MUR405, MUR410, MUR415, MUR420, MUR440, MUR460
NOTE 2 — 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 (IN)
1/8
1/4
1/2
3/4
50
51
53
55
58
59
61
63
28
Units
°C/W
°C/W
°C/W
MOUNTING METHOD 1
P.C. Board Where Available Copper
Surface area is small.
L
L
ÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉ
MOUNTING METHOD 2
Vector Push−In Terminals T−28
L
L
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
MOUNTING METHOD 3
P.C. Board with
1−1/2
″
x 1−1/2
″
Copper Surface
ÉÉ
ÉÉ
ÉÉ
ÉÉ
ÉÉ
ÉÉ
ÉÉ
ÉÉ
L = 1/2
″
Board Ground Plane
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