USHA BU508A Datasheet

HORIZONTAL DEFLECTION TRANSISTOR

NPN BU508A

8A 1500V

Technical Data

…designed for use in large screen color deflection circuits.

F Collector-Emitter Voltage-VCES=1500Vdc
F Low Thermal Resistance 1¼C/W increased Reliability

F TO-218 Package for Low Cost Mounting
F Switching Times with Inductive Loads,

Tf=0.5us(Typ)@IC=4.5A

MAXIMUM RATINGS

Rating Symbol Value Unit

Collector- Emitter Voltage V
Collector- Emitter Voltage V

Emitter Base Voltage V
Collector Current – Continuous
_Peak(1)
Base Current – continuous

-- Peak(1)

Total Power Dissipation @ TC = 25°C

Derate above 25°C
Operating and Storage junction

Temperature Range

I
I

CM

I

B

IBM
PD 125

Tj,Tstg -65 to +150 °C

THERMAL CHARACTERISTICS

Characteristic Symbol Max. Unit

Thermal resistance junction to case R

C

CEO

CES

EB

thjc

700 Vdc

1500 Vdc

5 Vdc
8

15

4

6

1

1.0 °C/W

Adc
Adc

Watts

W/°C

ELECTRICAL CHARACTERISTICS :[ Tc = 25 °C unless otherwise noted ]

CE

=5 Vdc, ftest=1.0 MHz ]

Characteristic Symbol Min Typ Max Unit

* Off Characteristics :

Collector–Emitter Sustaining Voltage (1)
[ Ic =100 mAdc, IB = 0 ]
Collector Cutoff Current
[ VCE = 1500 Vdc, V

BE

= 0 ]

Emitter Base Leakage
[ VEB = 6V, Ic = 0 ]

* On Characteristics (1):

DC Current Gain
[ Ic = 2.0 Adc , VCE = 4.0 Vdc ]

Collector-Emitter Saturation Voltage
[ Ic = 4.5 Adc , IB = 2Adc )

Base-Emitter Saturation Voltage
[ Ic = 4.5 Adc , IB = 2Adc ]

V

CEO(sus)

I

I

EBO

h

V

CE(sat)

V

BE(sat)

CES

FE

700 Vdc

0.1 mAdc

10 mAdc

2.25

1 Vdc

1.3 Vdc

Dynamic Characteristics :

Current Gain – Bandwidth Product
[ Ic = 0.1Adc,V
Output Capacitance
(VCB=10Vdc,IE=0,f=0.1MHz)

SWITCHING CHARACTERISTICS

Fall Time
(IC=4.5Adc,IB1=1.8Adc,LB=10µH )

(1) Pulse Test : Pulse Width =5ms , Duty Cycle < 10.0%

C

f

tf

ts

T

OB

--- 7 -- MHz

-- 125 -- pF

--- 0.5 --- µs

8 µs