<SUBMISSION>
<ACCESSION-NUMBER>0000950135-06-001936
<TYPE>NT 10-K
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20051231
<FILING-DATE>20060330
<DATE-OF-FILING-DATE-CHANGE>20060330
<EFFECTIVENESS-DATE>20060330
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>AAVID THERMAL TECHNOLOGIES INC
<CIK>0001003481
<ASSIGNED-SIC>3679
<IRS-NUMBER>020466826
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>NT 10-K
<ACT>34
<FILE-NUMBER>033-99232
<FILM-NUMBER>06722728
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>ONE EAGLE SQUARE
<STREET2>SUITE 509
<CITY>CONCORD
<STATE>NH
<ZIP>03301
<PHONE>6032241117
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>P O BOX 400
<CITY>LACONIA
<STATE>NH
<ZIP>03247-0400
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>NT 10-K
<SEQUENCE>1
<FILENAME>b58495ntnt10vk.htm
<DESCRIPTION>AAVID THERMAL TECHNOLOGIES, INC.
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<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, DC 20549</B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM 12B-25</B>
</DIV>


<DIV align="right" style="font-size: 10pt; margin-top: 12pt">Commission File Number 0-27308
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 18pt"><B>NOTIFICATION OF LATE FILING</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt">(Check
One): &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT face="Wingdings">&#120;</FONT>&nbsp;&nbsp;Form&nbsp;10-K &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT face="Wingdings">&#111;</FONT> Form&nbsp;11-K &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT face="Wingdings">&#111;</FONT>
Form&nbsp;20-F &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT face="Wingdings">&#111;</FONT>
Form&nbsp;10-Q &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT face="Wingdings">&#111;</FONT>
Form&nbsp;N-SAR
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">For Period Ended: &nbsp; <U>December&nbsp;31, 2005</U>
</DIV>

<DIV align="center">
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    <TD width="10%">&nbsp;</TD>
    <TD width="60%">&nbsp;</TD>
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<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><FONT face="Wingdings">&#111;</FONT> Transition Report on Form&nbsp;10-K<br>
<FONT face="Wingdings">&#111;</FONT> Transition Report on Form&nbsp;20-F<br>
<FONT face="Wingdings">&#111;</FONT> Transition Report on Form&nbsp;11-K
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT face="Wingdings">&#111;</FONT> Transition Report on Form&nbsp;10-Q<br>
<FONT face="Wingdings">&#111;</FONT> Transition Report on Form&nbsp;N-SAR</TD>
</TR>
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</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt">For the
Transition Period Ended: &nbsp;&nbsp;<U>Not Applicable</U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<I>Read attached instruction sheet before preparing form. Please print or type.</I>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Nothing in this form shall be construed to imply that the Commission has verified any
information contained herein.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If the notification relates to a portion of the filing checked above, identify the Item(s) to
which the notification relates: <U> &nbsp;&nbsp;&nbsp; Not Applicable &nbsp;&nbsp;&nbsp; </U>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Part I. Registrant Information</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Full name
of registrant: &nbsp;&nbsp;<U>Aavid Thermal Technologies, Inc. </U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Former
name if applicable: &nbsp;&nbsp;<U>Not Applicable </U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Address of
principal executive office <I>(Street and number): &nbsp;&nbsp;</I><U>One Eagle Square, Suite&nbsp;509 </U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">City,
State and Zip Code: &nbsp;&nbsp;<U>Concord, NH 03301 </U>
</DIV>


<P align="center" style="font-size: 10pt">-1-
</DIV>

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<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Part II. Rule&nbsp;12b-25 (b)&nbsp;and (c)</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If the subject report could not be filed without unreasonable effort or expense and the
registrant seeks relief pursuant to Rule&nbsp;12b-25(b), the following should be completed. (Check
appropriate box.)
</DIV>

