Lead-Free

Solder dross and tin slag are the line items nobody forecasts - yet on a busy THT line they consume solder metal, machine uptime and engineer attention every shift. This guide from Southern Machinery explains what solder dross is, where it costs EMS and OEM plants money, and which solder pot and wave soldering machine parameters actually control it. It covers stand-by wave modes that reduce dross generation, nitrogen capability, pot material and capacity, temperature control precision, alloy change-over, and the consumable cost discipline that pays for itself. Includes published specifications for the S-SW450, S-WS450, S-WS250, S-WS350B and Mini Waver, plus a buyer selection checklist and FAQs.

A lead-free solder pot is decided by four things: pot opening, pot depth, melting capacity and rated power — and by whether the pot body is titanium. This guide covers Southern Machinery's JF series titanium mini solder pots, eight published models from 500 W to 1800 W with a 30-600 °C range, a 45 mm deep pot and a tin slag collector. It explains what each published parameter tells you, the six checks to run before ordering, typical tinning applications, where the pot sits in a THT and Wave Soldering line, and exactly what the catalog does not publish.

S-500G automatic dip soldering machine by Southern Machinery: 350 x 300 mm boards, an 80 kg pot, PID control to 450 C and a 16 s dip cycle.

The S100B desktop selective soldering machine from Southern Machinery enables fast, fixture-free changeover for high-mix THT PCB assembly. Learn how it cuts changeover time and improves HMLV production.

How to choose between dip soldering, Wave Soldering, and selective soldering for THT PCB assembly — a practical process guide for EMS and ODM buyers.

S-WS450 wave soldering setup for lead-free THT: flux spray, 4-zone preheat, conveyor speed and angle, titanium pot temperature, plus a buyer's checklist.

Automatic dip soldering for THT PCBA: the S-DS300 from Southern Machinery batch-solders long-lead components with PLC control and a lead-free tin furnace.

Discover the WITH-10 10-zone reflow oven from Southern Machinery — built for high-volume LED and SMT production lines with precise thermal profiling and energy-efficient operation.

The SO-300 offline selective soldering machine from Southern Machinery delivers ±0.1 mm accuracy and a 300×300 mm soldering area, with PC-based recipe control for high-mix THT soldering and PCB rework.

Southern Machinery's S-WS350 is a 350 mm-class lead-free wave soldering machine: dual wave, 1800 mm hot-air preheat, PC + PLC control for repeatable THT joints.

Single-head selective wave soldering for mixed SMT/THT boards: protect SMD joints, cut flux waste, replace hand soldering with repeatable automated THT joints.

Automate lead-free THT wave soldering with the S-WS450 from Southern Machinery: 450 mm PCB width, 4-zone preheat, dual wave, titanium pot.

The S7020T terminal, riveting & wire p from Southern Machinery delivers precision insertion for high-mix PCB assembly lines. Built for electronics manufacturers seeking throughput without sacrific

SME800 auto stencil cleaner reduces operator dependency in HMLV EMS factories. Automated cleaning cycle, lead-free compatible, fits adjacent to SMT lines.

Southern Machinery's S-WS450 Wave Soldering Machine handles PCBs up to 450 mm wide with 4-zone PID preheating, a full titanium solder pot, and PC+PLC control. Built for high-volume THT production in power supply, LED lig

The S-WS450 Wave Soldering Machine from Southern Machinery delivers consistent, high-quality through-hole solder joints for power electronics, automotive, and industrial PCBs. It supports lead-free alloys, has easy contr