# S1000H _Published: 2026-04-17_ Table of Contents Toggle - What Is S1000H PCB Material? - S1000H Datasheet Overview - Key Features of S1000H PCB Material - S1000H Dielectric Constant - Applications of S1000H PCB Material - S1000H vs S1000-2M - How to Choose S1000H for Your PCB Design? - FAQs About S1000H S1000H PCB material is widely adopted in mid-to-high reliability electronics where thermal stability, cost control, and consistent electrical performance must be balanced. As part of the Shengyi material family, it is engineered for multilayer PCB fabrication and supports stable processing in volume production. Compared with standard [FR4 materials](https://www.bestpcbs.com/products/FR4-pcb.htm), S1000H offers improved glass transition temperature and better dimensional control, making it suitable for industrial control, power electronics, and communication boards. [https://www.bestpcbs.com/blog/wp-content/uploads/2026/04/e4bd0abcffc946d189482c1311761f15.png](https://www.bestpcbs.com/blog/wp-content/uploads/2026/04/e4bd0abcffc946d189482c1311761f15.png) ## What Is S1000H PCB Material? S1000H is a **[high Tg FR4 epoxy laminate](https://www.bestpcbs.com/blog/2026/04/s1000h/)** developed by Shengyi Technology. It is designed to provide enhanced thermal resistance and mechanical stability while maintaining cost efficiency. From an engineering perspective, S1000H sits between standard Tg135 FR4 and high-end Tg170 materials like S1000-2M. It delivers reliable performance for multilayer PCB structures without significantly increasing fabrication costs. **Core characteristics:** - Tg around 150°C (DSC) - Suitable for lead-free assembly - Compatible with multilayer PCB lamination - Good CAF resistance and moisture stability ## S1000H Datasheet Overview **Category** **Property** **S1000H Typical Value** **Notes / Engineering Meaning** **Thermal** Tg (DSC) ~150°C Standard high Tg FR4 class Tg (TMA) ~170°C Better indicator for Z-axis expansion Td (5% weight loss) ≥300°C Good for lead-free soldering T260 ≥10 min Delamination resistance T288 ≥5 min High-temp endurance CTE (X/Y) 14–16 ppm/°C Matches copper well CTE (Z-axis, Tg) 250–300 ppm/°C Important for thermal cycling **Electrical** Dielectric Constant (1GHz) 4.3 – 4.6 Stable for digital designs Dissipation Factor (1GHz) 0.018 – 0.022 Moderate loss Surface Resistivity ≥10⁹ MΩ Prevents leakage Volume Resistivity ≥10⁸ MΩ·cm Insulation stability Dielectric Breakdown Voltage ≥40 kV/mm High insulation strength **Mechanical** Flexural Strength ≥400 MPa Board rigidity Peel Strength ≥1.0 N/mm Copper adhesion Modulus (Young’s) ~20 GPa Structural stability **Moisture & Reliability** Water Absorption ≤0.15% Low moisture sensitivity CAF Resistance Good Suitable for dense multilayer Thermal Conductivity ~0.3 W/m·K Standard FR4 level **Process Capability** Lead-Free Compatibility Yes Reflow safe Max Layer Count 20–32 layers typical Depends on stack-up Lamination Cycles Multiple Suitable for HDI ## Key Features of S1000H PCB Material As a premium **s1000h pcb material**, it boasts a suite of features that make it ideal for demanding electronic environments: - Lead-Free Compatibility: Fully compatible with lead-free soldering processes, meeting global environmental standards and ensuring compliance with modern manufacturing requirements. - Excellent Thermal Reliability: With a glass transition temperature (s1000h tg150 as the minimum specification, typical Tg values reach 155-160℃ via DSC and DMA testing), S1000H maintains rigidity and performance in high-temperature environments. Its decomposition temperature (Td) of 348℃ and T288 time (time to delamination at 288℃) of 20 minutes ensure durability during soldering and long-term operation. - Superior Electrical Properties: Low dielectric constant (Dk = 4.6 at 1GHz) and low dissipation factor (Df = 0.011 at 1GHz) minimize signal loss, making it suitable for high-frequency applications. It also features high volume resistivity (1.5×10⁸ MΩ·cm) and surface resistivity (3.5×10⁷ MΩ) for reliable electrical insulation. - Low Water Absorption & Anti-CAF Performance: With a water absorption rate of only 0.09%, S1000H performs reliably in humid environments. Its excellent anti-CAF (Conductive Anodic Filament) resistance prevents electrical shorts caused by moisture-induced metal migration, enhancing long-term reliability in multilayer PCBs. - Mechanical Strength & Stability: Boasting a flexural strength of 530 MPa (longitudinal) and 440 MPa (transverse), S1000H ensures structural integrity even in complex multilayer designs. Its lower Z-axis CTE (37 ppm/℃ before Tg, 230 ppm/℃ after Tg) reduces thermal expansion issues, improving via reliability. - Flame Retardant: Meets UL94 V-0 flammability rating, ensuring safety in various applications including industrial and consumer electronics. ## S1000H Dielectric Constant The **[S1000H dielectric constant (Dk)](https://www.bestpcbs.com/blog/2026/04/s1000h/)** typically ranges from: - 4.3 to 4.6 @ 1 GHz This value is important for impedance-controlled designs. **What it means in real PCB design:** - Suitable for low-to-mid frequency digital circuits - Acceptable for general signal routing - Not ideal for high-frequency RF (>3 GHz) applications Compared with high-frequency materials (like Rogers), S1000H has higher loss, but for most industrial and power designs, it performs reliably. ## Applications of S1000H PCB Material - Computer and notebook motherboards - Consumer electronics (smartphones, tablets, wearables) - Automotive electronics (non-safety critical components) - Industrial instruments and control systems - Power supplies and industrial equipment - Multilayer PCBs (up to 12 layers) - Instruments and measuring devices ## S1000H vs S1000-2M **Category** **S1000H** **S1000-2M** **Material Grade** Mid-Tg FR4 High-Tg FR4 **Tg (DSC)** ~150°C ~170°C **Td** ≥300°C ≥320°C **T260** ≥10 min ≥30 min **T288** ≥5 min ≥15 min **CTE (Z-axis)** 50–60 ppm/°C 45–55 ppm/°C **Dk (1GHz)** 4.3 – 4.6 4.2 – 4.5 **Df (1GHz)** 0.018 – 0.022 0.015 – 0.020 **CAF Resistance** Good Excellent **Moisture Resistance** Moderate Improved **Thermal Cycling** Standard industrial level High reliability level **Lead-Free Margin** Sufficient Wide margin **Cost Level** Lower Higher **Processing Window** Wide Slightly narrower but stable **Recommended Layers** ≤20–24 layers typical 20–32+ layers ## How to Choose S1000H for Your PCB Design? Selecting S1000H depends on your design requirements. **Choose S1000H if:** - Operating temperature is moderate (