PT72 ptc chip thermistor (for over-temperature protection) EU features thermal protection • Reduced size, light weight and small mounting area • Quick thermal response • Curie temperature: 70°C, 80°C, 100°C • Marking: Black coating for 70°C Curie temperature Brown coating for 80°C Curie temperature Blue coating for 100°C Curie temperature • Products with lead-free terminations meet EU RoHS and China RoHS requirements dimensions and construction L Type L 2A (0805) .079±.008 (2.0±0.2) .049±.008 (1.25±0.2) 2B (1206) .126±.008 (3.2±0.2) .063±.008 (1.6±0.2) W Solder Plating t d Protective Coating Inner Electrode Dimensions inches (mm) W t (Inch Size Code) .039±.008 (1.0±0.2) d .016±.008 (0.4±0.2) .02±.012 (0.5±0.3) Ni Plating Resistive Body ordering information New Part # PT72 2A Type Size Code 2A: 0805 2B: 1206 T Termination Material T: Sn (Other termination styles available, contact factory for options) 70C Curie Temperature 70°C 80°C 100°C TE Packaging TE: 7" embossed plastic (3,000 pieces/reel) 471 Nominal Resistance 2 significant figures + 1 multiplier For further information on packaging, please refer to Appendix A. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 162 12/02/11 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com PT72 ptc chip thermistor (for over-temperature protection) typical circuit schematic R1 thermal protection +Vcc RL PT72 R2 RE applications and ratings Part Designation Curie Temperature Resistance @ 25°C Resistance Tolerance 70°C PT722A Absolute Maximum Working Voltage Operating Temperature Range 16V -55°C to +125°C 85°C ± 10°C 80°C 470Ω 95°C ± 10°C 100°C PT722B Temperature @ R25 x 7 115°C ± 10°C ±50% 70°C 120Ω, 470Ω, 1kΩ 85°C ± 10°C 80°C 50Ω, 470Ω, 1kΩ 95°C ± 10°C 100°C 470Ω, 1kΩ 115°C ± 10°C environmental applications Temperature Characteristics CT 70°C CT 80°C CT 100°C Resistance (kΩ) 1000 100 10 1 0.1 -20 0 20 40 60 80 100 Temperature (°C) 120 140 160 Performance Characteristics Parameter Resistance to Solder Heat Rapid Change of Temperature Resistance Humidity Resistance Load Life Requirement ∆ R ±% Limit Typical ±20.0% ±4.0% ±20.0% ±4.0% ±50.0% ±35.0% ±20.0% ±4.0% ±20.0% ±4.0% Test Method 260°C ± 5°C, 10 seconds ± 1 second -55°C (30 minutes), +125°C (30 minutes), 5 cycles 25°C 40°C ± 2°C, 90 - 95% RH, 1000 hours 25°C ± 2°C, 1000 hours, rated voltage Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/02/11 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 163