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SCK08-30X Dataheets PDF



Part Number SCK08-30X
Manufacturers NTC
Logo NTC
Description NTC Power Thermistor
Datasheet SCK08-30X DatasheetSCK08-30X Datasheet (PDF)

w w w D .a S th c k e o r . e t NTC POWER THERMISTOR, SCK SERIES Meritek Thermal dissipation coefficient( δ ) The thermal dissipation coefficient is the ratio, normally expressed in milliwatts per degree C (mW/oC), at a specified ambient temperature, of a change in power dissipation in a thermistor to the resultant body temperature change. (δ =VXI/∆T) Surge energy Surge energy is the maximum energy of pulses. The thermistor is capable of tolerating surge energy more than 1000 times with the r.

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w w w D .a S th c k e o r . e t NTC POWER THERMISTOR, SCK SERIES Meritek Thermal dissipation coefficient( δ ) The thermal dissipation coefficient is the ratio, normally expressed in milliwatts per degree C (mW/oC), at a specified ambient temperature, of a change in power dissipation in a thermistor to the resultant body temperature change. (δ =VXI/∆T) Surge energy Surge energy is the maximum energy of pulses. The thermistor is capable of tolerating surge energy more than 1000 times with the resistance changing rates within ± 10%. This energy varies with voltage and capacitance. Thermal time constant( t ) The thermal time constant is the time required for a thermistor to change 63.2 percent of total difference between its initial and final body temperature when subjected to a step function change in ambient temperature under zeropower condition and is normally expressed in seconds. Storage temperature range:- 40 to +125 o C o Operating temperature range:- 30 to +125 C DERATING CURVE OF SURGE CURRENT LIMITING THERMISTOR The maximum power of a thermistor will decrease with the change of ambient temperature.(See Fig.G) Material constant(B) The material constant of a NTC thermistor is a measure of its resistance at one temperature compared to its resistance at a different temperature. Its value may be calculated by the formula shown below and is expressed in degrees kelvin (oK ). The reference temperature used in this formula for determining material constant rating of Meritek’s thermistor is 298.15'oK and 323.15 oK B=Ln(R1/R 2)/( 1/T1-1/T2 ) Temperature coefficient of resistance (α ) The temperature coefficient of resistance is the ratio at a specified temperature, T, of the rate of change of zero-power resistance with temperature to the zeropower resistance of the thermistor. The temperature coefficient is commonly expressed in percent per degree C(%/oC). α =I /R dR/dT O.03 w /D w / p : t h a w t s D h p e . d e a f t S h e 4 e U tn / e .t www.DataSheet.co.kr NTC POWER THERMISTOR, SCK SERIES Meritek Zero Power Resistance o at 25 C (Ù) 5 10 20 4 5 6 8 10 15 20 30 2.5 3 3 4 5 8 10 12 12 13 15 16 16 20 25 30 47 50 50 80 100 120 Max. Steady State Current o at 25 C ( A ) 2 1 0.3 2 3 3 2 2 2 1 0.5 5 4 5 4 4 3 3 2 3 3 2.5 2 2.5 2 2 2 2 1.5 2 1 1 1 Approx. Resistance at Max.Current o at 25 C ( mÙ ) 429 1126 5560 441 261 283 520 542 548 1544 4094 120 156 119 161 180 278 297 512 301 356 442 604 442 646 674 700 720 1170 813 2236 2318 2406 Thermal Dissipation Constant o ( mW/ C ) 14 15 14 17 17 17 16 17 15 17 16 18 18 18 16 17 17 17 18 18 18 17 18 16 17 17 17 18 18 18 17 17 19 Thermal Time Constant ( Sec. ) 17 17 22 31 36 38 36 38 38 41 33 46 45 45 40 33 43 46 50 50 49 51 55 45 54 52 50 49 48 48 53 45 54 Operating Temperature o (C ) Part No SCK05-052 SCK05-101 SCK05-20X3 SCK08-042 SCK08-053 SCK08-063 SCK08-082 SCK08-102 SCK08-152 SCK08-201 SCK08-30X SCK10-2R55A SCK10-034 SCK10-035 SCK10-044 SCK10-054 SCK10-083 SCK10-103 SCK10-122 SCK10-123 SCK10-133 SCK10-152X SCK10-162 SCK10-162X SCK10-202 SCK10-252 SCK10-302 SCK10-472 SCK10-501X SCK10-502 SCK10-801 SCK10-1001 SCK10-1201 -40~+150 -40~+150 -40~+150 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 -40~+170 O.4 Datasheet pdf - http://www.DataSheet4U.net/ www.DataSheet.co.kr NTC POWER THERMISTOR, SCK SERIES 13 ∅ & 15 ∅ Max. Steady State Current o at 25 C (A) 7 5 6 5 4 4 4 3 3 3 8 8 8 8 7 6 8 6 7 5 5 8 6 5 5 2 4 4 4 3 3 3 4 3 2.5 2 Approx. Resistance at Max. Current o at 25 C (m Ù) 70 117 94 166 206 217 217 343 348 410 64 62 78 75 91 117 87 121 98 159 161 108 130 178 185 704 261 261 283 425 461 511 360 501 693 1010 Meritek Part No Zero Power Resistance o at 25 C (Ù ) 1.3 2.5 2.5 5 8 10 12 15 16 20 1.3 1.5 2 2.5 3 4 4 5 5 6 7 7 8 10 12 15 15 16 20 25 30 40 40 47 80 120 Thermal Dissipation Constant o ( mW/ C ) 17 17 17 18 17 17 17 18 16 20 21 21 20 20 21 20 27 20 20 20 20 28 20 20 19 21 19 19 18 21 20 22 22 20 19 19 Thermal Time Constant ( Sec. ) 49 61 48 75 65 66 66 66 68 76 59 66 63 63 73 62 76 66 65 74 79 57 68 79 59 77 79 79 90 76 90 83 86 77 71 65 Operating Temperature o (C ) SCK13-1R37 SCK13-2R55 SCK13-2R56 SCK13-055 SCK13-084 SCK13-104 SCK13-124 SCK13-153 SCK13-163 SCK13-203 SCK15-1R38 SCK15-1R58 SCK15-028 SCK15-2R58 SCK15-037 SCK15-046 SCK15-048 SCK15-056 SCK15-057 SCK15-065 SCK15-075 SCK15-078 SCK15-086 SCK15-105 SCK15-125 SCK15-152 SCK15-154 SCK15-164 SCK15-204 SCK15-253 SCK15-303 SCK15-403 SCK15-404 SCK15-473 SCK15-802X SCK15-1202 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -40~+200 -.


SCK08-201 SCK08-30X SCK10-2R55A


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