Document
US1AF THRU US1MF
SURFACE MOUNT ULTRA FAST RECTIFIER
Reverse Voltage - 50 to 1000 Volts Forward Current - 1.0 Ampere
0.106(2.70) 0.094(2.40)
0.051(1.30) 0.043(1.10)
SMAF
Cathode Band Top View
0.063(1.60) 0.051(1.30)
0.146(3.7) 0.130(3.3)
0.0091(0.23) 0.0071(0.18)
FEATURES
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
0.051(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 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
SYMBOLS US1AF US1BF US1DF US1GF US1JF US1KF US1MF UNITS
VRRM VRMS VDC
50 35 50
100 200 400 600 800 1000 VOLTS 70 140 280 420 560 700 VOLTS 100 200 400 600 800 1000 VOLTS
I(AV) 1.0 Amp
IFSM
VF
IR trr CJ RθJA TJ,TSTG
30.0
1.0 50
1.4 5.0 50.0
15.0 50.0 -50 to +150
1.7 75
Amps
Volts µA
ns pF C/W C
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
RATINGS AND CHARACTERISTIC CURVES US1AF THRU US1MF
AVERAGE FORWARD RECTIFIED CURRENT, AMPERES
INSTANTANEOUS FORWARD CURRENT,AMPERES
FIG. 1- FORWARD CURRENT DERATING CURVE
1.0
0.8
0.6
0.4 Single Phase Half Wave 60Hz Resistive or inductive Load
0.2
0 0 25 50 75 100 125 150 175
AMBIENT TEMPERATURE, C
FIG. 3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS
20 10
TJ=25 C PULSE WIDTH=300 µs 1%DUTY CYCLE
1
0.1 US1AF-US1DF US1GF US1JF-US1MF
0.01 0.2 0.6 1.0 1.4 1.8 2.0
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
FIG. 5-TYPICAL JUNCTION CAPACITANCE
200 100 TJ=25 C
10
1 0.1
1.0
10 100
REVERSE VOLTAGE,VOLTS
TRANSIENT THERMAL IMPEDANCE, C/W
INSTANTANEOUS REVERSE CURRENT, MICROAMPERES
PEAK FORWARD SURGE CURRENT, AMPERES
FIG. 2-MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT
30
25
20
15
10 8.3ms SINGLE HALF SINE-WAVE (JEDEC Method)
5.0 1
10
NUMBER OF CYCLES AT 60 Hz
100
FIG. 4-TYPICAL REVERSE CHARACTERISTICS
1,000
100
TJ=100 C 10
1 TJ=25 C
0.1
0.01 0
20 40
60 80 100
PERCENT OF PEAK REVERSE VOLTAGE,%
FIG. 6-TYPICAL TRANSIENT THERMAL IMPEDANCE
100
10
1
0.1 0.01
0.1 1
10
t,PULSE DURATION,sec.
100
JUNCTION CAPACITANCE, pF
.