1. نظرة عامة على المنتج: What Is an Automotive Communication 2+N+2 HDI Board?
الAutomotive Communication 2+N+2 HDI Board هو أ اتصال عالي الكثافة (مؤشر التنمية البشرية) لوحة الدوائر المطبوعة engineered specifically for vehicle communication systems. This product adopts a14-طبقة stack-up structure withS1000-2M high-performance copper-clad laminate as the core substrate material. It achieves high-density, high-reliability interlayer interconnection through an advanced process combining2 laser drilling cycles و3 lamination cycles.
Within the اتش دي اي ثنائي الفينيل متعدد الكلور classification system, 2+ن+2 denotes a specific build-up structure—adding 2 build-up layers on each side of the core substrate (N layer) using the sequential build-up (SBU) طريقة. Compared to 1+N+1 (first-order HDI), 2+N+2 represents asecond-order HDI حل, offering higher wiring density and more sophisticated interconnection capabilities.
UGPCB, as a professional الشركة المصنعة لثنائي الفينيل متعدد الكلور, delivers high-quality اتش دي اي ثنائي الفينيل متعدد الكلور products that comply with the IPC-6012FA automotive applications addendum—the industry’s most stringent reliability standard for automotive electronics.
2. تصنيف المنتج: Scientific Positioning and Technology Tier
This product can be scientifically classified across multiple dimensions:
By IPC-6012 Performance Class: Class 3/A—the highest reliability tier for automotive electronics. IPC-6012F tightens through-hole resistance change after thermal cycling from 10% إلى أmaximum of 5% for Class 3/A, and increases minimum barrel copper thickness from 25 ميكرومتر إلى28 ميكرومتر.
By HDI Order: Second-Order HDI (2+ن+2)—a mid-complexity HDI solution positioned between first-order HDI (common in consumer electronics) and high-end any-layer HDI.
By Material Loss Tier: Mid-Loss (ص < 0.010).
حسب مجال التطبيق: Automotive Electronics—in-vehicle communication, مساعد مساعدة السائق المساعد, V2X, إلخ.
حسب تصنيف القابلية للاشتعال: أول 94 V-0—the highest vertical burn rating, requiring self-extinguishment within 10 seconds with no flaming drips.
3. Core Parameters and Technical Specifications
| المعلمة | مواصفة | المعيار المرجعي |
|---|---|---|
| صفح | S1000-2M (تكنولوجيا شنغي) | IPC-4101/126 |
| عدد الطبقة | 14 طبقات | — |
| سمك المجلس | 1.6 ± 0.16 مم | IPC-6012F |
| Minimum Laser Via Diameter | 0.10 مم | — |
| Minimum Mechanical Hole Diameter | 0.20 مم | — |
| الحد الأدنى لعرض التتبع / تباعد | 75 ميكرومتر / 75 ميكرومتر | IPC-2221C |
| نسبة العرض إلى الارتفاع | 8:1 | IPC-2221 |
| درجة حرارة انتقال الزجاج (تيراغرام) | 180درجة مئوية (DSC) | IPC-TM-650 2.4.25 |
| درجة حرارة التحلل الحراري (TD) | 355درجة مئوية | Shengyi S1000-2M Datasheet |
| ثابت العزل الكهربائي (Dk @ 1GHz) | 4.6 | Shengyi S1000-2M Datasheet |
| عامل التبديد (Df @ 1GHz) | 0.013 | Shengyi S1000-2M Datasheet |
| تصنيف القابلية للاشتعال | أول 94 V-0 | أول 94 معيار |
| عملية خاصة | 2 حفر الليزر, 3 Laminations | — |
Aspect Ratio Calculation is a critical process parameter in تصنيع ثنائي الفينيل متعدد الكلور that directly determines plating quality and through-hole reliability. وفقًا لإرشادات IPC-2221, Aspect Ratio = Board Thickness ÷ Drilled Hole Diameter. For this product: 1.6 mm ÷ 0.2 مم = 8:1. IPC-2221 recommends a maximum aspect ratio of 8:1 ل 10:1 for conventional electrolytic plating processes. ال 8:1 design ensures reliability while fully validating UGPCB’s process capability in high-aspect-ratio through-hole plating.
