Sunstone Circuits, has released the newest version of their design software, PCB123. Bottom line, the design process just got easier. Sunstone Circuits
Rework Lead-Free Boards with Leaded Solder
Can boards built with lead-free be reworked with leaded solder? I realize they may not comply with RoHS, but will they be reliable?
Phil Zarrow, ITM Consulting With over 35 years experience in PCB assembly, Phil is one of the leading experts in SMT process failure analysis. He has vast experience in SMT equipment, materials and processes.
Jim Hall, ITM Consulting A Lean Six-Sigma Master Blackbelt, Jim has a wealth of knowledge in soldering, thermal technology, equipment and process basics. He is a pioneer in the science of reflow.
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Situation: In house repair facility for boards from various vendors. A board may bear a ROHS label, but the lead free solder alloy is not known.
What is the best rework procedure? Clean off original solder residue first, or just use any lead free alloy and not worry about the resulting mix?
Julius Madey, NY State Thruway Authority
In your "board talk" concerning repairing lead-free joints with tin-lead, I believe you said, in-part, "If the board is used in a high stress environment then the tin-lead is more reliable but if its a low-stress environment then the lead free repair is more reliable".
If I heard you correctly, could you educate me briefly as to why? I would have thought the repair best suited for a high-stress environment would always be more reliable in any situation. What am I missing here?
Sunstone Circuits, has released the newest version of their design software, PCB123. Bottom line, the design process just got easier. Sunstone Circuits
SMD & through-hole types; others will tally 01005s. A must for inventory control, parts order checking or JIT production. From $389. MOTORIZED or MANUAL. Manncorp
Components encapsulated in plastic or organic compounds are susceptible to moisture damage. So are PCBs, all can cause early field failures. Control MSDs per IPC J-Std-033b.1 and 1601. Super Dry®
Our guidebook should be helpful to anyone who works with bare boards and board assemblies. Dozens of procedures packed with illustrations. Circuit Technology Center
Sunstone Circuits, has released the newest version of their design software, PCB123. Bottom line, the design process just got easier. Sunstone Circuits
Solve manufacturing challenges while networking with hundreds of exhibitors and thousands of peers focused on design, manufacture, assembly and test. Keynote by William Shatner. IPC — Association Connecting Electronics Industries
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Use the form below to submit a comment.
What is the best rework procedure? Clean off original solder residue first, or just use any lead free alloy and not worry about the resulting mix?
Julius Madey, NY State Thruway Authority
If I heard you correctly, could you educate me briefly as to why? I would have thought the repair best suited for a high-stress environment would always be more reliable in any situation. What am I missing here?
Brent Sorensen, Universal Synaptics