PC Board Mounting



Shurlock™ Tabs


Factory applied only

The rounded and bifurcated tip of the Shur-Lock™ solderable tab has been designed to easily snap into any 0.093 inch diameter PC Board hole. Once through the hole, the tab provides a positive resistance to backing or falling out of the hole. In addition, the spring action between the tab and the plated through hole prevents leaning or lift-off of the heat sink prior to or during the soldering process. The tip extension of the Shur-Lock™ tab has been designed to protrude less than 0.060 inch beyond the back of a standard .0625 inch PC board, which is below the normal lead trimming allowance for assembled PCBs.
Tab Ordering Code 28
Shurlock Tabs

Product Information
Material Spring Steel
Finish Tin plating over a copper flash
Pull-out Force* (after soldering) 70 lbs/tab (311 N/tab) minimum
Recommended
PCB Hole Diameter 0.092 - 0.096 inch
(2.34 - 2.44 mm)
PCB Thickness 0.065 - 0.068 inch
(1.65 - 1.73 mm)
*Vertical force applied to the sink-tab joint.

Variations of the above specifications are possible. Contact
Aavid Thermalloy for additional details for use with
thicker PCB sizes, such as, .093 inch (2.36 mm) or other hole diameters.




Solderable Mounting Tabs


Heat sinks ordered with solderable mounting tabs have tin-plated spring steel tabs permanantly locked onto the heat sink to provide wave solderability. The solderable tabs are mounted on the heat sink after anodizing, thus eliminating any special coating or handling. The result is a wave solderable heat sink with black anodized performance.     Typical Installation


Figure A



Figure B


Suffix Code Stand-off height "A" Dim "B" Dim Figure
MT 53 5.21 (0.205) 15.88 (0.625) 4.83 (0.190) A
MT2 54 8.51 (0.335) 19.18 (0.755) 8.13 (0.320) A
MT3 55 5.21 (0.205) 15.88 (0.625) 4.83 (0.190) A
MT5 56 5.21 (0.205) 15.88 (0.625) 4.83 (0.190) B
MT6 57 2.92 (0.115) 13.59 (0.535) 2.54 (0.100) B
Ordering Information:
Example 12 digit part:


Example Thermalloy origin part:




Wave-On-Mounts


Solderable mounts can be factory installed to practically every board-mountable heat sink and flat sided extrusion. The female threaded through holes permit preassembly to the semiconductor via machine screws. This allows the heat sink/semiconductor package to be treated as one unit when fitted in PC board thru-holes for wave soldering.

Material PCB Plated Thru-hole PCB Thickness
EA, EG .145 inch
(3.68 mm)
.062 inch
(1.57 mm)
E, EK, EL, EM, ER .187 inch
(4.75 mm)
.090 inch
(2.23 mm)
EH, EP .187 inch
(4.75 mm)
.090 inch
(2.23 mm)
Wave-On Mounts
Code Model
Inches
"A" Dim
Inches
"B" Dim
Inches
"C" Dim
Inches
"D" Dim
Inches
Threaded
through holes
01 E 0.170 0.100 0.100 0.38 #6-32
02 EA 0.135 0.100 0.100 0.38 #4-40
03 EG 0.135 0.100 0.045 0.038 #4-40
04 EH 0.170 0.135 0.100 0.038 #6-32
05 EK 0.170 0.100 0.45 0.038 #6-32
07 EM 0.170 0.100 0.100 0.038 3.5MM
08 EP 0.170 0.135 0.100 0.038 3.5MM
09 ER 0.170 0.100 0.200 0.038 #6-32



Solderable Pins

Factory applied only

Vertically mounted, extruded heat sinks are converted to wave solderable with the addition of solderable roll pins. Roll pins are available with stand-off shoulders in differant heights for easier cleaning after wave soldering.

Dim. A = Stand-off shoulder size available in 1.27mm and 3.175mm
Tin Plated pins
Solderable pins