نظرة عامة على المنتج: What Is a 10-Layer 3-Stage HDI PCB?
A 10-layer 3-stage HDI PCB is a high-density interconnect printed circuit board. It uses three sequential lamination cycles and three laser drilling steps. The 3+N+3 stackup has three build-up layers on each side. The middle N section contains four core layers. Total layer count is ten. This structure enables high-density routing and reliable signal transmission.
IPC-2226 defines this 3+N+3 structure as Type III مؤشر التنمية البشرية. ملحوظة: Some older sources call 3+N+3 Type II. That label is incorrect. IPC-2226 defines Type III for 3+N+3.
The electronics industry keeps shrinking devices. تقليدي ثنائي الفينيل متعدد الكلور technology is near its physical limits. HDI technology solves this problem. It packs more routing into less space. نتيجة ل, مركبات ثنائي الفينيل متعدد الكلور HDI power modern high-end electronics.
المواصفات الأساسية
| المعلمة | مواصفة |
|---|---|
| عدد الطبقات / منصة | 10 طبقات / 3-منصة (3+N+3) |
| المادة الأساسية | FR4 Tg170 (إيبك-4101) |
| سمك اللوحة | 1.2 مم |
| حجم اللوحة | 126 × 118 مم / 4-أعلى |
| سمك النحاس الخارجي | 35 ميكرومتر (تقريبا. 1 أوقية) |
| سمك النحاس الداخلي | 18 ميكرومتر (تقريبا. 0.5 أوقية) |
| الحد الأدنى من خلال ثقب | 0.20 مم |
| Minimum blind via | 0.10 مم |
| الحد الأدنى من BGA | 0.25 مم |
| Line width and spacing | 2.8/3.2 ميل (0.071/0.081 مم) |
Industry Standard Classification: HDI Types Under IPC-2226
IPC-2226 defines HDI types by build-up layers per side.
| HDI Type | Stackup | Build-Up Layers Per Side | IPC-2226 Status |
|---|---|---|---|
| النوع الأول | 1+ن+1 | 1 | Standard type |
| النوع الثاني | 2+ن+2 | 2 | Standard type |
| النوع الثالث | 3+N+3 | 3 | Standard type |
| إليك | Any-layer | 3+ | Industry term, not an IPC-2226 type |
This product is IPC-2226 Type III. It uses 3+N+3. وهو يدعم 0.25 mm BGA pitch. It also supports 0.10 mm blind vias.
IPC-T-50M defines a microvia as a blind via with:
- Diameter ≤ 0.15 مم
- Aspect ratio ≤ 1:1
- Depth ≤ 0.25 مم
UGPCB 0.10 mm blind via meets this definition.
Stackup Structure: Engineering Logic of 3+N+3
The 3+N+3 stackup uses three build-up layers on each side. For a 10-layer board, N equals 4. The full stackup is 3+4+3.
- Outer layers: three signal layers on each side.
- Middle layers: four core layers.
- Inner layers: power and ground planes.
This arrangement supports high-speed signals and stable power delivery.
Key design points:
- سلامة الإشارة: يتحكم 50 Ω single-ended impedance. يتحكم 90 أوم و 100 Ω differential impedance.
- Power distribution: Use split power and ground planes. Keep inner copper at 18 μm or higher.
- Microvia design: Follow IPC-2226. Keep microvia aspect ratio at or below 1:1.
- BGA fanout: يدعم 0.25 mm BGA pitch. This pitch suits advanced packages.
كيف يعمل: Microvia Technology for High-Density Interconnect
HDI PCBs use microvias instead of through holes. A microvia connects only the layers that need a connection. This design frees routing space.
UGPCB builds this 10-layer 3-stage HDI PCB in three stages.
- منصة 1: Laser drills form blind vias between L1-L2 and L9-L10.
- منصة 2: Laser drills form blind vias between L2-L3 and L8-L9.
- منصة 3: Laser drills form blind vias between L3-L4 and L7-L8.
Three lamination cycles build all microvia layers. This process creates a true 3D interconnect structure.
Reliability matters. فئة IPC-6012 3 يتطلب الحد الأدنى من 20 μm copper in holes. It also requires an average of 25 ميكرومتر. Plating must reach the bottom of each blind via. Engineers control aspect ratio to prevent voids.
Key Materials and Performance
FR4 Tg170 Base Material
يستخدم هذا المنتج FR4 Tg170 laminate. It meets IPC-4101. Tg means glass transition temperature. Tg170 means the material stays rigid below 170°C.
High-Tg materials offer key benefits:
- Thermal reliability: Z-axis CTE is about 45–55 ppm/°C below Tg. IPC-4101 sets a maximum of 60 ppm/°C for many high-Tg FR4 grades.
- قابلية اللحام: The material withstands lead-free reflow. Peak temperature reaches about 260°C.
- تصنيف اللهب: FR4 meets UL94 V-0. It self-extinguishes within 10 ثواني. It does not produce flaming drips that ignite cotton.
سمك النحاس
- Outer copper: 35 ميكرومتر, عن 1 أوقية. It carries current and spreads heat.
- Inner copper: 18 ميكرومتر, عن 0.5 أوقية. It supports fine-line etching.
