Water Soluble Flux Pen 837-P Technical Data Sheet 837-Pen Description The 837-P Water Soluble Flux Pen is a neutral, water-removable soldering flux. The organic activating system in 837-P has a neutral H at room temperature and becomes activated at soldering temperature. The 837-P flux is formulated to be effective over a broad preheat range and may be used for both leaded and lead-free applications. It cleans easily with hot or cold water. A chiseled tip provides exact delivery of the flux to the surface. Application & Usages The 837-P pen is designed to dispense flux in a precisely. It is excellent for prototyping and rework/repair of printed circuit boards. It works well on chip carriers, heat sinks, surface mounted device pads, switches and sockets. Features and Benefits Good soldering properties Yields bright, shiny joints Excellent wettability Cleans with water Neutral H RoHS compliant Flux Paste Properties Flux Properties Method Value Flux Classification J-STD-004 ORH1 Flux type Organic Flux Activity High Halides %(wt) 2.2% 0.3% Copper Mirror IPC-TM-650 2.3.32 Complete removal of copper film Corrosion Test IPC-TM-650 2.6.15 Pass (Cleaned) 10 Surface insulation resistance (SIR) IPC-TM-650 2.6.3.3 1.8 10 Physical Properties Method Value Color Colorless pH 7.3 0.5 Solids% IPC-TM-650 2.3.34 17.5% 1% Density ASTM D 4212 0.85 Flash Point Closed cup 12 C 54 F Page 1 of 3 Date: 05 October 2018 / Ver. 1.02 Water Soluble Flux Pen 837-P Technical Data Sheet 837-Pen Storage and Shelf Life Store at around room temperature and protect from direct heat or sunlight. Properties Value Shelf Life after DOM 2 y Storage Temperature 18 to 27 C 65 to 80 F DOM = date of manufacture Health and Safety Please see the 837-P Safety Data Sheet (SDS) for more details on transportation, storage, handling and other security guidelines. Application Instructions Apply flux directly with the pen on the joint to be soldered. Cleaning 2 Use hot or cold water to remove flux residues. A water spray pressure of 20 to 30 lb/in (psi) is recommended. Use deionized water as a final rinse to meet MIL-28809A cleaning requirements. Packaging and Supporting Products Cat. No. Form Net Volume Net Weight 837-P Pen 10 mL 0.33 fl oz 8.4 g 0.27 oz 837LFWS-1L Liquid 1 L 33 fl oz 846 g 1.87 lb Suitable Flux Cleaners Heavy Duty Flux Remover: Cat. No. 413B-1L, 413B-4L, 413B-20L, 413B-425G Flux Remover for PC Boards: Cat. No. 4140-P, 4140-400G, 4140-1L, 4140-4L, 4140-20L Page 2 of 3 Date: 05 October 2018 / Ver. 1.02