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.
©2009 Fairchild Semiconductor Corporation 1 RURD4120S9A_F085 Rev. A
RURD4120S9A_F085
4A, 1200V Ultrafast Diodes
The RURD4120S9A_F085 are ultrafast diodes with
soft recovery characteristics (t
rr
< 70ns). They have low
forward voltage drop and are silicon nitride passivated
ion-implanted epitaxial planar construction.
These devices are intended for use as freewheeling/
clamping diodes and rectifiers in a variety of switching power
supplies and other power switching applications. Their low
stored charge and ultrafast soft recovery minimize ringing
and electrical noise in many power switching circuits
reducing power loss in the switching transistors.
Formerly developmental type TA49036.
Symbol
Features
• Ultrafast with Soft Recovery. . . . . . . . . . . . . . . . . . . <70ns
• Operating Temperature . . . . . . . . . . . . . . . . . . . . . . 175
o
C
• Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200V
• Avalanche Energy Rated
• Planar Construction
Applications
• Switching Power Supplies
• Power Switching Circuits
• General Purpose
Packaging
JEDEC STYLE TO-252
Ordering Information
PART NUMBER PACKAGE BRAND
RURD4120S9A_F0859A_F085 TO-252 UR4120
K
A
ANODE
CATHODE
CATHODE
(FLANGE)
Absolute Maximum Ratings
T
C
= 25
o
C, Unless Otherwise Specified
RURD4120S9A_F085 UNITS
Peak Repetitive Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
RRM
1200 V
Working Peak Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
RWM
1200 V
DC Blocking Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
R
1200 V
Average Rectified Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I
F(AV)
(T
C
= 152
o
C)
4A
Repetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
FRM
(Square Wave, 20kHz)
8A
Nonrepetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
FSM
(Halfwave, 1 Phase, 60Hz)
40 A
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P
D
50 W
Avalanche Energy (See Figures 10 and 11). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E
AVL
10 mJ
Operating and Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
STG
, T
J
-65 to 175
o
C
Data Sheet March 2009
• Qualified to ACE Q101
• RoHS Compliant
©2009 Fairchild Semiconductor Corporation 2 RURD4120S9A_F085 Rev. A
Electrical Specifications
T
C
= 25
o
C, Unless Otherwise Specified
SYMBOL TEST CONDITION MIN TYP MAX UNITS
V
F
I
F
= 4A - - 2.1 V
I
F
= 4A, T
C
= 150
o
C - - 1.9 V
I
R
V
R
= 1200V - - 100
µ
A
V
R
= 1200V, T
C
= 150
o
C - - 500
µ
A
t
rr
I
F
= 1A, dI
F
/dt = 200A/
µ
s--70ns
I
F
= 4A, dI
F
/dt = 200A/
µ
s--90ns
t
a
I
F
= 4A, dI
F
/dt = 200A/
µ
s - 40 - ns
t
b
I
F
= 4A, dI
F
/dt = 200A/
µ
s - 28 - ns
Q
RR
I
F
= 4A, dI
F
/dt = 200A/
µ
s - 335 - nC
C
J
V
R
= 10V, I
F
= 0A - 15 - pF
R
θ
JC
--3
o
C/W
DEFINITIONS
V
F
= Instantaneous forward voltage (pw = 300
µ
s, D = 2%).
I
R
= Instantaneous reverse current.
t
rr
= Reverse recovery time (See Figure 9), summation of t
a
+ t
b
.
t
a
= Time to reach peak reverse current (See Figure 9).
t
b
= Time from peak I
RM
to projected zero crossing of I
RM
based on a straight line from peak I
RM
through 25% of I
RM
(See Figure 9).
Q
RR
= Reverse recovery time.
C
J
= Junction capacitance.
R
θ
JC
= Thermal resistance junction to case.
pw = Pulse width.
D = Duty cycle.
