W TE
PO WE R SEM IC O ND U C TO RS
US1A – US1K
1.0A SURFACE MOUNT ULTRA FAST RECTIFIER
Features
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Glass Passivated Die Construction
Ideally Suited for Automatic Assembly
Low Forward Voltage Drop, High Efficiency
Surge Overload Rating to 30A Peak
Low Power Loss
Ultra-Fast Recovery Time
Plastic Case Material has UL Flammability
Classification Rating 94V-O
B
D
A
F
C
H
G
E
Mechanical Data
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Case: Molded Plastic
Terminals: Solder Plated, Solderable
per MIL-STD-750, Method 2026
Polarity: Cathode Band or Cathode Notch
Marking: Type Number
Weight: 0.064 grams (approx.)
SMA/DO-214AC
Dim
Min
Max
A
2.50
2.90
B
4.00
4.60
C
1.40
1.60
D
0.152
0.305
E
4.80
5.28
F
2.00
2.44
G
0.051
0.203
H
0.76
1.52
All Dimensions in mm
Maximum Ratings and Electrical Characteristics
Characteristic
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Average Rectified Output Current
@T
L
= 100°C
Symbol
V
RRM
V
RWM
V
R
V
R(RMS)
I
O
US1A
@T
A
=25°C unless otherwise specified
US1B
US1D
US1G
US1J
US1K
Unit
50
35
100
70
200
140
1.0
400
280
600
420
800
560
V
V
A
Non-Repetitive Peak Forward Surge Current
8.3ms Single half sine-wave superimposed on
rated load (JEDEC Method)
@T
A
= 55°C
Forward Voltage
Peak Reverse Current
At Rated DC Blocking Voltage
Reverse Recovery Time (Note 1)
Typical Junction Capacitance (Note 2)
Typical Thermal Resistance (Note 3)
Operating and Storage Temperature Range
@I
F
= 1.0A
@T
A
= 25°C
@T
A
= 100°C
I
FSM
V
FM
I
RM
t
rr
C
j
R
JL
T
j,
T
STG
50
1.0
30
1.4
10
500
100
15
30
-50 to +150
1.7
A
V
µA
nS
pF
K/W
°C
Note: 1. Measured with I
F
= 0.5A, I
R
= 1.0A, I
rr
= 0.25A,
2. Measured at 1.0 MHz and applied reverse voltage of 4.0 V DC.
3. Mounted on P.C. Board with 8.0mm
2
land area.
US1A – US1K
1 of 3
© 2002 Won-Top Electronics
I
F
, INSTANTANEOUS FORWARD CURRENT (A)
I
(AV),
AVERAGE FORWARD CURRENT (A)
10
1.0
US1A - US1D
US1G
1.0
US1J - US1K
0.5
0.1
0
25
50
75
100
125
150
T
j
- 25
°
C
Pulse Width = 300
µ
s
0.01
0
0.4
0.8
1.2
1.6
2.0
V
F
, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
T
L
, LEAD TEMPERATURE
(
°
C)
Fig. 1 Forward Current Derating Curve
40
Single Half Sine-Wave
(JEDEC Method)
I
R
, INSTANTANEOUS REVERSE CURRENT (mA)
I
FSM
, PEAK FORWARD SURGE CURRENT (A)
1000
30
100
T
j
= 100
°
C
10
20
1.0
T
j
= 25
°
C
10
T
j
= 150
°
C
0.1
0
1
10
100
NUMBER OF CYCLES AT 60Hz
Fig. 3 Forward Surge Current Derating Curve
0.01
0
20
40
60
80
100
120
140
PERCENT OF RATED PEAK REVERSE VOLTAGE (%)
Fig. 4 Typical Reverse Characteristics
t
rr
+0.5A
50
Ω
NI (Non-inductive)
10
Ω
NI
Device
Under
Test
(-)
Pulse
Generator
(Note 2)
0A
(+)
50V DC
Approx
-0.25A
(-)
1.0
Ω
NI
Oscilloscope
(Note 1)
(+)
Notes:
1. Rise Time = 7.0ns max. Input Impedance = 1.0M
Ω
, 22pF.
2. Rise Time = 10ns max. Input Impedance = 50
Ω
.
-1.0A
Set time base for 10ns/cm
Fig. 5 Reverse Recovery Time Characteristic and Test Circuit
US1A
–
US1K
2 of 3
©
2002
Won-Top Electronics
ORDERING INFORMATION
Product No.
!
US1A-T1
US1A-T3
US1B-T1
US1B-T3
US1D-T1
US1D-T3
US1G-T1
US1G-T3
US1J-T1
US1J-T3
US1K-T1
US1K-T3
Package Type
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
Shipping Quantity
1800/Tape & Reel
7500/Tape & Reel
1800/Tape & Reel
7500/Tape & Reel
1800/Tape & Reel
7500/Tape & Reel
1800/Tape & Reel
7500/Tape & Reel
1800/Tape & Reel
7500/Tape & Reel
1800/Tape & Reel
7500/Tape & Reel
Products listed in
bold
are WTE
Preferred
devices.
!
T1 suffix refers to a 7” reel. T3 suffix refers to a 13” reel.
Shipping quantity given is for minimum packing quantity only. For minimum order
quantity, please consult the Sales Department.
RECOMMENDED FOOTPRINT
0.050 MIN
(1.27 MIN)
0.058 MIN
(1.47 MIN)
0.083 MAX
(2.11 MAX)
inches(mm)
Won-Top Electronics Co., Ltd (WTE) has checked all information carefully and believes it to be correct and accurate. However, WTE cannot assume any
responsibility for inaccuracies. Furthermore, this information does not give the purchaser of semiconductor devices any license under patent rights to
manufacturer. WTE reserves the right to change any or all information herein without further notice.
WARNING:
DO NOT USE IN LIFE SUPPORT EQUIPMENT. WTE power semiconductor products are not authorized for use as critical components in life
support devices or systems without the express written approval.
Won-Top Electronics Co., Ltd.
No. 44 Yu Kang North 3rd Road, Chine Chen Dist., Kaohsiung, Taiwan
Phone:
886-7-822-5408 or 886-7-822-5410
Fax:
886-7-822-5417
Email:
sales@wontop.com
Internet:
http://www.wontop.com
We power your everyday.
© 2002 Won-Top Electronics
US1A – US1K
3 of 3
PCB Design
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