Study on failure distribution characteristics and mechanism of semiconductor coolers for medical devices
10.19745/j.1003-8868.2025084
- VernacularTitle:医疗设备用半导体制冷器失效分布特性和机理研究
- Author:
Yan-cai GAO
1
;
Wen-juan ZHOU
1
;
Xin LU
1
;
Meng-guang XU
1
Author Information
1. 安图实验仪器(郑州)有限公司,郑州 450016
- Publication Type:Journal Article
- Keywords:
medical device;
semiconductor cooler;
failure pattern;
failure distribution characteristic;
failure mechanism
- From:
Chinese Medical Equipment Journal
2025;46(5):34-38
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the failure distribution characteristics of semiconductor coolers for medical devices and to analyze the failure mechanisms at different time periods.Methods Firstly,a sample of a pilot semiconductor cooler used in some medical device was used as the object,and all the failure data within the last 4 years were collected,screened and organized.Secondly,the failure data were fitted based on the Weibull distribution,and the failure distribution characteristics were analyzed by shape parameters.Finally,based on the failure distribution characteristics,mechanism analysis was carried out with the typical failure samples selected from three time periods of early failure,random failure and wear-out failure,and the causes of failure were found out.Results The failures of semiconductor coolers occurring in the three time periods presented different types of mechanisms,and the failure distribution conformed to the Weibull distribution.The causes included the mechanical stress damage for early failures,the process defect for random failures and water vapour penetration due to sealant aging after long-term operation of the semiconductor cooler.Conclusion The failure patterns of semiconductor coolers for medical devices are revealed effectively,providing a scientific basis for the design,improvement and reliability assessment of semiconductor coolers used in medical equipment.[Chinese Medical Equipment Journal,2025,46(5):34-38]
