To learn more about ON Semiconductor, please visit our website at
www.onsemi.com
Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor
product management systems do not have the ability to manage part nomenclature that utilizes an underscore
(_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain
device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated
device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please
email any questions regarding the system integration to Fairchild_questions@onsemi.com.
Is Now Part of
ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right
to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON
Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON
Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s
technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA
Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended
or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out
of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor
is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
US1AFA - US1MFA — Super Fast Surface Mount Rectifiers
© 2015 Fairchild Semiconductor Corporation www.fairchildsemi.com
US1AFA - US1MFA Rev. 1.2
May 2016
US1AFA - US1MFA
Super Fast Surface Mount Rectifiers
Features
• Glass Passivated Chip Junction
• Low Power Loss, High Efficiency
• Fast Switching Reverse Recovery Time: 50~75 ns Maximum
• High Surge Capacity
• UL Flammability 94V-0 Classification
• MSL 1 per J-STD-020
• RoHS Compliant / Green Molding Compound
• Industrial Device Qualified per AEC-Q101 Standards
* See authorized use policy
Ordering Information
Part Number Top Mark Package Packing Method
US1AFA HAL SOD-123FA Tape and Reel
US1BFA HBL SOD-123FA Tape and Reel
US1DFA HDL SOD-123FA Tape and Reel
US1FFA HFL SOD-123FA Tape and Reel
US1GFA HGL SOD-123FA Tape and Reel
US1JFA HJL SOD-123FA Tape and Reel
US1KFA HKL SOD-123FA Tape and Reel
US1MFA HML SOD-123FA Tape and Reel
12
Cathode Anode
SOD-123FA
1
2
US1AFA - US1MFA — Super Fast Surface Mount Rectifiers
© 2015 Fairchild Semiconductor Corporation www.fairchildsemi.com
US1AFA - US1MFA Rev. 1.2 2
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted.
Thermal Characteristics
Values are at TA = 25°C unless otherwise noted.
Note:
1. Device mounted at minimum pad.
Electrical Characteristics
Values are at TA = 25°C unless otherwise noted.
Note:
2. Pulse test with PW = 300 μs, 1% duty cycle
Symbol Parameter Value Unit
US1
AFA US1
BFA US1
DFA US1
FFA US1
GFA US1
JFA US1
KFA US1
MFA
VRRM Repetitive Peak Reverse Voltage 50 100 200 300 400 600 800 1000 V
VRMS RMS Reverse Voltage 35 70 140 210 280 420 560 700 V
VRDC Blocking Voltage 50 100 200 300 400 600 800 1000 V
IF(AV) Average Forward Rectified Current 1 A
IFSM
Peak Forward Surge Current: 8.3 ms
Single Half Sine-Wave Superimposed
on Rated Load
30 A
TJOperating Junction Temperature Range -55 to +150 C
TSTG Storage Temperature Range -55 to +150 C
Symbol Parameter Value Unit
JL Typical Thermal Characteristics, Junction-to-Lead 21 C/W
RJA Typical Thermal Resistance, Junction-to-Ambient 153 C/W
Symbol Parameter Conditions Value Unit
US1
AFA US1
BFA US1
DFA US1
FFA US1
GFA US1
JFA US1
KFA US1
MFA
VF
Maximum Instantaneous
Forward Voltage(2) IF = 1 A 0.95 1.30 1.70 V
IR
Maximum Reverse
Current at Rated VR
TJ = 25°C 5 A
TJ = 125°C 150
CJ
Typical Junction
Capacitance
VR = 4 V,
f = 1 MHz 20 15 pF
Trr
Maximum Reverse
Recovery Time
IF = 0.5 A,
IR = 1 A,
Irr = 0.25 A
50 75 ns
US1AFA - US1MFA — Super Fast Surface Mount Rectifiers
© 2015 Fairchild Semiconductor Corporation www.fairchildsemi.com
US1AFA - US1MFA Rev. 1.2 3
Typical Performance Characteristics
Figure 1. Maximum Forward Current
Derating Voltage Figure 2. Typical Reverse Characteristics
Figure 3. Maximum Non-Repetitive
Forward Surge Current Figure 4. Typical Instantaneous
Forward Characteristics
Figure 5. Typical Junction Capacitance Figure 6. Re verse Recovery Time Characte ristic and
Test Circuit Diagram
AVERAGE FORWARD CURRENT (A)
LEAD TEMPERATURE (
o
C)
INSTANTANEOUS REVERSE CURRENT
(ȝA)
PERCENT OF RATED PEAK REVERSE VOLTAGE (%)
TJ=25к
TJ=125к
PEAK FORWARD SURGE
C
URRENT (A)
NUMBER OF CYCLES AT 60 Hz
8.3ms Single Half Sine Wave
INSTANTANEOUS FORWARD
CURRENT (A)
FORWARD VOLTAGE (V)
US1AFA-US1DFA
US1GFA
US1JFA-US1MFA
JUNCTION CAPACITANCE (pF)
REVERSE VOLTAGE (V)
US1AFA-US1GFA
US1JFA-US1MFA
1.40
1.20
1.90 1.40
1.20
4.30
1.43
1.23
0.30
0.16 3.80
3.40
1.90
1.70
2.90
2.70
1.20
0.80
0.85
0.35 2.60
2.45
NOTES:
A. NO INDUSTRY STANDARD APPLIES TO THIS
PACKAGE.
B. ALL DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS ARE EXCLUSIVE OF BURRS,
MOLD FLASH AND TIE BAR PROTRUSIONS.
D. DRAWING FILE NAME: MKT-MA02Drev3
TOP VIEW
LAND PATTERN RECOMMENDATION
BOTTOM VIEW
FRONT VIEW
www.onsemi.com
1
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
www.onsemi.com
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
19521 E. 32nd Pkwy, Aurora, Colorado 80011 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
© Semiconductor Components Industries, LLC
