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LEATBA2A 数据表(PDF) 5 Page - OSRAM GmbH |
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LEATBA2A 数据表(HTML) 5 Page - OSRAM GmbH |
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5 / 17 page ![]() LE ATB A2A 2008-12-15 5 R T = NTC resistance in Ω at temperature T in K R N = NTC resistance in Ω at rated temperature TN in K (T N = 298 K for test condition) T, T N = temperature in K e = base of the natural logarithm (e = 2.71828) B = B value, material specific constant of the NTC thermistor Typische Thermistor Kennlinie 2) 7) Seite 17 Typical Thermistor Graph 2) 7) page 17 I F = f (VF); Tboard = 25 °C SMD NTC Thermistors SMD NTC Thermistors R 25 [Ω] No. of R/T characteristics* B 25/50 [K] B 25/85 [K] Resistance Tolerance Δ R N/RN B value Tolerance Δ B/B 10k EPCOS 8502 3940 3980 ± 5% ± 3% * for further information please visit www.epcos.com R T R N e B 1 T --- 1 T N ------ – ⎝⎠ ⎛⎞ ⋅ ⋅ = BB NT ⁄ TT N ⋅ TT N – ---------------- R N R T ------- ln ⋅ == 0 0˚C T R Ω OHL02609 NTC 1000 2000 3000 4000 5000 6000 7000 10000 10 20 30 40 50 60 70 90 |
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