62 siemens matsushita components applications l surface temperature measurement, e.g. on housings and pipes features l high accuracy l easy mounting l good thermal coupling through metal tag l thermistor encapsulated in metal-tag case l ptfe-insulated leads of silver plated nickel wire, awg 30, ? 0,25 mm options alternative resistance ratings, rated temperatures, resistance tolerances and lead lengths available on request 1) depends on mounting situation climatic category (iec 68-1) max. power at 25 c p 25 resistance tolerance d r / r n rated temperature t n b value tolerance d b / b dissipation factor (in air) d th 1) thermal cooling time constant (in air) t c 1) heat capacity c th 1) test voltage ( t = 1 s) 55/125/56 150 2 % 25 1 % approx. 2,6 approx. 28 approx. 73 1 mw c mw/k s mj/k kv type r 25 w no. of r / t characteristic b 25/100 k ordering code m 703/5 k/g40 5 k 8016 3988 b57703-m502-g40 m 703/10 k/g40 10 k 8016 3988 b57703-m103-g40 m 703/30 k/g40 30 k 8018 3964 b57703-m303-g40 dimensions in mm approx. weight 0,8 g tnt0294-b 3,70,1 8,50,5 6,5 max. 0,5 17,51,5 453 61 10 max. awg 30 ni ptfe temperature measurement probe assemblies b57703 m 703
siemens matsushita components 63 reliability data test standard test conditions d r 25 / r 25 (typical) remarks storage in dry heat iec 60068-2-2 storage at upper category temperature t : 125 c t : 1000 h < 1 % no visible damage storage in damp heat, steady state iec 60068-2-3 temperature of air: 40 c relative humidity of air: 93 % duration: 56 days < 1 % no visible damage rapid temperature cycling iec 60068-2-14 lower test temperature: C 55 c upper test temperature: 125 c number of cycles: 10 < 0,5 % no visible damage endurance p max : 150 mw duration: 1000 h < 1 % no visible damage long-term stability (empirical value) temperature: 70 c duration: 10 000 h < 2 % no visible damage b57703 m 703
|
