Variscite VHP-VS8M Heat Sink Kit User manual

VHP- V S 8 M H E A T S I N K
VHP-VS8M Data Sheet Rev 1.00, 05/2021
Page, 1 Variscite Ltd.
VARISCITE LTD
VHP-VS8M Heat Sink Kit For:
VAR-SOM-MX8M-PLUS, VAR-SOM-MX8M-MINI
VAR-SOM-MX8M-NANO

VHP- V S 8 M H E A T S I N K
VHP-VS8M Data Sheet Rev 1.00, 05/2021
Page 2 Variscite Ltd.
VARISCITE LTD.
VHP-VS8M Heat Sink
© 2021 Variscite Ltd.
All Rights Reserved. No part of this document may be photocopied, reproduced, stored in a retrieval system, or
transmitted, in any form or by any means whether, electronic, mechanical, or otherwise without the prior written
permission of Variscite Ltd.
No warranty of accuracy is given concerning the contents of the information contained in this publication. To the
extent permitted by law no liability (including liability to any person by reason of negligence) will be accepted by
Variscite Ltd., its subsidiaries or employees for any direct or indirect loss or damage caused by omissions from or
inaccuracies in this document.
Variscite Ltd. reserves the right to change details in this publication without notice. Product and company names
herein may be the trademarks of their respective owners.
Variscite Ltd.
4, Hamelacha Street
Lod
P.O.B 1121
Airport City, 70100
ISRAEL
Tel: [phone]
Fax: [phone]

VHP- V S 8 M H E A T S I N K
VHP-VS8M Data Sheet Rev 1.00, 05/2021
Page 3 Variscite Ltd.
1.Revision History
Revision
Date
Notes
1.00
May 04 2021
Initial –Preliminary

VHP- V S 8 M H E A T S I N K
VHP-VS8M Data Sheet Rev 1.00, 05/2021
Page 4 Variscite Ltd.
2.Heat Sink Kit Content
•1 x heat sink
•1 x thermal pad (fits VAR-SOM-MX8M-PLUS/MINI/NANO)
•4 x M2/10mm screws (different screw drive types may be provided)
3.Heat Sink Assembly
3.1 Attach the thermal pad on top of the i.MX8M-PLUS/MINI/NANO processors in
VAR-SOM-MX8M-PLUS/MINI/NANO.
Make sure that the two plastic covers, on both sides of thermal pads are removed before attaching the
pad (Please see note under section 3.4 for thermal paste option).
3.2 Assemble the heatspreaderon top sideof VAR-SOM-MX8M-PLUS/MINI/NANO. Use the mechanical holes
in order to align the heat spreader to VAR-SOM-MX8M-PLUS/MINI/NANO PCB.
3.3 Insert the M2 screws from the heat spreader top side.
3.4 Tight the head spreader to the VAR-SOM-MX8M-PLUS/MINI/NANO using the supplied screws.
Recommended torque for tightening the screws is ~1in-lb (~0.113N-m).
Place for thermal pad on the
i.MX8M-PLUS/MINI/NANO
processors
(Do not stretch the pad)
Heat Spreader alignment
holes & screws

VHP- V S 8 M H E A T S I N K
VHP-VS8M Data Sheet Rev 1.00, 05/2021
Page 5 Variscite Ltd.
NOTE: due to tolerances of the related components (heat sink, thermal pad, PCB, i.MX8M processor) there
might be a small gap between the heat sink’s stands to the PCB itself. It is highly recommended before
tightening all 4 nuts/screws to push the heat sink on top of the thermal pad so it will be squeezed on the
processor. Only afterwards tighten the top two screws, then the bottom ones close to the SO-DIMM
connector while paying attention when tightening the last screw that there is no extra pressure on the PCB
that might cause it to deform. If you see extra pressure is created on the PCB, you should not tighten the
screw all the way and use Loctite or similar glue to lock the screws. Another alternative is to use thermal
paste (grease) instead of thermal pad which bridges the gap between the processor and the heat sink in
different tolerances of the related components. The thermal pasteshould have similar thermal conductivity
as the thermal pad, 6.0 watt/m-k (by JIS R2618 / ASTM D2326 standard).
Heat Sink assembly sketch

VHP- V S 8 M H E A T S I N K
VHP-VS8M Data Sheet Rev 1.00, 05/2021
Page 6 Variscite Ltd.
4.Contact Information
Headquarters:
Variscite Ltd.
4, Hamelacha Street
Lod
P.O.B 1121
Airport City, 70100
ISRAEL
Tel: [phone]
Fax: [phone]
Sales: [e-mail]
Technical Support: [e-mail]
Corporate Website: www.variscite.com