Datasheet

UNISONIC TECHNOLOGIES CO., LTD
SFR1020C
DIODE
ULTRA-FAST RECOVERY
RECTIFIER DIODES

DESCRIPTION
UTC SFR1020C is dual center tap rectifier suited for high
frequency Switching Mode PowerSupplies applications.

FEATURES
* High Surge Current Capability
* Suited For Smps, DC ~ DC Converters
* Low Forward And Reverse Recovery Time
* Low Losses

CONNECTION DIAGRAM

ORDERING INFORMATION
Order Number
Lead Free
Halogen Free
SFR1020CL-TA3-T
SFR1020CG-TA3-T
Note: Pin Assignment: A: Anode K: Cathode

Package
TO-220
Pin Assignment
1
2
3
A1
K
A2
Packing
Tube
MARKING
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Copyright © 2016 Unisonic Technologies Co., Ltd
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SFR1020C

DIODE
ABSOLUTE MAXIMUM RATING (limiting values, per leg)
PARAMETER
SYMBOL
RATINGS
UNIT
Repetitive Peak Reverse Voltage
VRRM
200
V
RMS Forward Current
IF(RMS)
10
A
Average Forward Current δ= 0.5
IF(AV)
5
A
TC=125°C (Per leg)
Surge Non Repetitive Forward Current, tp=10ms Sinusoidal
IFSM
50
A
Storage temperature range
Tstg
-60 ~ +150
°C
Note 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. The device is guaranteed to meet performance specification within 0°C~70°C operating temperature range
and assured by design from –20°C~85°C.

ELECTRICAL CHARACTERISTICS (per leg)
PARAMETER
Reverse Leakage Current
(Note1)
Forward Voltage Drop
(Note2)
SYMBOL
IR
VF
TEST CONDITIONS
TJ = 25°C
VR = VRRM
TJ = 100°C
TJ = 25°C
IF = 5 A
TJ = 125°C
IF = 5 A
MIN
TYP
0.69
Note1. tp = 5 ms, δ< 2 %
2. tp = 380 μs, δ< 2 %
To evaluate the conduction losses use the following equation: P = 0.78× IF(AV) + 0.042 × IF2(RMS)

MAX
50
0.6
0.9
0.74
UNIT
μA
mA
V
V
MAX
40
UNIT
ns
RECOVERY CHARACTERISTICS
PARAMETER
Reverse Recovery Time
SYMBOL
trr
TEST CONDITIONS
TJ= 25°C, IF = 0.5A, VF = 30V, IR = 1A
TJ = 25°C, IF= 1A, dIF/dt = 50 A/μs
Formard Recovery Time
tfr
VR =30V
TJ= 25°C, IF= 1A, dIF/dt = 50 A/μs
VFP
Note: When diodes 1 and 2 are used simultaneously :
∆TJ (diode 1) = P(diode 1)×Rth(j-c)( per leg) + P(diode 2) × Rth(c)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
TYP
33
ns
3
V
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SFR1020C
Forward Voltage Drop Versus Forward Current
(Maximum Values, Per Diode)
50.0
Peak Curren,IM (A)
δ=
0.5
δ=
0.
δ= 1
0.2
TYPICAL CHARACTERISTICS
Average Forward Power
Dissipation,PF (av) (w)

DIODE
Relative Variation Of Thermal Versus Impedance
Junction To Case Versus Pulse Duration
1.0
δ=0.5
10.0
TJ=125°C
δ=0.2
TJ=25°C
1.0
δ=0.1
Single pulse
0.1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Forward Voltage Drop, VFM (V)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
0.1
IE-3
T
δ=tp/T
IE-2
IE-1
Pulse Duration,t (s)
tp
IE+0
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Junction Capacitance, C (pF)
Reverse Recovery Charges, Qrr (nC)
TYPICAL CHARACTERISTICS (Cont.)
Dynamic Parameters:Qrr; IRM (TJ) /
Qrr; IRM (TJ =125°C)
Peak Reverse Recovery Current, IRM (A)

DIODE
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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