SEMI F57 Compliance for Ultra-High-Purity (UHP) PFA Tubing: What Semiconductor Engineers Need to Know 

What Is SEMI F57? 

SEMI F57 is an industry standard that establishes purity requirements for polymer materials used in semiconductor ultrapure water (UPW) and chemical delivery systems. The standard evaluates contamination-related characteristics, including extractable metals, total organic carbon (TOC), particle contribution, and material cleanliness, to help ensure polymer components do not compromise wafer manufacturing processes. 
 
For semiconductor manufacturers, SEMI F57 compliance helps reduce contamination risk while supporting consistent process performance and higher wafer yields. 

At a Glance 

• Extractable metals: Reduces ionic contamination 

• Total Organic Carbon (TOC): Minimizes organic contamination 

• Particle contribution: Helps prevent wafer defects 

• Surface cleanliness: Supports high-purity chemical delivery 

• Lot traceability: Simplifies qualification and validation 

• UHP PFA: Preferred fluoropolymer for critical wet-process applications 

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Why Semiconductor Manufacturers Specify SEMI F57 

Modern semiconductor fabrication operates with contamination tolerances measured in parts per billion, and increasingly, parts per trillion. Every component that contacts process chemicals has the potential to introduce contaminants that can reduce yield or affect device reliability. 
 
Manufacturers commonly specify SEMI F57-compliant materials because they help reduce metallic ion contamination, minimize organic extractables, lower particle generation, improve process repeatability, support equipment qualification, and protect wafer yield. 

What Does SEMI F57 Evaluate? 

• Extractable Metallic Ions: Limits trace metal contamination. 

• Total Organic Carbon (TOC): Minimizes organic contamination. 

• Particle Contribution: Helps prevent wafer defects. 

Material Cleanliness: Evaluates manufacturing, cleaning, packaging, and handling practices.SEMI F57 Product Value Checklist 

SEMI F57 Focus Area	Why It Matters	How Altaflo® 480 Supports the Requirement
Extractable metals	Helps reduce ionic and metallic contamination risk.	UHP PFA resin, controlled manufacturing, low extractables, documentation, and lot traceability.
Total Organic Carbon (TOC)	Helps minimize organic contamination that can affect process consistency.	Engineered for ultra-high-purity wetted fluid paths where low extractables are critical.
Particle contribution	Helps reduce defect risk in wafer processing.	Smooth internal surfaces and controlled handling help reduce areas where particles can become trapped.
Cleanliness and traceability	Supports qualification, validation, audits, and root-cause review.	Lot traceability, quality documentation, and controlled production processes support semiconductor requirements.

 

Why Ultra-High-Purity Perfluoroalkoxy (UHP PFA ) Is the Industry Standard 

Ultra-high-purity perfluoroalkoxy (UHP PFA) combines exceptional chemical resistance with extremely low contamination potential. Benefits include low extractables, excellent chemical resistance, smooth internal surfaces, high temperature capability, long service life, and suitability for transporting acids, solvents, ultrapure water, and specialty semiconductor chemicals. 

Does PFA Tubing Meet SEMI F57? 

Not all PFA tubing is manufactured to semiconductor-grade standards. Meeting the intent of SEMI F57 depends on virgin high-purity resin, controlled extrusion, contamination prevention, cleanroom handling, thorough cleaning procedures, lot traceability, and quality documentation. 

When Should Engineers Specify UHP PFA Instead of HP PFA or Standard PFA? 

Engineers specify UHP PFA when the application requires the highest level of purity, extremely low extractables, strong chemical resistance, smooth internal surfaces, and traceability for contamination-sensitive semiconductor fluid handling. Standard PFA may be appropriate for many high-performance chemical transfer applications, while HP PFA can support demanding high-purity systems that do not require the most stringent UHP qualification level. 

How Pexco Altaflo® 480 Supports Semiconductor Purity 

• Ultra-high-purity virgin resin 
• Controlled manufacturing processes 
• Low extractables 
• Broad chemical compatibility 
• Documentation and lot traceability 
• Excellent flex endurance 

Product Snapshot: Altaflo® 480 UHP PFA Tubing & Pipe 

Pexco Altaflo® 480 UHP PFA tubing and pipe is engineered for ultra-high-purity chemical delivery applications where contamination control, chemical resistance, documentation, and dimensional consistency are critical. It is manufactured from 100% virgin-grade high-performance PFA resin and is available as tubing and Schedule 40 pipe for semiconductor, chemical process, laboratory, pharmaceutical, and other high-purity fluid handling applications. Beyond high temperature capability and chemical resistance, Altaflo® 480 also delivers excellent flex endurance, supporting reliable long-term performance in fluid handling systems where repeated flexing or movement is a factor. 

