Chip NTC Thermistor Features • High testing precision • Steady operating for long time • Reflow soldering possible • Short response time Applications • Temperature measurement • Battery chargers • Temperature sensing, protection and compensation in industrial, telecom and consumer applications • Inrush current limiting, e.g.
Chip NTC Thermistor Test and Measurement Procedures Unless otherwise specified, the standard atmospheric conditions for measurement/test as • Ambient Temperature: 20±15℃ • Relative Humidity: 65±20% • Air Pressure: 86 kPa to 106 kPa If any doubt on the results, measurements/tests should be made within the following limits • Ambient Temperature: 20±2℃ • Relative Humidity: 65±5% • Air Pressure: 86 kPa to 106 kPa Inspection Equipment • Visual Examination: 20x magnifier • Resistance value test: Thermistor resist
Chip NTC Thermistor Reliability Test Item Terminal Strength Standard IEC 60068-2-21 Solder the chip to the testing jig (glass epoxy board shown in the right) using eutectic solder. Then apply a force in the direction of the arrow. Size F Duration 0402, 0603 5N 10N 10 ± 1 s 0805 Resistance to Flexure IEC 60068-2-21 Requirements Test Methods and Remarks Solder the chip to the test jig (glass epoxy board shown in the right) using a eutectic solder.
Chip NTC Thermistor Item Standard Solderability IEC 60068-2-58 Resistance to Soldering Heat Temperature Cycling IEC 60068-2-58 IEC 60068-2-14 Test Methods and Remarks • Solder temperature: 245 ± 5℃ • Duration: 10 ± 1s • Solder: Sn/3.0Ag/0.5Cu • Flux: 25% resin and 75% ethanol in weight 1. No visible damage • Solder temperature: 245 ± 5℃ • Duration: 10±1s • Solder: Sn/3.0Ag/0.
Chip NTC Thermistor Notes & Warnings The RND 155QN series thermistors shall not be operated and stored under the following environmental conditions: • Corrosive or deoxidized atmospheres (such as chlorine, sulfurated hydrogen, ammonia, sulfuric acid, nitric oxide and so on) • Volatile or inflammable atmospheres • Dusty condition • Excessively high or low pressure condition • Humid site • Places with brine, oil, chemical liquid or organic solvent • Intense vibration • Places with analogously deleterious cond
Chip NTC Thermistor R-T table Temp. (℃) R_Min (Kohm) R_Cent (Kohm) R_Max (Kohm) Res TOL. Temp. TOL.(℃) -40 3,551.032 3,718.978 3,894.478 4.72% 0.66 -39 3,317.146 3,471.641 3,632.967 4.65% 0.66 -38 3,100.269 3,242.447 3,390.807 4.58% 0.65 -37 2,899.052 3,029.948 3,166.437 4.50% 0.65 -36 2,712.262 2,832.818 2,958.436 4.43% 0.64 -35 2,538.771 2,649.846 2,765.503 4.36% 0.64 -34 2,377.547 2,479.924 2,586.450 4.30% 0.63 -33 2,227.643 2,322.036 2,420.188 4.
Chip NTC Thermistor 2 296.998 303.346 309.798 2.13% 0.41 3 282.219 288.102 294.079 2.07% 0.40 4 268.261 273.713 279.248 2.02% 0.39 5 255.075 260.126 265.251 1.97% 0.38 6 242.613 247.292 252.037 1.92% 0.38 7 230.831 235.165 239.556 1.87% 0.37 8 219.689 223.702 227.765 1.82% 0.36 9 209.148 212.863 216.622 1.77% 0.35 10 199.173 202.610 206.086 1.72% 0.35 11 189.729 192.909 196.123 1.67% 0.34 12 180.787 183.727 186.697 1.62% 0.33 13 172.
Chip NTC Thermistor 48 37.093 37.834 38.585 1.99% 0.51 49 35.640 36.366 37.103 2.03% 0.52 50 34.251 34.963 35.685 2.07% 0.53 51 32.923 33.620 34.329 2.11% 0.55 52 31.654 32.336 33.031 2.15% 0.56 53 30.439 31.107 31.788 2.19% 0.57 54 29.277 29.931 30.597 2.23% 0.59 55 28.165 28.805 29.458 2.26% 0.60 56 27.100 27.727 28.366 2.30% 0.61 57 26.081 26.695 27.320 2.34% 0.63 58 25.105 25.705 26.317 2.38% 0.64 59 24.170 24.758 25.357 2.42% 0.
Chip NTC Thermistor 94 7.176 7.439 7.711 3.66% 1.20 95 6.951 7.208 7.474 3.69% 1.21 96 6.735 6.986 7.247 3.72% 1.23 97 6.527 6.772 7.027 3.76% 1.25 98 6.326 6.566 6.815 3.79% 1.26 99 6.132 6.367 6.610 3.82% 1.28 100 5.945 6.174 6.412 3.85% 1.30 101 5.764 5.989 6.221 3.88% 1.32 102 5.590 5.809 6.037 3.92% 1.33 103 5.421 5.636 5.858 3.95% 1.35 104 5.259 5.469 5.686 3.98% 1.37 105 5.102 5.307 5.520 4.01% 1.39 106 4.950 5.150 5.358 4.
