The Maida Development Company - RoHS Compliance

Maida Development Company's Environmental Statement of RoHS-Compliance for Metal Oxide Varistor Products

Maida Development Company is pleased to provide varistors that are RoHS compliant. This means that Maida Development Company’s metal oxide varistors are complaint with the Restriction of Hazardous Substances (RoHS) regulations of EU Directive 2002/95/EC.

By design Maida Development Company uses only RoHS-compliant raw materials and processing aids in the construction of lead-free varistors. Each such raw material is supported by a vendor-supplied Certificate of Compliance and/or a Certificate of Chemical Assay from an internationally recognized 3rd-party laboratory showing RoHS-compliance. In addition, certificates from 3rd-party laboratories support RoHS-compliance for exemplar samples of homogeneous ceramic elements made by Maida Development Company representing each of the several varistor ceramic formulations in current usage.

The above compilation of vendor-supplied proofs of RoHS-compliance for raw materials, plus third-party Certificates of Analysis showing RoHS-Compliance for the homogeneous ceramic elements manufactured by Maida Development Company, constitute de facto evidence that Maida Development Company's varistor products incorporating only these ingredients are also RoHS-compliant. Statements and Certificates of RoHS-Compliance issued by Maida Development Company are based upon this rationale.

RoHS-compliant varistor part numbers and minimum part markings required for safety agency recognitions will not change. Instead, all packaging containers for RoHS-compliant varistors will bear an established "No-Lead / RoHS Compliant" emblem or label for ease of recognition.

Customers who require or can accept non-RoHS-compliant varistors should contact their sales representative for availability and pricing.

Ceramic elements with fired-on electrodes. Maida Development Company sintered MOV ceramic elements with screen-printed, fired-on electrodes remain lead-free and RoHS compliant.

Lead wires and terminals. Sn/Pb solder-plated hardware of the prior art has been replaced by lead-free pure tin plated copper hardware.

Immersion solder for assembly. The Sn/Pb/Ag alloy previously used has been changed to lead-free Sn/Ag solder or Sn/Ag/Cu solder.

Conformal epoxy coating. Prior art epoxy contained a very minor lead content to facilitate laser marking. An RoHS-compliant epoxy that utilizes the same resin/filler system is now used.

Lead- free RoHS compliant bill-of-materials.. No ingredients or process materials known to contain lead in excess of RoHS limits are added to the MOV components.

Verification of RoHS compliance. . Internationally recognized third-party laboratory assays will be used to detect and report incidental process contamination by any named RoHS materials.

Available Documentation.. . A standardized Material Declaration Data Sheet (MDDS) plus third-party Certificates of Analysis from recognized test labs are available upon request. The third party assay Certificate for finished varistor components may be a generically representative report for an item that closely approximates the construction of the varistor part number(s) requested. As a practical matter the costs of third-party analyses and time delays involved would be prohibitive if applied to each of the thousands of standard and custom designs that Maida offers. The format of the MDDS is in accordance with the Material Composition Declaration Guide and EIA Material Declaration Template sponsored jointly by the Electronic Industry Alliance (EIA), European Industry Association (EICTA), and Japan Green Procurement Survey Standardization Initiative (JGPSSI).

To request a copy of said compilation of vendor-supplied proofs of RoHS-compliance for raw materials and/or third-party Certificates of Analysis of the ceramic elements, please contact your local representative or Maida Development Company directly.