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These pressure sensitive adhesive backed polyurethane molded shapes are designed for use as spacers (standoffs) that provide fixed height, insulation and board rigidity on printed circuit boards and chassis materials.
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To learn more about 3MTM BumponTM Protective Products,
visit: www.3M.com/Bumpon |
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SJ-67A1
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Cylindrical shape provides design flexibility |
Black, Brown*, White*, Gray* |
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R-25 |
.312 |
.200 |
85 |
10 |
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SJ-67A2
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Hemispherical shape adheres to a wide variety of substrates |
Black, Brown*, White*, Gray* |
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R-25 |
.375 |
.235 |
85 |
10 |
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SJ-67A3
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Highly popular and versatile shape |
Black, Brown*, White*, Gray* |
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R-25 |
.375 |
.250 |
85 |
10 |
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SJ-67A4
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The taller height is ideal for proper spacing between boards |
Black, Brown*, White*, Gray* |
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R-25 |
.375 |
.311 |
85 |
5 |
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SJ-67A6
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Helps safeguard against the possibility of short-circuiting between boards |
Black, Brown*, White*, Gray* |
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R-25 |
.312 |
.215 |
85 |
10 |
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SJ-67A8
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Cylindrical shape is ideal where less height is needed |
Black, Brown*, White*, Gray* |
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R-25 |
.375 |
.135 |
85 |
10 |
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SJ-67A9
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Tallest of the PCB shapes |
Black, Brown*, White*, Gray* |
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R-25 |
.312 |
.388 |
85 |
5 |
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SJ-61A10
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Used to limit vibrations |
Black, Brown*, White*, Gray* |
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R-25 |
.685 |
.470 |
75 |
3 |
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SJ-67A11
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Provides design flexibility over mechanical spacers |
Black, Brown*, White*, Gray* |
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R-25 |
.312 |
.210 |
85 |
10 |
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Key:
Ad = Adhesive
H/D = Hardness/Durometer
Width measured in inches
Height measured in inches
Qty per case measured in thousands unless otherwise specified
* 15% upcharge for brown, white, gray, or available at no additional charge for orders of one million or more parts per color. Custom colors subject to quote.
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Additional Information
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The 6700 series features a harder durometer (85 Shore A), which can also be useful anywhere a harder Bumpon product is needed. The R25 adhesive provides excellent adhesion to printed circuit boards and a variety of chassis materials. 3M features a variety of shape dimensions to accommodate the space available on the chassis/PCB and the soldered joints, as well as to give the correct
Full Text . . .
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3M™ Bumpon™ Protective Product SJ-67A1
This extremely popular cylindrical shape provides design flexibility over mechanical spacers. Designers can place the spacer as needed after the board is assembled and no drilling is required.
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3M™ Bumpon™ Protective Product SJ-67A2
One of the smaller shapes in the line. This hemispherical shape adheres to a wide variety of surfaces.
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3M™ Bumpon™ Protective Product SJ-67A3
The A3 is another highly popular and versatile shape. Slightly smaller in height, the A3 spacer prevent boards from bending and breaking, saving material cost and lost productivity and increasing profits.
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3M™ Bumpon™ Protective Product SJ-67A4
The high performance, synthetic rubber adhesive offers excellent initial and ultimate adhesion to a variety of surfaces including plastics, FR4 and various metal surfaces. The taller height is ideal for providing correct spacing between multi-stack boards
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3M™ Bumpon™ Protective Product SJ-67A6
Another popular and versatile shape, the A6 helps to safeguard against the possiblity of short-circuiting between large multi-stack boards.
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3M™ Bumpon™ Protective Product SJ-67A8
This cylindrical shape is ideal where less height is needed to protect the printed circuit boards.
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3M™ Bumpon™ Protective Product SJ-67A11
Similar to the A1, this very popular shape provides design flexibility over mechanical spacers and is easier to apply, no drilling required.
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