NTC Type BR Series Glass Encapsulated Bead Thermistors Features Type BR11/14/16/25 Type B32/42/55 Small glass encapsulated bead thermistors on fine Large glass encapsulated bead thermistors on fine diameter alloy lead-wires. diameter platinum alloy lead-wires. Suitable for most low cost temperature measurement, control Suitable for most low cost temperature measurement, control or compensation applications or compensation applications Very fast thermal response times Fast thermal response times Rugged glass encapsulation provides hermetic seal and better Rugged glass encapsulation provides hermetic seal and better strain relief than small glass coated bead thermistors strain relief than large glass coated bead thermistors Long term stability is better than small glass coated bead Long term stability is better than large glass coated bead thermistors thermistors Suitable for self-heated applications such as liquid level Suitable for self-heated applications such as liquid level sensing or gas flow measurement sensing or gas flow measurement Recommended for all applications where the customer will Recommended for all applications where the customer will perform further assembly operations perform further assembly operations Normal operating/storage temperatures range from Normal operating/storage temperatures range from -112F (-80C) to: 221F (105C) for Material system E0, 392F -112F (-80C) to: 221F (105C) for Material system E0, 392F (200C) for Material systems A1 through A4, 572F (300C) for (200C) for Material systems A1 through A4, 572F (300C) for Material systems A5 through D17 Material systems A5 through D17 Unaffected by severe environmental exposures, including Unaffected by severe environmental exposures, including nuclear radiation nuclear radiation Intermittent operation to 1112F (600C) is permissible, Intermittent operation to 1112F (600C) is permissible, however, stability will be degraded however, stability will be degraded Amphenol Advanced SensorsType BR Series Specifications Type BR11/14/16/23 Thermal and Electrical Properties The following lists the thermal and electrical properties for all small ruggedized thermistors. All definitions and test methods per MIL-PRF-23648. Body Dimensions BR11 Nominal diameter: 0.011 in (0.28 mm) Maximum diameter: 0.012 in (0.30 mm) Type BR Series dimensions Maximum length: 0.0242 in (0.610 mm) BR14 Nominal diameter: 0.014 in (0.36 mm) Material System (Table A) Maximum diameter: 0.016 in (0.41 mm) Nominal Resistance Range at 77F (25C) Code R vs T 25/125 Maximum length: 0.032 in (0.81 mm) Letter Curve Ratio BR11 BR14 BR16 BR23 E 0 5.0 BR16 A 1 11.8 1 to 1.5 k 300 to 680 300 to 680 300 to 680 Nominal diameter: 0.016 in (0.41 mm) A 2 12.5 1.5 to 3.6 k 680 to 1.6 k 680 to 1.6 k 680 to 1.6 k Maximum diameter: 0.017 in (0.43 mm) A 3 14 3.6 to 7.5 k 1.6 to 3.6 k 1.6 to 3.6 k 1.6 to 3.6 k A 4 16.9 7.5 to 15 k 3.6 to 6.8 k 3.6 to 6.8 k 3.6 to 6.8 k Maximum length: 0.034 in (0.86 mm) A 5 19.8 15 to 51 k 6.8 to 27 k 6.8 to 27 k 6.8 to 27 k A 6 22.1 BR23 A 7 22.7 51 to 150 k 27 to 75 k 27 to 75 k 27 to 75 k Nominal diameter: 0.023 in (0.58 mm) B 8 29.4 150 to 270 k 75 to 130 k 75 to 130 k 75 to 130 k Maximum diameter: 0.025 in (0.63 mm) B 9 30.8 270 to 470 k 130 to 240 k 130 to 240 k 130 to 240 k Maximum length: 0.056 in (1.46 mm) B 10 32.3 470 to 750 k 240 to 360 k 240 to 360 k 240 to 360 k B 11 35.7 750 to 1.6 M 360 to 820 k 360 to 820 k 360 to 820 k Lead-Wires B 12 38.1 1.6 to 2.7 M 820 to 1.3 M 820 to 1.3 M 820 to 1.3 M B 13 45 2.7 to 6.8 M 1.3 to 3.36 M 1.3 to 3.36 M 1.3 to 3.36 M BR11 B 14 48.1 6.8 to 10 M 3.3 to 6.86 M 3.3 to 6.86 M 3.3 to 6.86 M Nominal diameter: 0.0007 in (0.02 mm) B 15 56.5 6.8 to 10 M 6.8 to 10 M 6.8 to 10 M Maximum lead length: 0.312 in (7.9 mm) D 16 75.6 D 17 81 Lead material: platinum alloy Available cuts: K adjacent or P opposite BR14 Nominal diameter: 0.0011 in (0.03 mm) Thermal Time Constant Maximum lead length: 0.312 in (7.9 mm) BR11 Lead material: platinum alloy Still air at 77F (25C): 0.8 second Available cuts: K adjacent or P opposite Plunge into water: 12 msec BR16 BR14 Nominal diameter: 0.0011 in (0.03 mm) Still air at 77F (25C): 1 second Maximum lead length: 0.312 in (7.9 mm) Plunge into water: 14 msec Lead material: platinum alloy BR16 Available cuts: K adjacent or P opposite Still air at 77F (25C): 1.2 second BR23 Plunge into water: 16 msec Nominal diameter: 0.002 in (0.05 mm) BR23 Maximum lead length: 0.312 in (8 mm) Still air at 77F (25C): 1.7 second Lead material: platinum alloy Plunge into water: 40 msec Available cuts: K adjacent or P opposite 2