US1A - US1M
Document number: DS16008 Rev. 11 - 2 1 of 5
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US1A - US1M
1.0A SURFACE MOUNT ULTRA-FAST RECTIFIER
Features
Glass Passivated Die Construction
Ultra-Fast Recovery Time for High Efficiency
Surge Overload Rating to 30A Peak
High Current Capability
Ideally Suited for Automated Assembly
Lead-Free Finish; RoHS Compliant (Note 1)
Halogen and Antimony Free. “Green” Device (Note 2)
Mechanical Data
Case: SMA
Case Material: Molded Plastic. UL Flammability Classification
Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Lead Free Plating (Matte Tin Finish). Solderable per
MIL-STD-202, Method 208
Polarity: Cathode Band or Cathode Notch
Weight: 0.064 grams (Approximate)
Ordering Information (Note 3)
Part Number* Case Packaging
US1x-13-F SMA 5,000/Tape & Reel
*x = Device type, e.g. US1A-13-F.
Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.
2. See http ://www.diodes.com/quality/lead_free.html for more inf ormation about Diodes Inco rporated’s definitio ns of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Marking Information
Green
Top View Bottom View
US1x = Product Type Marking Code, ex: US1A
= Manufacturers’ Code Ma rking
YWW = Date Code Marking
Y = Last Digit of Year (ex: 4 for 2014)
WW = Week Code (01 to 53)
YWW
US1x
US1A - US1M
Document number: DS16008 Rev. 11 - 2 2 of 5
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Maximum Ratings (@TA = +25°C unless otherwise specified.)
Single phase, half wave, 60Hz, resistive or inductive load.
For capacitance load, derate current by 20%.
Characteristic Symbol US1A US1B US1D US1G US1J US1K US1M Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage (Note 4)
VRRM
VRWM
VR 50 100 200 400 600 800 1000 V
RMS Reverse Voltage VR
(
RMS
)
35 70 140 280 420 560 700 V
Average Rectified Output Current @ TT = +75°C IO 1.0 A
Non-Repetitive Peak Forward Surge Current 8.3ms
Single Half Sine-Wave Superimposed on Rated Load IFSM 30 A
Thermal Characteristics
Characteristic Symbol Value Unit
Maximum Thermal Resistance, Junction to Terminal R
JT 30 °C/W
Operating and Storage Temperature Range TJ, TSTG -65 to +150 °C
Electrical Characteristics (@TA = +25°C unless otherwise specified.)
Characteristic Symbol US1A US1B US1D US1G US1J US1K US1M Unit
Forward Voltage Drop @ IF = 1.0A VFM 1.0 1.3 1.7 V
Peak Reverse Current @ TA = +25°C
at Rated DC Blocking Voltage (Note 4) @ TA = +100°C IRM 5.0
100 µA
Reverse Recovery Time (Note 5) trr 50 75 ns
Typical Total Capacitance (Note 6) CT 20 10 pF
Notes: 4. Short duration pulse test used to minimize self-heating effect.
5. Measured with IF = 0.5A, IR = 1.0A, Irr = 0.25A. See Figure 5.
6. Measured at 1.0MHz and applied reverse voltage of 4.0V DC.
0
0.5
1.0
25 50 75 100 125 150
I, AV
E
R
AG
E
R
E
C
T
IFI
E
D
C
U
R
R
E
N
T
(A)
O
T , TERMINAL TEMPERATURE ( C)
Fig. 1 Forward Current Derating Curve
T
°
0.01
0.1
1.0
10
00.40.8
I, I
N
S
T
A
N
T
A
N
E
O
U
S
FO
R
WA
R
D
C
U
R
R
E
N
T
(A)
F
V , INSTANTANEOUS FORW ARD VOLTAGE (V)
Fig. 2 T ypical Forward Characteristics
F
1.2 1.6 2.0
US1A - US1D
US1G
US1J - US1M
US1A - US1M
Document number: DS16008 Rev. 11 - 2 3 of 5
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© Diodes Incorpo rated
US1A - US1M
0
10
20
30
40
110100
I,
P
E
AK FO
R
WA
R
D
S
U
R
G
E
C
U
R
R
E
N
T
(A)
FSM
NUMBER OF CYCLES A T 60Hz
Fig. 3 Forward Surge Current Derating Curve
0.01
0.1
1.0
10
100
1,000
0 20 40 60 80 100 120 140
PERCENT OF RATED PEAK REVERSE VOLT AGE (%)
Fig. 4 Ty pical Reverse Characteristics
T = 100C
j
°
T = 25 C
j
°
US1A - US1M
Document number: DS16008 Rev. 11 - 2 4 of 5
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US1A - US1M
Package Outline Dimensions
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for latest version.
SMA
SMA
Dim Min Max
A 2.29 2.92
B4.00 4.60
C 1.27 1.63
D0.15 0.31
E 4.80 5.59
G 0.05 0.20
H0.76 1.52
J 1.96 2.40
All Dimensions in mm
Dimensions Value
(in mm)
C4.00
G 1.50
X 2.50
X1 6.50
Y 1.70
AC
J
G
B
E
H
D
C
X1
Y
G
X
US1A - US1M
Document number: DS16008 Rev. 11 - 2 5 of 5
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IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
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trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in su ch applications shall assume
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website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintende d or unauthorized application, Customers shall indemnify and
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indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
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This document is written in English but ma y be translated into multiple languages for reference. Only the English vers ion of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized fo r use as critical components in life support devices or s ystems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for
use provided in the labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their prod ucts and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
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