#CDF CONTROL HOW TO#
#CDF CONTROL FULL#

This situation shows how important it is to confirm the use of critical components in the final product and to inspect the product before shipment from the factory.Ī CDF is a document or series of documents about the internal construction of a product. The V-Trust inspector performed an internal product inspection in time and alerted the customer, otherwise the customer would not have known about the substitution of components. Since the customer did not approve the list of critical components for use in the product, the supplier replaced the PCB in mass-produced earphones. The difference between these two samples meant that the product functionality would be the same, but the battery life of the mass-produced sample would be shorter.ĭuring the inspection of the internal components of the product, it was found that the PCB of the reference sample and the mass production sample were different - different protection system of the boards were used, which was the reason for the low voltage indicators of the mass production sample. The voltage value of the mass produced sample is also lower than the recommended one (4.35 V-2.75 V).

#CDF CONTROL FULL#

To begin with, I will give a real example of checking TWS earphones that did not pass the pre-shipment inspection conducted by V-Trust inspectors.Īt the beginning of this year, we in V-Trust were contacted by a US customer with a request to check the quality of a sample and inspect the mass production of TWS earphones.ĭuring the inspection, the V-Trust inspector found that the earphone voltage at full battery discharge (1.45 V) was significantly lower than that of the confirmed sample (3.26 V). In this article, we will talk in detail about CDF (a component data form) as an important tool for importers of electronics and equipment, its sections and advantages.

#CDF CONTROL HOW TO#

One of the main reasons for problems with products in this category are the quality of their components, assembly, and soldering.Įarlier in our article ' How to set a product’s Quality level for your supplier?' we briefly mentioned CDF as a method for approving the quality of a sample before starting production, along with a list of unacceptable defects and a functionality checklist. Do you place orders for the production of electronics, electrical or technical goods in China? How do you guarantee the quality of your products and their compliance with the required specification and functionality?

Cdf control