User manual

Chip Resistor
- 21 -
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Soldering
Our products have Ag electrodes protected by double layer.
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1st Ni Coating
- This prevents Ag electrode from leaching and enhance the bonding with Sn-Pb.
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2nd Sn-Pb Coating
- This is made of Sn 90% and Pb 10% with melting point 213℃ to prevent it from melting
when solder cream melts, and to enhance the bonding.
- Commercial solder creams are made of Sn 63% and Pb 37% with melting point 183℃.
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Cleaning
After Soldering Cleaning, soldering flux & Ionic cleaning liquid should be avoided on product.
If any possibility on product, please take a test before usage.
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Caution for chip resistor separation from PCB
Chip resistor installation on PCB is similar phenomenon on chocolate chip on top of cake.
PCB has enough flexibility on outer force but Chip resistor can be defected without any bending.
(By chip resistor use of Ceramic, solder, metal)
Therefore, when separate from Chip resistor on PCB, be ware of any crack of chip
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Others
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Manual work
- Whenever separate chip resistor from PCB, do n ot re-use the chip r esistor for circuit safety.
C
hip resistor c an be electrical specification change by soldering Iron after separation.
Re-use of separated chip resistor should be prohibited.
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Do not use more than rated voltage.(check the contents on the file)