EXHIBIT 4.7


THIS TRUST PREFERRED SECURITY IS A GLOBAL CERTIFICATE WITHIN THE MEANING OF 
THE TRUST AGREEMENT HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF 
THE DEPOSITORY TRUST COMPANY (THE "DEPOSITARY") OR A NOMINEE OF THE 
DEPOSITARY. THIS TRUST PREFERRED SECURITY IS EXCHANGEABLE FOR TRUST PREFERRED 
SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY OR 
ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE TRUST 
AGREEMENT AND NO TRANSFER OF THIS TRUST PREFERRED SECURITY (OTHER THAN A 
TRANSFER OF THIS TRUST PREFERRED SECURITY AS A WHOLE BY THE DEPOSITARY TO A 
NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY 
OR ANOTHER NOMINEE OF THE DEPOSITARY) MAY BE REGISTERED EXCEPT IN LIMITED 
CIRCUMSTANCES. 

UNLESS THIS TRUST PREFERRED SECURITY IS PRESENTED BY AN AUTHORIZED 
REPRESENTATIVE OF THE DEPOSITARY (55 WATER STREET, NEW YORK) TO SVB CAPITAL I 
OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY TRUST 
PREFERRED SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH 
OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITARY AND 
ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE 
HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL INASMUCH AS THE 
REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 

CERTIFICATE NUMBER  P-1         NUMBER OF TRUST PREFERRED SECURITIES:  1,600,000


                             CUSIP NO. 784868 20 0
                                 _____________

              CERTIFICATE EVIDENCING TRUST PREFERRED SECURITIES

                                      OF

                                SVB CAPITAL I

                 8.25% CUMULATIVE TRUST PREFERRED SECURITIES, 
             (LIQUIDATION AMOUNT $25 PER TRUST PREFERRED SECURITY) 

SVB CAPITAL I, a statutory business trust formed under the laws of the State 
of Delaware (the "Trust"), hereby certifies that Cede & Co. (the "Holder") is 
the registered owner of One Million Six Hundred Thousand (1,600,000) Trust 
Preferred Securities of the Trust representing an undivided beneficial 
interest in the assets of the Trust and designated the SVB CAPITAL I 8.25% 
Cumulative Trust Preferred Securities, (liquidation amount $25 per Trust 
Preferred Security) (the "Trust Preferred Securities"). The Trust Preferred 
Securities are transferable on the books and records of the Trust, in person 
or by a duly authorized attorney, upon surrender of this certificate duly 
endorsed and in proper form for transfer as provided in Section 5.4 of the 
Trust Agreement (as defined below). The designations, rights, privileges, 
restrictions, preferences and other terms and provisions of the Trust 
Preferred Securities are set forth in, and this certificate 



and the Trust Preferred Securities represented hereby are issued and shall in 
all respects be subject to the terms and provisions of, the Amended and 
Restated Trust Agreement of the Trust dated as of May 22, 1998, as the same 
may be amended from time to time (the "Trust Agreement"), including the 
designation of the terms of Trust Preferred Securities as set forth therein. 
The Holder is entitled to the benefits of the Guarantee Agreement entered 
into by Silicon Valley Bancshares, a California corporation, and Wilmington 
Trust Company, a Delaware banking corporation, as guarantee trustee, dated as 
of May 22, 1998 (the "Guarantee"), to the extent provided therein. The Trust 
will furnish a copy of the Trust Agreement and the Guarantee to the Holder 
without charge upon written request to the Trust at its principal place of 
business or registered office. 

     Upon receipt of this certificate, the Holder is bound by the Trust 
Agreement and is entitled to the benefits thereunder. 

     IN WITNESS WHEREOF, an Administrative Trustee of the Trust has executed 
this certificate this 22nd day of May, 1998.

                                       SVB CAPITAL I 


                                       By:     /s/ Barbara Kamm
                                               ------------------------------
                                       Name:   Barbara B. Kamm
                                       Title:  Administrative Trustee



                                  ASSIGNMENT

     FOR VALUE RECEIVED, the undersigned assigns and transfers this Trust 
Preferred Security to: 

                       ----------------------------------
       (Insert assignee's social security or tax identification number) 

                       ----------------------------------

                       ----------------------------------
                    (Insert address and zip code of assignee) 


and                              irrevocably                          appoints 

- ---------------------------------------------------------- 

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              ,
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as agent to transfer this Trust Preferred Security Certificate on the books 
of the Trust. The agent may substitute another to act for him or her. 


Date:
       ---------------- 

Signature: 

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(Sign exactly as your name appears on the other side of this Trust Preferred 
Security Certificate) 

The signature(s) should be guaranteed by an eligible guarantor institution 
(banks, stockbrokers, savings and loan associations and credit unions with 
membership in an approved signature guarantee medallion program), pursuant to 
Rule 17Ad-15 of the regulations promulgated under the Securities Exchange Act 
of 1934, as amended.