Introduction
Springs are used in combination with push pins or screws to mechanically attach a heat sink and apply a specific load on the thermal interface material.
The following springs are available and can be used to arrive at a target load based on design variables such as board thickness, chip height, and contact area size.
If the available spring selections do not meet with your requirement, please contact Alpha's sales team for further support.
For more details of heat sink attachment, please visit our web page Heat Sink Attachment.
Standard Spring Items
| Code No | OD (mm) | WD (mm) | ID (mm) | FL (mm) | SL (mm) | Spring Rate N/mm [ kgf/mm ] | Material | Surface Finish |
|---|---|---|---|---|---|---|---|---|
| S001YJ03 | 4.6 | 0.45 | 3.7 | 7.9 | 2.7 | 1.92 [ 0.196 ] | SWP-A | Trivalent Chromate |
| S001YJ1B | 4.6 | 0.45 | 3.7 | 11.2 | 3.4 | 1.35 [ 0.138 ] | SWP-A | Trivalent Chromate |
| S001YJ04 | 4.6 | 0.55 | 3.5 | 9.7 | 3.9 | 3.49 [ 0.355 ] | SWP-A | Trivalent Chromate |
| S001YJ0B | 4.6 | 0.60 | 3.4 | 12.7 | 5.3 | 3.43 [ 0.350 ] | SWP-A | Trivalent Chromate |
| S001YJ12 | 4.7 | 0.50 | 3.7 | 11.1 | 3.5 | 1.83 [ 0.187 ] | SWP-A | Trivalent Chromate |
| S001YJ1C | 4.7 | 0.50 | 3.7 | 11.8 | 4.3 | 1.27 [ 0.129 ] | SWP-A | Trivalent Chromate |
| S001YJ1D | 4.8 | 0.55 | 3.7 | 6.4 | 2.9 | 5.19 [ 0.529 ] | SWP-A | Trivalent Chromate |
| S001YJ0G | 5.2 | 0.65 | 3.9 | 7.8 | 3.9 | 6.16 [ 0.628 ] | SWP-A | Trivalent Chromate |
| S001YJ0J | 5.3 | 0.45 | 4.4 | 11.3 | 3.0 | 1.00 [ 0.102 ] | SWP-A | Trivalent Chromate |
| S001YJ0T | 5.3 | 0.55 | 4.2 | 14.3 | 5.7 | 1.59 [ 0.162 ] | SWP-A | Trivalent Chromate |
| S001YJ0R | 5.3 | 0.55 | 4.2 | 19.1 | 5.7 | 1.02 [ 0.104 ] | SUS304-WPB | None |
| S001YJ0A | 5.3 | 0.65 | 4.0 | 6.4 | 3.5 | 7.69 [ 0.784 ] | SWP-A | Trivalent Chromate |
| S001YJ07 | 5.3 | 0.65 | 4.0 | 11.2 | 4.9 | 3.85 [ 0.393 ] | SWP-A | Trivalent Chromate |
| S001YJ0Q | 5.4 | 0.55 | 4.3 | 17.5 | 5.2 | 1.10 [ 0.112 ] | SUS304-WPB | None |
| S001YJ0S | 5.4 | 0.65 | 4.1 | 15.8 | 6.2 | 2.28 [ 0.232 ] | SUS304-WPB | None |
| S001YJ02 | 5.7 | 0.70 | 4.3 | 14.0 | 5.6 | 3.74 [ 0.381 ] | SWP-A | Trivalent Chromate |
| S001YJ09 | 6.0 | 0.50 | 5.0 | 10.0 | 3.3 | 0.92 [ 0.094 ] | SUS304-WPB | None |
| S001YJ1E | 6.0 | 0.80 | 4.4 | 9.7 | 4.0 | 9.47 [ 0.966 ] | SWP-A | Trivalent Chromate |
| S001YJ05 | 6.0 | 1.00 | 4.0 | 12.7 | 7.5 | 14.86 [ 1.515 ] | SWP-A | Trivalent Chromate |
| S001YJ0W | 6.1 | 0.75 | 4.6 | 11.2 | 5.3 | 5.04 [ 0.514 ] | SWP-A | Trivalent Chromate |
| S001YJ0X | 6.1 | 0.75 | 4.6 | 12.7 | 5.9 | 4.24 [ 0.432 ] | SWP-A | Trivalent Chromate |
| S001YJ0D | 6.1 | 0.80 | 4.5 | 7.9 | 3.8 | 11.92 [ 1.215 ] | SWP-A | Trivalent Chromate |
| S001YJ08 | 6.1 | 0.80 | 4.5 | 11.2 | 4.5 | 7.66 [ 0.781 ] | SWP-A | Trivalent Chromate |
| S001YJ1F | 6.1 | 0.90 | 4.3 | 7.9 | 5.3 | 15.78 [ 1.609 ] | SWP-A | Trivalent Chromate |
| S001YJ1G | 6.1 | 0.90 | 4.3 | 19.1 | 9.5 | 5.35 [ 0.546 ] | SWP-A | Trivalent Chromate |
| S001YJ06 | 6.2 | 0.65 | 4.9 | 11.2 | 3.6 | 3.49 [ 0.356 ] | SWP-A | Trivalent Chromate |
Related Information
Push Pin
Attachment Clips, etc ...
Introduction for custom heat sink