T H E R M A L P R O D U C T S, I N C.
SURFACE MOUNT HEAT SINKS FOR
D-PAK, D
2
PAK AND D
3
PAK PACKAGES
THEORY OF OPERATION:
Heat from the D-PAK, D
2
PAK or D
3
PAK
device is removed indirectly through con-
duction – no direct contact is made to the
SMT device. Principally, the heat generated
by the D-PAK/D
2
PAK/D
3
PAK device is con-
ducted down into the PCB where it is
picked up by a copper drain pad. The drain
pad spreads the heat beyond the
edge of the package to the
point where the heat sink is
mounted to the PCB. The
heat is then conducted
into the copper heat sink
where it is dissipated
into the
surrounding
environment.
• Surface mountable heat sink
• Requires no attachment holes in circuit board
• Low weight: 2.3 grams (D-PAK/TO-252)
3.1 grams (D
2
PAK/TO-263)
3.7 grams (D
3
PAK/TO-268)
• Compatible with automated SMT assembly
operations
• Height of “wings” allows high component
density adjacent to heat sink
Aavid’s surface mount heat sinks come pre-packaged
in a tape & reel format. Dimensions on the tape are
available upon request from our Applications Engi-
neering department.
THERMAL PERFORMANCE
D-PAK
A I R F L OW ( L F M )
T H E R M A L R E S I S TA N C E C A S E - A M B I E N T ( C / W )
S M T D PA K W E B - D E S I G N
T E M P E R AT U R E R I S E A B OV E A M B I E N T ( Ø c a )
0
200
160
200
400
600
800
50
40
30
20
WITHOUT HEAT SINK
120
80
40
0
0
0.5
1.0
1.5
2.0
2.5
WITH HEAT SINK
10
0
3.0
Part Number
573100, 573300
and 573400
Patent Pending
P OW E R ( WAT T S )
THERMAL PERFORMANCE
D
2
PAK
S M T D
2
PA K W E B - D E S I G N
T E M P E R AT U R E R I S E A B OV E A M B I E N T ( Ø c a )
T H E R M A L R E S I S TA N C E C A S E - A M B I E N T ( C / W )
T E M P E R AT U R E R I S E A B OV E A M B I E N T ( Ø c a )
A I R F L OW ( L F M )
THERMAL PERFORMANCE
D
3
PAK
A I R F L OW ( L F M )
0
60
50
40
30
20
10
0
0
200
400
600
WITHOUT HEAT SINK
WITH HEAT SINK
0.5
1.0
1.5
800 1,000 1,200
30
25
20
15
10
5
0
2.0 2.5 3.0
45
35
25
100 200 300 400 500 600 700 800
20
WITHOUT HEAT SINK
15
10
WITH HEAT SINK
15
0
0
0.5
1.0
1.5
2.0
2.5
3.0
P OW E R ( WAT T S )
5
0
P OW E R ( WAT T S )
T H E R M A L R E S I S TA N C E C A S E - A M B I E N T ( C / W )
S M T D
3
PA K W E B - D E S I G N
SURFACE MOUNT HEAT SINKS FOR D-PAK, D
2
PAK AND D
3
PAK PACKAGES
HEAT SINK
DIMENSIONS
Dimensions in inches
(mm in parentheses)
Part No. Heat sinks for
573100 D-PAK (T0-252)
573300 D
2
PAK (TS-263)
573400 D
3
PAK (T0-268)
L
.315
(8.0)
W
H
S
.410
(10.4)
.500
(12.7)
.690
(17.5)
C
.310-.330
(7.8-8.4)
.280-.300
(7.1-7.6)
.280-.300
(7.1-7.6)
.900
.400
(22.9) (10.2)
.500 1.030 .400
(12.7) (26.2) (10.2)
.500 1.220 .400
(12.7) (31.0) (10.2)
RECOMMENDED
Cu HEAT SPREADER
DRAIN PAD
Note: The thickness of the drain pad is
variable depending on the amount of
heat generated by the SMT device,
design, limitations and process. This is
the exposed printed circuit board -
copper layer.
