US1A US1K
1 of 3 2002 Won-Top Electronics
US1A US1K
1.0A SURFACE MOUNT ULTRA FAST RECTIFIER
Features
!
Glass Passivated Die Construction
!
Ideally Suited for Automatic Assembly B
!
Low Forward Voltage Drop, High Efficiency
!
Surge Overload Rating to 30A Peak D
!
Low Power Loss A
!
Ultra-Fast Recovery Time F
!
Plastic Case Material has UL Flammability
Classification Rating 94V-O C H G
E
Mechanical Data
!
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.)
Maximum Ratings and Electrical Characteristics
@T
A
=25C unless otherwise specified
Characteristic
Symbol
US1A
US1B
US1D
US1G
US1J
US1K
Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
50
100
200
400
600
800
V
RMS Reverse Voltage
V
R(RMS)
35
70
140
280
420
560
V
Average Rectified Output Current @T
L
= 100C
I
O
1.0
A
Non-Repetitive Peak Forward Surge Current
8.3ms Single half sine-wave superimposed on
rated load (JEDEC Method) @T
A
= 55C
I
FSM
30
A
Forward Voltage @I
F
= 1.0A
V
FM
1.0
1.4
1.7
V
Peak Reverse Current @T
A
= 25C
At Rated DC Blocking Voltage @T
A
= 100C
I
RM
10
500
A
Reverse Recovery Time (Note 1)
t
rr
50
100
nS
Typical Junction Capacitance (Note 2)
C
j
15
pF
Typical Thermal Resistance (Note 3)
R
JL
30
K/W
Operating and Storage Temperature Range
T
j,
T
STG
-50 to +150
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.
W T E
PO W E R SEM IC O ND U C TO RS
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
US1A
US1K
2 of 3 2002 Won-Top Electronics
50V DC
Approx
50
NI (Non-inductive)
10
NI
1.0
NI
Oscilloscope
(Note 1)
Pulse
Generator
(Note 2)
Device
Under
Test
t
rr
Set time base for 10ns/cm
+0.5A
0A
-0.25A
-1.0A
Notes:
1. Rise Time = 7.0ns max. Input Impedance = 1.0M , 22pF.
2. Rise Time = 10ns max. Input Impedance = 50 .
Fig. 5 Reverse Recovery Time Characteristic and Test Circuit
(+)
(+)
(-)
(-)
0.01
0.1
1.0
10
100
1000
0
20
40
60
80
100
120
140
I
,
INST
ANT
ANEOUS
REVERSE
CURRENT
(mA)
R
PERCENT OF RATED PEAK REVERSE VOLTAGE (%)
Fig. 4 Typical Reverse Characteristics
T = 100 C
j
T = 25 C
j
0.01
0.1
1.0
10
0
0.4
0.8
I
,
INST
ANT
ANEOUS
FOR
W
ARD
CURRENT
(A)
F
V , INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
F
T - 25 C
j
Pulse Width = 300 s
1.2
1.6
2.0
US1A - US1D
US1G
US1J - US1
K
0
10
20
30
40
1
10
100
I
,
PEAK
FOR
W
ARD
SURGE
CURRENT
(A)
FSM
NUMBER OF CYCLES AT 60Hz
Fig. 3 Forward Surge Current Derating Curve
Single Half Sine-Wave
(JEDEC Method)
T = 150 C
j
0
0.5
1.0
25
50
75
100
125
150
I
A
VERAGE
FOR
W
ARD
CURRENT
(A)
(A
V),
T ,
LEAD TEMPERATURE ( C)
Fig. 1 Forward Current Derating Curve
L
US1A US1K
3 of 3 2002 Won-Top Electronics
ORDERING INFORMATION
Product No.
!
!
!
!
Package Type
Shipping Quantity
US1A-T1
SMA
1800/Tape & Reel
US1A-T3
SMA
7500/Tape & Reel
US1B-T1
SMA
1800/Tape & Reel
US1B-T3
SMA
7500/Tape & Reel
US1D-T1
SMA
1800/Tape & Reel
US1D-T3
SMA
7500/Tape & Reel
US1G-T1
SMA
1800/Tape & Reel
US1G-T3
SMA
7500/Tape & Reel
US1J-T1
SMA
1800/Tape & Reel
US1J-T3
SMA
7500/Tape & Reel
US1K-T1
SMA
1800/Tape & Reel
US1K-T3
SMA
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)
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.
We power your everyday.
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
0.058 MIN
(1.47 MIN)
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(2.11 MAX)
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