4. Material Deep Dive: S1000-2M High-Performance Substrate
S1000-2M is a high-performance FR-4.0 copper-clad laminate manufactured by Shengyi Technology. إنه أlead-free compatible high-Tg material.
معلمات الأداء الرئيسية (مصدر: Shengyi Technology official datasheet and IPC-TM-650 test methods):
| المعلمة | قيمة | طريقة الاختبار |
|---|---|---|
| تيراغرام (درجة حرارة انتقال الزجاج) | 180درجة مئوية (DSC) | IPC-TM-650 2.4.25 |
| TD (درجة حرارة التحلل الحراري) | 355درجة مئوية | Shengyi Datasheet |
| T260 | > 60 دقائق | IPC-TM-650 |
| T288 | 30 دقائق | IPC-TM-650 |
| CTE (المحور Z, أدناه تيراغرام) | 41 جزء في المليون/درجة مئوية | IPC-TM-650 |
| CTE (المحور Z, فوق تيراغرام) | 208 جزء في المليون/درجة مئوية | IPC-TM-650 |
| قوة التقشير (after 288°C solder float) | 1.3 ن / مم | IPC-TM-650 |
Core Advantages of S1000-2M:
- Mid-Loss Characteristics: With a Df of 0.013 @ 1 جيجا هرتز, this material offers approximately28% lower dielectric loss compared to standard FR-4 (Df ≈ 0.018).
- مقاومة حرارية عالية: Tg of 180°C and Td of 355°C meet the stringent requirement of continuous operation above 125°C in automotive environments.
- المقهى (خيوط انوديك موصلة) مقاومة: Suitable for high-multilayer PCBs and high-humidity environments.
- أول 94 V-0 تصنيف القابلية للاشتعال: Self-extinguishes within 10 seconds with no flaming drips.
5. أساسيات التصميم: 2+N+2 HDI Architecture Explained
5.1 What Is the 2+N+2 Structure?
The 2+N+2 HDI board is manufactured using the sequential build-up method:
- N Layer: The core substrate layer (multilayer core formed by inner-layer lamination)
- 2 Build-up Layers on Each Side: Constructed sequentially through 2 laser drilling cycles and 2 lamination cycles on both sides of the core
2 Laser Drilling Cycles respectively form the microvias for the first build-up layer (L1-L2, L13-L14) and the second build-up layer (L2-L3, L12-L13).
3 Lamination Cycles يشمل: core layer lamination → first build-up layer lamination → second build-up layer lamination.
5.2 ميكروفيا تكنولوجيا
- Laser Blind Vias: 0.10 mm diameter, formed using CO₂ or UV laser drilling
- Mechanical Buried Vias: 0.20 mm diameter, used for interlayer interconnection within the core
- Stacked/Staggered Via Design: Supports stacked or staggered microvia structures for maximum layout flexibility
5.3 دوائر الخطوط الدقيقة
Minimum trace width and spacing of 75 ميكرومتر (تقريبًا 3 ميل) comply with IPC-2221C requirements for fine-line design. This precision supports fan-out routing for 0.5 mm pitch BGAs.
5.4 السيطرة على المعاوقة
With a Dk of 4.6 @ 1 جيجا هرتز, S1000-2M enables characteristic impedance control at 50Ω, 90أوه, and 100Ω through adjustment of trace width and dielectric thickness—meeting the signal integrity requirements of in-vehicle communication systems.
6. مبدأ العمل: How Does an HDI Board Achieve High-Density Interconnection?
