UL gives all Epoxy Molding Powder Compounds a generic 130°C (Class B) operating temperature rating without testing
Recently, we were asked if we could supply a UL-approved class B Epoxy Mold Compound system as bobbin and encapsulation material. Class B means that the material can be run continuously at temperatures of 130°C.
The short answer to the question is that UL gives all Epoxy Molding Compounds a generic 130°C (Class B) operating temperature rating without testing. This is due to the amount of filler SolEpoxy incorporate into the epoxy. Class F (155°C) and Class H (180°C) ratings however, must be tested by our customers on their devices.
List of UL-Approved products
On the following link, there is a list of all of UL approved compounds under reference QMFZ2_E343402. A copy of this list is kept on our server and can be accessed by clicking on the image.
Please visit us at www.caplinq.com to learn more about our whole range of epoxy mold compounds (EMC) including our semiconductor epoxy molding compounds, our industrial-grade epoxy molding compounds with fiberglass, and our Clear optoelectronic epoxy mold compounds (CMC). If you have any other questions about UL-approvals for epoxy mold compounds, please feel free to leave a comment below or don’t hesitate to contact us.