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(R)
STPS40L40CT/CW
LOW DROP POWER SCHOTTKY RECTIFIER
MAIN PRODUCTS CHARACTERISTICS IF(AV) VRRM Tj (max) VF (max) FEATURES AND BENEFITS LOW FORWARD VOLTAGE DROP MEANING VERY SMALL CONDUCTION LOSSES LOW DYNAMIC LOSSES AS A RESULT OF THE SCHOTTKY BARRIER AVALANCHE RATED DESCRIPTION Dual center tap Schottky barrier rectifier designed for high frequency Switched Mode Power Supplies and DC to DC converters. Packaged in TO-220AB and TO-247 this device is intended for use in low voltage, high frequency inverters, free-wheeling and polarity protection applications. ABSOLUTE RATINGS (limiting values, per diode) Symbol VRRM IF(RMS) IF(AV) IFSM IRRM IRSM Tstg Tj dV/dt *: RMS forward current Average forward current Surge non repetitive forward current Repetitive peak reverse current Non repetitive peak reverse current Storage temperature range Maximum operating junction temperature * Critical rate of rise of reverse voltage Tc = 130C = 0.5 Parameter Repetitive peak reverse voltage 2 x 20 A
A1 K A2
40 V 150 C 0.49 V
A1
K
A2
A2 K A1
TO-220AB STPS40L40CT
TO-247 STPS40L40CW
Value 40 30 Per diode Per device 20 40 230 2 3 - 65 to + 150 150 10000
Unit V A A A A A C C V/s
tp = 10 ms Sinusoidal tp = 2 s square F = 1kHz tp = 100 s square
dPtot 1 < thermal runaway condition for a diode on its own heatsink Rth(j-a) dTj
1/5
July 1999 - Ed: 6A
STPS40L40CT/CW
THERMAL RESISTANCES Symbol Rth (j-c) Rth(c) Junction to case Parameter Per diode Total Coupling Value 1.5 0.8 0.1 Unit C/W C/W
When the diodes 1 and 2 are used simultaneously : Tj(diode 1) = P(diode1) x Rth(j-c)(Per diode) + P(diode 2) x Rth(c) STATIC ELECTRICAL CHARACTERISTICS (per diode) Symbol IR * Parameter Reverse leakage current Forward voltage drop Tests Conditions Tj = 25C Tj = 100C Tj = 25C Tj = 125C Tj = 25C Tj = 125C Pulse test : * tp = 380 s, < 2% To evaluate the conduction losses use the following equation : P = 0.28 x IF(AV) + 0.0105 IF2(RMS) IF = 20 A IF = 20 A IF = 40 A IF = 40 A 0.6 0.42 VR = VRRM 30 Min. Typ. Max. 0.8 70 0.53 0.49 0.69 0.7 Unit mA mA V
VF *
Fig. 1: Average forward power dissipation versus average forward current (per diode).
Fig. 2: Average current versus temperature ( = 0.5, per diode).
ambient
16 14 12 10 8 6 4 2 0
PF(av)(W)
= 0.1 = 0.05 = 0.2 = 0.5
=1
T
IF(av) (A) 0 2 4 6 8
=tp/T
tp
10 12 14 16 18 20 22 24
22 20 18 16 14 12 10 8 6 4 2 0
IF(av)(A)
Rth(j-a)=Rth(j-c)
Rth(j-a)=15C/W
T
=tp/T
tp
Tamb(C) 50 75 100 125 150
0
25
2/5
STPS40L40CT/CW
Fig. 3: Non repetitive surge peak forward current versus overload duration (maximum values, per diode). Fig. 4: Relative variation of thermal impedance junction to case versus pulse duration.
IM(A) 250 225 200 175 150 125 100 75 IM 50 25 0 1E-3
Zth(j-c)/Rth(j-c) 1.0 0.8 0.6
Tc=25C Tc=75C Tc=125C
t
= 0.5
0.4 0.2
= 0.2 = 0.1 Single pulse
T
=0.5
t(s) 1E-2 1E-1 1E+0
tp(s) 1E-3 1E-2
0.0 1E-4
=tp/T
tp
1E-1
1E+0
Fig. 5: Reverse leakage current versus reverse voltage applied (typical values, per diode).
Fig. 6: Junction capacitance versus reverse voltage applied (typical values, per diode).
5E+2 1E+2 1E+1
IR(mA)
Tj=150C Tj=125C
C(nF) 5.0
F=1MHz Tj=25C
1.0
Tj=75C
1E+0 1E-1 1E-2
Tj=25C
VR(V) 0 5 10 15 20 25 30 35 40
VR(V) 0.1 1 2 5 10 20 50
Fig. 7: Forward voltage drop versus forward current (maximum values, per diode).
IFM(A) 200 100
Typical values Tj=150C
10
Tj=125C Tj=75C
Tj=25C
1 0.0
VFM(V) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
3/5
STPS40L40CT/CW
PACKAGE MECHANICAL DATA TO-220AB DIMENSIONS REF.
H2 Dia L5 C L7 L6 L2 F2 F1 L9 L4 F G1 G M E D A
Millimeters Min. Max. 4.40 4.60 1.23 1.32 2.40 2.72 0.49 0.70 0.61 0.88 1.14 1.70 1.14 1.70 4.95 5.15 2.40 2.70 10 10.40 16.4 typ. 13 14 2.65 2.95 15.25 15.75 6.20 6.60 3.50 3.93 2.6 typ. 3.75 3.85
Inches Min. Max. 0.173 0.181 0.048 0.051 0.094 0.107 0.019 0.027 0.024 0.034 0.044 0.066 0.044 0.066 0.194 0.202 0.094 0.106 0.393 0.409 0.645 typ. 0.511 0.551 0.104 0.116 0.600 0.620 0.244 0.259 0.137 0.154 0.102 typ. 0.147 0.151
A C D E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 M Diam.
Cooling method : C Recommended torque value : 0.55m.N Maximum torque value : 0.70 m.N
4/5
STPS40L40CT/CW
PACKAGE MECHANICAL DATA TO-247 DIMENSIONS
V
REF.
Millimeters
Inches 0.203 0.102 0.031 0.055 0.118 0.078 0.094 0.133 0.429 0.620 0.793 0.169 0.728 0.582 1.362 0.216 0.118 5 60 0.143
Min. Typ. Max. Min. Typ. Max.
V Dia.
H
A
L5
L L2 L4 F2 F3 V2 F(x3) G = = M E F4 L3
F1
L1 D
A 4.85 5.15 0.191 D 2.20 2.60 0.086 E 0.40 0.80 0.015 F 1.00 1.40 0.039 F1 3.00 F2 2.00 F3 2.00 2.40 0.078 F4 3.00 3.40 0.118 G 10.90 H 15.45 15.75 0.608 L 19.85 20.15 0.781 L1 3.70 4.30 0.145 L2 18.50 L3 14.20 14.80 0.559 L4 34.60 L5 5.50 M 2.00 3.00 0.078 V 5 V2 60 Dia. 3.55 3.65 0.139
Cooling method : C Recommended torque value : 0.8m.N Maximum torque value : 1.0m.N Ordering type Marking Package TO-220AB TO-247 Weight 2g 4.4g Base qty 50 30 Delivery mode Tube Tube
STPS40L40CT STPS40L40CT STPS40L40CW STPS40L40CW Epoxy meets UL94,V0
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics (c) 1999 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 5/5

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