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STPS120M
POWER SCHOTTKY RECTIFIERS
STPS120MMarch 2002-Ed:1A
POWER SCHOTTKY RECTIFIERS Very small conduction losses Negligible switching losses Extremely fast switching Low forward voltage dropfor higher efficiency&
extended batterylife Low thermal resistance
FEATURES AND BENEFITSSingle Schottky rectifier suitedfor switch mode
power supplies and high frequency DCto DC
converters.
PackagedinST Mite, this deviceis intendedfor
usein low voltage, high frequency inverters, free
wheeling and polarity protection applications. Duethe small sizeofthe package this devicefits
battery powered equipment (cellular, notebook,
PDA’s, printers)as well chargers and PCMCIA
cards.
DESCRIPTION
ABSOLUTE RATINGS (limiting values)
MAIN PRODUCT CHARACTERISTICS dPtot
dTj Rthja< − thermal runaway conditionfora diodeonits own heatsink
STPS120MPulsetest: *tp≤ 380μs,δ≤2% evaluatethe conduction lossesusethe following equation:
P=0.34xIF(AV)+ 0.07IF2 (RMS)
STATIC ELECTRICAL CHARACTERISTICS
THERMAL RESISTANCE
STPS120M
PF(av)(W)
Fig. 1:Conduction losses versus average current.
1.2 25 50 75 100 125 150
IF(av)(A)
Fig.2: Average forward current versus ambient
temperature(δ= 0.5)
1.E-03 1.E-02 1.E-01 1.E+00
IM(A)
Fig.3: Non repetitive surge peak forward current
versus overload duration (maximum values).
1.E-04 1.E-03 1.E-02 1.E-01
Zth(j-c)/Rth(j-c)
Fig.4: Relative variationof thermal impedance
junctionto case versus pulse duration.
1.E-04
1.E-03
1.E-02
1.E-01
1.E+00
1.E+01
02468 10 12 14 16 18 20
IR(mA)
Fig.5: Reverse leakage current versus reverse
voltage applied (typical values).
1000 10 100
C(pF)
Fig.6: Junction capacitance versus reverse voltage
applied (typical values).
STPS120M
0.0 0.1 0.2 0.3 0.4 0.5 0.6
IFM(A)
Fig. 7-1: Forward voltage drop versus forward cur-
rent (low level).
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
IFM(A)
Fig. 7-2: Forward voltage drop versus forward cur-
rent (high level)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Rth(j-a)/(°C/W)
Fig.8: Thermal resistance junctionto ambient ver-
sus copper surface undertab (epoxy printed board
FR4,Cu= 35μm).
STPS120M
PACKAGE MECHANICAL DATA Mite
Note: The anodeis connectedtothe longertab
The cathodeis connectedtothe shortertab (heatsink)
FOOTPRINT (dimensions in mm)
STPS120MInformation furnishedisbelievedtobe accurateand reliable. However, STMicroelectronicsassumesno responsibilityforthe consequencesof
use ofsuch informationnor forany infringement ofpatentsor otherrightsofthirdpartieswhichmay result fromitsuse. Nolicenseis grantedby
implicationor otherwise underany patentor patent rightsof STMicroelectronics. Specifications mentionedinthis publicationare subjectto
changewithout notice.This publication supersedesand replaces allinformation previously supplied.
STMicroelectronics productsarenot authorizedforuseas critical componentsinlife support devicesor systems without express writtenap-
provalof STMicroelectronics.
TheST logoisa registered trademarkof STMicroelectronics 2002 STMicroelectronics- PrintedinItaly-All rights reserved.
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