<DIV align="left" style="margin-top: 12pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; background: transparent; color: #000000">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD></TD>
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<TR valign="top">
    <TD nowrap align="left"><FONT face="Wingdings">&#120;</FONT>&nbsp;&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>(a)&nbsp;The reasons described in reasonable detail in Part III of this
form could not be eliminated without unreasonable effort or expense;</TD>
</TR>
</TABLE>
</DIV>

<DIV align="left" style="margin-top: 12pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; background: transparent; color: #000000">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left"><FONT face="Wingdings">&#120;</FONT>&nbsp;&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>(b)&nbsp;The subject annual report, semi-annual report, transition report
on Form&nbsp;10-K, 20-F, 11-K or Form&nbsp;N-SAR, or portion thereof will be
filed on or before the 15th calendar day following the prescribed
due date; or the subject quarterly report or transition report on
Form&nbsp;<BR>10-Q, or portion thereof will be filed on or before the fifth
calendar day following the prescribed due date; and</TD>
</TR>
</TABLE>
</DIV>

<DIV align="left" style="margin-top: 12pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; background: transparent; color: #000000">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left"><FONT face="Wingdings">&#111;</FONT>&nbsp;&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>(c)&nbsp;The accountant&#146;s statement or other exhibit required by Rule
12b-25(c) has been attached if applicable.</TD>
</TR>
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Part III. Narrative</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;State below in reasonable detail the reasons why the Form 10-K, 11-K, 20F, 10-Q, N-SAR or the
transition report portion thereof could not be filed within the prescribed time period. (Attach
extra sheets if needed.)
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Company requires additional time to file its Form 10-K as it experienced time delays in
completing the year end financial close due to the pending sale of the Company.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Part IV. Other Information</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;&nbsp;&nbsp; Name and telephone number of person to contact in regard to this notification
</DIV>
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<TR valign="bottom">
    <TD align="center" valign="top">Brian A. Byrne
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(603) 223-1755</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="3" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(Name)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(Area code) (Telephone number)</TD>
</TR>
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</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;&nbsp;&nbsp; Have all other periodic reports required under Section&nbsp;13 or 15(d) of the Securities
Exchange Act of 1934 or Section&nbsp;30 of the Investment Company Act of 1940 during the preceding 12
months or for such shorter period that the registrant was required to
file such<BR>report(s) been
filed? If the answer is no, identify report(s).
</DIV>

<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><FONT face="Wingdings">&#120;</FONT> Yes &nbsp;&nbsp;&nbsp; <FONT face="Wingdings">&#111;</FONT> No
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;&nbsp;&nbsp; Is it anticipated that any significant change in results of operations from the
corresponding period for the last fiscal year will be reflected by the earnings statements to be
included in the subject report or portion thereof?
</DIV>

<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><FONT face="Wingdings">&#111;</FONT> Yes &nbsp;&nbsp;&nbsp; <FONT face="Wingdings">&#120;</FONT> No
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If so, attach an explanation of the anticipated change, both narratively and quantitatively,
and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.
</DIV>

<P align="center" style="font-size: 10pt">-2-
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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center" style="font-size: 14pt; margin-top: 18pt">AAVID THERMAL TECHNOLOGIES, INC.
</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 1pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt">(Name of registrant as specified in charter)</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized.
</DIV>


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<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: March 30, 2006&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/ Brian A. Byrne
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Brian A. Byrne&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Vice President and
Chief Financial Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<I>Instruction. </I>The form may be signed by an executive officer of the registrant or
by any other duly authorized representative. The name and title of the person signing the
form shall be typed or printed beneath the signature. If the statement is signed on behalf
of the registrant by an authorized representative (other than an executive officer),
evidence of the representative&#146;s authority to sign on behalf of the registrant shall be
filed with the form.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>ATTENTION</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Intentional misstatements or omissions of fact constitute Federal criminal violations (<I>see </I>18 U.S.C. 1001).
</DIV>


<P align="center" style="font-size: 10pt">-3-
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