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At DERF, our goal is to establish a long-term relationship with each of our customers. That’s why Quality Assurance is so important to us.

We have spent years developing procedures that address a complete range of quality concerns. From the quality assurance checks performed on the all the product we receive, through our state-of-the-art packing and shipping process, we guarantee that only the best gets delivered to our customers.

Our in-house Technology & Capabilities include:

  • Quantity Verification: VJ Electronix XQuick2 plus
  • Visual Inspection: Keyence VHX 7000N Digital Microscope up to 2000x magnification
  • Dimensional Inspection (non-contact): Keyence VHX 7000N Digital Microscope up to 2000x magnification
  • XFR Lead Finish Evaluation (RoHS, non-RoHS): Fischer Scope X-ray XDAL
  • Decapsulation: Chemical – Nisene JetETCH PRO, Thermal – Paragon Kiln
  • Solderability Testing: MUST System 3 Force curve.
  • Advanced Surface and Lead inspection: Hitachi TM4000Plus  Scanning Electron Microscope
  • Surface test Remarking: Mineral Spirits + Isopropyl Alcohol
  • Surface test Resurface: Acetone
  • Surface test Heated Solvents: 1-Methyl 2 Pyrrolidone
  • Surface test Heated Solvent: Dynasolve 750
  • Passive component basic functional testing
  • Component baking and packaging according to J-STD-033D
electronics quality assurance

Inspection procedures include:

All incoming product is put through a rigorous inventory inspection process before being added to our listed stock.

  • Experienced inspectors, averaging 10 years tenure with DERF
  • On-staff component engineers
  • Rigorous inspections to determine product conformity to manufacturers’ specifications
  • Products that are substandard are rejected and quarantined


Our state-of-the-art warehouse is maintained to the highest standards:

  • Climate controlled
  • ESD certified fulfillment
  • EAR/ITAR compliant
  • Computer controlled inventory location and tracking system

Product Packaging and Shipping

Our experienced shipping department has been trained in packing techniques that meet and exceed industry standards.

  • Moisture controlled, anti-static protective packaging
  • When applicable, we preserve original manufacturer sealed packaging
  • Outbound shipments occur every weekday with United Parcel Service, FedEx and DHL for global delivery.


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