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UT20005CT THRU UT2008CT
20A High Power Ultra Fast Rectifiers
Features
Dual rectifier construction, positive centetap, offer 10A
half wave and 20A full wave rectification.
Low power loss, high efficiency.
High surge current capability.
Ultra fast recovery time for switching mode application.
• Low power loss.
Glass passivated chip junctions.
Suffix "G" indicates Halogen free parts, ex. UT20005CTG.
Lead-free parts meet environmental standards of
MIL-STD-19500 /228
Mechanical data
Epoxy : UL94-V0 rated flame retardant.
Case : JEDEC TO-220AB molded plastic body.
Terminals : Solder plated, solderable per
MIL-STD-750, Method 2026.
Polarity: As marked.
Mounting Position : Any.
Weight : Approximated 2.25 gram.
Outline
TO-220AB
0.420(10.66)
0.386(9.80)
0.226(5.75)MIN
0.155(3.94)
MAX
Marking code
123
0.054(1.37)
MAX
0.038(0.96)
0.020(0.50)
0.250(6.35)
MIN
0.197(5.0)MAX
0.055(1.40)
0.043(1.10)
0.624(15.87)MAX
0.115(2.92)
0.081(2.05)
0.500(12.70)MIN
PIN 1
PIN 3
0.110(2.80)
0.091(2.30)
PIN 2
0.028(0.70)
0.011(0.28)
Dimensions in inches and (millimeters)
Maximum ratings and electrical characteristics
Rating at 25OC ambient temperature unless otherwise specified. Single phase, half wave, 60Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
Parameter
Forward rectified current
Forward surge current
Reverse current
Diode junction capacitance
Storage temperature
Conditions
8.3ms single half sine-wave superimposed on
rate load (JEDEC method)
VR = VRRM TA = 25OC
VR = VRRM TA = 125OC
f=1MHz and applied 4V DC reverse voltage
Symbol
IO
IFSM
IR
CJ
TSTG
MIN.
-55
TYP.
200
MAX.
20
150
5.0
100
+150
UNIT
A
A
uA
pF
OC
Symbol
Marking code
Max.
repetitive peak
reverse voltage
VRRM (V)
UT20005CT UT20005CT
50
UT2001CT
UT2001CT
100
UT2002CT
UT2002CT
200
UT2004CT
UT2004CT
400
UT2006CT
UT2006CT
600
UT2008CT
UT2008CT
Note : 1. IF = 0.5A, IR = 1.0A , IRR = 0.25A
800
Max.
RMS voltage
VRMS (V)
35
70
140
280
420
560
Max. DC
blocking voltage
VR (V)
50
100
200
400
600
800
Max.
forward voltage
@10A, TA = 25OC
VF (V)
1.0
1.40
1.70
Max.
reverse recovery
time(1)
Trr (ns)
50
75
Operating
temperature
TJ (OC)
-55 ~ +150
Document ID : DS-11H18
1 Revised Date : 2014/02/05
Revision : C2

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UT20005CT THRU UT2008CT
20A High Power Ultra Fast Rectifiers
Rating and characteristic curves
FIG.1-TYPICAL FORWARD CURRENT DERATING CURVE
24
20
16
12
8.0
4.0
0
0 20 40 60 80 100 120 140 160 180 200
CASE TEMPERATURE,TC(OC)
FIG.2-MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
150
8.3ms Single Half
120
Sine Wave
JEDEC method
90
60
30
0
1
5 10
50 100
NUMBER OF CYCLES AT 60Hz
FIG.3-TYPICAL FORWARD
CHARACTERISTICS
100
10
3.0
1.0
0.1
.01
.4
Tj=25OC
Pulse Width 300us
1% Duty Cycle
.6 .8 1.0 1.2 1.4 1.6
FORWARD VOLTAGE,(V)
1.8
FIG.4 - TYPICAL REVERSE
CHARACTERISTICS
100
FIG.5- TEST CIRCUIT DIAGRAM AND REVERSE
RECOVERY TIME CHARACTERISTICS
50Ω
NONINDUCTIVE
10Ω
NONINDUCTIVE
+0.5A
(+)
25Vdc
(approx.)
()
D.U.T.
NON-
INDUCTIVE
OSCILLISCOPE
(NOTE 1)
() 0
PULSE
GE(NNOETREAT2O) R-0.25A
(+)
NOTES: 1. Rise Time= 7ns max., Input Impedance= 1 megohm.22pF.
2. Rise Time= 10ns max., Source Impedance= 50 ohms.
-1.0A
trr
|
|
|
|
|
|
|
|
10
1.0
.1
Tc=100OC
Tc=75OC
Tc=50OC
Tc=25OC
1cm
SET TIME BASE FOR
50 / 10ns / cm
.01
0
20 40 60 80 100 120 140
PERCENT OF RATED PEAK REVERSE VOLTAGE,(%)
Document ID : DS-11H18
2 Revised Date : 2014/02/05
Revision : C2

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UT20005CT THRU UT2008CT
20A High Power Ultra Fast Rectifiers
CITC reserves the right to make changes to this document and its products and specifications at any
time without notice.
Customers should obtain and confirm the latest product information and specifications before final
design, purchase or use.
CITC makes no warranty, representation or guarantee regarding the suitability of its products for any
particular purpose, nor does CITC assume any liability for application assistance or customer product
design.
CITC does not warrant or accept any liability with products which are purchased or used for any
unintended or unauthorized application.
No license is granted by implication or otherwise under any intellectual property rights of CITC.
CITC products are not authorized for use as critical components in life support devices or systems
without express written approval of CITC.
http://www.citcorp.com.tw/
Tel:886-3-5600628
Fax:886-3-5600636
Add:Rm. 3, 2F., No.32, Taiyuan St., Zhubei City, Hsinchu County 302, Taiwan (R.O.C.)
3
Document ID : DS-11H18
Revised Date : 2014/02/05
Revision : C2