1733 Reader's Spreads pg1-203:document 1/27/09 4:12 PM Page 154 PT72 positive tempco thermistor EU features 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 circuit protection • • • • 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. 156 2/12/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 1733 Reader's Spreads pg1-203:document 1/27/09 4:12 PM Page 155 PMS 300 neg. Black neg. PT72 positive tempco thermistor typical circuit schematic R2 circuit protection PT72 R1 applications and ratings Part Designation Resistance @ 25°C Curie Temperature Resistance Tolerance Operating Temperature Range 16V -55°C to +125°C 95°C ± 10°C 470Ω 80°C 115°C ± 10°C 100°C PT722B Absolute Maximum Working Voltage 85°C ± 10°C 70°C PT722A Temperature @ R25 x 7 ±50% 85°C ± 10°C 70°C 120Ω, 470Ω, 1kΩ 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 Performance Characteristics Parameter Resistance to Solder Heat Rapid Change of Temperature Resistance Humidity Resistance Load Life Requirement Limit ±20.0% ±20.0% ±50.0% ±20.0% ±20.0% 140 ∆R Typical ±4.0% ±4.0% ±35.0% ±4.0% ±4.0% 160 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. 11/20/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 157