Description

In order to solve the problem that there is no suitable supporting material with low permiƫvity(εr ≤ 1.4) in the vehicle accessories EMC laboratory for a long time, CHANGEN invited the top domestic experts in materials science to make use of the aerospace technology to create a solid and durable supporting material with low permiƫvity. This material solves the problems of soft, low strength, poor heat resistance and easy breakage of the traditional foams.

Function

Excellent permittivity(εr)
Excellent permeability(μr)
Low cost
Rugged structure

Specification

Relative permittivity	εr≤1.4 (see the third-party test report provided by CHANGEN for details)
Relative permeability	μr≤1.1 (see the third-party test report provided by CHANGEN for details)
standard	CISPR 15* / CISPR 16-2-1* / ISO 11452 series / ISO 7637 series / ISO 10605 series / specifications of each OEM
Dimensions	see basic config
Dimension Tolerance	Length / Width: ± 5mm, Height: 0mm / + 2mm, hole depth: ± 2mm (if any)
Compressive strength	3.0 kg/cm2
Closure rate	≥93%
Water absorption rate	≤2%
Thermal conductivity	≤0.024 W/m × K
Dimensional instability	≤1.2%
Temperature resistance	-60℃ to +250 ℃
Recommended use	place test harness during test
Tips	1. Due to material characteristics, irregular pores may appear on the surface of the product. This is normal and totally does not affect performance. 2. The material has a hard texture and needs to be processed with professional equipment. It is not recommended that users process the probe hole and injection clamp hole by themselves to avoid unnecessary material loss and personal injury during processing.
* Note: The dielectric constant of the supporting material used in the CISPR 15 CDNE method was revised to εr≤1.4 according to the 2019 IEC meeting.

Basic Config

Model	Remark
CHANGEN LF525	500mm（L）× 200mm（W）× 50mm（H）
CHANGEN Lf125	1000mm（L）× 200mm（W）× 50mm（H）
CHANGEN LF225	2000mm（L）× 200mm（W）× 50mm（H）
CHANGEN LF125BCI	1000mm（L）× 200mm（W）× 50mm（H）BCI测试
CHANGEN LF125BCI-300	1000mm（L）× 300mm（W）× 50mm（H）BCI测试
CHANGEN LF225 BCI	2000mm（L）× 200mm（W）× 50mm（H）BCI测试
CHANGEN customized	Customizable according to needs

Option Config

Link

Permittivity & Permeability Test Report