Temperature Measurement Miniature Sensors B57861 S 861 Applications ● Heating systems ● Industrial electronics ● Automotive electronics Features ● ● ● ● ● Fast response High measuring accuracy Different tolerances available Epoxy resin encapsulation PTFE-insulated leads of silver plated nickel wire, AWG 30 Options Dimensions in mm Approx. weight 60 mg Non-standard lead lengths Climatic category (IEC 68-1) Max. power at 25 °C Resistance tolerance Rated temperature B value tolerance Dissipation factor (in air) Thermal cooling time constant (in air) Heat capacity Type R25 P25 ∆R/RN TN ∆B/B δth τc Cth No. of R/T characteristic Ω S 861/2 k/+ 40 S 861/3 k/+ 40 S 861/5 k/+ 40 S 861/10 k/+ 40 S 861/30 k/+ 40 S 861/50 k/+ 40 S 861/100 k/+ 40 2k 3k 5k 10 k 30 k 50 k 100 k 1008 8016 8016 8016 8018 2901 2014 55/155/56 60 ± 1 %, ± 3 %, ± 5 % 25 ±1% approx. 1,5 approx. 15 approx. 22,5 mW °C mW/K s mJ/K B25/100 Ordering code K 3560 3988 3988 3988 3964 3760 4540 B57861-S202-+40 B57861-S302-+40 B57861-S502-+40 B57861-S103-+40 B57861-S303-+40 B57861-S503-+40 B57861-S104-+40 +: F for ∆R/RN = ± 1 % H for ∆R/RN = ± 3 % J for ∆R/RN = ± 5 % Siemens Matsushita Components 55 B57861 S 861 Reliability data Remarks < 1 %/ < 2 % 1) No visible damage <1% No visible damage Standard Storage in dry heat IEC 60068-2-2 Storage in damp heat, steady state IEC 60068-2-3 Storage at upper category temperature T: 155 °C t: 1000 h Temperature of air: 40 °C Relative humidity of air: 93 % Duration: 56 days Rapid temperature cycling IEC 60068-2-14 Lower test temperature: – 55 °C Upper test temperature: 155 °C < 0,5 % Number of cycles: 10 No visible damage Temperature: + 70 °C Duration: 10 000 h No visible damage Long-term stability (empirical value) Test conditions ∆R25/R25 (typical) Test <2% 1) For B57861-S302-+40 56 Siemens Matsushita Components