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Copy of Introduction of MLCC process

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by

LU LE

on 12 July 2013

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Transcript of Copy of Introduction of MLCC process

how to make a MLCC
Introduction of MLCC process
Raw material mixing
Sheet
Casting
Electrode Printing
Stacking
layer
Pressing
Cutting
Sintering
Termination plating
Firing
The map of MLCC process
process inspection
reliability test
Receiving inspection
Every raw materials are evaluated physical properties by QA team
PSD, BET, Viscosity, FOG, Roughness, SEM, XRD, Solid contents etc.
BT Powder
Additive
Dispersant
materials
Binder
Solvent
Green sheet casting
First step of MLCC product
making ceramic sheet layer
[On-roll Cast type] [Off-roll Cast type]
use the stastic power of water
about 60-90MPa

To make the contact more ramming, the process about 30h
And the color of capacitor will become orange (copper color)
Make chamfering for each piece of capacitor to avoid the damage
Termination
Copper facing, the first termination of the capacitor
electroplating process
Uses electrical current to reduce dissolved metal(such as Ni, the anode) cations so that they form a coherent metal coating on object (such as capacitor termination, the cathode)
Performance Test
C,IR
Choose the suitable frequency for C measurement, use the rate voltage for IR
Lab test
Humidity endurance
Thermal shock
Thermal cycle
...
Taping
like cream and print as set size

each time produce one kind of capacitor
Full transcript