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ALPHA® OM340-SL  HIGH RELIABILITY LEAD-FREE SOLDER PASTE 
DESCRIPTION  
ALPHA OM340-SL is a lead-free, halogen free, no-clean solder paste designed for a broad range of applications. ALPHA OM340-SL’s broad processing window is designed to minimize transition concerns from tin/lead to lead free solder paste.  This material is engineered to deliver lead free solder with a very high level of electrical reliability. ALPHA OM340-SL yields excellent print capability performance across various board designs and, particularly, with ultra fine feature repeatability (11 mil Squares) and high “throughput” applications. 
Outstanding reflow process window delivers good soldering on CuOSP with excellent coalescence on a broad range of deposit sizes, excellent random solder ball resistance and mid-chip solder ball performance. ALPHA OM340-SL is formulated to deliver excellent visual joint cosmetics. Additionally, ALPHA OM340-SL’s capability of IPC Class III for voiding and ROL0 IPC classifications ensures maximum long-term product reliability.  

FEATURES & BENEFITS  
 • Maximizes reflow yield for lead-free processing, allowing full alloy coalescence at circular dimensions as small as 0.275mm  

   (0.011”) with 0.100mm (4mil) stencil thickness. 

 • Excellent print consistency with high process capability index across all board designs.  

 • Print speeds of up to 150mm/sec (6”/sec), enabling a fast print cycle time and a high throughput.

 • Wide reflow profile window with good solderability on various board / component finishes.

 • Excellent solder and flux cosmetics after reflow soldering 

 • Reduction in random solderballing levels, minimizing rework and increasing first time yield 

 • Meets highest IPC 7095 voiding performance classification of Class III. 

 • Excellent reliability properties, halide-free material 

 • Halogen free 

 • Compatible with either nitrogen or air reflow  
PRODUCT INFORMATION   
Alloys:   SAC305 (96.5%Sn/3.0%Ag/0.5%Cu)  

            SAC405 (95.5%Sn/4.0%Ag/0.5%Cu)  

            For other alloys, contact your local Cookson Electronics Sales Office.

Powder Size: Type 3, (25-45μm per IPC J-STD-005)

Residues:    Approximately 5% by (w/w)

Packaging Sizes:     500 gram jars, 6” & 12” cartridges, DEK ProFlo TM cassettes, and 10cc and 30cc dispense syringes.

Flux Gel:                OM340-SL Flux Gel is available in 10cc and 30cc syringes for rework applications.

Lead Free:   Complies with RoHS Directive 2002/95/EC.  

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