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Offline Selective Wave Soldering Machine with Dual Preheating
This Offline Selective Wave Soldering Machine features top hot air and bottom infrared dual preheating, serving as an upgraded high-end precision soldering device. It is specially developed for multi-layer PCBs, PCBs with high tin penetration requirements and boards assembled with high heat-absorbing components. The dual preheating system delivers uniform and deep board heating, effectively solving common process defects including uneven temperature distribution and insufficient tin penetration caused by multi-layer board heat accumulation and high heat-absorbing components. Equipped with a high-precision fixed solder pot, the machine provides stable and consistent tin wave output. Dwell time, tin wave height and flux dosage support independent single-point adjustment for targeted precision soldering, effectively eliminating cold joints, solder bridging, insufficient tin penetration and missing solder, and significantly improving the soldering yield and quality consistency of high-standard PCBs.
With outstanding process compatibility, this machine is ideal for processing multi-layer PCBs, thick copper boards, high-density boards and PCBs with large heat-absorbing components. The combined top hot air circulation and bottom infrared constant temperature heating realizes gradient balanced heating, fully activates flux, removes board moisture and volatile substances, and compensates heat loss of high heat-absorbing components. It effectively avoids thermal shock, PCB warpage and solder joint cracking, ensuring full tin penetration and ultra-clean solder joints. Adopting offline manual loading and unloading design, it supports fast program switching and flexible small-batch and multi-variety production, providing reliable zero-defect soldering solutions for high-precision electronic manufacturing.
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FPS-250C
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Sundarc
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Product Overview
Our offline one-piece hooded selective wave soldering machine (FPS-250C) is a state-of-the-art soldering solution purpose-built for electronics manufacturing enterprises and precision assembly facilities. This standalone selective wave soldering machine with preheating integrates advanced automation and user-centric design, delivering consistent, high-reliability soldering results for complex printed circuit boards (PCBs) with hybrid components, tight thermal constraints, and high-density layouts.
With a compact 1350L×940W×1540H mm footprint and 280KG weight, it fits seamlessly into small to medium-scale production lines, prototyping workshops, and facilities requiring strict soldering quality control. It supports PCBs up to 330×250 mm, with a 180 mm maximum top component height and 30 mm bottom component height, accommodating diverse PCB configurations for industrial production needs.
Product Advantages
Ultra-precision Soldering & Fluxing Control
Our precision selective soldering system uses an XYZ-axis servo motor-driven structure with linear rails, achieving ±0.1 mm soldering precision for targeted through-hole and SMT component soldering, minimizing solder waste and rework rates. PID+SSR temperature control maintains solder temperature within ±2°C up to 400°C, ensuring stable joint quality for lead-free soldering. The advanced selective spray fluxing system delivers 0.05 mm movement precision, with adjustable 0.2–15 second spray cycles, optimizing flux consumption while ensuring reliable solder adhesion.
Efficient Preheating & Low-oxidation Design
The 3KW bottom-mounted infrared preheating system ensures uniform PCB temperature distribution, reducing thermal shock to heat-sensitive components and improving solder wetting efficiency. The optional nitrogen protection system covers the nozzle and solder pot, cutting solder dross generation from 0.2 Kg/8H to 0.01 Kg/8H, drastically reducing oxidation and enhancing long-term solder joint integrity for high-reliability applications.
Ergonomic Safety & Operational Efficiency
The one-piece hooded enclosure contains fumes and heat, paired with a 5 m³/h exhaust system for a clean work environment. The 900±20 mm ergonomic operating height and intuitive PC control interface simplify operation, cutting staff training time and human error for continuous industrial production.
Product Applications
This offline selective soldering machine serves high-standard electronics manufacturing sectors, including automotive electronics (vehicle sensors, control modules), medical device assembly (diagnostic tools, patient monitors), aerospace & defense electronics (avionics, navigation systems), and industrial & consumer electronics fabrication (robotics, automation equipment, compact wearables).
PCBA Field
Electronic Components
Industrial Control
Aerospace
Home Appliances
Military Electronics
Marine Electronics
Automotive Electronics
Product Operate Guide
PCB Loading & Parameter Setting: Mount the PCB on the fixture, and set/save custom soldering parameters via the PC control interface.
Selective Flux Spraying: The XYZ-axis system drives the PCB to apply flux exclusively to targeted soldering areas with high precision.
Infrared Preheating: The PCB passes through the preheating zone for uniform temperature stabilization, reducing thermal shock during soldering.
Precision Soldering: Targeted soldering is executed with preset parameters, with optional nitrogen protection enabled for high-reliability requirements.
PCB Unloading & Tracking: Unload the finished PCB for inspection, with built-in counting and alarm functions for full production traceability.
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