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Shop Kester high-reliability solder flux, solder paste, re-work flux and flux-cored wire.

Kester High-Reliability Products

Kester is a leading global supplier of assembly materials to the electronic assembly, component and microelectronic marketplaces. Its premium products include an array of basic and high-tech attachment materials, including traditional soldering chemicals, paste, wire and bar products.

275 Flux-Cored Wire
NP505-HR Solder Paste
NF372-TB Soldering Flux
SELECT-10 Selective Soldering Flux
RF550 Rework Flux

Soldering made easy with high-reliability products for demanding applications. Recently, manufacturers in the Electronic Assembly industry have expressed concern over no-clean flux residue and its influence on reliability. This concern has been heightened by miniaturization simultaneous with high-density board design trends.

To ensure high reliability, Kester has followed specific experimental procedures based on simple chemical fundamentals. These protocols discriminate two primary chemical mechanisms causing reliability failures: corrosion and electrochemical migration. Including industry standards and customer-specific testing, Kester is proud to present our series of chemically reliable products.

275 Flux-Cored Wire

Part No.	Description	Category
426-280	No Clean, Leaded, Sn63Pb37, 2.2%, 0.025 in (0.60 mm), 275 Series	Solder wire
488SO2751	No Clean, Leaded, Sn63Pb37, 2.2%, 0.031 in (0.80 mm), 275 Series	Solder wire
488SO7604	No Clean, Leaded, Sn63Pb37, 1.1%, 0.015 in (0.40 mm), 275 Series	Solder wire
SN6327550-062	No Clean, Lead Free,Sn63Pb37, 1.1%, 0.062 in (1.50 mm), 275 Series	Solder wire
488SO2753	No Clean, Leaded, Sn63Pb37, 1.1%, 0.020 in (0.50 mm), 275 Series	Solder wire
Sac305 Products
10020328	No Clean, Lead Free, Sn96.5Ag03Cu.5, 1.1%, 0.025 in (0.60 mm), 275 Series	Solder wire
488SO7871	No Clean, Lead Free, Sn96.5Ag03Cu.5, 2.2%, 0.031 in (0.80 mm), 275 Series	Solder wire
488SO7863	No Clean, Lead Free, Sn96.5Ag03Cu.5, 2.2%, 0.020 in (0.50 mm), 275 Series	Solder wire
488WA037	No Clean, Lead Free, Sn96.5Ag03Cu.5, 2.2%, 0.040 in (1.00 mm), 275 Series	Solder wire
488SO7866	No Clean, Lead Free, Sn96.5Ag03Cu.5, 2.2%, 0.050 in (1.27 mm), 275 Series	Solder wire
488SO7867	No Clean, Lead Free, Sn96.5Ag03Cu.5, 2.2%, 0.062 in (1.50 mm), 275 Series	Solder wire
488SO6808	No Clean, Lead Free, Sn96.5Ag03Cu.5, 2.2%, 0.015 in (0.40 mm), 275 Series	Solder wire
488SO7609	No Clean, Lead Free, Sn96.5Ag03Cu.5, 3.3%, 0.015 in (0.40 mm), 275 Series	Solder wire
435-530	No Clean, Lead Free, Sn96.5Ag03Cu.5, 3.3%, 0.020 in (0.50 mm), 275 Series	Solder wire
441-830	No Clean, Lead Free, Sn96.5Ag03Cu.5, 3.3%, 0.062 1 LB Spool, 275 Series	Solder wire
488SO617	No Clean, Lead Free, Sn96.5Ag03Cu.5, 2.2%, 0.025 in (0.60 mm), 275 Series	Solder wire
488WA012	No Clean, Lead Free, Sn96.5Ag03Cu.5, 3.3%, 0.031 in (0.80 mm), 275 Series	Solder wire
488WA020	No Clean, Lead Free, Sn96.5Ag03Cu.5, 3.3%, 0.025 in (0.60 mm), 275 Series	Solder wire
488SO7623	No Clean, Lead Free, Sn96.5Ag03Cu.5, 2.2%, 0.010 in (0.25 mm), 275 Series	Solder wire
K1000ld Products
488SO1315	No Clean, Lead Free, K100LD, 3.3%, 0.015 in (0.40 mm), 275 Series	Solder wire
488SO1320	No Clean, Lead Free, K100LD, 3.3%, 0.020 in (0.50 mm), 275 Series	Solder wire
488SO1350	No Clean, Lead Free, K100LD, 3.3%, 0.050 in (1.27 mm), 275 Series	Solder wire
488SO1362	No Clean, Lead Free, K100LD, 3.3%, 0.062 in (1.50 mm), 275 Series	Solder wire
488SO1331	No Clean, Lead Free, K100LD, 3.3%, 0.031 in (0.80 mm), 275 Series	Solder wire
488SO1325	No Clean, Lead Free, K100LD, 3.3%, 0.025 in (0.60 mm), 275 Series	Solder wire
488SO1310	No Clean, Lead Free, K100LD, 3.3%, 0.010 in (0.25 mm), 275 Series	Solder wire

NP505-HR Solder Paste

Part No.	Description	Category
490-295	Lead-Free No-Clean Solder Paste, SAC305, Type 3, 600 Gram Cartridge	Solder Paste
490-431	Zero-Halogen, No Clean, Lead-Free, Sn96.5Ag3.0Cu0.5 T3 88.5% 500g Jar	Solder Paste
488SO5055	No Clean, Lead Free, Sn96.5Ag3.0Cu0.5, 88.5 %, T4, 50 g Jar	Solder Paste
488SO5056	No Clean, Lead Free, Sn96.5Ag3.0Cu0.5, 88.5 %, T4, 60 g Cartridge	Solder Paste

NF372-TB Soldering Flux

Part No.	Description	Category
488CH0372	NF372-TB 1 Gallon Halide Free Soldering Flux	Solder Flux
488CH372	Flux Pen, Zero Halogen, No Clean	Solder Flux
488CH0373	Xero Halogen, Low Solids, No Clean, Liquid, 5 Gal	Solder Flux
488CH0374	Xero Halogen, Low Solids, No Clean, Liquid, 53 Gal	Solder Flux
10061048	No Clean, Lead Free, Sn63Pb37 T4 89.3% 600g CRT	Solder Flux

SELECT-10 Selective Soldering Flux

Part No.	Description	Category
488SO811	SELECT-10™ Selective Solder Flux, 1 gal.	Flux
484-718	SELECT-10™ Selective Solder Flux, 5 gal.	Flux
489-933	FLUX-PEN® Selective Solder No-Clean	Flux Pen

RF550 Rework Flux

Part No.	Description	Category
488SO550	RF550 Rework No Clean Flux, 30g Syringe	Flux

Have Questions? Call us at 800.225.5370