Top 10 Dip Plug-in Welding Suppliers in Canada

Nestled in Canada's capital, Maple Leaf Electronics Assembly has been a cornerstone of the country's electronics manufacturing scene for nearly three decades. What began as a small workshop with a single wave soldering machine has grown into a 25,000 sq. ft. facility that specializes in both dip plug-in welding and mixed SMT-dip assembly—a rare combo that makes them a one-stop shop for clients with complex PCBs.

Their sweet spot? Serving the automotive and industrial sectors. With IATF 16949 certification (the gold standard for automotive quality), they're trusted by major auto parts suppliers for assembling PCBs used in engine control units and dashboard systems. But it's their attention to detail that really shines. Their wave soldering line features automated pre-heating and flux application, ensuring consistent solder joints even for components with varying lead lengths. "We once had a client bring us a PCB design with 12 different through-hole component types, and Maple Leaf's team optimized the soldering process to reduce defects by 40%," recalls a project manager at a local industrial sensor company.

Beyond welding, they offer end-to-end services: component sourcing (they partner with global distributors to avoid supply chain delays), DFM reviews, and functional testing. And with RoHS compliance and ISO 9001 certification, they check all the boxes for clients prioritizing sustainability and quality. For businesses that need a reliable dip welding OEM partner with a personal touch, Maple Leaf delivers.

On the west coast, Northern Circuits has carved a niche as the go-to supplier for medical and industrial electronics manufacturers who can't afford mistakes. Their focus on precision is evident the moment you step into their Vancouver facility: climate-controlled production floors, automated optical inspection (AOI) systems for post-soldering checks, and a team of certified engineers with backgrounds in biomedical engineering and industrial automation.

Medical device manufacturers love them for their ISO 13485 certification, which ensures compliance with strict healthcare regulations. "We build PCBs for diagnostic equipment, and Northern Circuits' traceability system is second to none—every component, every solder joint, is logged and tracked from receipt to shipment," says a QA manager at a Victoria-based medical tech firm. They specialize in low-to-medium volume runs, making them ideal for startups scaling prototypes or established companies needing specialized batches.

Their dip plug-in welding process is a blend of automation and craftsmanship. For high-precision components (like those used in surgical tools), they use selective wave soldering to target specific areas of the PCB, minimizing heat exposure to sensitive parts. And for clients with unique needs, they offer manual dip soldering for intricate assemblies that demand a human touch. It's this flexibility that has made Northern Circuits a staple in BC's tech ecosystem.

When it comes to mass production, Toronto Through-Hole Solutions (TTHS) is in a league of its own. With roots dating back to the late '80s, this family-owned business has weathered industry shifts to become one of Canada's largest dip plug-in welding providers, handling up to 500,000 PCBs annually for clients across North America.

Their claim to fame? A state-of-the-art wave soldering line with dual lanes, capable of processing PCBs up to 24 inches long at speeds of 1.5 meters per minute. This allows them to take on high-volume orders for consumer electronics, appliances, and even aerospace sub-assemblies. "We needed 100,000 PCBs for a home appliance line, and TTHS delivered in 6 weeks—on time and under budget," says a production director at a Toronto-based electronics brand.

But volume doesn't mean sacrificing quality. TTHS is ISO 9001 certified and uses statistical process control (SPC) to monitor solder joint quality in real time. They also offer turnkey services, including component sourcing through their global network of suppliers, which helps clients avoid the hassle of managing multiple vendors. For businesses scaling from prototype to mass production, TTHS is the reliable partner that can grow with you.

For industries where failure is not an option—like aerospace and defense—Montreal Electronics Works (MEW) is the supplier of choice. With AS9100 certification (the strictest standard for aerospace manufacturing) and ITAR registration (to handle defense contracts), they specialize in high-reliability through-hole soldering for mission-critical applications.

Their facility is a fortress of compliance: ESD-protected workstations, humidity-controlled storage for sensitive components, and a dedicated testing lab with environmental chambers to simulate extreme conditions (think -40°C to 85°C). "We build PCBs for satellite communication systems, and MEW's soldering process meets MIL-STD-202G, which requires solder joints to withstand vibration and thermal cycling," notes an engineer at a Montreal-based aerospace firm.

What sets MEW apart is their focus on legacy systems. Many defense and aerospace clients still rely on older PCB designs with through-hole components, and MEW's team has the expertise to source obsolete parts and replicate soldering processes that meet decades-old specifications. It's this combination of modern technology and old-school craftsmanship that makes them irreplaceable in high-stakes industries.

Alberta's energy sector demands electronics that can withstand harsh conditions—extreme temperatures, vibration, and exposure to chemicals—and Calgary Circuit Assembly (CCA) has built its reputation on delivering just that. Specializing in dip plug-in welding for oil and gas equipment, they're trusted by companies building drilling sensors, pipeline monitoring systems, and power distribution units.

Their secret? A focus on ruggedization. After soldering, PCBs undergo conformal coating (a protective layer that guards against moisture and corrosion) and potting for extra durability. "We once had a client in Fort McMurray whose PCBs were failing due to oil exposure—CCA recommended a urethane potting compound, and the boards lasted 3x longer," says a field service manager at an oilfield tech company.

