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Two small white jars of rosin solder flux side by side

#7523 Rosin Solder Flux 2 x 40g Jar RMA

SKU CH-G4MP-HGTGA

Two 40 g jars of RMA rosin flux deliver non-corrosive, no-clean performance for PCB, SMD, BGA and CPU repair from 100 °C to 400 °C

  • Fit and compatibility2Pcs, Rosin Solder Flux
  • RMA flux leaves non-corrosive residue that rarely needs cleaning
  • Rosin-based formula meets J-STD-004 ROH0 classification for reliability
  • High-purity rosin is lead-free, chloride-free and non-toxic
  • Works across a wide 100 400 °C soldering temperature range
  • Two 40 g jars supply 1.41 oz each for extended use

Product identity

#7523 Rosin Solder Flux is a rosin mildly activated (RMA) flux supplied as two 40 g jars. It is intended for technicians and hobbyists who need a reliable, non-corrosive flux for electronic soldering and repair work on SMD, BGA, LED, PCB, IC and CPU assemblies.

Build integration

The paste-like consistency lets it stay in place on fine-pitch pads and component leads during hand soldering or hot-air rework. Because residues are non-corrosive and classified ROH0 per J-STD-004 and J-STD-004B, cleaning is optional in most applications, freeing bench time and reducing solvent use.

Sustained load behaviour

The flux remains active across a soldering temperature range of 100 to 400 °C (373 to 673 °F), delivering consistent wettability, high tack force and strong joints throughout extended rework sessions. Its lead-free, chloride-free, non-toxic formulation maintains stable viscosity without breaking down or charring during prolonged heat exposure.

How it compares

Measured against everything we stock in Soldering Irons & Stations, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 83% of the 802 comparable items (median $25.99).

Specifications

Compatibility
Fit and compatibility2Pcs, Rosin Solder Flux

Questions about this item

How long does a 40 g jar last under daily soldering?

Each jar holds 40 g of RMA flux; typical SMD work uses a few grams per session, so one jar covers many days of continuous use.

Does the flux smoke or smell strong when held at 400 °C all day?

The rosin-based #7523 flux is rated to 400 °C and produces only light rosin fume with moderate viscosity, so odour stays low during extended sessions.

What cleaner do I need to remove the residue after soldering?

Residues are non-corrosive ROH0 class and do not require removal in most applications; if cleaning is desired, isopropyl alcohol works.

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