1733 Reader's Spreads pg1-203:document 1/27/09 4:16 PM Page 179 SF chip type resettable fuses EU features Quickly breaks extraordinary current Small size SMD type The least rise in resistance after reflow soldering Latched if when extraordinary current continues The least rise in resistance by repeating trips UL143A File No. E250106 c-UL CAN/CAS-C222, No.0 and Technical Information Letter No. CA-3A File No. E250106 approved • Marking: Green body color • Products with lead-free terminations meet EU RoHS and China RoHS requirements circuit protection • • • • • • • dimensions and construction L a Type SF45 (1812) a W Dimensions inches (mm) W h L .177±.008 (4.5±0.2) .126±.008 (3.2±0.2) a .016±.008 (0.4±0.2) .020±.008 (0.5±0.2) h Element Protective Coating Inner Electrode Outer Electrode ordering information New Part # SF 45 N Type Style Characteristic 45: 4.5 x 3.2mm N: Normal 110 T Hold Current 050: 0.50A 075: 0.75A 110: 1.1A Termination Material T: Sn TE Packaging TE: Embossed plastic tape 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. 1/06/09 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 181 1733 Reader's Spreads pg1-203:document 1/27/09 4:16 PM Page 180 PMS 300 neg. Black neg. SF chip type resettable fuses applications and ratings Hold Rating Max. Rated Voltage (DCV) Max. Rated Current (A) Trip Current (A) SF45N050 SF45N075 SF45N110 0.50A 0.75A 1.10A 15.0 13.2 6.0 40 1.00 1.50 2.20 Initial Resistance Resistance R after Tripping Type (Ω) R1 Max. (Ω) Power Dissipation PD (W) Operating Temperature Range 0.6 -40°C to +85°C 0.85 0.41 0.21 0.49 0.24 0.15 environmental applications 110 Percentage of Rated Current 160 075 Time to Trip Characteristics 050 Derating Curve 1000 140 120 100 100 80 40 20 0 -55 -35 -15 5 25 45 65 85 105 125 Ambient Temperature (°C) Time to Trip (Sec.) 10 60 1 .1 .01 R-T Characteristics .001 100k .0001 0.1 10k Resistance (Ω) circuit protection Part Designation 1 10 100 Current (A) 1k 100 10 1 0.1 0 50 100 150 Temperature (°C) Performance Characteristics Parameter Trip Endurance Trip Cycle Life (ON-OFF Test) Requirement Limit Without damage under 24 hours of current sending Without damage after 1000 cycles Test Method Use the device which has been left for 15 minutes or more in 25°C set voltage to be applied to the element at maximum rated voltage. And set current to be applied within the range between trip current and maximum rated current Use the device which has been left for 15 minutes or more in 25°C set voltage and current to be applied to maximum rated voltage and maximum rated current respectively. Apply rated voltage for 5 seconds and 55 seconds off Heat Resistance Without Damage 85°C ± 3°C, 1000 hours Cold Resistance Without Damage -40°C ± 3°C, 1000 hours Humidity Resistance Without Damage 85°C ± 3°C, 85% RH, 1000 hours Heat-Cold Cycling Without Damage -40°C ± 3°C (30 minutes), +85°C ± 3°C (30 minutes), 20 cycles Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 182 2/22/08 — KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com