NTC Type JR Chip Thermistor In Eyelet Tag Features • Suitable for surface temperature measurement • Sensing element electrically isolated from tag • Two standard resistance values: 10 kW & 20 kW nominal at 77°F (25°C) • Eyelets to fit M3, M4 & M5 screw sizes • Range of wire lengths 1.97 in to 78.74 in (50 mm to 2000 mm) (dimension WL in diagram on page 2) • Typical applications include semiconductor heatsinks, enclosure panels Amphenol Advanced Sensors Type JR Specifications Description D NTC chip thermistor with insulated flexible wires and housed in an eyelet tag. H Options L • Other resistance - temperature characteristics • Other wire types Data • R25: 10 KW ± 5% (JR103R5MxLxxx) 20 KW ± 5% (JR203R5MxLxxx) WL • B 25/85: 3977 K ± 0.75% • Temperature range: -22°F to 221°F (-30°C to 105°C) 0.197 in (5 mm) ± 0.078 in(2 mm) • Insulation resistance: 500 VDC NTC Type JR dimensions • Wire conductors: Tin-plated copper 7 x 0.1 mm diameter • Wire insulation: Irradiated PVC • Pack quantity and MOQ: 200 pcs Resistance-Temperature Data For JMF942R2L251 Temperature °C -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 Rt/R25 Nominal Ω 9.6807 7.2809 5.5253 4.2292 3.2640 2.5391 1.9902 1.5713 1.2493 1.0000 0.8056 0.6530 0.5325 0.4367 0.3601 0.2985 0.2487 0.2082 0.1751 0.1480 0.1256 0.1070 0.09155 0.07864 0.06781 0.05868 Resistance Tolerance ±% 6.80 6.58 6.35 6.14 5.94 5.74 5.54 5.36 5.18 5.00 5.17 5.34 5.50 5.65 5.81 5.96 6.10 6.24 6.38 6.52 6.65 6.77 6.90 7.02 7.14 7.26 Temperature Tolerance ± °C 1.17 1.17 1.17 1.17 1.16 1.16 1.16 1.15 1.15 1.14 1.21 1.29 1.37 1.45 1.53 1.61 1.69 1.78 1.87 1.96 2.05 2.15 2.24 2.34 2.44 2.54 Type JR Specifications Ordering Information The code number to be ordered may be specified as follows: Code Type JR Chip Thermistor In Eyelet Tag Code R25 and Tolerance 103R5 10 KW ± 5% 203R5 20 KW ± 5% Code Wire Length WL in mm M3 M4 see dimensions below M5 Code Wire length WL in mm L500 50 ± 5 L101 100 ± 10 L201 200 ± 20 L301 300 ± 20 L401 400 ± 20 L501 500 ± 20 L102 1000 ± 50 L152 1500 ± 50 L202 2000 ± 50 JM - ____ - ____ - ____ Typical model number Eyelet size and wire length are specified by the product code: e.g. JR203R5M3L500 Eyelet Dimensions Eyelet size H (mm) M3 3.2 M4 4.3 M5 5.3 D (mm) 6.4 8.5 8.5 L (mm) 12.3 16.8 16.8 Amphenol Advanced Sensors www.amphenol-sensors.com © 2014 Amphenol Corporation. All Rights Reserved. Specifications are subject to change without notice. Other company names and product names used in this document are the registered trademarks or trademarks of their respective owners. AAS-920-352A-04/2014