US3AC~US3MC
ROHS
Revision March 1,2022 www.unsemi.com.tw
www.unsemi.com.tw
For technical questions, contact: tech@unsemi.com.tw
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
1/3
Surface Mount Fast Recovery Rectifiers
Features
Mechanical Data
For surface mounted applications
Low profile package
Glass passivated chip junction
Easy to pick and place
High efficiency
Lead free in comply with EU RoHS 2011/65/EU directives
Case: SMC
Quantity Per Reel : 3,000pcs
Approx. Weight : 0.22g / 0.0077oz
Terminals: Solderable per MIL-STD-750, Method 2026
1：Cathode
2：Anode
Parameter
Symbol
US3AC US3BC US3DC US3GC US3JC US3KC US3MC Units
V
V
V��
I()
V
I
I
trr
R
JA
R
T,Tstg
V
V
V
A
V
nS
℃
Ta=25℃
Ta=125℃
（1）
Note:(1) Measured with I=0.5A, I=1A, Irr=0.25A.
(2) P.C.B. mounted with 2.0" X 2.0" (5 X 5cm) copper pad areas.
Maximum Repetitive Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
Maximum Forward Voltage at 3A
Maximum Reverse Recovery Time
Operating and Storage Temperature Range
50
35
50
100
70
100
200
140
200
400
280
400
600
420
600
800
560
800
1000
700
1000
SMC
Peak Forward Surge Current,8.3ms Single
Half Sine-wave Superimposed on Rated Load
Maximum DC Reverse Current
at Rated DC Reverse Voltage
（2）
I
A
3.0
90
1.31.0 1.68
5.0
100
7550
-55 ~ +150
45
15
Typical Thermal Resistance
1
2
Maximum Ratings and Electrical Characteristics
Ratings at 25
℃
ambient temperature unless otherwise specified.
Single phase half-wave 60Hz, resistive or inductive load, for capacitive load current derate by 20%.
℃/W
ROHS
Revision March 1,2022 www.unsemi.com.tw
For technical questions, contact: tech@unsemi.com.tw
ROHS
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
2/3
US3AC~US3MC
Surface Mount Fast Recovery Rectifiers
Electrical Characteristics Curves
Fig. 2 Typical Reverse Characteristics
Fig.1 Maximum Average Forward Current Rating
Fig.3 Typical Forward Characteristics
Fig.4 Maximum Non-Repetitive Peak Forward
Surage Current
0.5
1.0
1.5
2.0
2.5
4.0
0
0
25 50
75
100 125 150 175
Average Forward Current (A)
Case Temperature (°C)
3.0
3.5
Single phase half-wave 60 Hz
resistive or inductive load
0.1
1.0
10
100
20 40 60 80 100 1200 140
Percent of Rated Peak Voltage (%)Reverse
Instaneous Current（ A）Reverse
T =125
J
°C
T =25
J
°C
2.0 2.5
1.5
0
0.01
0.1
1.0
10
0.5 1.0
0.001
Instaneous Forward Current (A)
Instaneous Forward Voltage (V)
T =25
J
°C
US3JC~US3MC
US3GC
US3AC~US3DC
20
40
60
80
100
120
0
10 100
Peak A)Forward Surage Current (
Number of Cycles
8.3 ms Single Half Sine Wave
(JEDEC Method)
1