Top 10 Dip Plug-in Welding Suppliers in Portugal

Founded in 1998, Lisbon Electronics Assembly Co. (LEAC) has grown from a small local workshop to one of Portugal's most trusted names in through-hole soldering. Nestled in the heart of Lisbon's tech district, LEAC prides itself on a legacy of precision—so much so that they've earned the nickname "The Craftsmen of Connections" among clients. What sets LEAC apart? Their reliable dip welding OEM partner model, which prioritizes long-term relationships over one-off transactions.

LEAC's services span the entire dip plug-in welding spectrum: from low-volume prototype runs for startups to high-volume production for automotive suppliers. They specialize in mixed-technology assemblies, seamlessly combining dip soldering with SMT for boards that require the best of both worlds. Certifications? They hold ISO 9001 and RoHS compliance, and their in-house testing lab ensures every (solder joint) meets IPC-A-610 standards. "We treat each board like it's going into a life-saving device," says Maria Almeida, LEAC's Quality Manager. "Because sometimes, it is."

Industries served: Medical devices, automotive electronics, industrial controls. Lead time: 3–5 days for prototypes, 10–15 days for mass production. Bonus: LEAC offers free component sourcing support for clients struggling to secure hard-to-find through-hole parts.

Porto Through-Hole Solutions (PTHS) is proof that specialization breeds excellence. Since 2005, this Porto-based firm has focused solely on dip plug-in welding and through-hole assembly, earning a reputation for zero-defect runs and fast delivery dip plug-in assembly that keeps even the tightest production schedules on track. Their 15,000 sq. ft. facility houses state-of-the-art wave soldering machines and automated insertion equipment, but they still train technicians in manual soldering for those delicate, low-volume jobs that demand a human touch.

PTHS's claim to fame? Their "Rapid Response Team," which guarantees a 48-hour turnaround for emergency orders—a service that has made them the go-to supplier for European industrial firms facing production bottlenecks. "Last year, a client in Germany needed 500 control boards for a factory shutdown in 72 hours," recalls CEO João Silva. "We ran three shifts, skipped weekends, and delivered with 6 hours to spare. That's the PTHS promise."

Certifications: ISO 13485 (medical), IATF 16949 (automotive). Industries: Aerospace, defense, energy. Unique offering: X-ray inspection for hidden solder joints in complex assemblies. Fun fact: PTHS sponsors a local robotics team, teaching students the art of through-hole soldering—"the future of our craft," Silva says.

Coimbra Dip Welding Experts (CDWE) may be the new kid on the block (founded in 2012), but they've quickly made a name for themselves with their innovative approach to through-hole soldering service . Located in Coimbra's Technology Park, CDWE combines traditional dip welding with digital tools: their proprietary software tracks each component from arrival to insertion, reducing errors and streamlining quality control. "We're not just soldering—we're solving problems," says founder Ana Costa, a former electronics engineer who started CDWE after noticing gaps in Portugal's through-hole market.

CDWE's niche is low-to-medium volume runs for niche industries, such as custom audio equipment and marine electronics. They offer dip plug-in assembly with optional conformal coating, protecting from moisture and corrosion in harsh environments. Their "Design for Manufacturability" consulting service is another hit: Costa and her team review client PCB layouts before production, suggesting tweaks that improve solder joint reliability and reduce costs. "A client once saved 15% on a project after we recommended repositioning three components," Costa laughs. "That's the value of engineering, not just assembly."

Certifications: ISO 9001, RoHS. Industries: Marine, audio, IoT devices. Lead time: 5–7 days for standard orders. Perk: Free DFM consultations for new clients.

Braga Electronics Assembly (BEA) is a family-owned business with a global mindset. Started by the Ribeiro family in 1989, BEA began as a small repair shop but has evolved into a full-service dip plug-in welding provider serving clients in 12 countries. What's their secret? A focus on sustainability and ethical manufacturing. BEA's facility runs on 100% renewable energy, and they recycle 95% of their solder waste—a commitment that has made them a favorite among eco-conscious brands.

BEA's services include wave soldering, selective soldering, and manual dip welding for components that can't withstand high temperatures. They're also pioneers in one-stop SMT + dip assembly service , handling everything from PCB fabrication to final testing under one roof. Their automotive clients rave about their IATF 16949 certification and zero ppm defect rate over the past three years. "My grandfather always said, 'If you cut corners on quality, you cut corners on trust,'" says Tiago Ribeiro, BEA's current CEO. "We still live by that."

Industries served: Automotive, consumer electronics, renewable energy. Lead time: 7–10 days for standard orders. Green bonus: Clients receive a "Sustainability Report" with each order, detailing carbon footprint and waste reduction metrics.

Aveiro Precision Soldering (APS) is where science meets soldering. Located near the University of Aveiro's renowned engineering school, APS collaborates with academics to develop new dip welding techniques—including a patent-pending low-temperature solder paste that's ideal for heat-sensitive components like sensors and LEDs. This focus on innovation has made APS the supplier of choice for R&D labs and tech startups across Europe.

APS's specialty is high-precision dip plug-in welding for microelectronics. Their selective soldering machines can target individual with 0.01mm accuracy, making them perfect for dense PCBs with tight component spacing. "We once soldered a 0402 resistor (the size of a grain of sand) onto a medical PCB—by hand," says Dr. Luis Mendes, APS's R&D Director. "It took three hours and a microscope, but the client called it 'a masterpiece.'"

