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Motorola Bipolar Power Transistor Device Data

Designer's™ Data Sheet

SWITCHMODE™

NPN Bipolar Power Transistor

For Switching Power Supply Applications

The BUL44/BUL44F have an applications specific state–of–the–art die designed

for use in 220 V line operated Switchmode Power supplies and electronic light

ballasts. These high voltage/high speed transistors offer the following:

• Improved Efficiency Due to Low Base Drive Requirements:

— High and Flat DC Current Gain hFE

— Fast Switching

— No Coil Required in Base Circuit for Turn–Off (No Current Tail)

• Full Characterization at 125°C

• Tight Parametric Distributions are Consistent Lot–to–Lot

• Two Package Choices: Standard TO–220 or Isolated TO–220

• BUL44F, Case 221D, is UL Recognized to 3500 VRMS: File #E69369

MAXIMUM RATINGS

Rating

Symbol

BUL44

BUL44F

Unit

Collector–Emitter Sustaining Voltage

VCEO

400

Vdc

Collector–Emitter Breakdown Voltage

VCES

700

Vdc

Emitter–Base Voltage

VEBO

9.0

Vdc

Collector Current — Continuous

— Peak(1)

IC

ICM

2.0

5.0

Adc

Base Current — Continuous

— Peak(1)

IB

IBM

1.0

2.0

Adc

RMS Isolated Voltage(2)

Test No. 1 Per Fig. 22a

(for 1 sec, R.H. < 30%,

Test No. 2 Per Fig. 22b

TC = 25°C)

Test No. 3 Per Fig. 22c

VISOL

—

—

—

4500

3500

1500

Volts

Total Device Dissipation

(TC = 25°C)

Derate above 25

°C

PD

50

0.4

25

0.2

Watts

W/

°C

Operating and Storage Temperature

TJ, Tstg

– 65 to 150

°C

THERMAL CHARACTERISTICS

Rating

Symbol

BUL44

BUL44F

Unit

Thermal Resistance — Junction to Case

— Junction to Ambient

R

θJC

R

θJA

2.5

62.5

5.0

62.5

°C/W

Maximum Lead Temperature for Soldering

Purposes:

1/8

″ from Case for 5 Seconds

TL

260

°C

Characteristic

Symbol

Min

Typ

Max

Unit

OFF CHARACTERISTICS

Collector–Emitter Sustaining Voltage (IC = 100 mA, L = 25 mH)

VCEO(sus)

400

—

—

Vdc

Collector Cutoff Current (VCE = Rated VCEO, IB = 0)

ICEO

—

—

100

µAdc

Collector Cutoff Current (VCE = Rated VCES, VEB = 0)

(TC = 125°C)

(TC = 125°C)

ICES

—

—

—

—

—

—

100

500

100

µAdc

Emitter Cutoff Current (VEB = 9.0 Vdc, IC = 0)

IEBO

—

—

100

µAdc

(1) Pulse Test: Pulse Width = 5.0 ms, Duty Cycle

≤ 10%.

(continued)

(2) Proper strike and creepage distance must be provided.

Designer’s and SWITCHMODE are trademarks of Motorola, Inc.

Designer’s Data for “Worst Case” Conditions — The Designer’s Data Sheet permits the design of most circuits entirely from the information presented. SOA Limit

curves — representing boundaries on device characteristics — are given to facilitate “worst case” design.

Preferred devices are Motorola recommended choices for future use and best overall value.

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Order this document

by BUL44/D

BUL44

BUL44F

POWER TRANSISTOR

2.0 AMPERES

700 VOLTS

40 and 100 WATTS

*Motorola Preferred Device

BUL44

CASE 221A–06

TO–220AB

BUL44F

CASE 221D–02

ISOLATED TO–220 TYPE

UL RECOGNIZED

*

*

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