Solder Connection

Solutions in Soldering Technology

Lead-Free SACX Solid Solder Feed Wire

SACX 0307 Solid Solder Wire is a lead-free alloy suitable for use as a replacement for Sn63 alloy in the wave solder process. As with all Alpha Metals bar solder, Alpha’s proprietary Vaculoy alloying  process is used to remove  certain  impurities, particularly oxides. The product is further enhanced with the addition of 2 minor elements to reduce dross formation and improve the joint cosmetics.

These solid wires are designed to be used in conjunction with automatic  feed systems currently fitted to wave soder machines and the latest  selective soldering systems.

Key Products Features & Benefits: 

  • Yeild - Comparable to SAC305, superior performance for bridging compared to Sn99.3/Cu0.7 based alloys.
  • Wetting Speed - 0.75 seconds typical wetting speed compares to SAC305 at 0.65 sec and superior to Sn99.3/Cu0.7 based alloys at 1.0 sec. 
  • Dross Generation - lowest in class due to the Vaculoy process in conjunction with  the addition of a dross reducing agent.
  • Lowers Total Cost of Ownership due to the lower material cost, high yields and low dross generation.
  • Gives very good solderability due to the fast wetting speed.
  • Gives very good drainage and hence lower levels of bridges due to the formulation containing Silver.
  • Delivers good performance across a range of flux technologies.

Selective Soldering - A Brief Guide


Prod. No. 161486
3.0 mm Diameter Feed Wire on 4 kg reels

Data Sheets and Info

Health & Safety

Technical Bulletin

ROHS Certificate

Related Technical Documents


Q - What is colophony and can it cause any health issues?
A - Colophony is a generic term for rosin, this is the sap or sticky substance that derives from pine and spruce trees. Its "stickiness" lends itself to being used in a wide range of products. We have traditionally used this product in fluxes due to these specific properties it can however lead to breathing difficulties and skin sensitivity. Always use fume filtration when soldering and change filters regularly.

Q - What is the difference between rosins and resins?
A - The terms are often used interchangeably, but rosin is a naturally occurring substance, and resin is either a modified rosin or completely synthetic material. Rosins are plant based products and are subject to more natural variation than resins, however resins are commonly used in newer flux formulations due to their more consistent performance.

Q - How does IPCJ-STD-004B flux classification work.
A - Flux designation has three components. The first two letters, RO, RE or OR, represent the basic chemical composition: rosin-based, resin-based or organic acid-based. The next component is flux designation, L, M or H, which describes the flux’s activity level as low, medium or high, and the final component, 0 or 1, this indicates if halides are present.

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SolderStar WaveSelective Pallet

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EF-6100 - Wave & Selective Soldering Flux

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