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  • QC Department

Quality

Our company, Core Staff Co., Ltd, always focus on coping with high consciousness in order to improve quality of the part
We stop delivering any products that quality level are low by our incoming inspection, mainly coming from open market, and there cannot be delivered to our client.


【Inspection equipment】

Micro-Scope 245 magnifications

Micro-Scope 245 magnifications
(Keyence :VH-5000)

「FAKE BLOCKER」

Fake Blocker
An automatic X-ray checking reel device

CurveTracer

Curve Tracer


THERMOSTATIC TANK

Thermostatic Tank(ESPEC)

IC Opener

IC Opener

Solder Pot

Solder Pot


Fluorescent X-ray

Fluorescent X-ray


TEST
a. The enforcement of the 100% all quantity incoming inspection by the inspection specialist

Inspection Points Countermeasures
1. all items  
Different parts (part number difference) Verify part number by eyes
Ex. Bending pins, oxidization


Normal goods


Oxidized goods

2. parts from open market  
Checking used items (pulled or refurbished)

Inspecting by Micro-Scope


New


Used

Checking whether items have been written or not (put into socket or not) Inspecting by Micro-Scope

* Blanck check if required



New


written

Checking whether items are fake or not

Inspecting by Micro-Scope * Checking markings, surface of the package


Original


Fake


Inspecting by X-Ray compared with original samples
* Checking corechip, wire bonding, pattern of wire, structure of the item


Original


Fake



Original


Fake

Supplier Rank(Supplier Reliability Level)

A-1

Stock from authorized distributor or directly from the MFR.

Failure analysis* and other related documents* can be issued from authorized supplier or the MFR upon request.

(*Needs to be confirmed)

A-2

Stock from authorized distributor or directly from the MFR.

Failure analysis and other related documents CANNOT be arranged.

A-4

CoreStaff’s own stock. EMS, OEM, MFR and/or distributor excess stock.

Includes but not limited to Japanese OEM consignment stock. Quality and availability guaranteed by CoreStaff.

B-1

Supplier’s own stock; EMS, OEM or MFR excess stock.

Reliable supplier, who’s been doing business with CoreStaff for many years.

B-2

Supplier’s partner stock; not their own stock.

Reliable supplier, who’s been doing business with CoreStaff for many years.

C-1

Supplier’s own stock. Secondary supplier with fewer transaction history.

C-2

Supplier’s partner stock; not their own stock. Secondary supplier with less transaction history.


Warranty of quality


1. in stock We offer a 60 day warranty for all parts
2. Items from open marketBased on supplier's warranty

※ However, the warranty will only cover the price of the purchased product, not including shipping, testing, or any other fees.

Facility of Incoming Inspection

  1. 「FAKE BLOCKER」An automatic X-ray checking reel device
  2. X-Ray(Matsusada Precision uB1000)
  3. Micro-Scope 245 magnifications(Keyence VH-5000)
  4. Vaccumed Packing Machine
  5. Precision Digital Scale
  6. Chip counters
  7. Static Electricity Removal Device