B57220

Temperature Measurement Leadless Disks Applications I Automotive electronics, e.g. B57220 K 220 – measurement of cooling water and oil temperature Features I Thermistor disk with lapped, coplanar front surfaces I Front surfaces silver-plated I For clamp contacting I UL approved type (up to 125 °C operating temperature) Termination D = 2,9 ± 0,3 mm L = 1,3 ± 0,3 mm Approx. weight 50 mg Options Alternative resistance ratings, rated temperatures and resistance tolerances available on request Delivery mode Bulk Climatic category (IEC 60068-1) Max. power at 25 °C Resistance tolerance Rated temperature B value tolerance Dissipation factor (in air) Thermal cooling time constant (in air) Heat capacity P25 ∆R N/R N TN ∆B/B δth1) τc1) Cth1) 55/250/21 180 ±5% 20 ± 1,5 % approx. 2,5 approx. 12 approx. 30 mW °C mW/K s mJ/K R 20 R25 No. of R /T characteristic 1008 B25/100 K 3560 Ordering code Ω 2,5 k Ω 2056,9 B57220K0212A003 1) Depends on mounting situation 66 05/02 Temperature Measurement Leadless Disks Reliability data Test Storage in dry heat Storage in damp heat, steady state Rapid temperature cycling Endurance Long-term stability (empirical value) Standard IEC 60068-2-2 IEC 60068-2-3 Test conditions Storage at upper category temperature T: 250 °C t: 1000 h Temperature of air: 40 °C Relative humidity of air: 93 % Duration: 21 days B57220 K 220 ∆R 25/R25 (typ.) Remarks <3% No visible damage No visible damage No visible damage No visible damage No visible damage ...