Traditional multilayer PCBs rely onمن خلال الثقوب that penetrate the entire board thickness for layer-to-layer connections—consuming significant routing area.اتش دي اي ثنائي الفينيل متعدد الكلور technology overcomes this limitation through several innovations:
1. Blind Via Technology: Laser-drilled microvias connect only the outer layer to the adjacent inner layer (على سبيل المثال, L1-L2) without penetrating the entire board.
2. Buried Via Technology: Mechanically drilled vias are completely contained within the core layer (على سبيل المثال, L3-L12) and do not appear on the board surface.
3. Sequential Build-Up Method: Build-up layers are constructed sequentially, with each additional layer providing additional routing resources.
4. Stacked Via Interconnection: Blind vias on upper and lower layers can be stacked in alignment to create signal paths spanning multiple layers.
In a 14-layer 2+N+2 structure, a signal can travel from the surface layer (L1) through a 0.10 mm laser blind via to L2, then through a second-layer laser blind via to L3, then through a mechanical buried via within the core to L12, and finally through symmetrical build-up blind vias to the bottom layer (L14)—achievingsignal transmission across 14 layers without consuming surface-layer routing area.
7. خصائص الأداء: Why Is This Board Ideal for Automotive Communication?
7.1 IPC-6012FA Automotive Standard Compliance
في ديسمبر 2025, IPC (now the Global Electronics Association) officially releasedIPC-6012FA, الAutomotive Applications Addendum to IPC-6012F Qualification and Performance Specification for Rigid Printed Boards. This addendum applies to rigid printed boards that must survive the vibration and thermal cycling environments of electronic interconnects within the automotive industry.
IPC-6012F (released October 2023) represents the most significant tightening of automotive PCB reliability requirements in over a decade. Key changes include:
- Through-Hole Resistance Change: Tightened from 10% إلى أmaximum of 5% for Class 3/A
- Barrel Copper Thickness: Increased from 25 ميكرومتر إلى28 ميكرومتر for Class 3/A
- IST (Interconnect Stress Testing): Changed from optional tomandatory, مع الحد الأدنى من500 دورات for Class 3/A
- Stacked Microvias: Requiringseparate qualification at the stacked via level
7.2 Thermal Cycling Reliability
Automotive electronics face continuous operating temperaturesabove 125°C in engine compartments and EV battery-adjacent environments. With Tg of 180°C, Td of 355°C, T260 > 60 دقائق, and T288 of 30 دقائق, S1000-2M ensures dimensional stability and dielectric performance under extreme thermal conditions.
7.3 سلامة الإشارة
In-vehicle communication systems (V2X, مساعد مساعدة السائق المساعد, Automotive Ethernet) continue to push operating frequencies higher. With a Df of 0.013 @ 1 جيجا هرتز, S1000-2M is a mid-loss material that supports10G–25G SerDes channels with excellent performance over link lengths up to 20 بوصة.
7.4 Vibration Resistance
IPC-6012FA specifically addresses automotive vibration environments. The 14-layer HDI board’s multilayer laminated structure provides excellent mechanical strength. مزيج من 0.10 mm laser microvias and 0.20 mm mechanical holes ensures connection reliability under vibration.
8. عملية التصنيع: من المواد الخام إلى المنتج النهائي
خطوة 1: Inner-Layer Core Fabrication
- Core material cutting → inner-layer circuit imaging → etching → AOI inspection
خطوة 2: First Lamination
- Stack multiple inner-layer cores with prepreg → high-temperature high-pressure lamination → core substrate (N layer) تشكيل
خطوة 3: First Laser Drilling & تصفيح
- First laser drilling on both sides of the core (forming L1-L2, L13-L14 microvias) → desmear → electroless copper deposition → electrolytic copper filling
خطوة 4: First Build-Up Lamination
- Laminate first build-up layer material on both sides of the core →Second Lamination
خطوة 5: Second Laser Drilling & تصفيح
- Second laser drilling (forming L2-L3, L12-L13 microvias) → desmear → electroless copper deposition → electrolytic copper filling
خطوة 6: Second Build-Up Lamination
- Laminate second build-up layer material on both sides of the core →Third Lamination
خطوة 7: الحفر الميكانيكي
- Drill 0.20 mm mechanical through-holes and buried vias (within L3-L12 core)
خطوة 8: Outer-Layer Circuit Fabrication
- Outer-layer circuit imaging → etching → solder mask → surface finish (يوافق, إلخ.)
