NTC Military Grade Thermistors Military Grade Leaded Thermistors hese high-rel thermistors are suitable for critical applications in temperature measurement, temperature control, amplifier stabilization, power control, microprocessor interfacing, and numerous other applications. As the industry leader in Mil-Spec devices, we have a part to fill any need. T Style RTH06 MIL-PRF-23648/1 Qualified Note: Dimension in inches, (millimeters in parentheses) Style RTH44 MIL-PRF-23648/20 Qualified Ordering Information R T H 0 6 B S 10 3 F 100 25°C 80 Tolerance Code Number of Zeros 1st 2 Resistance Digits S = Solderable Leads Ratio Per Table 2 Style 40 20 125°C 0 -.55 -.20 0 20 40 80 120 140 160 Tolerance Options: K = 10% J = Ambient Temperature (°C) STYLE RESISTANCE (OHMS) RANGE AVAILABLE RESISTANCE RATIO DISSIPATION CONSTANT MIN-MAX 5% G = 2% F = THERMAL TIME CONSTANT POWER RATING @ 25C MIL-PRF-23648 RESISTANCE RATIO MAX. SECONDS (derating per Table 1) R(25C)/R(125C) RTH06 68-560 680-4700 7.5K-75K A B C 5mW/C 5mW/C 5mW/C 80 80 80 0.5 Watts 0.5 Watts 0.5 Watts 19.8 29.4 48.7 RTH44 300-3000 1000-10K 15K-500K A B C 2mW/C 2mW/C 2mW/C 25 25 25 0.2 Watts 0.2 Watts 0.2 Watts 19.8 29.4 48.7 TABLE 2 Resistance Temperature Characteristics Multipliers TEMPERATURE (°C) –55 –15 0 25 50 75 100 125 RATIO 19.8 (A) 54.790 5.770 2.850 1.000 .405 .184 .0923 .0503 800-554-4784 1% RATIO 29.4 (B) 100.00 7.380 3.270 1.000 .360 .148 .0675 .0340 www.thermistor.com RATIO 48.7 (C) – 8.800 3.660 1.000 .3200 .1160 .0470 .0205 T H E R M I S T O R S 60 N T C Percent of Maximum Power TABLE 1 Derating Curve for High Ambient Temperatures 21