Automotive-Electronics2020-09-17T02:13:09+00:00

Automotive electronic products have different reliability requirements for PCBs in different parts, Huihe Circuit passed the IATF16949 automotive quality management system standard, Strictly follow the requirements of the control plan to produce, monitor, record and analyze, Ensure the stability of process parameters and the traceability of the production process.

Applicable Products

501-Huihe Circuit is a professional PCB circuit board manufacturer

High precision multilayer circuit board

Minimum line width and line spacing 3/3mil
BGA 0.4pitch, the smallest hole is 0.1mm
Used in industrial control, consumer electronics

502-Huihe Circuit is a professional PCB circuit board manufacturer

Blind and buried via circuit board

Use micro blind holes to increase the line distribution density
Improve radio frequency and electromagnetic wave interference, heat conduction
Used in servers, mobile phones, digital cameras

505-Huihe Circuit is a professional PCB circuit board manufacturer

RF microwave high frequency board

Low dielectric constant Dk, high transmission rate
Low dissipation factor Df, low dielectric loss
Applied in 5G, rail transit, Internet of Things

Classification of automotive circuit boards

Car body electronic control system

On-board electronic control system

Engine control system

Ignition control system
Fuel control system
Air supply system

Body control system

Power management system
Safety management system
Lighting system
Display monitoring system

Chassis control system

ABS control system
Electronic stability system
Pressure monitoring system
Steering control system

Car TV
Driving recorder
Parking sensor system
Car navigation system
Car camera system

Automobile electrification and intelligence will be the core driving force

The requirements of millimeter wave radar for PCB substrate are as follows:

       Millimeter-wave radar includes two core hardware: MMIC circuit and radar antenna high-frequency PCB board. There are high requirements in the choice of substrate and PCB processing. The base material needs to use high-frequency materials. The production of high-frequency PCB boards has higher requirements for the manufacturer’s process control capabilities, such as copper thickness and line width tolerance. The price of PCB for millimeter wave radar is generally 1.5-3 times that of ordinary PCB.

High-frequency substrate corresponding to 24GHz system

factory

Product brand

Resin composition type

Dk (below 10GHz)

Df (below 10GHz)

Dk thermal change rate ppm/℃

Rogers

RO4835

Hydrocarbon

3.48±0.05

0.0037

+50 (-50~150℃)

Taconic

TLF-35A

PTFE

3.5

0.0016

__

Shengyi Technology

S7136H

Hydrocarbon

3.42±0.05

0.003

__

Corresponding to 77GHz (or 79GHz) system high frequency substrate

factory

Product brand

Resin composition type

Dk (below 10GHz)

Df (below 10GHz)

Dk thermal change rate ppm/℃

Rogers

RO3003

PTFE+ceramic (no glass fiber)

3±0.04

0.001

-3 (-50~150℃)

Taconic

TSM-DS3

PTFE

(Tk) 5.4 (-30~120℃)

0.0011

(Tk) 5.4 (-30~120℃)

Taconic

TAL-28

PTFE+Nano filler

2.8

0.0012

(Tk) 2.24(-30~120℃)

Shengyi Technology

GF77G

PTFE

2.28±0.04

0.0012

__

New energy vehicle PCB consumption and value

        The amount and value of PCBs for new energy vehicles have increased significantly. At this stage, the demand for PCBs in traditional cars is relatively small, and the value of PCBs is relatively low. The main reason is that the power system requires the most PCBs, accounting for 32%. In comparison, the average PCB consumption per car for traditional cars is about 1 square meter, and the value is about 60 US dollars. The PCB consumption of high-end models is 2-3 square meters, the value is about 120-130 US dollars, and the PCB consumption of new energy vehicles is close to 8 square meters. , The value of a bicycle is as high as $400.

4 major systems and subsystems of automotive electronics

system

Subsystem

PCB ratio

Power control system

Ignition control system, fuel injection control system, engine idle control system, exhaust gas recirculation system, anti-lock brake control system

50%

Safety control system

Automatic transmission control system, suspension electronic system, power steering electronic control system, cruise control system

22%

Body Electronic System

Automatic air conditioning system, electronic instrument system, airbag system, automotive electronic anti-theft system, head-up display system

25%

Entertainment communication system

Electronic instrument system, car audio system, car navigation system, electronic map system

25%3

PCB common loads and failure modes

      PCB is a key component of these electronic systems, and special attention must be paid to PCB failure modes that may cause short circuits or open circuits. Reliability is the core requirement of automotive PCB. In an unmanned car powered by several hundred volts, the PCB failure mode must be thoroughly understood to ensure reliable operation.

Possible failure modes

1. Plated through holes can crack in the copper layer
2. Cracks in the outer copper layer
3. Micro via hole crack
4. Cracks in the prepreg
5. Electrochemical migration of PCB surface
6. Cracks in solder mask

PCB environmental load

1. Temperature cycle and storage
2. bend
3. Vibration
4. Humidity
5. Combination of several loads

PCB assembly load

1.Reflow soldering
2. Selective soldering
3. Compression technology
603-Huihe Circuits professional PCB circuit board circuit board manufacturer reliability is the core requirement of the car for PCB

Huihe Circuits knows that the reliability of automotive electronics is equivalent to the reliability of automobiles, so it is necessary to ensure that the reliability of automotive electronics meets the requirements of service life and environmental tolerance:

Huihe Circuits takes the following measures to ensure that PCBs for automotive electronics improve reliability:

Why choose Huihe Circuit?

7-Huihe Circuits professional PCB circuit board manufacturer

      Huihe Circuit has a production workshop of 12,000 square meters, with more than 20 senior engineers now and a monthly production capacity of 35,000 square meters. It is a professional manufacturer of PCB circuit boards. Huihe Circuits has obtained UL, ISO9001, IATF16949, ISO14001, ISO13485, OHSAS18001, RoHS, CQC and other management system and product certifications, and conforms to IPC international inspection standards.

6-Huihe Circuit is a professional PCB circuit board manufacturer

      Huihe Circuits has been constantly striving to improve the quality of PCB circuit boards to be close to flawless. Huihe Circuits not only has a strict and complete quality control system, but also has sophisticated production and testing equipment. Huihe Circuit’s professional and thoughtful service capabilities and complete quality control system have won Huihe Circuit a good reputation among customers.

ISO14001, ISO13485, OHSAS18001, RoHS, CQC and other management system and product certifications, and conforms to IPC international inspection standards.

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High-quality imported raw materials to ensure product quality from the source

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5-Huihe Circuit, a professional PCB circuit board circuit board manufacturer (3)
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5-Huihe Circuit, a professional PCB circuit board circuit board manufacturer (5)
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