US1AF THRU US1MF
SURFACE MOUNT ULTRA FAST RECTIFIER
Reverse Voltage - 50 to 1000 Volts
SMAF
FEATURES
Cathode Band
Top View
0.106(2.70)
0.094(2.40)
Forward Current - 1.0 Ampere
The plastic package carries Underwriters Laboratory
Flammability Classification 94V-0
For surface mounted applications
Ultra fast switching for high efficiency
Low reverse leakage
Built-in strain relief,ideal for automated placement
High forward surge current capability
High temperature soldering guaranteed
260 C/10 seconds at terminals
Glass passivated chip junction
0.063(1.60)
0.051(1.30)
0.146(3.7)
0.130(3.3)
0.0091(0.23)
0.0071(0.18)
0.051(1.30)
0.043(1.10)
0.051(1.30)
0.039(1.0)
MECHANICAL DATA
0.193(4.90)
0.173(4.40)
Dimensions in inches and (millimeters)
Case: JEDEC SMAF molded plastic body over passivated chip
Terminals: Solder plated, solderable per MIL-STD-750,
Method 2026
Polarity: Color band denotes cathode end
Mounting Position: Any
Weight:0.0018 ounce, 0.064 grams
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified.
Single phase half-wave 60Hz,resistive or inductive load,for capacitive load current derate by 20%.
MDD Catalog Number
SYMBOLS US1AF US1BF US1DF US1GF US1JF US1KF US1MF
Marking code
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current
at TL=55 C
Peak forward surge current
8.3ms single half sine-wave superimposed on
rated load (JEDEC Method)
Maximum instantaneous forward voltage at 1.0A
Maximum DC reverse current
TA=25 C
at rated DC blocking voltage
TA=100 C
Maximum reverse recovery time
(NOTE 1)
Typical junction capacitance (NOTE 2)
Typical thermal resistance (NOTE 3)
Operating junction and storage temperature range
UNITS
MDD MDD
MDD
MDD
MDD
MDD MDD
US1AF US1BF US1DF US1GF US1JF US1KF US1MF
VRRM
VRMS
VDC
50
35
50
100
70
100
200
140
200
400
280
400
600
420
600
800
560
800
1000
700
1000
VOLTS
VOLTS
VOLTS
I(AV)
1.0
Amp
IFSM
30.0
Amps
VF
1.0
CJ
RθJA
TJ,TSTG
Note:1.Reverse recovery condition IF=0.5A,IR=1.0A,Irr=0.25A
2.Measured at 1MHz and applied reverse voltage of 4.0V D.C.
3.P.C.B. mounted with 0.2x0.2”(5.0x5.0mm) copper pad areas
1.7
5.0
50.0
IR
trr
1.4
50
µA
75
15.0
50.0
-50 to +150
Volts
ns
pF
C/W
C
FIG. 1- FORWARD CURRENT DERATING CURVE
1.0
0.8
0.6
Single Phase
Half Wave 60Hz
Resistive or
inductive Load
0.4
0.2
0
0
25
50
75
100
125
150
PEAK FORWARD SURGE CURRENT,
AMPERES
AVERAGE FORWARD RECTIFIED CURRENT,
AMPERES
RATINGS AND CHARACTERISTIC CURVES US1AF THRU US1MF
FIG. 2-MAXIMUM NON-REPETITIVE PEAK FORWARD
SURGE CURRENT
30
25
20
15
10
175
5.0
8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
1
10
AMBIENT TEMPERATURE, C
10
TJ=25 C
PULSE WIDTH=300 µs
1%DUTY CYCLE
1
0.1
US1AF-US1DF
US1GF
US1JF-US1MF
0.01
0.6
1.0
1.4
1.8
2.0
FIG. 4-TYPICAL REVERSE CHARACTERISTICS
INSTANTANEOUS REVERSE CURRENT,
MICROAMPERES
INSTANTANEOUS FORWARD
CURRENT,AMPERES
FIG. 3-TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
20
0.2
1,000
100
TJ=100 C
10
1
TJ=25 C
0.1
0.01
INSTANTANEOUS FORWARD VOLTAGE,
VOLTS
TJ=25 C
10
TRANSIENT THERMAL IMPEDANCE,
C/W
FIG. 5-TYPICAL JUNCTION CAPACITANCE
JUNCTION CAPACITANCE, pF
0
20
40
60
80
FIG. 6-TYPICAL TRANSIENT THERMAL IMPEDANCE
100
10
1
0.1
0.01
0.1
1
10
1
0.1
1.0
10
REVERSE VOLTAGE,VOLTS
100
PERCENT OF PEAK REVERSE VOLTAGE,%
200
100
100
NUMBER OF CYCLES AT 60 Hz
100
t,PULSE DURATION,sec.
The cruve graph is for reference only, can't be the basis for judgment(曲线图仅供参考)!
100
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