MMU01020C3903FB300

The production process is strictly controlled and follows an extensive set of instructions to ensure repeatability. A uniform metallic alloy thin film is deposited on a high-grade ceramic body (Al₂O₃) and processed to achieve the desired temperature coefficient. Nickel-plated steel end caps are firmly pressed onto the metallized rod. A special laser is used to smoothly cut a helical groove in the resistive layer to reach the target value without damaging the ceramic. The resistive element is covered with a protective coating for electrical, mechanical, and climatic protection. The end caps receive a final pure matte tin plating. Four or five color bands indicate the resistance value and tolerance in accordance with IEC 60062. Production results are verified through an extensive testing procedure on 100% of individual resistors. This includes comprehensive screening per EN 140401-803 2.1.2.2 for products with resistance values ≥10Ω to eliminate products with the potential risk of early field failures. Only conforming products are loaded directly into blister tape in accordance with IEC 60286-3 Type 2a.

Applications

• Automotive
• Telecommunications
• Industrial
• Medical Devices

Key features

• Compliant with EN 140401-803, IECQ-CECC certified
• AEC-Q200 qualified
• Advanced metal film technology
• Excellent overall stability: better than 0.25 class
• Best-in-class pulse load capability, up to 1500W within 1μs
• Inherent sulfur resistance, PFAS-free
• Material category: see www.vishay.com/doc?99912 for compliance definitions