Ohmite DA-T268-301E-TR Rohs compliant Datasheet

D Series
Heatsink For TO-252, TO-263
and TO-268 devices
Ohmite D Series heatsinks provide an innovative
solution for SMT compatible semiconductors and
resistors. The unique design (Patent Pending) combines tin plated, solderable rods with an aluminum
extruded heat sink body. These rods (or “rollers”)
are mated mechanically to the heatsink by forging to
reduce the thermal resistance between the heatsink
body and the solderable feet.
Specifically designed for use with the increasingly
popular TO-252, TO-263 and TO-268 packages, the
D Series affords the user superior thermal performance over the more common stamped aluminum
heatsinks. By eliminating the staking joint typically
used in stamped heatsinks, the resulting air gap and
thermal “bottle-neck” is also eliminated, while surface area for cooling is maximized with the extruded
fins of the D Series body.
F e at u r e s
• Increased surface areas by 3 times therefore thermal performance up to 300% over the aluminum
stamped heat sinks on markets
• Light weight aluminum construction allows faster
pick and place assembly reducing the manufacturing cycle time
• Radius mounted “Rollers” are designed for maximizing heat transfer from the component and
avoiding the thermal “bottle-neck” seen in stamped
and staked heatsinks.
• Available in bulk packaging or tape & reel (250
units per reel
• RoHS Compliant
H e a t d i ss i p a t i o n
800
Air Velocity (ft./min.)
1000
50
14
12
50
101 & 201
45
10
40
8
35
301
6
30
Case Temp. Rise above
Ambient (oC)
600
TO-252 (D)
TO-263 (D2)
55
Case Temp. Rise above
Ambient (oC)
400
Thermal Resistance from Mounting
Surface to Ambient (oC/watts)
200
2
4
6
8
Heat Dissipated (watts)
400
600
800
1000
12
TO-268 (D3)
45
10
101 & 201
40
8
6
35
30
4
301
25
4
25
200
Final thermal performance
is highly dependent on the
thermal characteristics of
the PCB. It is possible to see
a 50% drop in temp rise in
natural convection with a
thermally improved PCB.
2
2
10
Thermal Resistance from Mounting
Surface to Ambient (oC/watts)
Air Velocity (ft./min.)
60
4
6
8
Heat Dissipated (watts)
10
dimensions
±0.012” / ±0.30mm
Style 10
TO-252 (D)
TO-263 (D2) TO-268 (D3)
1.02"
1.22"
25.91mm
30.9mm
Style 20
1.02"
25.9mm
TO-268 (D3) TO-263 (D2)
1.58"
1.39"
40.2mm
35.2mm
0.50"
0.50"
12.7mm 12.7mm
0.50"
12.7mm
0.40"
10.16mm
0.27"
6.86mm
0.10"
2.54mm
170
Style 30
0.48"REF
12.1mm
0.44" (11.2mm)
0.56" (14.2mm)
TO-252 (D)
TO-263 (D2)
0.64" (16.2mm)
0.76" (19.2mm)
TO-268 (D3)
±0.2mm
0.26"
6.6mm
0.44"
11.1mm
0.56"
14.1mm
0.46"
11.6mm
0.09"
2.3mm
(continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]
0.26"
6.6mm
0.15"
3.7mm
TO-268 (D3)
0.64"
16.2mm ±0.2
TO-263 (D2)
0.44"
11.2mm
0.76"
19.2mm ±0.2
0.56"
14.2mm
D Series
Heatsink For TO-252, TO-263
and TO-268 devices
L a n d Pat t e r n s
Land Patterns for D, D2 and D3
TO-252 (D)
TO-263 (D2)
TO-268 (D3)
0.62" (15.8mm)
0.35" (8.89mm)
0.44" (11.2mm)
0.64" (16.3mm)
0.56"
(14.2mm)
TO-263 (D2)
0.56"
(14.2mm)
0.54"
(13.7mm)
0.06"
(1.40mm)
0.81" (20.6mm)
0.63" (16.0mm)
0.83" (21.1mm)
TO-252 (D)
0.54"
(13.7mm)
0.06"
(1.40mm)
0.076"
TO-252 (D)
(1.94mm)
0.03"
(0.80mm) TO-263 (D2)
Ta p e a n d R e e l
o r d e r i n g i n f o r m at i o n
Reel diameter: 13.00” (330.00mm)
200 pcs. per
K0
P1
0.03"
(0.80mm)
Style
10, 20 or 30
RoHS
Compliant
DA-T263-201E-TR
P0
S0 W
Series Finish
D
A = black anodized
V = degreased
Package
T263 = TO-263
(or TO-252)
T268 = TO-268
Tape & Reel
Length
1 = 0.50"
2, 3, 4 = optional lengths
assigned
sequentially on
customer request
Standard part numbers For D Series
ø D0
Style 10
Style 20
Style 30
D0
1.55mm
1.5mm
1.5mm
K0
10.5mm
12.20mm
11.50mm
P0
4mm
4.0mm
4.0mm
P1
24mm
24mm
24.0mm
S0
40.4mm
40.4mm
52.4mm
W
44mm
44mm
56mm
Removable Kapton
tape on each part
facilitates handling
by automatic pick
and place equipment.
Style 10 tape and
reel only.
Part Number
Description
Packaging
Weight
DV-T263-101E
DA-T263-101E
DV-T263-101E-TR
DA-T263-101E-TR
for
for
for
for
D2
D2
D2
D2
pack,
pack,
pack,
pack,
degreased
black anodized
degreased
black anodized
Bulk
Bulk
Reel
Reel
3.8
3.8
3.8
3.8
g
g
g
g
DV-T268-101E
DA-T268-101E
DV-T268-101E-TR
DA-T268-101E-TR
for
for
for
for
D3
D3
D3
D3
pack,
pack,
pack,
pack,
degreased
black anodized
degreased
black anodized
Bulk
Bulk
Reel
Reel
4.1
4.1
4.1
4.1
g
g
g
g
DV-T263-201E
DA-T263-201E
DV-T263-201E-TR
DA-T263-201E-TR
for
for
for
for
D
D
D
D
D2
D2
D2
D2
DV-T268-301E
DA-T268-301E
DV-T268-301E-TR
DA-T268-301E-TR
for
for
for
for
D3
D3
D3
D3
pack,
pack,
pack,
pack,
degreased
black anodized
degreased
black anodized
Bulk
Bulk
Reel
Reel
DV-T263-301E
DA-T263-301E
DV-T263-301E-TR
DA-T263-301E-TR
for
for
for
for
D2
D2
D2
D2
pack,
pack,
pack,
pack,
degreased
black anodized
degreased
black anodized
Bulk
Bulk
Reel
Reel
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]
or
or
or
or
171
pack,
pack,
pack,
pack,
degreased
black anodized
degreased
black anodized
Bulk
Bulk
Reel
Reel
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