jER epoxy resins for packaging formulations
Mitsubishi Chemical Group · Material properties and interface engineering
- Purpose
- Encapsulant and laminate development needs a suitable epoxy resin base, followed by evaluation of curing, adhesion and thermomechanical behavior in the complete formulation.
- Technical approach
- jER resins react with hardeners to form a crosslinked network. Fillers, flexibilizers and diluents can be used to adjust formulation properties.
- Scope of use
- Mitsubishi lists encapsulant and laminate uses; selection depends on the resin grade, hardener and filler combination.
- Limitations and open questions
These evaluation considerations are compiled by BLNKK from public information. They are not supplier guarantees or a mandatory submission checklist.
Scope and limitationsjER is a resin family, not a finished adhesive qualified for the intended package. The reviewed pages do not establish grade-specific Tg, CTE or moisture/reflow interface results; claims for other packaging products cannot be transferred.
What to prepareBLNKK suggests preparing resin/hardener grades, filler loading, cure history, contacting surfaces and Tg/CTE/stress targets, with interface-coupon results before and after moisture exposure and reflow.
Confirm with the supplierConfirm suitable grades, formulation compatibility, processing/cure conditions and available physical-property and moisture-conditioned interface data. Agree sample tests and reliability acceptance criteria.
- Public evidence
- The jER page describes resin types and curing, while the separate packaging-materials page identifies encapsulant and laminate applications.
Supporting references
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BLNKK organizes information from public sources. A company profile does not imply a documented solution. Applicability still needs confirmation against your samples and engineering conditions.