Electrolytic Ni simply doesn't have any P in it. Regards, Vladimir SENTEC Testing Laboratory Inc. 11 Canadian Road, Unit 7. Scarborough, ON M1R 5G1 Tel: (416) 899-1882 Fax: (905) 882-8812 www.sentec.ca -----Original Message----- From: Stephen Ayotte <[log in to unmask]> Sender: TechNet <[log in to unmask]> Date: Tue, 29 May 2012 12:54:56 To: <[log in to unmask]> Reply-To: TechNet E-Mail Forum <[log in to unmask]>, Stephen Ayotte <[log in to unmask]> Subject: [TN] Phosphorus at the BGA pad There has been some discussion recently on the phosphorus level for ENiG. My question is: - for electrolytic nickel and gold deposition - would you expect to find phosphorus at the soldered interface? Thanks. Stephen Ayotte Manufacturing Quality Engineer Bldg. 966 - 2, Office 2J1309 Userid: Stephen Ayotte/Burlington/IBM Internet id: [log in to unmask] Phone: 802 769 4775 ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________