Page 4

    ... Fall time f 1. Pulsed: Pulse duration = 300 ms, duty cycle 1.5 % 4/11 Parameter Test conditions V = 1500V CE = 1500V 100mA -2.7V f BE(off 4.5µH BB(off) Min. Typ. Max. 0 125° 700 0.5A B(on) = 16KHz 2.5 h 0.2 BU508AF Unit µs µs ...

  • Page 5

    ... BU508AF 2.1 Electrical characteristics (curves) Figure 2. Safe operating area Figure 4. DC current gain Figure 6. Collector-emitter saturation voltage Electrical characteristics Figure 3. Derating curve Figure 5. DC current gain Figure 7. Base-emitter saturation voltage 5/11 ...

  • Page 6

    ... Electrical characteristics Figure 8. Output characteristics 6/11 BU508AF ...

  • Page 7

    ... BU508AF 2.2 Test circuits Figure 9. Power losses and inductive load switching Figure 10. Reverse biased safe operating area Electrical characteristics 7/11 ...

  • Page 8

    ... 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 trademark. ECOPACK specifications are available at: 8/11 www.st.com BU508AF ...

  • Page 9

    ... BU508AF Dim Dia ISOWATT218FX mechanical data mm. Min. Typ 5.30 2.80 3.10 1.80 0.80 0.65 1.80 10.30 5.45 15.30 9 22.80 26.30 43.20 4.30 24.30 14.60 1.80 3.80 3.40 Package mechanical data Max. 5.70 3.20 3.50 2.20 1.10 0.95 2.20 11.50 15.70 10.20 23 ...

  • Page 10

    ... Revision history 4 Revision history Table 5. Document revision history Date 02-Mar-2007 14-Aug-2007 10/11 Revision 1 Initial release Complete document, added all curves 2 (curves) BU508AF Changes (2.1: Electrical characteristics ...

  • Page 11

    ... BU508AF 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 any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...