Frontier Electronics Corp.
667 E. COCHRAN STREET, SIMI VALLEY, CA 93065
TEL: (805) 522-9998
FAX: (805) 522-9989
E-mail:
frontiersales@frontierusa.com
Web:
http://www.frontierusa.com
8A ULTRA FAST RECOVERY SURFACE MOUNT RECTIFIER
UK8A-LFR
FEATURES
LOW PROFILE PACKAGE
PLASTIC PACKAGE HAS UNDERWRITERS LABORATORY
94V-0
IDEAL FOR SURFACE MOUNTED APPLICATION
GLASS PASSIVATED CHIP JUNCTION
BUILT-IN STRAIN RELIEF DESIGN
ULTRA FAST RECOVERY TIME FOR HIGH EFFICIENT
HIGH TEMPERATURE SOLDERING: 250°C/10 SECONDS AT
TERMINALS
ROHS
MECHANICAL DATA
CASE: TSMC, DIMENSIONS IN INCHES AND (MILLIMETERS)
TERMINALS: SOLDER PLATED
POLARITY: INDICATED BY CATHODE BAND
WEIGHT: 0.10 GRAMS
CATHODE
.012(0.3) Typ
SOLDERING PAD
.320(8.12)
REF
.189(4.8)
.165(4.2)
.283(7.2)
.260(6.6)
.158(4.02)
MIN
.06(1.52)
MIN
.185(4.69)
MAX
.244(6.2)
.228(5.8)
.098(2.5)
.075(1.9)
.04(1.0) Typ
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS RATINGS AT 25°C AMBIENT TEMPERATURE UNLESS OTHERWISE SPECIFIED
SINGLE PHASE, HALF WAVE, 60 HZ, RESISTIVE OR INDUCTIVE LOAD. FOR CAPACITIVE LOAD, DERATE CURRENT BY 20%
RATINGS
MAXIMUM RECURRENT PEAK REVERSE VOLTAGE
MAXIMUM RMS VOLTAGE
MAXIMUM DC BLOCKING VOLTAGE
MAXIMUM AVERAGE FORWARD RECTIFIED CURRENT
AT T
L
=75°C
PEAK FORWARD SURGE CURRENT, 8.3ms SINGLE HALF
SINE-WAVE SUPERIMPOSED ON RATED LOAD
TYPICAL JUNCTION CAPACITANCE (NOTE 1)
STORAGE TEMPERATURE RANGE
OPERATING TEMPERATURE RANGE
SYMBOL
V
RRM
V
RMS
V
DC
I
O
I
FSM
C
J
T
STG
T
OP
UK8A-LFR
50
35
50
8.0
120
75
-55 TO + 150
-55 TO + 150
UNITS
V
V
V
A
A
PF
℃
℃
ELECTRICAL CHARACTERISTICS (A
T
T
A
=25°C UNLESS OTHERWISE NOTED)
CHARACTERISTICS
SYMBOL
UK8A-LFR
0.95
5
250
50
UK8A
UNITS
V
μA
μA
nS
MAXIMUM FORWARD VOLTAGE AT I
O
DC
V
F
MAXIMUM DC REVERSE CURRENT AT TA=25ºC
I
R
MAXIMUM DC REVERSE CURRENT AT TA=125°C
I
R
MAXIMUM REVERSE RECOVERY TIME (NOTE 3)
T
RR
MARKING
NOTES:
1. MEASURED AT 1 MHZ AND APPLIED REVERSE VOLTAGE 0F 4.0 VOLTS
2. REVERSE RECOVERY TEST CONDITIONS: I
F
=0.5A, I
R
=1.0A, I
RR
=0.25A
UK8A-LFR
Page: 1
RATINGS AND CHARACTERISTIC CURVE UK8A-LFR
FIG. 1-TEST CIRCUIT DIAGRAM AND REVERSE
RECOVERY TIME CHARACTERISTIC
50Ω
NO INDUCTIVE
10Ω
NO INDUCTIVE
Trr
(-)
D.U.T.
(+)
25 V
dc
(approx)
PULSE
GENERATOR
( NOTE 2 )
1Ω
NON
INDUCTIVE
OSCILLOSCOPE
( NOTE 1 )
FIG. 2-TYPICAL FORWARD
CURRENT DERATING CURVE
+0.5A
AVERAGE FORWARD
CURRENT (A)
8.0
SINGLE PHASE
HALF WAVE 60Hz
RESISTIVE OR
INDUCTIVE LOAD
0
-0.25A
(-)
(+)
4.0
NOTE: 1. RISE TIME=7ns MAX. INPUT
IMPEDANCE=1 MOhms 22PF
2. RISE TIME =10ns MAX. SOURCE
IMPEDANCE=50 OHMS
-1.0A
1cm
P.C.B MOUNTED ON
0.3×0.3”(8.0×8.0mm)
COPPER PAD AREAS
0
0 20 40 60 80 100 120 140 160 180 200
LEAD TEMPERATURE (ºC)
SET TIME BASE
FOR 10/20 ns/cm
FIG. 3-TYPICAL REVERSE CHARACTERISTICS
INSTANTANEOUS REVERSE CURRENT (uA)
FIG. 4-TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
INSTANTANEOUS FORWARD CURRENT (A)
100
10
10
T
J
=125
o
C
T
J
=80
o
C
T
J
=25
o
C
1.0
1.0
0.1
.1
.01
.01
0
20
40
60
80 100 120 140
PERCENT OF RATED PEAK REVERSE VOLTAGE (%)
.001
.2 .4
.6
.8 1.0 1.2 1.4 1.6 1.8 2.0
INSTANTANEOUS FORWARD VOLTAGE (V)
FIG. 6-TYPICAL JUNCTION CAPACITANCE
FIG. 5-MAXIMUM NON-REPETITIVE
FORWARD SURGE CURRENT
PEAK FORWARD SURGE CURRENT (A)
200
JUNCTION CAPACITANCE (pF)
120
96
72
48
24
0
0
10
100
8.3 ms Single Half Sine Wave
(JEDEC Method)
100
40
20
10
6
4
2
T
J
=25
o
C
NUMBER OF CYCLES AT 60H
Z
1
.1 .2
.4
1.0
2
4
10 20 40
100
REVERSE VOLTAGE (V)
UK8A-LFR
Page: 2
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