Fairchild Semiconductor KBU4M, KBU4K, KBU4J, KBU4D, KBU4B Datasheet

Discrete POWER & Signal

Technologies

KBU4A - KBU4M

Features

•High surge current capability.

•Reliable construction technique.

•Ideal for printed circuit board.

KBU

4.0 Ampere Silicon Bridge Rectifiers

									0.935(23.7)									0.280(7.1)
0.16(4.1)									0.895(22.7)					0.260(6.6)
		0.14(3.6)
														0.085(2.2)
										45°				0.065(1.7)
	0.70(17.8)									+
										+
	0.66(16.8)
0.0760(19.3)									~					0.455(11.3)
MAX							–			~ +
														0.405(10.3)

0.165(4.2)

0.150(3.8)

1.0(2.54)

MIN

											0.260(6.8)
0.220(5.6)										0.180(4.5)
0.180(4.6)							0.052(1.3)
							0.048(1.2)

Dimensions are in: inches (mm)

Absolute Maximum Ratings*

TA = 25°C unless otherwise noted

Symbol

Parameter

Value

Units

IO

Average Rectified Current

4.0

A

@ TA = 50° C

if(surge)

Peak Forward Surge Current

200

A

PD

Total Device Dissipation

6.6

W

Derate above 25° C

53

mW/° C

Rθ JA

Thermal Resistance, Junction to Ambient,** per leg

19

° C/W

Rθ JL

Thermal Resistance, Junction to Lead,** per leg

4.0

° C/W

Tstg

Storage Temperature Range

-55 to +150

° C

TJ

Operating Junction Temperature

-55 to +150

° C

*These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.

**Device mounted on PCB with 0.375 " (9.5 mm) lead length and 0.5 x 0.5" (13 x 13 mm) copper pads.

Electrical Characteristics

TA = 25°C unless otherwise noted

Parameter

Device

Units

4A

4B

4D

4G

4J

4K

4M

Peak Repetitive Reverse Voltage

50

100

200

400

600

800

1000

V

Maximum RMS Bridge Input Voltage

35

70

140

280

420

560

700

V

DC Reverse Voltage (Rated VR)

50

100

200

400

600

800

1000

V

Maximum Reverse Leakage,

°

5.0

A

total bridge @ rated VR TA = 25 C

500

°

A

TA = 100 C

Maximum Forward Voltage Drop,

per bridge

@ 4.0 A

1.0

V

KBU4M - KBU4A

1998 Fairchild Semiconductor Corporation

KBU4A-KBU4M, Rev. A

Silicon Bridge Rectifiers

(continued)

Typical Characteristics

Forward Current Derating Curve

	5
(A)	4
CURRENT	3
		SINGLE PHASE
FORWARD	2	HALF WAVE
		60HZ
		RESISTIVE OR
	1	INDUCTIVE LOAD
		.375" 9.0 mm LEAD
		LENGTHS
	0	50	100	150
	0

AMBIENT TEMPERATURE (º C)

Forward Characteristics

	100
(A)
CURRENT	10
FORWARD	1
				T = 25ºC
				JA
				Pulse Width = 300 S
				2% Duty Cycle
	0.1	0.7	0.8	0.9	1	1.1	1.2	1.3
	0.6

FORWARD VOLTAGE (V)

Non-Repetitive Surge Current

(A)	200
	175
CURRENT
	150
	125
SURGE	100
	75
FORWARD
	50
	25
	0	2	5	10	20	50	100
	1

NUMBER OF CYCLES AT 60Hz

Reverse Characteristics

	100
A)				T A= 100º C
(
CURRENT	10
REVERSE	1
				T A= 25º C
	0.1	20	40	60	80	100	120	140
	0

PERCENT OF RATED PEAK REVERSE VOLTAGE (%)

KBU4M - KBU4A

KBU4A-KBU4M, Rev. A