Determining Permissive Change Classification for Encapsulated Radio Modules
Modifications to encapsulated radio modules require Class II permissive change filings whenever conducted power increases or radiated emissions degrade.
C1PCP
Meaning
Formal modification requests for high-reliability assemblies undergo structured classification to manage risk. The c1pcp designates a major product change proposal that alters the form, fit, function, or reliability of an integrated assembly. It requires explicit customer approval before any physical modification begins in the factory.
This document is the primary control mechanism for major component swaps.
Authorization Sequence
Board fabricators must submit extensive documentation when seeking to alter an active module. This action triggers the c1pcp route, which demands mechanical drawings, thermal simulations, and multi-lot sample testing reports. Engineers review the package to ensure the changes do not degrade the overall device performance.
Only when the customer issues a written sign-off can the production line transition to the new material.
Impact Evaluation
Critical components like wireless transceivers or power management units have direct influence on regulatory compliance. A c1pcp tracks these modifications to ensure that the altered unit does not void existing certificates from agencies such as the Federal Communications Commission. Lab staff must repeat specific emission tests to confirm the new configuration meets the original margins.
Failure to perform these steps can lead to product recalls and legal penalties, risking the entire marketing window of the product.
Execution Timeline
Sourcing new parts requires careful coordination to prevent supply line disruptions. The implementation of a c1pcp follows a rigid transition schedule that maintains old inventory until the new variant is fully qualified. Factory managers log the cut-in serial number to trace which boards contain the new components.
This record ensures complete traceability for field failure analyses.