KOA SPEER ELECTRONICS, INC. SS-252 R3 AHA 8/16/12 Positive Tempco Thermistor Type PT72 CERTIFIED CERTIFIED 1. 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 2. Dimensions Table 1 L Type W Solder Plating t d Protective Coating Inner Electrode Ni Plating Dimensions - inches (mm) L W t d .079±.008 2A (0805) (2.0±0.2) .049±.008 (1.25±0.2) .039±.008 (1.0±0.2) .016±.008 (0.4±0.2) .126±.008 2B (1206) (3.2±0.2) .063±.008 (1.6±0.2) .039±.008 (1.0±0.2) .020±.012 (0.5±0.3) Resistive Body 3. Type Designation Type designation shall be as the following form. PT72 2A T 70°C TE 471 Type Size Code Termination Material Curie Temperature Packaging Nominal Resistance 2A: 0805 2B: 1206 T: Sn (Other termination styles available, contact factory for options) 70°C 80°C 100°C TE: 7" Embossed Plastic (3,000 pieces/reel) 2 Significant figures + 1 multiplier PAGE 1 OF 4 Bolivar Drive ■ P.O. Box 547 ■ Bradford, PA 16701 ■ USA ■ 814-362-5536 ■ Fax 814-362-8883 ■ www.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. KOA SPEER ELECTRONICS, INC. SS-252 R3 4. Typical Circuit Schematic: Heating Protection for Transistor Circuits +Vcc R1 RL PT72 R2 RE 5. Applications and Ratings Part Designation Curie Temperature Resistance @ 25°C Resistance Tolerance 470Ω 80°C Operating Temperature Range 16V -55°C to +125°C 95°C ± 10°C 115°C ± 10°C 100°C ±50% PT722B Absolute Maximum Working Voltage 85°C ± 10°C 70°C PT722A Temperature @ R25 x 7 70°C 120Ω, 470Ω, 1kΩ 80°C 50Ω, 470Ω, 1kΩ 95°C ± 10°C 100°C 470Ω, 1kΩ 115°C ± 10°C 85°C ± 10°C 6. Environmental Applications 6.1 Temperature Characteristics CT 70°C CT 80°C CT 100°C Resistance (kΩ) 1000 100 10 1 0.1 -20 Bolivar Drive 0 ■ 20 40 60 80 100 Temperature (°C) P.O. Box 547 ■ 120 140 Bradford, PA 16701 160 PAGE 2 OF 4 ■ USA ■ 814-362-5536 ■ Fax 814-362-8883 ■ www.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. KOA SPEER ELECTRONICS, INC. SS-252 R3 6.2 Performance Characteristics Requirement ∆ R Parameter Limit Typical Test Method Resistance to Solder Heat ±20.0% ±4.0% 260°C ± 5°C, 10 seconds ± 1 second Rapid Change of Temperature ±20.0% ±4.0% -55°C (30 minutes), +125°C (30 minutes), 5 cycles Resistance ±50.0% ±35.0% 25°C Humidity Resistance ±20.0% ±4.0% 40°C ± 2°C, 90 - 95% RH, 1000 hours Load Life ±5.0% ±4.0% 25°C ± 2°C, 1000 hours, rated voltage 7. Packaging Specifications 7.1 Dimensions of Plastic Tape J E t A D C B K L F H G Direction of feed Dimensions in inches (mm) Series A B C D E F 2A 0.057 ± 0.004 (1.45 ± 0.1) 0.089 ± 0.004 (2.25 ± 0.1) 0.315 ± 0.008 (8.0 ± 0.2) 0.138 ± 0.002 (3.5 ± 0.05) 0.069 ± 0.004 (1.75 ± 0.1) 0.157 ± 0.004 (4.0 ± 0.1) 2B 0.075 ± 0.004 (1.9 ± 0.1) 0.138 ± 0.004 (3.5 ± 0.1) 0.315 ± 0.008 (8.0 ± 0.2) 0.138 ± 0.002 (3.5 ± 0.05) 0.069 ± 0.004 (1.75 ± 0.1) 0.157 ± 0.004 (4.0 ± 0.1) Series G H J K L t 0.039 ± 0.008 0. (1.0 ± 0.2 ) 0 0.049 ± 0.004 (1.25 ± 0.1) 0.01 ± 0.002 (0.25 ± 0.05) 0.039 ± 0.008 0. (1.0 ± 0.2 0 ) 0.049 ± 0.004 (1.25 ± 0.1) 0.01 ± 0.002 (0.25 ± 0.05) 2A 0.079 ± 0.002 (2.0 ± 0.05) 0.157 ± 0.004 (4.0 ± 0.1) 0.059 ± 0.004 . 0 (1.5 ± 0.1 ) 0 2B 0.079 ± 0.002 (2.0 ± 0.05) 0.157 ± 0.004 (4.0 ± 0.1) 0.059 ± 0.004 0. (1.5 ± 0.1 0 ) PAGE 3 OF 4 Bolivar Drive ■ P.O. Box 547 ■ Bradford, PA 16701 ■ USA ■ 814-362-5536 ■ Fax 814-362-8883 ■ www.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. KOA SPEER ELECTRONICS, INC. SS-252 R3 7. Packaging Specifications (Continued) 7.2 Leader and End Tape 19.69 (500 ±20 ) 0 19.69 (500 ± 20 ) 0 5.91(150 ±20 ) 0 Top tape 3000 pcs. (Chip Mounting Space) (Empty) (Empty) End Tape (Leader Space) Leader Tape Tape running direction 7.3 Reel specifications for taping Marking B A C D Dimensions in inches (mm) Series A B C PT72 7.01 ± 0.079 (178 ± 2) 2.36 ± 0.079 (60 ± 2) D Material 0.512 ± 0.020 0.354 ± 0.059 (13 ± 0.5) (9 ± 1.5) Plastic PAGE 4 OF 4 Bolivar Drive ■ P.O. Box 547 ■ Bradford, PA 16701 ■ USA ■ 814-362-5536 ■ Fax 814-362-8883 ■ www.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.