Electronics Forum: imm tin (22)

About immersion tin

Electronics Forum | Mon Oct 06 09:55:35 EDT 2003 | davef

While you are waiting for others to reply, search the fine SMTnet Archives on: * immersion and tin * imm and tin

Pcb immersion tin thickness

Electronics Forum | Wed Aug 09 08:06:07 EDT 2006 | davef

See "IPC-4554 Specification for Immersion Tin Plating for Printed Circuit Boards" 3.2.1 Immersion Tin Thickness. The most common reason for solderability issues with the white tin surface coating during multiple thermal excursions is a thin white ti

Technical Library: imm tin (11)

Creating Solder Joint Reliability with SnCu Based Solders Some Practical Experiences

Technical Library | 2009-01-15 00:42:58.0

Tin-silver-copper has received much publicity in recent years as the lead-free solder of choice. SAC305 was endorsed by the IPC Solder Value Product Council in the United States as the preferred option for SMT assembly; most assemblers have transitioned to this alloy for their solder paste requirements. The SAC305 alloy due to its 3.0% content of silver is expensive when compared to traditional 63/37 for this reason many wave assemblers are opting for less costly options such as tin-copper based solders for their wave, selective and dip tinning operations.

Kester

Developing a Reliable Lead-free SMT Process

Technical Library | 2008-01-03 17:50:51.0

Lead-free SMT can be achieved reliably if several process requirements are implemented carefully. Some of the variables to account for are listed below. The most common alloys used in lead-free SMT are tin-silver-copper alloys; these alloys all have a meting range between 217- 220°C. These alloys all melt at higher temperatures than traditional leaded solders such as the 63/37which has a melting point of 183 °C.

Kester

Express Newsletter: imm tin (151)


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