最新通用电子元件环境/耐久性规范GMW 3172-2018.pdf【详细介绍】

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GMW 3172-2018.pdf是一份由通用汽车公司发布的关于电气/电子元件环境/耐久性的总体规范。这份标准于2018年4月发布，共计120页。该标准是通用汽车公司严格保密的知识产权，未经许可不得擅自复制或传播。 GMW 3172-2018.pdf的目的在于规范电气/电子元件在各种环境条件下的性能要求。通过该标准，通用汽车公司希望确保其产品在不同环境中能够保持稳定可靠的工作状态，提高产品的耐久性和可靠性。该标准的引入部分介绍了标准的背景和目的，以及适用范围和定义术语等内容。随后的章节结构清晰，包括对电气/电子元件的环境条件、环境试验方法、测试设备的要求、故障排除和记录等方面进行了详细的规定和要求。在环境条件方面，GMW 3172-2018.pdf涵盖了各种可能会影响电气/电子元件性能的因素，包括温度、湿度、振动、冲击等。标准要求厂商在设计和制造电气/电子元件时必须考虑这些环境因素，以确保产品在实际使用过程中不会出现故障或损坏。在环境试验方法方面，GMW 3172-2018.pdf规定了一系列标准化的测试程序和要求，以评估电气/电子元件在不同环境条件下的性能。这些试验项目包括温度循环试验、湿热循环试验、振动试验、冲击试验等，旨在模拟产品在实际使用过程中可能遇到的各种环境情况。此外，标准还要求厂商使用符合要求的测试设备进行环境试验，并制定相应的测试计划和记录。在故障排除和记录方面，标准规定了厂商应该如何处理试验中出现的故障，以及如何记录试验结果和分析数据。综上所述，GMW 3172-2018.pdf是一份具有指导性和约束力的标准文件，适用于各类电气/电子元件的设计、制造和测试过程。通过遵守该标准，厂商可以提高其产品的质量和性能，满足市场和用户的需求，进而提升竞争力和市场份额。这份标准的发布对于整个电气/电子元件行业来说具有重要意义，有望推动行业技术水平的提升和标准化程度的提高。

GM WORLDWIDE ENGINEERING STANDARDS

Template For ENG STDS

GMW3172

GM Confidential

April 2018

Page 16 of 120

Figure 4: Environmental/Durability Test Flow for Product Validation (continued)

4.2.2 Environmental Hardware Design Review. An Environmental Hardware Design Review, as shown in

Figure 1, shall be conducted for all new components, as well as for current production components with

modifications, to ensure that the design meets Environmental/Durability compliance.

An Environmental Hardware Design Review is required for any hardware-related modifications (such as internal

part swaps or material changes) and manufacturing process changes (such as tooling, solder process, or

manufacturing location). Software changes that may affect GMW3172-related requirements shall also be

considered. For semiconductor changes, refer to GMW16552.

Environmental Hardware Design Review(s) shall be scheduled by the GM CVE and led by the GMW3172 ENV

SME.

The objectives of the Environmental Hardware Design Review shall be to:

• Review component schematic design and circuit board layout

• Review component assembly and mechanical construction

• Review technical rationale of Electrical/Electronic design concept, Mechanization design concept, and

chosen materials

• Examine any prior relevant analysis, calculations, and test results

• Discuss potential impacts to the product design and manufacturing process using Appendix A (Lead-Free

Solder Considerations) as a reference

• Discuss lead-free solder risks and mitigation in the design and in the supply chain

GM WORLDWIDE ENGINEERING STANDARDS

Template For ENG STDS

GMW3172

GM Confidential

April 2018

Page 17 of 120

• Evaluate potential changes to the component design

• Propose solutions to problems and appropriate re-validation

• Verify that the proposed circuit board and assembly design satisfies component Environmental/Durability

requirements

• Evaluate manufacturing processes and changes

• Evaluate software changes that may affect GMW3172-related requirements

• Perform Thermal Fatigue Analysis

• Establish the part number(s) and family association(s) for CEMENT

Supplier Deliverables:

The Environmental Hardware Design Review Checklist shall be filled out in its entirety by the supplier in

preparation for the Environmental Hardware Design Review. If required, the Parts Substitution Matrix shall be

filled out in its entirety by the supplier in preparation for the Environmental Hardware Design Review. These

forms are available from GM Supply Power or the GMW3172 ENV SME.

The following documentation shall be delivered to the GMW3172 ENV SME and/or GM CVE at least 10 working

days ahead of the scheduled meeting:

• The Environmental Hardware Design Review Checklist

• The Parts Substitution Matrix, if required

• Functional description

• Vehicle location

• Interface description(s), internal and external to the component

• PCB (Printed Circuit Board) Layout

• Hardware Schematic drawing

• Electrical parts list and associated datasheets

• Material datasheets for all parts (such as materials used for PCB, solder, flux, assembly, connections, etc.)

including the Coefficients of Thermal Expansion

• Part placement drawing

• Solder process description (solder alloy, solder temperature profile, cleaning material, process, etc.)

• Assembly Mechanization (assembly drawings, mounting/support locations, openings in housing, cooling

concept, etc.)

Note: When available, actual hardware samples or physical mock-ups for visual examination are required.

