US1A - US1M
Document number: DS16008 Rev. 10 - 2 1 of 4
www.diodes.com October 2011
© Diodes Incorporated
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)
• Green Molding Compound (No Halogen and Antimony)
(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 5000/Tape & Reel
*x = Device type, e.g. US1A-13-F.
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes.
2. Product manufactured with Data Code 0924 (week 24, 2009) and newer are built with Green Molding Compound.
3. For packaging details, go to our website at http://www.diodes.com.
Marking Information
Green
Top View Bottom View
US1x = Product type marking code, ex: US1A
= Manufacturers’ code marking
YWW = Date code marking
Y = Last digit of year (ex: 2 for 2002)
WW = Week code (01 to 53)
YWW
US1x
US1A - US1M
Document number: DS16008 Rev. 10 - 2 2 of 4
www.diodes.com October 2011
© Diodes Incorporated
US1A - US1M
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°CI
O 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
θ
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°CIRM 5.0
100 μA
Reverse Recovery Time (Note 5) tr
r
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 at 1.0MHz and applied reverse voltage of 4.0V DC.
6. Measured with IF = 0.5A, IR = 1.0A, Irr = 0.25A. See figure 5.
0
0.5
1.0
25 50 75 100 125 150
I, AVE
R
A
G
E
R
E
C
T
I
F
IED
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
F
O
R
WA
R
D
C
U
R
R
E
N
T
(A )
F
V , I NSTANTANE O US FORWA RD VOLTAGE ( V)
Fig. 2 Typical Fo r w ar d Char acter istic s
F
1.2 1.6 2.0
US1A - US1D
US1G
US1J - US1M
US1A - US1M
Document number: DS16008 Rev. 10 - 2 3 of 4
www.diodes.com October 2011
© Diodes Incorporated
US1A - US1M
0
10
20
30
40
110100
I,
P
EAK
F
O
R
WA
R
D S
U
R
G
E
C
U
R
R
EN
T
(A)
FSM
NUMBER OF CYCLES AT 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 Typical Reverse Characteristics
T = 100 C
j
°
T = 25 C
j
°
Package Outline Dimensions
SMA
Dim Min Max
A 2.29 2.92
B 4.00 4.60
C 1.27 1.63
D 0.15 0.31
E 4.80 5.59
G 0.05 0.20
H 0.76 1.52
J 2.01 2.30
All Dimensions in mm
A
B
C
D
G
HE
J
US1A - US1M
Document number: DS16008 Rev. 10 - 2 4 of 4
www.diodes.com October 2011
© Diodes Incorporated
US1A - US1M
Suggested Pad Layout
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).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Cus tomer or user of this document or prod ucts described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
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 p roducts for any unintended or una uthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign p atents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the e xpress
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 pro ducts and an y
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.
Copyright © 2011, Diodes Incorporated
www.diodes.com
Dimensions Value (in mm)
Z 6.5
G 1.5
X 1.7
Y 2.5
C 4.0
Z
X
C
G
Y
