Parylene F / AF-4 Dimer – Fluorinated Polymer for Extreme Environments & Low Dielectric Constant

Overview

Parylene F / AF-4 dimer is a fluorinated Parylene precursor engineered for very low dielectric constant (low-k), high temperature tolerance and excellent chemical resistance. SCH Services Ltd supplies high-purity, batch-traceable AF-4 suitable for all major commercial Parylene deposition systems.

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Why Choose Parylene F / AF-4 Dimer?

  • Low dielectric constant for RF, high-speed digital and sensitive analog designs.
  • High temperature capability with strong thermal stability vs N/C grades.
  • Excellent chemical resistance due to fluorinated backbone.
  • Optically clean films with uniform, pinhole-free coverage.

Typical Applications for AF-4

  • Semiconductor and advanced packaging (low-k needs)
  • Optoelectronic modules and sensors
  • Medical implants and critical medical electronics
  • Harsh-environment aerospace and defence electronics

Quality, Traceability & Packaging

  • High-purity grade suitable for commercial AF-4 deposition
  • Batch-coded, vacuum-sealed containers for shelf life and integrity
  • Standard packs: 10 g, 50 g, 100 g, 1 kg (custom sizes available)
  • Certificate of Conformity and handling guidance supplied

Handling & Storage (Summary)

Store sealed in original containers, away from heat and moisture. Open only in controlled environments in line with your SOPs. Follow the supplied safety and handling guidance.

Technical Background & Standards

Read What is Parylene (F) AF-4 Dimer and where is it used? and visit the Parylene Coating Hub for selection and process guides.

External references: General background on Parylene chemistry.

Request Parylene F / AF-4 Dimer Pricing or Technical Data

Tell us your pack size and delivery location. We’ll confirm availability and lead time.

📞 +44 (0)1226 249019

✉ sales@schservices.com

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FAQs

Is AF-4 compatible with my deposition system?

Yes — SCH-supplied AF-4 dimer is suitable for all mainstream commercial Parylene systems. Share your make/model if you’d like us to verify.

What pack sizes are available?

Standard packs include 50 g, 100 g and 1 kg. Custom sizes and private-label supply available on request.

Why choose AF-4 over Parylene C or D?

Choose AF-4 where low dielectric constant, high temperature performance and chemical resistance are critical (e.g., semiconductor, optoelectronic and implantable applications).

Why Choose SCH Services?

Partnering with SCH Services means more than just outsourcing — you gain a complete, integrated platform for
Conformal Coating, Parylene & ProShieldESD Solutions, alongside equipment, materials, and training, all backed by decades of hands-on expertise.

  • ✈️ 25+ Years of Expertise – Specialists in coating technologies trusted by aerospace, medical, defence, automotive, and electronics industries worldwide.
  • 🛠️ End-to-End Support – Guidance on coating selection, Parylene grades, masking strategies, application methods, inspection, and ProShieldESD integration.
  • 📈 Scalable Solutions – From small prototype batches to full-scale, high-volume production, SCH delivers flexible capacity that grows with your needs.
  • 🌍 Global Reach – Responsive technical support and supply coverage across Europe, North America, and Asia.
  • ✅ Proven Reliability – A strong reputation built on quality, consistency, and customer satisfaction across services, equipment, and materials.

📞 Call: +44 (0)1226 249019
✉ Email: sales@schservices.com
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