Attendees:

GM:

• GMW3172 ENV SME

• Component-Responsible Validation Engineer

• DRE

• EMC SME (for CEMENT-related discussion)

• Supplier Quality Engineer (optional)

Supplier:

• Hardware Design Engineer

• Electrical System Engineer

• Environmental/Durability Expert

• Validation/Test Engineer

GM WORLDWIDE ENGINEERING STANDARDS

Template For ENG STDS

GMW3172

GM Confidential

April 2018

Page 18 of 120

• Project Manager (optional)

4.2.3 Analytical Activities. The supplier shall conduct Analytical Activities and provide the analytical models

and assumptions according to the approved GMW3172 Component Environmental Test Plan (CG3043). Each

analytical result shall be reported to the GM CVE, GMW3172 ENV SME, and DRE for evaluation and approval.

4.2.4 Development Activities. The supplier shall conduct Development Activities and provide test samples to

GM (may include pre and post test samples) according to the approved GMW3172 Component Environmental

Test Plan (CG3043). Each test result shall be reported to the GM CVE, GMW3172 ENV SME, and DRE for

evaluation and approval.

Components that have failed during a test shall be analyzed immediately by the supplier. The supplier shall

contact the GM CVE (or GMW3172 ENV SME) immediately to define further actions. The component shall not

be repaired or further used in the Test Flow, unless approved by GM.

4.2.5 Design Validation Activities. The supplier shall conduct Design Validation (DV) and provide test samples

(may include pre and post test samples) to GM according to the approved GMW3172 Component Environmental

Test Plan (CG3043). Each test result shall be uploaded in CEMENT for approval.

Components that have failed during a test shall be analyzed immediately by the supplier. The supplier shall

contact the GM CVE (or GMW3172 ENV SME) immediately to define further actions. The component shall not

be repaired or further used in the Test Flow, unless approved by GM.

4.2.6 Product Validation Activities. The supplier shall conduct Product Validation (PV) and provide test

samples (may include pre and post test samples) to GM according to the approved GMW3172 Component

Environmental Test Plan (CG3043). Each test result shall be uploaded in CEMENT for approval.

Components that have failed during a test shall be analyzed immediately by the supplier. The supplier shall

contact the GM CVE (or GMW3172 ENV SME) immediately to define further actions. The component shall not

be repaired or further used in the Test Flow, unless approved by GM.

4.3 Summary of A/D/V Activities. Table 5 is a default summary of A/D/V activities that shall be used for defining

tests that will be included in the GMW3172 Component Environmental Test Plan (CG3043) with GM approval.

The GM-approved GMW3172 Component Environmental Test Plan (CG3043) defines the required subset of

GMW3172 test procedures.

Table 5: Summary of A/D/V Activities

Activity Phase FSC Operating

Type

Continuous

Monitoring

Functional

Cycling

Test Setup and Component Verification

5-Point Functional/Parametric

Check

D, DV,

A 2.1, 3.2

Yes N/A

1-Point Functional/Parametric

Check

D, DV,

A 2.1, 3.2

Yes N/A

Continuous Monitoring

D, DV,

N/A

As defined

in each test

Yes Yes

Functional Cycling

D, DV,

N/A 2.1, 2.2, 3.1, 3.2

Yes Yes

Visual Inspection and Dissection

– Design Review Based on Test

Results (DRBTR)

D, DV,

N/A 1.1

N/A N/A

Cross Section and Inspection

DV, PV

N/A 1.1

N/A N/A

Dimensional Check

DV, PV

N/A 1.1

N/A N/A

GM WORLDWIDE ENGINEERING STANDARDS

Template For ENG STDS

GMW3172

GM Confidential

April 2018

Page 20 of 120

Activity Phase FSC Operating

Type

Continuous

Monitoring

Functional

Cycling

Highly Accelerated Life Test

(HALT)

D N/A 3.2 Yes Yes

Climatic

Temperature Measurement

D, DV,

N/A 3.2 N/A Yes

Low Temperature Wakeup

D, DV,

A 1.2, 3.2 Yes No*

Frost

D, DV,

A 1.2, 3.2 Yes Yes

Highly Accelerated Stress Test

(HAST)

D A 3.2 Yes Yes

Design Validation (DV)

Electrical

Parasitic Current

DV, PV

N/A 2.1, 2.2 Current only N/A

Power Supply Interruptions

DV, PV

A, C 3.2 Yes No*

Battery Voltage Dropout

DV, PV

A, C 2.1, 3.2 Yes No*

Sinusoidal Superimposed

Voltage

DV, PV

A 3.2 Yes No*

Pulse Superimposed Voltage

DV, PV

A 3.2 Yes No*

Intermittent Short Circuit to

Battery and to Ground for

Input/Output

DV, PV

C 2.1, 3.2 Yes No*

Continuous Short Circuit to

Battery and to Ground for

Input/Output

DV, PV

C 3.2 Yes No*

Multiple Power and Multiple

Ground Short Circuits Including

Pass Through

DV, PV

D, E 3.2 Yes No*

Open Circuit – Single Line

Interruption

DV, PV

C 3.2 Yes No*

Open Circuit – Multiple Line

Interruption

DV, PV

C 3.2 Yes No*

Ground Offset

DV, PV

A 3.2 Yes Yes

Power Offset

DV, PV

A 3.2 Yes Yes

Discrete Digital Input Threshold

Voltage

DV, PV

N/A 3.2 Yes No*

Over Load – All Circuits

DV, PV

D, E 3.2 Yes No*

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