Typical Performance Curves
FIGURE 1. FORWARD CURRENT vs FORWARD VOLTAGE FIGURE 2. REVERSE CURRENT vs REVERSE VOLTAGE
VF, FORWARD VOLTAGE (V)
IF, FORWARD CURRENT (A)
1
20
0.5
10
0 0.5 1 1.5 2 2.5 3
25oC
175oC
100oC
VR, REVERSE VOLTAGE (V)
0 400 800 1200600 1000
100
0.01
0.1
1
10
IR, REVERSE CURRENT (µA)
200
0.001
25oC
100oC
175oC
RURD4120S9A_F085
©2009 Fairchild Semiconductor Corporation 3 RURD4120S9A_F085 Rev. A
FIGURE 3. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT FIGURE 4. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT
FIGURE 5. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT FIGURE 6. CURRENT DERATING CURVE
FIGURE 7. JUNCTION CAPACITANCE vs REVERSE VOLTAGE
Typical Performance Curves
(Continued)
IF, FORWARD CURRENT (A)
0.5
0
45
30
15
75
41
trr
60
t, RECOVERY TIMES (ns)
tb
ta
TC = 25oC, dIF/dt = 200A/µs
0.5
0
60
100
41
t, RECOVERY TIMES (ns)
IF, FORWARD CURRENT (A)
tb
80
20
trr
ta
40
TC = 100oC, dIF/dt = 200A/µs
0.5
0
25
125
41
trr
tb
100
ta
t, RECOVERY TIMES (ns)
IF, FORWARD CURRENT (A)
50
75
TC = 175oC, dIF/dt = 200A/µs
5
1
0
125 135 155 175165
2
3
4
TC, CASE TEMPERATURE (oC)
IF(AV), AVERAGE FORWARD CURRENT (A)
145
DC
SQ. WAVE
VR, REVERSE VOLTAGE (V)
30
15
00 50 100 150 200
75
CJ, JUNCTION CAPACITANCE (pF)
60
45
RURD4120S9A_F085
©2009 Fairchild Semiconductor Corporation 4 RURD4120S9A_F085 Rev. A
Test Circuits and Waveforms
FIGURE 8. t
rr
TEST CIRCUIT FIGURE 9. t
rr
WAVEFORMS AND DEFINITIONS
FIGURE 10. AVALANCHE ENERGY TEST CIRCUIT FIGURE 11. AVALANCHE CURRENT AND VOLTAGE
WAVEFORMS
RG
L
VDD
IGBT
CURRENT
SENSE
DUT
VGE
t1
t2
VGE AMPLITUDE AND
t1 AND t2 CONTROL IF
RG CONTROL dIF/dt
+
-
dt
dIF
IF
trr
tatb
0
IRM
0.25 IRM
DUT
CURRENT
SENSE
+
LR
VDD
R < 0.1Ω
EAVL = 1/2LI2 [VR(AVL)/(VR(AVL) - VDD)]
Q1 = IGBT (BVCES > DUT VR(AVL))
-
VDD
Q1
I = 1A
L = 20mH
IV
t0t1t2
IL
VAVL
t
IL
RURD4120S9A_F085
IL
RURD4120S9A_F085
IL
RURD4120S9A_F085
IL
RURD4120S9A_F085
Rev. I39
TRADEMARKS
The following include s registered and unreg istered trademarks and service marks, owned by Fairchild Semicon ductor and/or its global subsidiaries, and is not
intended to be an exhaustive list of all such trademarks.
* Trademarks of System General Corporat ion, used under license by Fairchild Semiconductor.
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE
RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY
PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY
THEREIN, WHICH COVERS THESE PRODUCTS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEV ICES OR SYSTEMS WITHOUT THE
EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems which, (a) are
intended for surgical implant int o the body or (b) support or sustain lif e,
and (c) whose failure to perform when properly used in accorda nce with
instructions for use provided in the labeling, can be reasonably
expected to result in a significant injury of the user.
