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ESD (Electrostatic discharge) is a leading cause of unreliability in semiconductor manufacturing and assembly. It is capable of creating or perpetuating parts defects, corrupting data or degrading components through a momentary burst of static charge undetectable by human skin.ESD Trays may be coated on the surface of the tray material or have ESD surface treatments, yet only permanently anti-static property can ensure reliability protection. Leenol is a total solution provider for anti-static requirements, manufacturing permanently anti-static ESD trays that comply with IEC61340-5-1 and ANSI/ESD-2020 standards.Here below will explain why it is necessary to have a permanently anti-static protection on modern ESD Trays.
Surface Coatings Degrade Over Time
Some low cost ESD Trays may have the application of an ESD coating, spray or surface treatment to provide a surface with a relatively short term reduction of surface resistivity. Such surface coatings were not made to endure. As the tray surfaces are cleaned or parts are set onto the surface, they slowly get worn away, plus humidity/temperature effects can be present and affect the coating over time. The static protection feature of these surfaces diminishes and even cease to exist within a short period of several months.
Upon coating failure, trays will fail to dissipate electrostatic charge and your parts, being set onto them, will become subject to discharge due to handling, movement, or even adjacent equipment. Leenol's permanently anti-static trays do not use such topical ESD surface treatment; instead they have permanent anti-static characteristic embedded into the entire body of the material the tray is made from. As there is no topical ESD surface feature applied, these characteristics will never be eroded by wear and tear from handling, cleaning or through its use over time. Continuous production lines will greatly benefit from this kind of product.
Consistent Surface Resistivity Ensures Process Stability
Each electronic manufacturing company will need their surface resistivity fall into the required range specified by ESD control standards usually anywhere between 10⁷–10¹² ohms depending on how they are used, to prevent a large static charge being released too fast causing damage to the component. Earlier static control top coats may not have produced consistent surface resistivity values across the surface of the trays. They could be a mixture of both highly resistive parts that do not discharge and conductive parts which discharge very rapidly.
Permanently anti-static ESD Trays ensure a consistent surface resistivity across the entire tray surface, throughout production batches and over years of service life. By being in control of the material itself, the electronics manufacturer can guarantee reliable and repeatable ESD controls procedures. When all trays are known to behave identically, process validation becomes predictable and ESD damage may be significantly minimized. Leenol Trays are produced under an ISO 9001 quality management system and are tested to meet the necessary International ESD Standards.
Long-Term Cost Savings Through Durability
Although a short term cost saving opportunity is present when you choose topically coated ESD Trays the total costs over the life of the products may significantly rise over the long term. Coated Trays will eventually require replacement as they wear down and their conductive properties are diminished. Such replacement will account for the cost of the tray itself as well as labor for the removal, installation, and check of replacement Trays, which do not include any potential ESD damage from a lost conductive coating.
Leenol's anti-static Trays offer the long term benefits that ensure permanent, durable anti-static product performance. While the upfront cost of purchasing permanently anti-static Trays is higher, the long-term Total Cost of Ownership (TCO) is actually lower. Eliminating repeated purchases and handling checks will lead to immense savings for high volume assembly operations working with high density components in semiconductor and electronics assemblies that employ thousands of trays per day.
Compliance with Industry Standards and Customer Requirements
Leading electronics manufacturers and automotive suppliers are already requiring their partners along the supply chain to prove full compliance with IEC61340-5-1 or ANSI/ESD-2020. Compliance requires proof that the product satisfies these standards throughout its product life, not just when it is initially delivered. Old anti-static Trays can jeopardize these agreements as they fail to provide their original static dissipating characteristic. A failed audit due to non-compliance can mean loss of business and significant damage to a company's reputation.
Leenol's permanent anti-static Trays have full compliance with IEC61340-5-1 and ANSI/ESD-2020, backed by a SGS and RoHS certification. This will provide manufacturers the needed documentation that assures their compliance and consequently their customers, whether in high volume automobile electronics, medical electronics, aerospace applications etc.
Conclusion
Permanently anti-static feature in ESD Trays will never fade away; the surface resistivity never degrades over time and they always ensure stable ESD control. Permanent ESD trays allow lower total costs of ownership (TCO), plus achieve required standards. Shanghai Leenol is committed to providing permanently anti-static Trays and a full range of other ESD storage, packing and workstation related products, along with cleanroom products and test equipment. We strive to deliver consistent, high quality products, and have quick turnaround times on custom ESD trays and standard sizes alike. Call Shanghai Leenol today to discuss your specific requirements for permanently anti-static Trays to protect your sensitive components.
