MUR240_06 Datasheet, PDF (4/5 Pages) ON Semiconductor – SWITCHMODE TM Power Rectifier

MUR240
NOTE 3. − AMBIENT MOUNTING DATA
Data shown for thermal resistance, junction−to−ambient
(R_qJA) for the mountings shown is to be used as typical
guideline values for preliminary engineering or in case the
tie point temperature cannot be measured.
TYPICAL VALUES FOR R_qJA IN STILL AIR
Mounting
Method
1
2
R_qJA
3
Lead Length, L
1/8 1/4 1/2
52 65 72
67 80 87
50
Units
°C/W
°C/W
°C/W
MOUNTING METHOD 1
L
L
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
MOUNTING METHOD 2
ÉÉÉÉ^L ÉÉÉÉÉ^LÉÉÉ
Vector Pin Mounting
MOUNTING METHOD 3
ÉÉ L = 3/8″
ÉÉÉÉÉÉÉÉ _{Board Ground Plane}
ÉÉÉÉ _{P.C. Board with}
1−1/2″ X 1−1/2″ Copper Surface
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4