c. When splitting the PCB board, or insert (remove) connector, or fasten thread after mounting components, care is required so as not to
give any stress of deflection or twisting to the board. Because mechanical force may cause deterioration of the bonding strength of
electrode and solder, even crack of product body. Board separation should not be done manually, but by using appropriate devices.
8.3 Recommended PCB Design for SMT Land-Patterns
When chips are mounted on a PCB, the amount of solder used (size of fillet) and the size of PCB Land-Patterns can directly affect chip
performance (such as Q). And they can also cause other soldering question (such as offset and side lap). Therefore, the following items
must be carefully considered in the design of solder land patterns.
a. Please use the PCB pad and solder paste we recommend, and contact us in advance if they need to be changed.
b. Please use flux contained with resin since the highly acidic (Chlorine content more than 0.2 wt%) or water-soluble one could damage
the insulation film of wires, then causing short circuit of parts.
c. The amount of solder applied can affect the ability of chips to withstand mechanical stresses which may lead to breaking or cracking.
Therefore, when designing land-patterns it is necessary to consider the appropriate size and configuration of the solder pads which in
turn determines the amount of solder necessary to form the fillets.
d. When more than one part is jointly soldered onto the same land or pad, the pad must be designed that each component’s soldering
point is separated by solder-resist.
Recommended land dimensions please refer to product specification.
9. Recommended Soldering Technologies
This product is only for reflow soldering and iron soldering.
9.1 Re-flowing Profile
Peak 260℃max
260℃
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Preheat condition: 150~200℃/60~120sec.
Allowed time above 217C: 60~90sec.
Max temp: 260℃
Max Ramp Up Rate=3℃/sec.
217℃
Max Ramp Down Rate =6℃/sec.
Max time at max temp: 10sec.
Solder paste: Sn/3.0Ag/0.5Cu
Allowed Reflow time: 2 times max.
60~90sec.
200℃
150℃
60~120sec.
25℃
Time 25℃ to Peak= 8 min Max
[Note: The reflow profile in the above table is only for qualification and is not meant to specify board assembly profiles. Actual board
assembly profiles must be based on the customer's specific board design, solder paste and process, and should not exceed the parameters
as the Reflow profile shows.]
9.2 Iron Soldering Profile
3sec. Max.
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Iron soldering power: 30W Max.
Preheat condition: 150℃/60sec.
Soldering tip temperature: 350℃ Max.
Soldering time: 3sec. Max.
350℃
Soldering Iron Power:
Max.30W
Solder paste: Sn/3.0Ag/0.5Cu
Iron Soldering time: 1 time max.
Diameter of Soldering:
Iron 1.0mm max.
Tc ℃
[Note: Take care not to apply the tip of the soldering iron to the terminal electrodes.]
9.3 Maintenance of heat gun (for your reference)
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Power output: 30W
Temperature: 350℃ Max
Heat time: More than 5 seconds heating may cause short circuit of parts.
10. Solder Volume
Solder shall be used not to exceed as shown below.
Specifications subject to change without notice. Please check our website for latest informations.
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