Certifications: ISO 13485 (medical), ISO 9001. Industries: Medical devices, aerospace, sensors. Lead time: 5–12 days (varies by complexity). Unique service: Custom solder alloy development for clients with specialized needs.

Faro Electronics Assembly (FEA) brings a Mediterranean flair to manufacturing: sunny, efficient, and always welcoming. Located in the coastal city of Faro, this supplier has built its reputation on flexibility and customer service—traits that shine through in their dip plug-in assembly offerings. FEA caters to small businesses and startups, offering low minimum order quantities (MOQs) of just 10 units, making them ideal for entrepreneurs testing new products.

FEA's team speaks five languages, which is a boon for international clients. They also offer free shipping to EU countries and a "No Surprises" pricing model—no hidden fees for setup, testing, or revisions. "We remember what it was like to be a startup," says founder Carlos Gomes, who launched FEA in 2010 after bootstrapping his own electronics company. "Cash flow is tight, so we keep costs transparent and MOQs low. It's how we'd want to be treated."

Services: Wave soldering, manual dip welding, basic functional testing. Certifications: RoHS compliant. Industries: Consumer electronics, IoT, educational kits. Lead time: 7–10 days. Perk: A free "Startup Package" with discounted rates for first-time clients.

Guimarães Industrial Welding (GIW) is all about heavy-duty reliability. This supplier, based in the industrial city of Guimarães, specializes in dip plug-in welding for large, rugged PCBs used in machinery, power distribution, and construction equipment. Their wave soldering machines can handle boards up to 24 inches in length, and their technicians are trained to solder oversized components like transformers and capacitors that would overwhelm smaller shops.

GIW's claim to fame is their "Tough Test Protocol," which subjects to vibration, temperature cycling, and mechanical stress tests—ensuring they hold up in the harshest environments. "A client in Norway uses our boards in offshore wind turbines," says Operations Manager Helena Sousa. "Those turbines see salt spray, 100 mph winds, and -20°C winters. If our fail, millions in revenue are at stake. We don't let that happen."

Certifications: ISO 9001, CE marked. Industries: Industrial machinery, energy, construction. Lead time: 10–15 days for large orders. Unique offering: On-site welding services for clients with oversized or delicate equipment that can't be shipped.

Setúbal Solder Solutions (3S) is a hidden gem on Portugal's south coast. Founded in 2008, this supplier has quietly become a leader in through-hole soldering service for the automotive and transportation industries. 3S's facility is just 30 minutes from Lisbon Port, giving them a logistical edge for exporting finished assemblies to Europe and beyond.

3S specializes in high-volume dip plug-in welding, with a production capacity of 50,000 boards per month. They've invested heavily in automation, including robotic insertion machines and AI-powered quality inspection systems that catch defects human eyes might miss. But they balance tech with hands-on care: each board still gets a final visual inspection by a senior technician. "Automation is great, but nothing replaces experience," says CEO Manuel Ferreira. "A veteran technician can feel a bad just by looking at it. That's intuition—AI isn't there yet."

Certifications: IATF 16949, ISO 14001. Industries: Automotive, marine transportation, railway. Lead time: 10–12 days for mass production. Bonus: 3S offers just-in-time (JIT) delivery to minimize clients' inventory costs.

Leiria MicroWelding (LMW) is where precision meets miniaturization. This Leiria-based supplier focuses on dip plug-in welding for small, high-density PCBs used in wearables, hearing aids, and medical implants. Their cleanroom facility and ultra-fine solder paste application tools allow them to solder components as small as 0.4mm in pitch—feats that require steady hands and advanced microscopy.

LMW's reliable dip welding OEM partner approach extends to confidentiality: they work with medical device companies on prototype assemblies, signing NDAs to protect proprietary designs. "A client once sent us a PCB for a new pacemaker," says Lead Technician Rui Dias. "We had to solder a chip smaller than a fingernail, with 48 pins. One mistake, and the prototype is ruined. That's pressure—but we thrive on it."

Certifications: ISO 13485, ISO 14644 Class 8 cleanroom. Industries: Medical implants, wearables, microelectronics. Lead time: 5–8 days for prototypes. Unique service: Microscope-aided inspection reports with photos of every for clients.

Rounding out our list is Viseu Electronics Group (VEG), a diversified supplier that offers dip plug-in welding alongside SMT assembly, PCB fabrication, and final product assembly. This one-stop-shop model has made VEG a favorite among clients looking to simplify their supply chains. "Why coordinate with five suppliers when you can work with one?" asks Sales Director Pedro Lima. "We handle everything from PCB design to box-build assembly—so clients can focus on selling, not sourcing."

VEG's dip welding services are robust: wave soldering, selective soldering, and manual assembly for odd-form components. They also offer dip plug-in assembly with testing service , including functional testing and in-circuit testing (ICT) to catch defects early. Their client roster includes household names in consumer electronics, thanks to their competitive pricing and scalable production (from 100 to 100,000+ units).

Certifications: ISO 9001, ISO 14001, RoHS. Industries: Consumer electronics, appliances, telecommunications. Lead time: 7–14 days (varies by volume). Perk: A dedicated account manager for each client, ensuring smooth communication from quote to delivery.