MLT linear positive tempco melf resistor EU features thermal protection • Free direction for mounting due to cylindrical design • Superior in the linearity of resistance change to temperature • Standard resistance sizes • Meets or exceeds IEC 60115-1 • Marking: Gray body color • Products with lead-free terminations meet EU RoHS and China RoHS requirements dimensions and construction L D3 C Type D1 D2 Insulation Coating Trimming Resistive Line Film Marking Dimensions inches (mm) C D1 D2 (max.) D3 (max.) L (Inch Size Code) 2ES (1406) .138±.008 .02 ~ .035 .055±.004 (3.5±0.2) (0.5 ~ 0.9) (1.4±0.1) .061 (1.55) .004 (0.1) 2E (2309) .232±.008 (5.9±0.2) .094 (2.4) .006 (0.15) .02 (0.5 min.) .087±.004 (2.2±0.1) End Cap Ceramic Core ordering information New Part # MLT 2B Type Size T TE Termination Material T: Sn 2ES: 1406 2E: 2309 101 Nominal Resistance 2 significant figures + 1 multiplier Packaging TE: 7" embossed plastic (2ES - 3,000 pieces/reel) (2E - 1,500 pieces/reel) J 3600 Tolerance T.C.R. J: ±5% applications and ratings Part Designation Resistance Range 2ES (0.125W) Resistance Range 2E (0.25W) 5.1kΩ - 9.1kΩ –– 2800 –– 1kΩ - 4.7kΩ 3000 1kΩ - 4.7kΩ –– 1kΩ - 4.7kΩ 1kΩ - 7.5kΩ T.C.R. (ppm/°C) Max. T.C.R. Tolerance 2000 MLT 3300 ±10% 3600 1kΩ - 5.1kΩ 1kΩ - 6.8kΩ 3900 1kΩ - 3.3kΩ 1kΩ - 6.2kΩ Resistance Tolerance Rated Ambient Temperature Operating Temperature Range J: ±5% 70°C -40°C to +125°C Rated voltage = √Power Rating x Resistance value or Max. working voltage, whichever is lower. For further information on packaging, please refer to Appendix A. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 186 12/16/11 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com MLT linear positive tempco melf resistor environmental applications 80 40 Temperature Rise (°C) 60 % Rated Power 100 60 40 20 0 -40 -20 0 20 40 60 80 70 Ambient Temperature (°C) 3900 3300 2800 20 2000 0 -20 -40 100 120 140 125 thermal protection Temperature Characteristics of Resistance Derating Curve -50 -25 0 25 50 75 100 125 % Rated Power Approximate Expression for Resistance-Temperature Characteristics T.C.R. (x10-6/K) C0 C1 3000 3300 3600 3900 0.9288 0.9232 0.9175 0.9099 0.0028 0.0030 0.0032 0.0035 C2 1.9983 2.9980 4.0000 4.0064 x x x x 10-6 10-6 10-6 10-6 (Values are not guaranteed but typical) RT=R25 (C0+C1T+C2T2) RT: Resistance value at T°C R25: Resistance value at 25°C T: Ambient temperature (°C) C0, C1, C2: Constants Performance Characteristics Parameter Resistance T.C.R. Overload Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70°C Requirement ∆ R ±(% + 0.05Ω) Limit Typical Within regulated — tolerance Within specified — T.C.R. ±1.0% ±0.75% ±1.0% ±0.75% ±1.0% ±0.75% ±3.0% ±2.0% ±3.0% ±2.0% Test Method 25°C Room temperature, 50°C up Rated power x 2.5 or max. overload voltage for 5 seconds, whichever is less 260°C ± 5°C, 10 seconds ± 1 second -55°C (30 minutes), +125°C (30 minutes), 5 cycles 40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 1/06/11 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 187