MMA02040E5100BB100

The production process is strictly controlled and follows a comprehensive set of instructions to ensure repeatability. A uniform thin-film metal alloy is deposited on a high-grade ceramic body (Al₂O₃) and processed to achieve the required temperature coefficient. Nickel-plated steel end caps are firmly pressed onto the metallized rod. A special laser cuts a helical groove smoothly into the resistive layer to achieve the target value without damaging the ceramic. The resistive element is covered by a protective coating to provide electrical, mechanical, and climatic protection. The end caps receive a final pure matte nickel plating. Four (E24 series) or five (E192 series) color bands specify the resistance value and tolerance in accordance with IEC 60062. The results of defined production are verified by an extensive testing procedure performed on 100% of individual resistors. This includes full screening per EN 140401-803, 2.1.2.2 to eliminate products with potential risk of early failure. Only conforming products are loaded directly into blister tape in accordance with IEC 60286-3, type 2a. These resistors are suitable for processing by automatic SMD assembly systems. They are compatible with automatic soldering using wave soldering, reflow soldering, or vapor phase soldering as indicated in IEC 61760-1. The package withstands all cleaning solvents commonly used in the electronics industry, including alcohols, esters, and aqueous solutions. If conformal coatings, potting compounds, and their processes are used, they should be qualified by appropriate methods to ensure long-term stability of the entire system. These resistors are completely lead-free (Pb), and the pure matte tin plating is compatible with both lead-free and lead-containing soldering processes. Good solderability is specified within 2 years after production or requalification; however, excellent solderability has also been demonstrated after long-term storage exceeding 10 years. The permissible storage time is 20 years. Extensive testing has demonstrated that the plating is resistant to tin whisker growth. Vishay acknowledges the following hazardous substance regulatory frameworks: - IEC 62474, Material Declaration for Products of and for the Electrotechnical Industry, and the Declarable Substances List contained therein. - Global Automotive Declarable Substance List (GADSL). - REACH Regulation (1907/2006/EC) and its related Substances of Very High Concern (SVHC) list in the supply chain. The products contain no prohibited substances from the IEC 62474, GADSL, or SVHC lists; see www.vishay.com/how/leadfree for details. Accordingly, the products are in full compliance with the following directives: - 2000/53/EC End-of-Life Vehicles Directive (ELV) and Annex II (ELV II). - 2011/65/EU Restriction of Hazardous Substances Directive (RoHS) and amendment 2015/863/EU. - 2012/19/EU Waste Electrical and Electronic Equipment Directive (WEEE). Vishay is committed to eliminating conflict minerals from its supply chain; see the Conflict Minerals Policy at www.vishay.com/doc?49037 for details. Where applicable, resistors are approved within the IECQ-CECC Electronic Components Quality Assessment System in accordance with Detail Specification EN 140401-803, which references EN 60115-1, EN 60115-8, and various environmental test procedures from the IEC 60068 series. Conformity is demonstrated by the use of the CECC mark as a qualification mark on the packaging label.

Applications

• Automotive
• Telecommunications
• Industrial
• Medical Devices

Key features

• IECQ-CECC certified per EN 140401-803.
• AEC-Q200 qualified.
• Advanced metal film technology.
• Excellent stability: Class 0.05.
• Inherent sulfuration resistance.
• Material category: For compliance definitions, see www.vishay.com/doc?99912.