1. 제품개요: What Is an Automotive Communication 2+N+2 HDI Board?
그만큼자동차 통신 2+N+2 HDI 보드 는 고밀도 상호 연결 (HDI) 인쇄 회로 기판 engineered specifically for vehicle communication systems. This product adopts a14-층 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 그리고3 lamination cycles.
Within the HDI PCB classification system, 2+n+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) 방법. Compared to 1+N+1 (first-order HDI), 2+N+2 represents a2차 HDI 해결책, offering higher wiring density and more sophisticated interconnection capabilities.
UGPCB, as a professional PCB 제조업체, delivers high-quality HDI PCB products that comply with the IPC-6012FA automotive applications addendum—the industry’s most stringent reliability standard for automotive electronics.
2. 제품 분류: 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% 에게maximum of 5% for Class 3/A, and increases minimum barrel copper thickness from 25 µm to28 μm.
By HDI Order: Second-Order HDI (2+n+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: 중간 손실 (Df < 0.010).
애플리케이션 도메인별: Automotive Electronics—in-vehicle communication, ADAS, V2X, 등.
가연성 등급별: UL 94 다섯-0—the highest vertical burn rating, requiring self-extinguishment within 10 seconds with no flaming drips.
3. Core Parameters and Technical Specifications
| 매개 변수 | 사양 | 참조 표준 |
|---|---|---|
| 라미네이트 | S1000-2M (성이 기술) | IPC-4101/126 |
| 레이어 수 | 14 레이어 | - |
| 보드 두께 | 1.6 ± 0.16 mm | IPC-6012F |
| Minimum Laser Via Diameter | 0.10 mm | - |
| Minimum Mechanical Hole Diameter | 0.20 mm | - |
| 최소 트레이스 너비 / 간격 | 75 μm / 75 μm | IPC-2221C |
| 종횡비 | 8:1 | IPC-2221 |
| 유리전이온도 (Tg) | 180℃ (DSC) | IPC-TM-650 2.4.25 |
| 열분해 온도 (Td) | 355℃ | Shengyi S1000-2M Datasheet |
| 유전 상수 (Dk @ 1GHz) | 4.6 | Shengyi S1000-2M Datasheet |
| 소산 인자 (Df @ 1GHz) | 0.013 | Shengyi S1000-2M Datasheet |
| 가연성 등급 | UL 94 다섯-0 | UL 94 기준 |
| 특수공정 | 2 레이저 드릴링, 3 Laminations | - |
Aspect Ratio Calculation is a critical process parameter in PCB 제조 that directly determines plating quality and through-hole reliability. IPC-2221 지침에 따라, Aspect Ratio = Board Thickness ÷ Drilled Hole Diameter. For this product: 1.6 mm ÷ 0.2 mm = 8:1. IPC-2221 recommends a maximum aspect ratio of 8:1 에게 10:1 for conventional electrolytic plating processes. 그만큼 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. It is alead-free compatible high-Tg material.
핵심 성능 매개 변수 (원천: Shengyi Technology official datasheet and IPC-TM-650 test methods):
| 매개 변수 | 값 | 테스트 방법 |
|---|---|---|
| Tg (유리전이온도) | 180℃ (DSC) | IPC-TM-650 2.4.25 |
| Td (열분해 온도) | 355℃ | Shengyi Datasheet |
| T260 | > 60 분 | IPC-TM-650 |
| T288 | 30 분 | IPC-TM-650 |
| CTE (Z축, Tg 이하) | 41 ppm/°C | IPC-TM-650 |
| CTE (Z축, Tg 이상) | 208 ppm/°C | IPC-TM-650 |
| 껍질 힘 (after 288°C solder float) | 1.3 N/mm | IPC-TM-650 |
Core Advantages of S1000-2M:
- Mid-Loss Characteristics: Df의 경우 0.013 @ 1GHz, this material offers approximately28% lower dielectric loss compared to standard FR-4 (Df ≈ 0.018).
- High Thermal Resistance: Tg of 180°C and Td of 355°C meet the stringent requirement of continuous operation above 125°C in automotive environments.
- CAF (전도성 양극 필라멘트) 저항: Suitable for high-multilayer PCBs and high-humidity environments.
- UL 94 다섯-0 가연성 등급: Self-extinguishes within 10 seconds with no flaming drips.
5. 디자인 필수사항: 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 포함하다: core layer lamination → first build-up layer lamination → second build-up layer lamination.
5.2 마이크로 비아 기술
- 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 Fine-Line Circuitry
Minimum trace width and spacing of 75 μm (약 3 밀) comply with IPC-2221C requirements for fine-line design. This precision supports fan-out routing for 0.5 mm pitch BGAs.