خطوة 9: التفتيش النهائي
- Electrical testing → مسبار الطيران testing → final AOI → reliability sampling (IST, ركوب الدراجات الحرارية, إلخ.)
9. سيناريوهات التطبيق: Core Interconnection Solutions for In-Vehicle Communication Systems
1. أنظمة مساعدة السائق المتقدمة (مساعد مساعدة السائق المساعد)
ADAS requires multi-sensor fusion (رادار الموجة المليمترية, ليدار, الكاميرات). The 2+N+2 HDI board supports microstrip antenna integration and RF impedance control in radar modules with its high-density interconnection capability.
2. V2X (Vehicle-to-Everything) تواصل
V2X modules demand integration of communication RF front-ends, baseband processing, and power management within compact spaces—making HDI PCB’s high-density characteristics an ideal choice.
3. Automotive Ethernet
10G/25G automotive Ethernet switches require stringent signal integrity control. S1000-2M’s mid-loss characteristics ensure low-loss transmission for high-speed signals.
4. Zonal Controllers
Next-generation vehicle architecture zonal controllers process massive data volumes. The 14-layer 2+N+2 HDI board provides ample routing layers and flexible interconnection structures.
5. أنظمة إدارة البطارية (BMS)
EV battery management system PCBs must maintain long-term reliability in high-temperature, high-vibration environments—exactly the scenario addressed by S1000-2M material and IPC-6012FA standards.
10. لماذا تختار UGPCB?
- IPC-6012FA Compliance: Strict adherence to the latest automotive PCB standard released December 2025
- Advanced HDI Manufacturing Capability: Supporting 2+N+2, 3+N+3, and any-layer HDI structures
- مواد معتمدة: S1000-2M certified to UL 94 V-0, compliant with IPC-4101/126 specifications
- مراقبة الجودة من البداية إلى النهاية: Full-process inspection from raw materials to finished products, ensuring Class 3/A reliability
- الاستجابة السريعة: Professional engineering team providing DFM (تصميم للتصنيع) مراجعات
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UGPCB specializes in the R&D and manufacturing ofautomotive electronics HDI PCBs. سواء كنت بحاجة2+N+2 HDI boards, 14-layer high-multilayer PCBs, or otherautomotive communication PCB الحلول, we provide one-stop services from design optimization to volume production.
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إعلان مصدر البيانات
البيانات الفنية والمعلومات القياسية المذكورة في هذه الوثيقة مستمدة من المصادر الرسمية التالية:
- IPC (Global Electronics Association) - IPC-6012Fمواصفات التأهيل والأداء للألواح المطبوعة الصلبة (أكتوبر 2023), IPC-6012FAAutomotive Applications Addendum (December 2025), IPC-2221Cالمعيار العام لتصميم اللوحة المطبوعة (أغسطس 2025), IPC-4101Eمواصفات المواد الأساسية للوحات المطبوعة الصلبة ومتعددة الطبقات, IPC-TM-650دليل طرق الاختبار
- تكنولوجيا شنغي — S1000-2M Product Datasheet and Technical Data Sheet
- أول (مختبرات الضامنين) - أول 94 V-0 Flammability Rating Standard
ملحوظة: All data is cited from publicly available official standard documents or manufacturer specifications to the greatest extent possible. Specific values may vary slightly due to test conditions and batch differences. Readers are advised to refer to the latest official documentation for the most current specifications.
