UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 3
INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
1. Name and Address of Reporting Person
Tyco International Ltd.
The Gibbons Building
10 Queen Street
Hamilton Bermuda HM11
2. Date of Event Requiring Statement (Month/Day/Year)
06/01/98
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Issuer Name and Ticker or Trading Symbol
Sigma Circuits, Inc. (SIGA)
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)
( ) Director (X) 10% Owner(1) ( ) Officer (give title below) ( ) Other
(specify below)
6. If Amendment, Date of Original (Month/Day/Year)
7. Individual or Joint/Group Filing (Check Applicable Line)
( ) Form filed by One Reporting Person
(x) Form filed by More than One Reporting Person
<TABLE>
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Table I -- Non-Derivative Securities Beneficially Owned |
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1. Title of Security |2. Amount of |3. Ownership |4. Nature of Indirect |
| Securities | Form: | Beneficial Ownership |
| Beneficially | Direct(D) or | |
| Owned | Indirect(I) | |
___________________________________________________________________________________________________________________________________|
<S> <C> <C> <C>
Common Stock | (1) | (1) | (1) |
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Table II -- Derivative Securitites Beneficially Owned |
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1.Title of Derivative |2.Date Exer- |3.Title and Amount | |4. Conver-|5. Owner- |6. Nature of Indirect |
Security | cisable and | of Underlying | |sion or |ship | Beneficial Ownership |
| Expiration | Securities | |exercise |Form of | |
| Date(Month/ |-----------------------|---------|price of |Deriv- | |
| Day/Year) | |Amount |deri- |ative | |
| Date | Expira- | |or |vative |Security: | |
| Exer- | tion | Title |Number of|Security |Direct(D) or | |
| cisable | Date | |Shares | |Indirect(I) | |
___________________________________________________________________________________________________________________________________|
<S> <C> <C> <C> <C> <C> <C> <C>
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
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</TABLE>
Explanation of Responses:
(l) The Reporting Person is a party to a Stockholder Agreement
described in its Tender Offer Statement on Schedule l4d-l, dated
June 5, l998, filed with respect to the Issuer's common stock.
By filing this Form, the Reporting Person does not concede that
it is a beneficial owner of more than l0% of the common stock
of the Issuer.
SIGNATURE OF REPORTING PERSON
/s/ Mark H. Swartz
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Executive Vice President
DATE
6/10/98
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Joint Filer Information
Name: T10 Acquisition Corp.
Address: Tyco International Ltd.
One Tyco Park
Exeter, NH 03833
Designated Filer: Tyco International Ltd.
Issuer & Ticker Symbol: Sigma Circuits, Inc. (SIGA)
Date of Event Requiring
Statement: June 1, 1998
Signature: /s/ Mark H. Swartz
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Mark H. Swartz
Vice President