For chemical exposure questions, compatibility should be reviewed against the specific chemistry, concentration, temperature, pressure, and application conditions with Pexco application engineering.  

SEMI F57 vs. SEMI F104 

SEMI F57 focuses on material purity, extractables, TOC, and contamination characteristics, while SEMI F104 focuses on particle performance of polymer components in fluid systems.

How SEMI F57, SEMI F104, and SEMI C90 Work Together 

SEMI F57 focuses on extractable contamination from polymer materials used in ultrapure water and chemical delivery systems. SEMI F104 addresses particle contribution from polymer components in fluid handling, while SEMI C90 relates to cleanliness expectations for polymer components. Together, these standards help engineers evaluate contamination risk, cleanliness, and particle performance in high-purity semiconductor fluid paths. 

Frequently Asked Questions 

What is SEMI F57? 

SEMI F57 is a semiconductor industry standard that evaluates the purity of polymer materials used in ultrapure water and liquid chemical distribution systems. 

Why is SEMI F57 important? 

It helps reduce contamination that can affect wafer yield, process consistency, and device reliability. 

Is SEMI F57 only for tubing? 

No. It applies to many wetted polymer components, including tubing, fittings, valves, and pumps. 

Why is UHP PFA commonly used? 

Because it combines excellent chemical resistance with extremely low extractables and high purity. 

Does Altaflo® 480 meet SEMI F57 requirements? 

Altaflo® 480 UHP PFA tubing is engineered to meet or exceed key SEMI F57 requirements for contamination-sensitive semiconductor fluid handling applications. It supports low extractables, controlled manufacturing, quality documentation, and lot traceability for high-purity chemical delivery systems. [SME sign-off needed, Mary Hyde: confirm specific SEMI F57 data points (e.g., extractable metals results) this claim can cite before external publication.] 

What is the difference between SEMI F57 and SEMI F104? 

SEMI F57 evaluates material purity and extractable contamination from polymer materials, while SEMI F104 focuses on particle contribution from polymer components used in fluid systems. 

When should semiconductor engineers choose UHP PFA tubing? 

Semiconductor engineers typically choose UHP PFA tubing when the fluid path requires extremely low extractables, broad chemical resistance, high purity, smooth internal surfaces, and traceable documentation for wet-process chemical delivery. 

What related Pexco products support high-purity fluid handling? 

Pexco offers Altaflo® 480 UHP PFA tubing and pipe, Altaflo® 451 HP PFA, Altaflo® 400 PFA, dual containment tubing, PVDF tubing and pipe, FEP tubing, PTFE tubing, and custom fluoropolymer solutions for different fluid handling requirements. 

Why Traceability Matters 

Complete lot traceability enables manufacturers to track raw materials, verify manufacturing records, support equipment qualification, simplify audits, and investigate process deviations. 

Related Pexco Solutions for High-Purity Fluid Handling 

While Altaflo® 480 UHP PFA is the focus for the most contamination-sensitive semiconductor chemical delivery applications, Pexco also offers related fluoropolymer tubing and pipe solutions for different performance requirements, including Altaflo® 451 HP PFA, Altaflo® 400 PFA, Altaflo® 480 Dual Containment Tubing, Altaflo® 500 PVDF Tubing & Pipe, FEP tubing, PTFE tubing, and custom fluoropolymer solutions. These materials can support applications where flexibility, optical clarity, mechanical strength, chemical resistance, temperature capability, or dual containment are key design considerations. 

Why Engineers Choose Pexco 

Pexco’s Altaflo® 480 UHP PFA tubing is engineered to support semiconductor manufacturers with ultra-high-purity materials, controlled manufacturing processes, low extractables, chemical resistance, excellent flex life, lot traceability, and technical engineering support.  

Summary 

SEMI F57 is the semiconductor industry’s benchmark for evaluating the purity of polymer materials used in chemical delivery systems. By addressing extractable metals, TOC, particle contribution, cleanliness, and traceability, the standard helps manufacturers reduce contamination risks that can impact wafer yield and process reliability. For applications requiring ultra-high-purity fluid handling, Pexco’s Altaflo® 480 UHP PFA tubing is engineered to support the cleanliness, consistency, and documentation semiconductor manufacturers expect. 

Louis Lau is the Market Development Manager for Semiconductor and partners with customers to develop innovative semiconductor solutions, translating complex application needs into practical, high-performance outcomes. 

Kim Imes is the Senior Content Development at Pexco, where she creates customer-centric content that clearly communicates technical value and helps customers make informed decisions with confidence. 

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