5.4 임피던스 제어
DK와 함께 4.6 @ 1GHz, S1000-2M enables characteristic impedance control at 50Ω, 90오, and 100Ω through adjustment of trace width and dielectric thickness—meeting the signal integrity requirements of in-vehicle communication systems.
6. 작동 원리: How Does an HDI Board Achieve High-Density Interconnection?
Traditional multilayer PCBs rely onthrough-holes that penetrate the entire board thickness for layer-to-layer connections—consuming significant routing area.HDI PCB technology overcomes this limitation through several innovations:
1. 블라인드 비아 기술: Laser-drilled microvias connect only the outer layer to the adjacent inner layer (예를 들어, L1-L2) 보드 전체를 관통하지 않고.
2. Buried Via Technology: Mechanically drilled vias are completely contained within the core layer (예를 들어, 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. 성능 특성: Why Is This Board Ideal for Automotive Communication?
7.1 IPC-6012FA Automotive Standard Compliance
12월 2025, IPC (now the Global Electronics Association) officially releasedIPC-6012FA, 그만큼Automotive 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% 에게maximum of 5% for Class 3/A
- Barrel Copper Thickness: Increased from 25 µm to28 μm for Class 3/A
- IST (Interconnect Stress Testing): Changed from optional tomandatory, 최소한의500 사이클 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 분, and T288 of 30 분, S1000-2M ensures dimensional stability and dielectric performance under extreme thermal conditions.
7.3 신호 무결성
In-vehicle communication systems (V2X, ADAS, Automotive Ethernet) continue to push operating frequencies higher. Df의 경우 0.013 @ 1GHz, S1000-2M is a mid-loss material that supports10G–25G SerDes channels with excellent performance over link lengths up to 20 신장.
7.4 Vibration Resistance
IPC-6012FA specifically addresses automotive vibration environments. The 14-layer HDI board’s multilayer laminated structure provides excellent mechanical strength. 의 조합 0.10 mm laser microvias and 0.20 mm mechanical holes ensures connection reliability under vibration.
8. 제조공정: 원자재부터 완제품까지
단계 1: Inner-Layer Core Fabrication
- Core material cutting → inner-layer circuit imaging → etching → AOI inspection
단계 2: First Lamination
- Stack multiple inner-layer cores with prepreg → high-temperature high-pressure lamination → core substrate (N layer) 형성
단계 3: First Laser Drilling & 도금
- First laser drilling on both sides of the core (forming L1-L2, L13-L14 microvias) → desmear → electroless copper deposition → electrolytic copper filling
단계 4: First Build-Up Lamination
- Laminate first build-up layer material on both sides of the core →Second Lamination
단계 5: Second Laser Drilling & 도금
- Second laser drilling (forming L2-L3, L12-L13 microvias) → desmear → electroless copper deposition → electrolytic copper filling
단계 6: Second Build-Up Lamination
- Laminate second build-up layer material on both sides of the core →Third Lamination
단계 7: 기계적 드릴링
- Drill 0.20 mm mechanical through-holes and buried vias (within L3-L12 core)
단계 8: Outer-Layer Circuit Fabrication
- Outer-layer circuit imaging → etching → solder mask → surface finish (동의하다, 등.)
단계 9: 최종검사
- Electrical testing → 비행 프로브 testing → final AOI → reliability sampling (IST, 열 사이클링, 등.)
9. 응용 시나리오: Core Interconnection Solutions for In-Vehicle Communication Systems
1. 고급 운전자 지원 시스템 (ADAS)
ADAS requires multi-sensor fusion (밀리미터파 레이더, LIDAR, 카메라). 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) 의사소통
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. 배터리 관리 시스템 (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. UGPCB를 선택하는 이유는 무엇입니까??
- 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
- 인증 된 자료: S1000-2M certified to UL 94 다섯-0, compliant with IPC-4101/126 specifications
- 엔드 투 엔드 품질 관리: Full-process inspection from raw materials to finished products, ensuring Class 3/A reliability
- 빠른 응답: Professional engineering team providing DFM (제조 가능성을위한 설계) reviews
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데이터 소스 선언
The technical data and standard information cited in this document are derived from the following authoritative sources:
- IPC (Global Electronics Association) — IPC-6012F경질 인쇄 기판의 자격 및 성능 사양 (십월 2023), IPC-6012FAAutomotive Applications Addendum (December 2025), IPC-2221C인쇄 기판 설계에 대한 일반 표준 (팔월 2025), IPC-4101E경질 및 다층 인쇄 기판용 기본 재료 사양, IPC-TM-650테스트 방법 매뉴얼
- 성이 기술 — S1000-2M Product Datasheet and Technical Data Sheet
- UL (보험업자 실험실) — UL 94 다섯-0 Flammability Rating Standard
메모: 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.