CCA also offers custom testing services, including thermal cycling and mechanical shock testing, to ensure PCBs hold up in the field. With ISO 9001 certification and CSA compliance (critical for electrical safety in Canada), they're a top pick for energy sector clients who need more than just soldering—they need a partner who understands the unique challenges of their industry.

Edmonton Electronics Group (EEG) may be one of the newer players on this list, but they've quickly made a name for themselves by specializing in harsh-environment dip plug-in welding. Located in Alberta's industrial heartland, they serve clients in oil and gas, mining, and forestry—industries where PCBs face dust, moisture, and extreme temperatures on a daily basis.

What makes them stand out? Their ATEX certification, which means they can assemble PCBs for explosive atmospheres (think oil refineries or mining operations). Their wave soldering process uses lead-free solder (RoHS compliant) and automated flux removal to prevent residue buildup that could cause short circuits in dusty environments. "EEG built PCBs for our forestry equipment, which operates in -30°C winters—no failures in two years," says a procurement manager at a Edmonton-based machinery manufacturer.

They also excel at low-volume, high-mix production, making them ideal for clients with diverse product lines. And with a small, agile team, they offer faster turnaround times than larger competitors—often delivering prototypes in under a week. For businesses in rugged industries that need flexibility and expertise, EEG is a hidden gem.

On the Atlantic coast, Halifax Precision Circuits (HPC) has become a lifeline for marine electronics manufacturers. From navigation systems to sonar equipment, the PCBs they assemble must withstand saltwater corrosion, constant vibration, and the unique challenges of life at sea. It's no wonder they're DNV GL certified—a testament to their ability to meet maritime industry standards.

Their dip plug-in welding process is optimized for marine-grade components, with a focus on creating solder joints that resist corrosion. After soldering, all PCBs undergo a rigorous salt spray test to ensure they can handle oceanic conditions. "We supply PCBs to fishing boat manufacturers, and HPC's boards have survived five years in saltwater environments without a single failure," says a product manager at a Halifax-based marine tech firm.

Beyond marine applications, HPC is also a go-to for low-volume prototyping. Their small-batch capabilities and quick turnaround times (as fast as 3 days for simple assemblies) make them popular with startups in Atlantic Canada's growing tech scene. And with ISO 9001 certification, they balance speed with quality—a rare combo in the industry.

Winnipeg Welding Services (WWS) has built its brand on affordability without compromising on quality—a winning formula for agricultural electronics manufacturers in Manitoba and Saskatchewan. From GPS-guided farm equipment to grain moisture sensors, the PCBs they assemble need to be tough, reliable, and cost-effective.

Their secret to keeping costs low? Efficient production processes and a focus on lean manufacturing. They use automated insertion machines to place through-hole components quickly, reducing labor costs, and bulk-order solder and flux to pass savings on to clients. "We needed 5,000 PCBs for a line of irrigation controllers, and WWS quoted us 20% less than competitors—with the same quality," says a founder of a Winnipeg-based agtech startup.

Don't let the low prices fool you, though. WWS is ISO 9001 certified and uses AOI to inspect every solder joint, ensuring defect rates stay below 0.1%. They also offer a "dip plug-in and SMT mixed assembly service," allowing clients to combine through-hole and surface-mount components on a single PCB—ideal for agricultural devices that need both robustness and miniaturization. For budget-conscious clients who refuse to skimp on quality, WWS delivers.

Quebec Through-Hole Tech (QTHT) is all about speed—making them a favorite among consumer electronics brands and startups racing to bring products to market. Located in Quebec's tech hub, they specialize in fast-turnaround dip plug-in welding, with lead times as short as 48 hours for urgent orders.

How do they do it? A streamlined production process, with dedicated teams for prototyping and small-batch runs. Their wave soldering line is set up for quick changeovers, allowing them to switch between PCB designs in under an hour. "We had a product launch delayed by a last-minute PCB design change, and QTHT turned around 500 units in 3 days—saved our launch," says a product manager at a Montreal-based consumer electronics company.

They also offer in-house component sourcing, with a network of local and global distributors to ensure parts are available when needed. And with CE certification, their PCBs are ready for sale in the European market—a big plus for clients expanding internationally. For businesses that need to move fast without sacrificing quality, QTHT is the supplier of choice.

Rounding out our list is Hamilton Assembly Solutions (HAS), a versatile supplier that excels in both automotive and industrial dip plug-in welding. Located in Ontario's manufacturing corridor, they're perfectly positioned to serve the province's auto parts suppliers and heavy machinery manufacturers.

What makes HAS unique is their focus on mixed-technology assembly. Many modern PCBs require both SMT and through-hole components, and HAS has mastered the art of integrating the two. Their production line includes both wave soldering for through-hole parts and pick-and-place machines for SMT components, allowing them to handle complex assemblies in a single pass. "We design PCBs with 70% SMT and 30% through-hole components, and HAS's mixed assembly service eliminates the need for multiple suppliers," says an engineer at a Hamilton-based automotive parts company.

With IATF 16949 certification (automotive quality) and ISO 9001, they're trusted by clients with strict quality requirements. They also offer value-added services like conformal coating and functional testing, making them a one-stop shop for end-to-end PCB assembly. For businesses needing flexibility and expertise in mixed-technology PCBs, HAS delivers.