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Quality

We at CoreStaff Co., Ltd., put an emphasis on delivering quality parts to our customers. Each part is inspected with proven methods before being released for sale.


【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
All parts are checked by an Inspection Specialist

Inspection Points Countermeasures
For all Items  
Checked for part number discrepencies as well as faults.
Ex. Bent pins, oxidation

Inspected by hand by Specialists


Normal goods


Oxidized goods

For parts from the open market  
Check if parts were used

Inspected by microscope


New


Used

Check if parts have been written or not

Inspected by microscope


New


written

Check if items are fake or not

Inspected by microscope,checking of markings and packaging.


Original


Fake


Use of X-ray to compare with orginal samples.
(Corechip, wire bonding, wire pattern, and structure are checked.)


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