Reliability Classification Catalog of Domestic Automotive-Grade Chips (2025)
Date:2025-06-09 15:57
Based on Chinese automotive industry standards and the practices of major manufacturers, here is theReliability Classification Catalog of Domestic Automotive-Grade Chips (2025), covering functional safety levels, temperature ranges, lifetime requirements and typical application scenarios. The data is compiled from CAAM, the AEC-Q series standards and technical white papers from domestic chip vendors:
🚗 I. Core Reliability Classification Standards for Automotive-Grade Chips
1. Functional Safety Levels (ISO 26262 ASIL)
| Level | Target failure rate | Application scenarios | Representative domestic chips |
|---|---|---|---|
| ASIL-D | ≤10 FIT* | Powertrain control (motor/battery management) | Horizon Journey 5 (BPU) |
| ASIL-C | ≤100 FIT | Chassis control (ESP/steering) | SemiDrive E3 MCU |
| ASIL-B | ≤1,000 FIT | Body control (windows/lights) | BYD Semiconductor BF30xx series |
| QM | No mandatory requirement | Infotainment systems | Rockchip RK3588M |
*FIT (Failure In Time): number of failures per billion hours of operation
2. Operating Temperature Grades (AEC-Q100)
| Grade | Temperature range | Typical applications | Domestic chip examples |
|---|---|---|---|
| Grade 0 | -40℃ ~ +150℃ | Engine-bay ECU | AutoChips AC7840x MCU |
| Grade 1 | -40℃ ~ +125℃ | Transmission control/drive motor | GigaDevice GD32A503 |
| Grade 2 | -40℃ ~ +105℃ | On-board charger (OBC) | Unigroup Guoxin THD89 series |
| Grade 3 | -40℃ ~ +85℃ | In-vehicle infotainment system | Allwinner T507 |
🔧 II. Key Reliability Indicators for Domestic Automotive-Grade Chips
1. Lifetime and Durability
| Item | L1 (Basic) | L2 (Enhanced) | L3 (Ultra-high) |
|---|---|---|---|
| Design life | 10 years / 200,000 km | 15 years / 300,000 km | 20 years / 500,000 km |
| Cycle durability | >5,000 cycles | >10,000 cycles | >20,000 cycles |
| High-temperature aging test | 1,000 hours @150℃ | 2,000 hours @150℃ | 3,000 hours @175℃ |
Representative products：
- L1: Fudan Microelectronics FM11RF08 (NFC car key)
- L2: Black Sesame Technologies Huashan A1000 (ADAS SoC)
- L3: Huawei Ascend 610 (autonomous-driving compute chip)
2. Environmental Adaptability Certification
| Test item | Standard | Acceptance requirement |
|---|---|---|
| Mechanical vibration | GMW3172 | 20g RMS, 200 hours without failure |
| Humidity-heat cycling | IEC 60068-2-30 | Fully functional after 1,000 cycles |
| Salt-spray corrosion | ISO 16750-4 | 96 hours without corrosion failure |
| ESD immunity | AEC-Q100-002 | HBM ≥8kV, CDM ≥1.5kV |
📈 III. 2025 Reliability Classification Catalog of Domestic Automotive-Grade Chips (Selected Vendors)
| Vendor | Chip type | Model | Safety level | Temperature grade | Reliability certification |
|---|---|---|---|---|---|
| BYD Semiconductor | IGBT module | BGD100G65L2 | ASIL-C | Grade 0 | AEC-Q101, ISO 26262 |
| Horizon Robotics | AI accelerator | Journey 6 | ASIL-D | Grade 1 | ISO 21434 (cybersecurity) |
| SemiDrive | MCU | E3429 | ASIL-B | Grade 1 | AEC-Q100 Rev-H |
| Novosense | Isolated gate driver | NSi6602B | ASIL-C | Grade 0 | UL 1577, VDE 0884-11 |
| Motorcomm | Ethernet PHY | YT8512H | ASIL-B | Grade 2 | IEEE 802.3cg（10BASE-T1S） |
🛠️ IV. Selection Recommendations and Challenges
1. Key Progress in Domestic Substitution
- Power devices: BYD/StarPower IGBT modules have passed certification by German automakers (e.g. the Volkswagen MEB platform)
- MCU: the SemiDrive E3 series failure rate is <50 FIT (benchmarked against Infineon TC3xx)
- Sensors: Saizhuo Electronics Hall-effect chips achieve ±0.5% temperature drift from -40 to 150℃ (on par with TI)
2. Remaining Challenges
- Long certification cycles: AEC-Q100 Grade 0 certification takes 18–24 months
- Material bottlenecks: the localization rate of high-reliability packaging substrates (e.g. AMB ceramics) is <30%
- Lack of system-level validation: domestic chips lack tens of millions of kilometers of real-vehicle data
💎 Summary
In 2025, the reliability classification of domestic automotive-grade chips has formed a “four-horizontal, three-vertical” framework：
✅ Four horizontal: functional safety (ASIL), environmental tolerance (Grade), lifetime (L1-L3) and scenario fit (powertrain/chassis/body/ADAS)
✅ Three vertical: chip design (ISO 26262), manufacturing (IATF 16949) and testing (AEC-Qxx)
🔍 Data sources：
- CAAM, White Paper on the Development of China's Automotive Chip Industry (2025)
- China Automotive Chip Industry Innovation Strategic Alliance (CACIA) classification catalog
- Vendor public data (2024 technical annual reports of Horizon, SemiDrive and BYD Semiconductor)