BC103J1K

Surface Mount Thermistors Leadless Top Bottom Terminated Chip Thermistor BC Series Leadless Top/Bottom Terminated Chip Thermistors Description Littelfuse leadless top/bottom terminated chip thermistor elements are designed for use on hybrid substrates, integrated circuits and printed circuit boards. They have silver metallization on their top and bottom surfaces which are suitable for various contact techniques including epoxy or solder. Other metallization materials are available as well. Since they are manufactured using the most advanced equipment and technology available, their dimensional parameters are extremely uniform, making the devices especially suitable for use with automatic handling and placement equipment. Options • Non-standard resistance values and tolerances • Special lead materials Dimensions • Special encapsulants or probe housings • Tape and reel packaging and lengths Features A • Surface mountable • Small size • Very low profile B SILVER METALLIZATION TOP AND BOTTOM • Low cost • Rapid response time Part Numbering System C THICKNESS BC 10 1 B 1 K Series Dimensions shown in inches. A A See Dim “L” B B See Dim “W” Resistance @ 25ºC C C Base Value See Dim “T” Multiplier, power of 10 See Dim See Dim See Dim “L” “W” “T” Resistance Tolerance K = ± 10% No Significance R-T Curve Ex. 101 = 10 Ω x 101 = 100 Ω Note: Not all combinations of Part Number codes are available. Contact Littelfuse for details. LEADLESS CHIP THERMISTORS “L” “W” SILVER METALLIZATION TOP AND BOTTOM © 2018 Littelfuse, Inc. Revised: February 26, 2018 Specifications are subject to change without notice. “T” (THICKNESS) 1 littelfuse.com Surface Mount Thermistors Leadless Top Bottom Terminated Chip Thermistor BC Series Leadless Top/Bottom Terminated Chip Thermistors Specifications Beta (K) 0-50°C Dissipation Constant, Nominal (mW/°C) Thermal Time Constant, Max. - Still Air (seconds) Temperature Rating (°C) -3.31 2941 1 2 -55 to +150 B -3.31 2941 1 2 -55 to +150 10 F -3.86 3419 1 2 -55 to +150 2252 10 J -4.4 3892 1 2 -55 to +150 BC302J1K 3000 10 J -4.4 3892 1 2 -55 to +150 BC502J1K 5000 10 J -4.4 3892 1 2 -55 to +150 BC103J1K 10000 10 J -4.4 3892 1 2 -55 to +150 BC203J1K 20000 10 J -4.4 3892 1 2 -55 to +150 BC303J1K 30000 10 J -4.4 3892 1 2 -55 to +150 BC503J1K 50000 10 J -4.4 3892 1 2 -55 to +150 BC104R1K 100000 10 R -4.68 4140 1 2 -55 to +150 Part Number Resistance Ohms @25°C *Resistance Tol. ± % @ 25°C BC101B1K 100 BC501B1K R-T Curve Temperature Coefficient (%/°C) @ 25°C 10 B 500 10 BC102F1K 1000 BC222J1K *Resistance tolerances of ± 1%, 2%, and 5% are available upon request Packaging Packaging Option Packaging Code Standard ESD Waffle Pack -WF NA Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics © 2018 Littelfuse, Inc. Revised: February 26, 2018 Specifications are subject to change without notice. 2 littelfuse.com