Part No. Heat sinks for
573100 D-PAK (T0-252)
573300 D
2
PAK (TS-263)
573400 D
3
PAK (T0-268)
L
.375
(9.5)
W
.550
(14.0)
.560 .640
(14.2) (16.3)
.560 .830
(14.2) (21.1)
RECOMMENDED
HEAT SINK SOLDER
MASK OPENING
Part No. Heat sinks for
573100 D-PAK (T0-252)
573300 D
2
PAK (TO-263)
573400 D
3
PAK (T0-268)
L
.355
(9.0)
W
1
.530
(13.5)
W
2
.350
(8.9)
.540 .620
.440
(13.7) (15.7) (11.2)
.540 .810
.630
(13.7) (20.6) (16.0)
Quantity per 13” reel
250
250
250
TAPE AND REEL
PACKAGING
Series
573100
573300
573400
573100
573300
573400
Part Number
573100D00010
573300D00010
573400D00010
573100D00000
573300D00000
573400D00000
Tape Specifics
32mm tape width • 16mm pitch
44mm tape width • 24mm pitch
44mm tape width • 24mm pitch
Quantity per bag: 500
Quantity per bag: 500
Quantity per bag: 500
BULK PACKAGING
T H E R M A L P R O D U C T S, I N C.
This data sheet represents only one of a broad range of products we make to cool electronics. Our representatives can help you configure a complete cooling solution
for your individual applications. For assistance, contact any one of them from our web site or at the locations below.
Aavid Thermal Products, Inc. along with Fluent Inc.’s Icepak thermal design software and Applied Thermal Technologies, Inc. thermal design and validation services make up
The Total Integrated Solution for Cooling Electronics™. For more information on how to put our strengths to work for you, visit our web site at: http://www.aavid.com;
Tel: (603) 224-9988, or contact Fluent at: http://www.icepak.com;Tel: (603) 643-2600, or Applied at: http://www.thermalcooling.com;Tel: (603) 666-4100.
For technical assistance, or placing an order, please visit our web-site for the local sales representative:
http://www.aavid.com/reps/index.html
or distributor near you:
http://www.aavid.com/distribs/index.html
Corporate Office - Aavid USA:
143 N. Main Street, Concord, NH 03301 Tel: (603) 224-9988 Fax: (603) 223-1738
International Locations:
Aavid Canada:
440 Hanlon Road,Woodbridge, Ontario, Canada L4L 3P6 Tel: (905) 850-9595 Fax: (905) 850-9599
Aavid Singapore:
No. 5,Woodlands Industrial Park E1, Singapore, 757728 Tel: (65) 362 8388 Fax (65) 362 8588
Aavid Europe:
Unit C Hillbottom Road, Sands Industrial Estate, High Wycombe, Bucks, England HP12 4HS Tel: (44) 1494-474747 Fax: (44) 1494-474748
Aavid Taiwan/Japan:
3F, No. 25, Lane 228, AnKang Road, NeiHu,Taipei, 114 Taiwan, R.O.C. Tel: (886) 2-2793-5677 Fax: (886) 2-2793-3460
PLEASE NOTE: Our customers are reminded that they bear the responsibility for testing Aavid Thermal Products’ products for proposed use. Any information furnished by AAVID is believed
to be accurate and reliable, but our customers must bear all responsibility for use and applications of AAVID products. AAVID MAKES NO WARRANTIES EXPRESSED OR IMPLIED, AS TO
THE FITNESS, MERCHANTABILITY, OR SUITABILITY OF ANY AAVID PRODUCTS FOR ANY SPECIFIC OR GENERAL USES. AAVID SHALL NOT BE LIABLE FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES OF ANY KIND.
All AAVID products are sold pursuant to the AAVID Domestic Terms and Conditions of Sale in effect from time to time, a copy of which shall be furnished upon request (8911A).
Copyright © Aavid Thermal Products, Inc. June 1997 (Revision A). All icons, drawings, illustrations, and trademarks are the property of Aavid Thermal Products, Inc. and may not be reproduced
without express written permission.
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