RO4350B versus FR-4: choose by the loss budget
RO4350B provides a defined RF material system, while FR-4 is a broad family with many electrical properties
COMPARISONS
Material comparisons
Compare complete constructions against your electrical and manufacturing needs.
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10 topics
RO4350B versus RO4003C
Both materials belong to the RO4000 family, but their electrical values and flame-retardant characteristics differ
RO4350B versus RO3003: construction and process
RO4350B and RO3003 belong to different laminate families
RO4350B versus RT/duroid 5880
RT/duroid 5880 and RO4350B differ in dielectric system and processing requirements
RO4350B versus RO4835 for environmental requirements
Material selection for prolonged exposure should include aging behavior and the intended environment
Standard RO4350B versus LoPro construction
The standard and LoPro options differ in conductor-related construction details
Hybrid versus full RO4350B multilayers
A hybrid and an all-RF-material stackup should be compared by field placement, manufacturability, reliability and total cost
2-layer versus 4-layer RO4350B designs
Two-layer boards can provide simple RF paths and accessible launches
Comparing finishes for a RO4350B RF path
ENIG, immersion silver and OSP should be compared against the same RF geometry, assembly process and environment
An engineer’s RF laminate selection checklist
A good material decision connects a performance requirement to a manufacturable, available construction
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Engineering RFQ worksheet
A Rogers 4350B PCB RFQ Worksheet for Engineering Teams — Specify stackup, tolerances, tests and supplier exceptions in a reviewable RFQ.