2. A critical component in any component of a life support, device, or
system whose failure to perform can be reasonabl y expected t o cause
the failure of the life support device or system, or to affect its safety or
effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Build it Now™
CorePLUS™
CorePOWER™
CROSSVOLT™
CTL™
Current Transfer Logic™
EcoSPARK®
EfficentMax™
EZSWITCH™ *
™
Fairchild®
Fairchild Semiconductor®
FACT Quiet Series™
FACT®
FAST®
FastvCore™
FlashWriter® *
FPS™
F-PFS™
FRFET®
Global Power ResourceSM
Green FPS™
Green FPS™ e-Series™
GTO™
IntelliMAX™
ISOPLANAR™
MegaBuck™
MICROCOUPLER™
MicroFET™
MicroPak™
MillerDrive™
MotionMax™
Motion-SPM™
OPTOLOGIC®
OPTOPLANAR®
®
PDP SPM™
Power-SPM™
PowerTrench®
PowerXS™
Programmable Active Droop™
QFET®
QS™
Quiet Series™
RapidConfigure™
™
Saving our world, 1mW /W /kW at a time™
SmartMax™
SMART START™
SPM®
STEALTH™
SuperFET™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SupreMOS™
SyncFET™ ®
The Power Franchise®
TinyBoost™
TinyBuck™
TinyLogic®
TINYOPTO™
TinyPower™
TinyPWM™
TinyWire™
TriFault Detect™
TRUECURRENT™*
μSerDes™
UHC®
Ultra FRFET™
UniFET™
VCX™
VisualMax™
XS™
tm
®
tm
tm
Datasheet Identification Product Status Definition
Advance Informati on Formative / In Design Datasheet contains the design specifications for product development. Specifications
may change in any manner without notice.
Preliminary First Production Datasheet contains preliminary data; supplementary data will be published at a later
date. Fairchild Semiconduct or reserves the right to make changes at any time witho ut
notice to improve design.
No Identification Neede d Full Production Datasheet contains final specifications. Fairchild Semiconductor reserves the right to
make changes at any time without notice to impr ove the design.
Obsolete Not In Production Datasheet contains specifications on a product that is discontinued by Fairchild
Semiconductor. The datasheet is for ref erence informat i on only.
ANTI-COUNTERFEITING POLICY
Fairchild Semiconductor Corporation’s Anti-Counterfeiting Policy. Fairchild’s Anti-Counterfeiting Policy is also stated on our external website,
www.Fairchildsemi.com, under Sales Support.
Counterfeiti ng of semiconductor parts is a growing problem in the in dustry. All manufacture s of semiconductor products are experiencing coun terfeiting of their
parts. Customers who in advertently p urchase co unterf eit pa rts experi ence ma ny pro blems such as loss of bra nd r eputat ion, sub standard per formance, failed
application, and increased cost of production and manufacturing delays. Fairchild is taking strong measu res to protect ourselves and our cust ome rs fr om the
proliferation of counterfei t parts. Fairchild strongly encourages customers to pu rchase Fairchild parts either directly from Fairchild or from A uthorized Fairchild
Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild
Distributors are genuine parts, have full traceability, meet Fairchild’s quality standards for handing and storage and provide access to Fairchild’s full range of
up-to-date technical and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address and
warranty issues that may arise. Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is
committed to combat this global problem and encourage our custo mers to do their part in stopping this practice by buying direct or from authorized distributors.
©2009 Fairchild Semiconductor Corporation 1 RURD4120S9A_F085 Rev. B
©2009 Fairchild Semiconductor Corporation 1 RURD4120S9A_F085 Rev. B
©2009 Fairchild Semiconductor Corporation 1 RURD4120S9A_F085 Rev. B
©2009 Fairchild Semiconductor Corporation 1 RURD4120S9A_F085 Rev. B
©2009 Fairchild Semiconductor Corporation 1 RURD4120S9A_F085 Rev. B
©2009 Fairchild Semiconductor Corporation 1 RURD4120S9A_F085 Rev. B
©2009 Fairchild Semiconductor Corporation 1 RURD4120S9A_F085 Rev. B
©2009 Fairchild Semiconductor Corporation 1 RURD4120S9A_F085 Rev. B
©2009 Fairchild Semiconductor Corporation 5 RURD4120S9A_F085 Rev. A
RURD4120S9A_F085
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
