General Information

PCL-FR-226/240/GE313 laminates and PCL-FRP-226/240/GE313 prepregs are the industry benchmark 140°C glass transition temperature (Tg) FR-4 system for multilayer printed wiring boards (PWB). 226/240/GE313 laminate and prepreg products are manufactured using a precise blend of tetrafunctional and difunctional epoxy resins, reinforced with electrical grade (E-glass) glass fabric. This combination provides an exceptional PWB performance and excellent FR-4 processability due to the superior thermal, mechanical, chemical and moisture resistance properties. The 226/240/GE313 system is also laser fluorescing and UV blocking for maximum compatibility with automated optical inspection systems (AOI), optical positioning systems and photoimagable soldermask imaging.

LAMINATE AVAILABLITY
PCL-FR-226/240/GE313 laminates are available in standard thicknesses, using a variety of glass style constructions, from .002 inches (.05 mm) to .125 inches (3.2 mm). Single ply laminates are available in thicknesses from .002 inches (.05 mm) to .010 inches (.25 mm) and multiple ply laminates are available from .004 inches (.10 mm) to .125 inches (3.2 mm). Standard copper claddings are available from 3/8 ounce (12 micron) to 3 ounce (103 microns). Polyclad's patented DSTFoil® copper foil, traditional copper foil and double treat clad products are available. Single side clad laminates are not available. Other thicknesses and copper claddings can be custom made to meet specific performance requirements.

PREPREG AVAILABILITY
PCL-FRP-226/240/GE313 prepregs are available in a variety of standard E-glass styles. Other non-standard glass styles may be available to meet specific needs. When fully cured 226/240/GE313 prepreg has the same performance attributes as 226/240/GE313 laminate. Standard flow and fill performance parameters designed to meet typical process and application requirements are available. Special performance and no/low flow variations can be custom made for some glass styles for specific applications.

PROCESSING AND STORAGE
226/240/GE313 laminates and prepregs are compatible with and perform excellently using standard FR-4 process techniques. General process recommendation technical bulletins are available from Polyclad. For specific processing guidelines please contact Polyclad Technical Services.

Storage of 226/240/GE313 laminates and prepregs is the same as for all FR-4 materials. Prepregs should be stored at 68±3° F (18±2°C) and 30-50% relative humidity. Prepregs stored below recommended temperatures should be allowed to equilibrate to the above specified conditions for a minimum of eight hours prior to use. More detailed storage recommendation technical bulletins are available from Polyclad.

APPLICABLE SPECIFICATIONS AND RECOGNITIONS
Polyclad's UL file number is E45456. PCL-FR-226/240/GE313 laminate is UL listed under the generic designation PCL-FR- (a)(a) and PCL-FRP-226/240/GE313 prepreg is listed under the generic designation PCL-FRP- (a)(a). 226/240/GE313 laminates and prepregs and PWBs constructed from them are all capable of achieving a UL 94-V0 flammability rating and the highest UL maximum continuous operating temperature for FR-4 grades of 130°C, and are interchangeable from a UL listing standpoint with all Polyclad FR-4 grades. Certain other more specific parts of Polyclad's UL listing may be applicable in some cases. 226/240/GE313 Laminates and prepregs can be certified to IPC-4101A, Specification for Base Materials for Rigid and Multilayer Printed Boards, Specification Sheet IPC-4101A/21. Other industry or customer specific specifications, recognitions or designations may be applicable or certifiable to in certain cases. If you need additional information or have questions, please contact Polyclad Technical Services.