Kappa® 438 Laminates Data Sheet

PublishTime：2022-08-11

●Specifically formulated to have FR-4 matched dielectric constant (Dk), design transition to Kappa® 438 laminates will be effortless. These laminates also exhibit low loss, tight Dk and thickness tolerances needed to meet the growing performance needs of the wireless market traditionally served by higher end FR-4 materials. Demand for wireless data is growing exponentially, driving a need for substantially higher levels of mobile network capacity and performance. FR-4 was historically a material choice for many less demanding RF applications, but changes in the wireless infrastructure related to growing performance requirements, especially in small cells and carrier-grade Wi-Fi, has resulted in instances where the properties of FR-4 are lacking, and RF performance and consistency is compromised.
●Wireless circuit designers can now realize a true breakthrough with Kappa 438 laminates because they feature the performance of mid-tier circuit materials that extend beyond performance limitations of FR-4, and provide the optimum blend of price, performance, and reliability. Kappa 438 laminates can be fabricated using standard epoxy/glass (FR-4) processes and are compatible with conventional bondplies. These laminates utilize RoHS compliant flame-retardant technology to achieve a UL 94 V-0 flame retardant rating and are lead-free solder process compatible. These materials conform to the requirements of IPC-4103A, slash sheet /250.
●Features and Benefits:
■Glass Reinforced Hydrocarbon Thermoset Platform
◆Ease of PCB manufacturing and assembly in line with FR-4
■Dk Tailored to FR-4 Industry Standard Norms
◆4.38 Dk for ease of transition when upgraded electrical performance is needed over FR-4
■Tighter Dk and Thickness Tolerance than FR-4
◆Consistent circuit performance
■Low Z Axis CTE and High Tg
◆Improved design flexibility, PTH reliability
◆Automated assembly compatible
■Flame Retardant Laminate
◆UL 94 V-0

Brand of Product：	ROGERS
Part#：	Kappa® 438 More Part#
Product Category：	Laminates More
Application：	[ Carrier Grade WiFi/Licensed Assisted Access (LAA) ][ Small Cell and Distributed Antenna Systems (DAS) ][ Vehicle to Vehicle/Vehicle to Infrastructure Communications (V2X) ][ Internet of Things (IoT) Segments ][ Smart Home ][ Wireless Meters ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	072622
Version Number：
Data Encoding：	92-183
Data Size：	891 KB

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