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When processing PCBA or looking for PCBA outsourcing manufacturers, customers often ask: “How can I tell if this PCBA board uses lead-free technology?” Today, let’s discuss several practical methods for judgment, which even non-electronic engineers can quickly discern.
1. Observe the color and luster of the solder joints
The most intuitive method is to look at the solder joints.
– Leaded solder joints: Bright silver-white color, smooth and shiny surface.
– Lead-free solder joints: Duller color, often grayish-white, with a more pronounced rough texture.
(Reference standard: IPC-A-610 “Acceptability of Electronic Assemblies” provides clear descriptions of solder joint appearance)
Therefore, if you see that the solder joints on the PCBA board are particularly shiny, it is likely a leaded process; while lead-free solder joints are more “low-key”.
2. Check for environmental labels on the PCB or packaging
Reputable PCBA manufacturers usually mark the following on the circuit board or label when using lead-free technology:
– RoHS: Complies with the EU Directive on the Restriction of Hazardous Substances in Electrical and Electronic Equipment (RoHS Directive 2011/65/EU);
– Pb-free* or a green leaf logo;
– Halogen-free and other environmental labels.
If these labels can be found on the board or packaging, it can be confirmed that it is lead-free technology.
3. Use detection methods
If visual judgment is difficult, some detection methods can be employed:
– XRF spectroscopy: Can quickly detect the composition of PCBA solder joints to see if they contain lead (Pb);
– Third-party laboratory test reports: For example, RoHS reports issued by SGS or CTI can confirm 100% whether it is lead-free.
These methods are suitable for industries with particularly strict environmental requirements, such as medical electronics and automotive electronics.
4. Confirm the process with the PCBA processing manufacturer
The most reliable way is to directly ask your PCBA outsourcing factory for documentation. Reputable factories will provide leaded or lead-free production processes based on customer requirements and can issue relevant RoHS compliance declarations or test reports.
5. Why choose lead-free PCBA technology?
Lead-free technology not only complies with environmental regulations but also has several practical benefits:
– Complies with international market access requirements such as EU RoHS and REACH;
– Safer for human health and the environment, avoiding lead contamination;
– In high-reliability electronic products, it can enhance product brand image and export competitiveness.
To quickly determine whether a PCBA board uses lead-free technology, mainly observe the appearance of solder joints, identification symbols, and test results. If you are unsure, just consult a reliable PCBA processing manufacturer.
Intelli’s Production Line Scale
(1) 24 high-end SMT lines from ASM (2) 8 Panasonic automatic insertion machines (3) 4 lead-free wave soldering lines, expandable to 8 lines (4) 8 assembly lines, expandable to 16 lines, 4 packaging lines, expandable to 8 lines (5) Actual placement capacity of about 3 million points per hour, with a monthly capacity of up to 1.7 billion points (6) All equipment can connect to the MES system (7) Each SMT line is equipped with SPI/AOI inspection equipment (8) Each SMT line is equipped with SPI/AOI post-NG buffer for fully automated production (9) 1+1, 2+1, 3+1, dual-track production line layout can meet different product production needs, optimizing reasonably (10) Reflow soldering with 13 temperature zones, nitrogen filling available
At the same time, we have passed external audits for system certifications: ISO9001, ISO14001, IATF16949, ISO13485, ISO45001, ANSI/ESD S20.20
Jiangxi Intelli only does mid-to-high-end PCBA processing, providing you with the best EMS manufacturing services.
Business inquiries: Mr. Li 17870016160
Company phone: 0794-7878288 Company fax: 0794-7878288 Email: [email protected]
Company website: www.intelli40.com Address: Building 8-9, Linchuan High-tech Industrial Park, Fuzhou City, Jiangxi Province
Intelli Electronics WeChat Official Account
WeChat ID: intelli40
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