US1AF THRU US1MF
Reverse Voltage - 50 to 1000 Volts
Forward Current - 1.0 Ampere
SURFACE MOUNT ULTRA FAST RECTIFIER
Features
SMAF
The plastic package carries Underwriters Laboratory
Flammability Classification 94V-0
For surface mounted applications
0.106(2.70)
0.094(2.40)
0.063 (1.60)
0.051 (1.30)
Ultra fast switching for high efficiency
Low reverse leakage
0.146(3.70)
0.130(3.30)
Built-in strain relief,ideal for automated placement
High forward surge current capability
High temperature soldering guaranteed
250 °C/10 seconds at terminals
0.047(1.20)
0.035(0.90)
0.008(0.20)
0.005(0.12)
0.047(1.20)
0.031(0.80)
Mechanical Data
0.193(4.90)
0.173(4.40)
Case : JEDEC SMAF Molded plastic body
Terminals : Solder plated, solderable per MIL-STD-750,Method 2026
Polarity : Polarity symbol marking on body
Mounting Position : Any
Weight : 0.00095ounce, 0.027 grams
Dimensions in inches and (millimeters)
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%.
Parameter
SYMBOLS
Marking Code
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current
at TL=125℃
Peak forward surge current
8.3ms single half sine-wave
superimposed onrated load (JEDEC Method)
Maximum instantaneous forward voltage at 1.0A
Maximum DC reverse current
at rated DCblocking voltage
Maximum reverse recovery time
TA=25℃
TA=125℃
(NOTE 1)
Typical junction capacitance (NOTE 2)
Typical thermal resistance (NOTE 3)
Operating junction and storage temperature range
VRRM
VRMS
VDC
MDD
US1AF
MDD
US1BF
50
35
50
100
70
100
MDD
MDD
US1DF US1GF
200
140
200
MDD
US1JF
400
280
400
600
420
600
MDD
MDD
US1KF US1MF
800
560
800
1000
700
1000
UNITS
V
V
V
I(AV)
1.0
A
IFSM
30
A
VF
1.3
1.0
5.0
100
IR
trr
1.70
50
V
mA
75
ns
CJ
RJA
15.0
pF
80.0
℃/W
TJ,TSTG
-55 to +150
℃
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 2.0”x2.0”(5.0x5.0cm) copper pad areas
http://www.microdiode.com
Rev:2024A2
Page :1
US1AF THRU US1MF
Reverse Voltage - 50 to 1000 Volts
Forward Current - 1.0 Ampere
Ratings And Characteristic Curves
Fig.1 Forward Current Derating Curve
Fig.2 Typical Reverse Characteristics
1.2
100
0.8
0.6
0.4
0.2
Single phase half-wave 60 Hz resistive
or inductive load
0.0
25
75
50
100
125
150
175
Instaneous Reverse Current(μA)
Average Forward Current (A)
1.0
TJ=125°C
10
1.0
TJ=25°C
0.1
00
Case Temperature (°C)
60
80
100
120
140
Fig.4 Maximum Non-Repetitive Peak
Forward Surage Current
10
35
Peak Forward Surage Current (A)
TJ=25°C
1.0
Instaneous Forward Current (A)
40
percent of Rated Peak Reverse Voltage (%)
Fig.3 Typical Forward Characteristics
US1AF~US1DF
US1GF
0.1
US1JF~US1MF
0.01
0.001
20
0
0.5
1.0
1.5
2.0
2.5
Instaneous Forward Voltage (V)
30
25
20
15
10
05
00
8.3 ms Single Half Sine Wave (JEDEC
Method)
10
1
100
Number of Cycles
Fig.5 Typical Junction Capacitance
TJ=25°C
Junction Capacitance (pF)
100
10
1
0.1
1
10
100
Reverse Voltage (V)
The curve above is for reference only.
http://www.microdiode.com
Rev:2024A2
Page :2
US1AF THRU US1MF
Reverse Voltage - 50 to 1000 Volts
Forward Current - 1.0 Ampere
Packing information
P0
unit:mm
P1
d
E
Item
F
B
A
Symbol
Tolerance
A
B
C
d
D
D1
D2
E
F
P
P0
P1
T
W
W1
0.1
0.1
0.1
0.05
2.0
min
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.3
1.0
SMAF
W
Carrier width
Carrier length
Carrier depth
Sprocket hole
7" Reel outside diameter
7" Reel inner diameter
Feed hole diameter
Sprocket hole position
Punch hole position
Punch hole pitch
Sprocket hole pitch
Embossment center
Overall tape thickness
Tape width
Reel width
P
D2
T
D1
C
W1
D
2.80
4.75
1.42
1.50
178.00
54.40
13.00
1.75
5.05
4.00
4.00
2.00
0.30
8.00
12.30
Note:Devices are packed in accor dance with EIA standar RS-481-A and specifications listed above.
Reel packing
PACKAGE
SMAF
REEL SIZE
7"
REEL
(pcs)
COMPONENT
SPACING
(m/m)
BOX
(pcs)
INNER
BOX
(m/m)
REEL
DIA,
(m/m)
CARTON
SIZE
(m/m)
CARTON
(pcs)
APPROX.
GROSS WEIGHT
(kg)
3,000
4.0
6,000
210*208*203
178
400*265*400
120,000
10.0
Suggested Pad Layout
Symbol
Unit (mm)
Unit (inch)
A
1.8
0.071
B
1.6
3.8
0.150
D
2.2
0.087
E
5.4
0.213
C
http://www.microdiode.com
0.063
Rev:2024A2
Page :3
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