MLT MELF MELF Type Linear Positive Temp.Coefficient Resistor Construction C D3 Thermal Sensors THERMAL SENSOR D1 L 3 Coating colorGray Color code3-color bands Insulation coating Trimming line Ceramic core Features D2 Electrode cap Resistive film Marking Dimensions Type Inch Size Code L0.2 C min. D 10.1 D 2 max. D 3 max. 1000pcs 2B 1406 3.5 0.5 1.45 1.55 0.10 24 2E 2309 5.9 0.5 2.20 2.40 0.15 72 T.C.R. RoHS SMD style linear positive temp. metal film resistors. Free direction for mounting due to cylindrical design. The electrode strength is firm. Wide TCRs are available. Superior in the linearity of resistance change to temperature. Suitable for reflow, flow and iron solderings. Products with lead free termination meet RoHS requirements. Dimensionsmm Type Designation Example Old Type New Type MLT 0600 MLT 2B 2B T T 2B:0.125W 2E:0.25W Applications Thermal compensation for motor control circuits T:Sn L:Sn/Pb Taping 1k J 102 J 0600 T.C.R. Nominal Resistance (x10-6/K) Resistance Tolerance TE: TE:Taping BK: BK:Bulk 3 digits G:2% J :5% 4 digits APPENDIX C For further information on taping, please refer to APPENDIX C on the back pages. Reference Standards IEC 60115-1 JIS C 5201-8 TE Terminal Power T.C.R. Product Code (x10-6/K) Rating Surface Material Weightg Ratings Type Power Rating Max. Working Voltage Max. Overload Voltage Rated Ambient Temperature Operating Temp. Range 2B 2E 0.125W 0.25W0 150V 250V 300V 500V 70 -40125 T.C.R. x10-6/K 150250350 450500 600700 800900 100012001400 16001800 200022002400 26002800 30003300 3600 3900 4200 4500 T.C.R. Tolerance 100x10-6/K 150x10-6/K 15 10 Packaging & Q ty (pcs) Box Reel 40,000 3,000 10,000 1,500 T.C.R. and Resistance Range Rasistance Range E24 2B 2E Rasistance Tolerance 51051k 1k100k G:2% 1k43k 2k43k 3k27k 1k10k 8209.1k 8206.2k 105.1k 105.1k 103.3k 10680k 10330k 2k82k 3.9k82k 6.2k51k 3k27k 1k22k 1k18k 107.5k 107.5k 106.2k 101.3k 10680k J:5% x Rated voltage Power RatingxResistance value or Max. working voltage, whichever is lower. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. www.koanet.co.jp Derating Curve Example of Temperature Characteristics of Resistance Percent rated power 80 60 40 20 0 -40 -20 0 20 40 60 70 80 100 120 140 125 Resistance changing rate 100 60 50 40 30 20 10 0 -10 -20 -30 -50 Ambient temperature 70 For resistors operated at an ambient temperature of 70 or above, a power rating shall be derated in accordance with the above derating curve. TCR x10-6/K 4500 3300 2400 1600 -25 0 25 50 75 100 Ambient temperature 125 /50 up Guaranteed temperature range : Room temperature50. Approximate Expression for Resistance-Temperature Characteristics Values are not guaranteed but typical.) RT=R25C0+C1T+C2T2 RTT RTResistance value at T R2525 R25Resistance value at 25 T TAmbient temperature C0, C1, C2Constants C0, C1, C2 T.C.R. (x10-6/K) 3000 3300 3600 3900 4200 4500 C0 C1 C2 0.934 0.927 0.921 0.915 0.909 0.903 0.00258 0.00282 0.00306 0.00330 0.00353 0.00377 2.77x10-6 3.17x10-6 3.58x10-6 4.00x10-6 4.44x10-6 4.89x10-6 Performance Performance Requirements R 0.05 Test Items Test Methods Limit Typical Resistance Within specified tolerance 25 T.C.R. Within specified T.C.R. / 50 up Room temperature50 OverloadShort time 1 0.75 x 2.5 5 Rated voltage x 2.5 for 5s Resistance to soldering heat 1 0.75 2605, 10s1s Rapid change of temperature 1 0.75 -55 30min. /125 30min.5 cycles Moisture resistance 3 2 402, 90%95%RH, 1000h 1.5 ON / 0.5 OFF 1.5h ON / 0.5h OFF cycle 70 Endurance at 70 3 2 702, 1000h 1.5 ON / 0.5 OFF 1.5h ON / 0.5h OFF cycle Precautions for Use RMA Ionic impurities such as flux etc. that are attached to these products or those mounted onto a PCB, negatively affect their moisture resistance, corrosion resistance, etc. The flux may contain ionic substances like chlorine, acid, etc. Please wash them to get rid of these ionic substances especially when using lead-free solder that may contain much of the said substances for improving a wetting characteristic. Using RMA solder or RMA flux, or well-washing is needed. Also, attaching ionic substances such as perspiration, salt etc. by storage environments or mounting conditions/environments negatively affects their moisture resistance, corrosion resistance etc. Please wash them to remove the ionic substances when they are polluted. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. www.koanet.co.jp Thermal Sensors