EXHIBIT 5(A) Popular, Inc. P.O. Box 362708 San Juan, Puerto Rico 00936-2708 Telephone (787) 765-9800 September 8, 2004 Popular, Inc., 209 Munoz Rivera Avenue, San Juan, Puerto Rico 00918. Popular North America, Inc., 209 Munoz Rivera Avenue, San Juan, Puerto Rico 00918. Popular North America Capital Trust I, c/o Popular North America, Inc., 209 Munoz Rivera Avenue, San Juan, Puerto Rico 00918. Ladies and Gentlemen: In connection with the registration under the Securities Act of 1933, as amended (the "Act"), of (i) $250,000,000 aggregate liquidation amount of capital securities (the "Capital Securities") representing beneficial ownership interests in Popular North America Capital Trust I (the "Trust"), (ii) $250,000,000 aggregate principal amount of junior subordinated debentures (the "Debentures") to be issued by Popular North America, Inc. (the "Corporation"), (iii) unconditional and irrevocable guarantees (the "Guarantees" and each a "Guarantee") of the obligations of the Trust under the Capital Securities, to be issued by the Corporation, (iv) unconditional and irrevocable guarantees (the "Additional Guarantees" and each an "Additional Guarantee") of the Popular, Inc. Popular North America, Inc. Popular North America Capital Trust I -2- obligations of the Corporation under the Guarantees, to be issued by Popular, Inc. (the "Guarantor") and (v) unconditional and irrevocable guarantees (the "Debenture Guarantees" and each a "Debenture Guarantee") of the obligations of the Corporation under the Debentures, to be issued by the Guarantor, in each case to be offered at prices and on terms to be determined at the time of sale, I, as Counsel to the Guarantor, have examined such corporate records, certificates and other documents, and such questions of law, as I have considered necessary or appropriate for the purposes of this opinion. Upon the basis of such examination, I advise you that, in my opinion: (i) the Guarantor has been duly incorporated and is an existing corporation in good standing under the laws of the Commonwealth of Puerto Rico, and (ii) when the Registration Statement has become effective under the Act, the indenture (the "Indenture") relating to the Debentures and the Debenture Guarantees has been duly authorized, executed and delivered, the terms of the Debentures and the Debenture Guarantees and of their issuance and sale have been duly established in conformity with the Indenture so as not to violate any applicable law or result in a default under or breach of any agreement or instrument binding upon the Corporation or the Guarantor and so as to comply with any requirement or restriction imposed by any court or governmental body having jurisdiction over the Corporation or the Guarantor, the Debentures have been duly executed and authenticated and the Debenture Guarantees have been duly executed, each in accordance with the Indenture, the Debentures have been issued and sold as contemplated in the Registration Statement, the guarantee agreement (the "Guarantee Agreement") relating to the Guarantee and the Additional Popular, Inc. Popular North America, Inc. Popular North America Capital Trust I -3- Guarantee has been duly authorized, executed and delivered, the terms of the Guarantee and the Additional Guarantee and of their issuance have been duly established in conformity with the Guarantee Agreement so as not to violate any applicable law or result in a default under or breach of any agreement or instrument binding upon the Corporation or the Guarantor and so as to comply with any requirement or restriction imposed by any court or governmental body having jurisdiction over the Corporation or the Guarantor, and the Guarantees and the Additional Guarantees have been duly authorized, executed and delivered by the Corporation and the Guarantor, respectively, (i) each of the Debentures and the Guarantees will constitute valid and legally binding obligations of the Corporation, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to or affecting creditors' rights and to general equity principles and (ii) each of the Debenture Guarantees and the Additional Guarantees will constitute valid and legally binding obligations of the Guarantor, enforceable against the Guarantor in accordance with their terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to or affecting creditors' rights and to general equity principles. The foregoing opinion is limited to the Federal laws of the United States, the laws of the State of New York and the Commonwealth of Puerto Rico, and the General Corporation Law of the State of Delaware, and I am expressing no opinion as to the effect of the laws of any other jurisdiction. With respect to all matters of the laws of the State of New York and the General Corporation Law of the State of Delaware, I have Popular, Inc. Popular North America, Inc. Popular North America Capital Trust I -4- relied upon the opinion, dated of even date herewith, of Sullivan & Cromwell LLP, and my opinion is subject to the same assumptions, qualifications and limitations with respect to such matters as are contained in such opinion of Sullivan & Cromwell LLP. Also, I have relied as to certain matters on information obtained from public officials, officers of the Corporation and the Guarantor and other sources believed by me to be responsible. I hereby consent to the filing of this opinion as an exhibit to the Registration Statement and to the reference to me under the heading "Validity of Securities" in the Prospectus. In giving such consent, I do not thereby admit that I am in the category of persons whose consent is required under Section 7 of the Act. Very truly yours, /s/ Brunilda Santos de Alvarez