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LEAA2A Arkusz danych(PDF) 5 Page - OSRAM GmbH |
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LEAA2A Arkusz danych(HTML) 5 Page - OSRAM GmbH |
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5 / 16 page ![]() LE A A2A 2008-07-07 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 16 Typical Thermistor Graph 2) 7) page 16 I F = f (VF); Tboard = 25 °C SMD NTC Thermistors SMD NTC Thermistors R 25 [Ω] No. of R/T characteristic s* 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 Wellenlängengruppen (Dominantwellenlänge) 4) Seite 16 Wavelength Groups (Dominant Wavelength) 4) page 16 Gruppe Group amber Einheit Unit min. max. 3 613 619 nm 4 619 625 nm |
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