# Shengyi S1141 FR4 PCB Laminate | PCB Manufacturer _Published: 2026-04-16_ Table of Contents Toggle - What Is Shengyi S1141 PCB Material? - Shengyi S1141 FR4 Datasheet - Why Choose Shengyi S1141 Over Standard FR-4? - What Applications Use Shengyi S1141 PCB Material? - How Does Shengyi S1141 Compare to Rogers Materials? - Get a Quote for Shengyi S1141 PCB Today - FAQs **[Shengyi S1141 PCB material](https://www.bestpcbs.com/blog/2026/04/shengyi-s1141-fr4-pcb-laminate-pcb-manufacturer/)** is widely used in cost-sensitive electronics manufacturing due to its stable performance and reliable processing characteristics. As a standard FR-4 laminate, it offers balanced thermal, electrical, and mechanical properties, making it suitable for a wide range of PCB applications. ## What Is Shengyi S1141 PCB Material? Shengyi S1141 is a **[mid-Tg FR-4 epoxy glass laminate](https://www.bestpcbs.com/products/FR4-pcb.htm)**, designed for general-purpose [PCB fabrication](https://www.bestpcbs.com/products/FR4-pcb.htm). It belongs to the Shengyi standard FR4 material series and is commonly used in multilayer PCB production. Key characteristics include: - Tg around 140°C - Good mechanical stability - Compatible with standard SMT processes - Cost-effective compared to high-Tg materials Unlike high-end laminates, S1141 focuses on **manufacturing efficiency and affordability**, which is why it remains popular in high-volume production. [https://www.bestpcbs.com/blog/wp-content/uploads/2026/04/shengyi-S1141-fr4-pcb-laminate.png](https://www.bestpcbs.com/blog/wp-content/uploads/2026/04/shengyi-S1141-fr4-pcb-laminate.png) ## Shengyi S1141 FR4 Datasheet Below is a detailed datasheet-style specification table for [Shengyi S1141 material](https://www.bestpcbs.com/blog/2026/04/shengyi-s1141-fr4-pcb-laminate-pcb-manufacturer/). These values are typical and may vary slightly depending on resin content and laminate thickness. **Electrical Properties** **Parameter** **Typical Value** **Test Condition** Dielectric Constant (Dk) 4.3 ± 0.1 @1MHz Dielectric Constant (Dk) 4.1 – 4.2 @1GHz Dissipation Factor (Df) 0.018 @1MHz Dissipation Factor (Df) 0.015 – 0.017 @1GHz Volume Resistivity ≥ 1×10⁶ MΩ·cm C-96/35/90 Surface Resistivity ≥ 1×10⁵ MΩ C-96/35/90 Dielectric Breakdown Voltage ≥ 40 kV ASTM D149 **Thermal Properties** **Parameter** **Typical Value** **Test Method** Glass Transition Temperature (Tg) ~170°C DSC Thermal Decomposition (Td) >300°C TGA (5%) T260 ≥ 60 min IPC-TM-650 T288 ≥ 20 min IPC-TM-650 Z-axis CTE (Below Tg) ~50 ppm/°C TMA Z-axis CTE (Above Tg) ~260 ppm/°C TMA **Mechanical Properties** **Parameter** **Typical Value** **Test Method** Flexural Strength ≥ 450 MPa IPC-TM-650 Peel Strength (1 oz Cu) ≥ 1.0 N/mm IPC-TM-650 Density ~1.85 g/cm³ ASTM D792 **Physical & Reliability Properties** **Parameter** **Typical Value** **Condition** Moisture Absorption ≤ 0.15% D-24/23 Flammability Rating UL94 V-0 UL Standard CAF Resistance High IPC standard Thermal Conductivity ~0.3 W/m·K Typical When designing [impedance-controlled PCBs](https://www.bestpcbs.com/products/impedance-control-pcb.html) using S1141, it is recommended to: - Use field solver tools for stack-up calculation - Consider frequency-dependent Dk/Df variation - Validate with impedance coupons during fabrication ## Why Choose Shengyi S1141 Over Standard FR-4? Compared with conventional FR-4 materials, S1141 provides noticeable improvements in electrical stability and signal transmission quality. **Feature** **Standard FR-4** **Shengyi S1141** Signal Loss Higher Lower Impedance Stability Moderate More stable High-Speed Support Limited Suitable for GHz-level Thermal Reliability Standard Enhanced Cost Low Moderate When signal frequency exceeds ~1GHz or edge rates become fast, standard FR-4 begins to show higher insertion loss. S1141 mitigates this issue without moving to expensive RF materials. ## What Applications Use Shengyi S1141 PCB Material? Shengyi S1141 is widely adopted in applications where **signal integrity, reliability, and cost balance** are required. **Typical Applications** - Networking equipment (routers, switches) - Industrial control systems - Automotive electronics (ADAS, control modules) - Power supply and inverter boards - Communication infrastructure - Consumer electronics with high-speed interfaces ## How Does Shengyi S1141 Compare to Rogers Materials? S1141 is often considered a **cost-effective alternative** to high-frequency laminates like Rogers. **Parameter** **S1141** **Rogers (e.g., RO4350B)** Cost Medium High Df Moderate Very Low RF Performance Good Excellent Processing FR-4 compatible Special handling Application Digital + mid RF High-frequency RF **Conclusion:** - Choose S1141 for high-speed digital and cost-sensitive designs - Choose Rogers for pure RF and microwave applications ## Get a Quote for Shengyi S1141 PCB Today If your project requires **stable signal performance, controlled impedance, and cost efficiency**, Shengyi S1141 is a strong candidate. At **[EBest Circuit (Best Technology)](https://www.bestpcbs.com/)**, we provide: - Free DFM analysis - Material selection guidance - Fast prototyping and mass production 📩 Contact us: **[sales@bestpcbs.com](mailto:sales@bestpcbs.com)** **[sales@bestpcb.vn](https://www.bestpcb.vn/)** ## FAQs **1. What is the dielectric constant of Shengyi S1141?** The dielectric constant typically ranges from **4.1 to 4.3 at 1GHz**, offering stable impedance control for high-speed designs. **2. Is S1141 better than standard FR-4?** Yes, it provides **lower loss and better signal integrity**, making it more suitable for high-speed applications. **3. Can S1141 replace Rogers materials?** Partially. It can replace Rogers in **mid-frequency applications**, but not in high-frequency RF designs above several GHz. **4. Is Shengyi S1141 suitable for automotive electronics?** Yes, due to its **thermal stability and reliability**, it is widely used in automotive control systems. **5. What layer count is suitable for S1141?** It is commonly used in **4-layer to 16-layer PCBs**, and can support higher layer counts depending on design.