ESD static electricity test for automotive components

The electrostatic discharge (ESD) test of automotive components refers to conducting an electrostatic discharge (ESD) test on automotive components to test their ability to withstand electrostatic interference. Electrostatic discharge is caused by the difference in charge accumulated on the surface of an object or between different parts. The voltage of electrostatic discharge can far exceed the normal working voltage, which can cause malfunctions in automotive electronic components, sensors, and computer control modules.

The electrostatic charging test for automotive ESD is based on the GBT19951-2019&ISO10605 standards. This standard specifies ESD testing procedures for automotive, truck, and motorcycle components. During testing, professional electrostatic discharge guns and ESD testing equipment are used to apply electrostatic discharge to the surfaces of various parts of the car to simulate a real electrostatic discharge environment. During testing, attention should be paid to preventing harm to the testing personnel and the safety of the vehicle system itself.

Through ESD electrostatic charging tests, car manufacturers can evaluate the ability of car components to withstand electrostatic discharge to ensure the integrity and reliability of car systems. This helps to improve the reliability of the vehicle and reduce maintenance costs.

1、 Test Table Layout

GBT19951-2019&ISO10605 Static ESD Test Table Layout - Top View is as follows

Figure 1 Top view of ESD test table layout

Picture caption:

(1) Field coupled flat plate (at least 10mm larger in all directions than DUT and at least 160mm in size) × 350mm, conical part connected to HCP);

(2) Field coupling strip supporting the wiring harness (width 40mm);

(3) Discharge island (diameter 80mm);

(4) Place a non-conductive block (r<2.5, height 50mm) for the DUT and wiring harness.

Note: The field coupling plate and field coupling strip are made of copper or brass, with a thickness of 0.5mm~2mm. The tolerance for dimensions is ± 5%.

Physical object as shown in the picture

2、 Direct discharge test arrangement

Figure 2 Layout of Direct Discharge Test

Picture caption:

(1) Field coupled flat plate;

(2) Field coupling band;

(3) Discharge island;

(4) Insulating blocks for placing DUTs and wiring harnesses;

(6) DUT wiring harness;

(7) Battery;

(8) Peripheral or supporting devices;

(9) Artificial network (if used);

(10) Grounding reference points for batteries and supporting equipment;

(11) The nearest distance to ground of the DUT (if required);

(12) HCP, generator, and DUT safety grounding position I

(13) Two 470kQ high-voltage resistors connected to ground

(15) ESD generator host

Note: The tolerance for dimensions is ± 5%

3、 Indirect discharge test arrangement

Figure 3 Layout of Indirect Discharge Test

Picture caption:

(1) Field coupled flat plate;

(2) Field coupling band;

(3) Discharge island;

(4) Insulating blocks for placing DUTs and wiring harnesses;

(6) DUT wiring harness;

(7) Battery;

(8) Peripheral or supporting devices;

(9) Artificial network (if used);

(10) Grounding reference points for batteries and supporting equipment;

(11) DUT nearest ground (if required)

(12) Safe grounding positions for HCP, generator, and DUT;

(13) Two 470k high-voltage resistors connected to ground;

(15) ESD generator host.

Note: The tolerance for dimensions is ± 5%