TECHNICAL DATA SHEET 245 Flux-Cored Wire No-Clean Cored Wire for Lead-bearing and Lead-free Alloys Product Description Kester 245 Flux-Cored Wire is designed to complement low residue liquid fluxes being used by the electronics industry. The chemistry is based on some of the same principles that have been safely used for years in mildly activated rosin fluxes. The use of 245 results in visually acceptable assemblies without cleaning, yet soldering quality and efficiency is comparable to that obtained with mildly activated rosin flux. 245 was formerly classified as Type LR per MIL-F- 14256. Performance Characteristics: Highly reliable post-soldering residue Minimal residue Compatible with leaded and lead-free alloys Classified as ROL0 per J-STD-004 RoHS Compliance This product meets the requirements of the Restriction of Hazardous Substances (RoHS) Directive, 2011/65/EU for the stated banned substances. (Applies only if this core flux is combined with a lead-free alloy) Reliability Properties Copper Mirror Corrosion: Low Tested to J-STD-004, IPC-TM-650, Method 2.3.32 Corrosion Test: Low Tested to J-STD-004, IPC-TM-650, Method 2.6.15 Fluorides by Spot Test: Pass Tested to J-STD-004, IPC-TM-650, Method 2.3.35.1 Chloride and Bromides: None Detected Tested to J-STD-004, IPC-TM-650, Method 2.3.35 245 Flux-Cored Wire Technical Data Sheet Issue: 17 May 2021 Page 1 of 3 TECHNICAL DATA SHEET Spread Test (typical): Tested to J-STD-004, IPC-TM-650, Method 2.4.46 Area of Spread 2 2 mm (in ) Plastic Rosin Core 194 (0.30) 285 Mildly Activated Rosin 335 (0.52) 245 No-Clean 348 (0.54) Silver Chromate: Pass Tested to J-STD-004, IPC-TM-650, Method 2.3.33 Surface Insulation Resistance (SIR) 40 C/90% RH, IPC (typical): Pass Tested to J-STD-004B, IPC-TM-650, Method 2.6.3.7 Surface Insulation Resistance (SIR) IPC (typical): Pass Tested to J-STD-004, IPC-TM-650, Method 2.6.3.3 Test Conditions: 85 C, 85% RH, 7 days, 100V Blank 245 10 8 Day 1 1.33*10 1.56*10 9 9 Day 4 8.78*10 1.48*10 9 9 Day 7 7.53*10 2.76*10 Availability 245 cored wire is available in a wide variety of alloys, wire diameters, flux percentages and roll sizes in both leaded and lead free alloys. Please refer to