Line Width and Spacing
يحقق المجلس 2.8/3.2 mil line width and spacing. That equals 0.071/0.081 مم. This range falls into fine-line تصميم ثنائي الفينيل متعدد الكلور.
IPC-2221B requires 0.10 mm minimum spacing for external uncoated conductors at 0–15 V. هذا المنتج 3.2 mil spacing is close to that limit. It demands tight etching control and high-precision AOI.
عملية التصنيع: From Core to Finished HDI PCB
UGPCB follows a multi-stage sequential lamination process.
منصة 1: التصنيع الأساسي
The process starts with double-sided copper-clad laminate. Mechanical drilling forms through holes down to 0.20 مم. تصفيح, التصوير, and etching form inner-layer circuits.
منصة 2: First Build-Up Lamination and Laser Drilling
The team stacks prepreg and copper foil on both sides. A high-temperature press bonds the layers. A UV laser drills 0.10 mm blind vias. Plating fills the vias and forms L1-L2 interconnects.
منصة 3: Second Build-Up Lamination and Laser Drilling
The team repeats lamination, الحفر بالليزر, والطلاء. This step forms L2-L3 interconnects.
منصة 4: Third Build-Up Lamination and Laser Drilling
The team completes the third build-up. This step forms L3-L4 interconnects. All ten layers now have interconnections.
منصة 5: Outer Patterning and Finishing
The process forms outer circuits with 2.8/3.2 mil line width and spacing. Then comes solder mask, الانتهاء من السطح, and routing. Surface finish options include ENIG, OSP, وخالية من الرصاص HASL. Final checks include AOI, الأشعة السينية, واختبار مسبار الطيران.
Applications of 10-Layer 3-Stage HDI PCB
5G Communication Equipment
5G smartphones need high routing density. The 10-layer 3-stage HDI PCB supports 0.25 mm BGA and mmWave modules. UGPCB’s HDI PCB solutions serve this market.
AI Servers and High-Performance Computing
AI servers use FPGAs and GPUs with high pin counts. A 10-layer 3-stage HDI PCB provides fine lines and small vias. It supports high-speed interconnects.
إلكترونيات السيارات
Advanced driver-assistance systems use radar, ليدار, and domain controllers. These systems need high-frequency HDI boards. The 10-layer 3-stage HDI PCB meets that need.
الالكترونيات الاستهلاكية الراقية
Flagship tablets, الأجهزة القابلة للارتداء, and imaging devices benefit from HDI technology. They gain thinner designs and better performance.
Why Choose UGPCB for Your 10-Layer 3-Stage HDI PCB?
UGPCB offers high-order HDI mass production. We build 1-stage to 3-stage HDI PCBs and beyond.
We follow IPC standards. Our process covers IPC-2226 design rules and IPC-6012 acceptance criteria.
We use high-quality FR4 Tg170 laminate. The material meets IPC-4101 and UL94 V-0.
We deliver fine-line capability. Our lines reach 2.8/3.2 ميل. Our laser vias reach 0.10 مم.
We provide PCB and PCBA turnkey services. You can source bare boards and full PCBA assembly from one partner.
Get a Quote for Your HDI PCB Project
Need a 10-layer 3-stage HDI PCB quote? Need HDI PCB prototyping? Need PCBA turnkey خدمة?
عروض UGPCB:
- Free technical review and stackup advice
- النماذج الأولية السريعة
- Flexible volumes from small batch to mass production
اتصل بـ UGPCB today. Upload your Gerber files and technical requirements. سوف يقوم مهندسونا بالرد في الداخل 24 hours with pricing and technical feedback.
Visit UGPCB’s website to start your HDI PCB order.
Product parameters come from UGPCB’s manufacturing data. Industry process descriptions come from public technical references.
إعلان مصدر البيانات
This article cites the following standards and sources:
- IPC-2226, Design Guidelines for High Density Interconnect Structures. Defines HDI Type I, النوع الثاني, والنوع الثالث. Defines 3+N+3 as Type III.
- IPC-6012, مواصفات التأهيل والأداء للألواح المطبوعة الصلبة. فصل 3 requires 20 μm minimum and 25 μm average copper in holes.
- إيبك-4101, مواصفات المواد الأساسية للوحات المطبوعة الصلبة ومتعددة الطبقات. Covers FR4 Tg170 and Z-axis CTE limits.
- IPC-2221B, المعيار العام لتصميم اللوحة المطبوعة. Lists 0.10 mm minimum spacing for external uncoated conductors at 0–15 V.
- IPC-T-50M, Terms and Definitions for Interconnecting and Packaging Electronic Circuits. Defines microvia as ≤ 0.15 mm diameter, ≥ 1:1 نسبة العرض إلى الارتفاع, and ≤ 0.25 mm depth.
- أول 94, اختبارات قابلية اشتعال المواد البلاستيكية لأجزاء الأجهزة والأجهزة. يو ال 94 ف-0 يتطلب الإطفاء الذاتي في الداخل 10 seconds and no flaming drips that ignite cotton.
- UGPCB product specification sheet for the 10-layer 3-stage HDI PCB.
