【经验】封装内部界面剥离或破裂?温度传感器IC需注意湿度敏感等级MSL!
笔者在做温度传感器IC选型的的时候,有很多用户会问到传感器的湿度敏感等级(MSL),比如我们以纳芯微的温度传感器NST112X为例,NST112是一款低功耗,高精度的数字温度传感器,该系列不同的型号MSL等级不同,我们在它的规格书中找到其中对MSL的描述:
表1 NST112X中的MSL等级
这时有些读者会有疑问,为什么温度传感器要注意湿度等级呢?
首先我们要了解什么是湿度敏感等级?湿度敏感等级湿度敏感等级MSL是Moisture Sensitivity Level的缩写,MSL是指一个元器件可以暴露在不高于86℉(30℃),60-85%相对湿度的环境中的最长安全时间。MSL从Level1到Level6实现等级范围划分,具体如下表:
表2 MSL等级划分
根据上表2与表1,易知NST112-DSTR的MSL等级为3,即在不高于86℉(30℃),60-85%相对湿度的环境中的最长安全时间是168小时,而NST112X-CWLR的MSL则是1,在此环境中最长安全时间是无限制的。
最后回到开头的问题:为什么温度传感器IC要注意湿度等级?因为温度传感器IC(特别是SMD)吸收空气中的水分后,元件通过回流焊时就可能出现问题,比如脱层、裂痕和爆米花效应,因为焊接过程中产生的强热会导致被吸收的水分出现汽化和膨胀现象,从而可能导致封装内部的界面剥离或破裂,封装内部线路也会因此断路,对整个电路板系统造成损坏。大部分半导体类的元件都比较容易受湿气影响,除了上述提到的传感器IC外,还有其他IC,LED等。
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SERIES,NSI8240CX-DSPR,NSD7312-Q1,NSM3013,NSM3012,NSA2860_SSOP16,NSA2862X,NSI6642B-DSWKR,NSM1071,NSM1072,NSI823XC,NSI6642A-DLAMR,NSD5604N,NSI319X,NSI6642D-DLAR,NSI8100NC,NSI6602B-Q1SWR,NSI6622ND-DSPNR,NSI6601B-DSPR,NSA2860X-QQNR,NSI8210NX,NSI6642D-DSWKR,NSI6602MF-DSWTR,NSD5604E,NIRSP31,NSI6602MNB-DSWTR,NST175,NST1075,NSI6602A-DSPNR,NCA9617A SERIES,NSI68010B-Q1SWAR,NSI1312D,NSI6642B-DSWR,NSI8222NX,NSI6601C-DSPR,NSI6622NB-DLAR,NSIP8841W1-DSWR,NSP1631,NSI8221CX-DSWVR,NSP1632,NSP1630,NSD56008-Q1HTSPR,NSI6622C-DLAR,NSM301X,NSM107X,NSI824XC,NSI6602VA-Q1SPNR,NSI6602ND-DLAR,NSI6801C-DSWFR,NSD3604-Q1,NCA3176,NSI6801MB-DSWVR,NSD3608-Q1QAJR,NSI1312S,NSI6622VB-Q1SWR,NSI6622B-Q1SPNR,NSD5604N-DHTSPR,NSD1624-DLAJR,NSI68011C-Q1SWAR,NSI6602VA-DLAMR,NSI6602NA-DLAMR,NSI6602NB-DSWR,NSD5604E-DHTSTR,NSR35XXX,NSI6622NB-Q1SWR,NSD5604N-Q1HTSPR,NSD1224X,NSI6602C-Q1SPNR,NSI8100W,NSI6622NA-DSPNR,NSIP8844W1-DSWR,NSI6622NB-DSWKR,NSE5702,NSE5701,NSI8100N,NSP183X,NCA1044-Q1DNR,NSI6622NC-DLAR,NCA1021S-Q1DNR,NSI6622VB-Q1SPNR,NCA1044N-Q1DNR,NSD16241-DSPKR,NSI3190,NSI6602VD-DSWR,NPC060N120A-QTOOT,NSI6622NA-Q1SWKR,NSE34050Q,NSD1224LA-DAFR,NSI8241SX,NSI6622NA-Q1SWR,NSI6622NC-Q1SPNR,NSI8231CX-DSWR,NSI1052-DSWR,NSPGL1 SERIES,NSI6622VA-Q1SPOR,NSA2860X_QQNR,NSI6801B-DSWFR,NSI6602B-Q1SPNR,NSI6601WC-DSWVR,NSI6651ASC-Q1SWR,NSC6272,NSI8263CX-DSWR,NSD8310-Q1HTSXR,NSC6273,NSREF31XX,NSI6622ND-DSWR,NSI6622NC-DSPNR,NSI6602NB-DLAR,NSI6602NB-DSPNR,NSA5312,NSI6622VC-Q1SWKR,NSPGL1,NSI6602A-Q1SWR,NSI6622NC-Q1SPOR,NSPGS2 SERIES,NSI6642C-DLAMR,NSR7808,NSI8220WX,NSI8266WX,NSD56008-Q1,NSD5604NE,NSI6622VA-Q1SPNR,NSI6602VB-DSWKR,NSL2161X-Q1,NCA1042BN-Q1SPR,NCA1057-Q1SPR,NCA1043B-Q1,NCA9511,NSI6602A-DSWR,NSC6280,NSI6602NA-Q1SWKR,NSD8308-Q1,NSI6602NC-DSWR,NSI6801TC-DDBR,NSI8242SX,NSI68515AC-DSWR,NSI6602B-DSWKR,NSI6602VD-DLAMR,NPCO60N120A-QTOIT,NSI8220CX-DSWVR,NSI6622NB-DSWR,NST235,NST117,NSI6602VC-DSWKR,NSI6602VC-Q1SWKR,NSI6602MB-DSWDR,NST118,NCA954X SERIES,NSD16242-Q1SPR,NCA9306 SERIES,NCA1044-Q1SPR,NSI6651,NSI6642B-DLAMR,NSI6602C-DSWKR,NSI8240NX,NSE34050 SERIES,NCA1057N-Q1DNR,NSP163X,NSI6602NC-DSPNR,NCA1042BN-Q1,NSI8221WX,NSI66X2,NSI6631ASC-Q1SWR,NSI6602MNC-DSWTR,NCA1042B-Q1DNR,NSI6642,NSI6601C-DSWVR,NIRS2X,NSI6601MB-DSWR,NSI8266SX,NSI6602NB-Q1SPOR,NCA34XX SERIES,NSI6602NC-Q1SPOR,NSD7310A,NSD8306-Q1,NSI6622ND-DLAMR,NSG65N15K,NSD12409-Q1SPR,NSE4250 SERIES,NCA1042CN-DSPR,NSI6602VA-DSWKR,NSI6642D-DLAMR,NCA1051N,NSI6642A-DSWKR,NIRS20N1-DSPR,NIRS21N1-DSPR,NSI6622NA-DLAR,NSC2860X-DQNR,NSI1042-DSWVR,NCA1042C-Q1SPR,NSI6602C-DSWR,NCA1057-Q1DNR,NSI8221CX-DSPR,NPD010N120A-DTOGT,NSI6602VB-Q1SWR,NSI8210CX-DSPR,NSD1026V-QISPR,NSD12416‒Q1,NSI1050-DDBR,NSI8241NX,NSI6602NC-Q1SPNR,NCA1042BN-Q1DNR,NSR10AXX SERIES,NST461,NSD2621X,NCA1042A-Q1,NSI8222WX,NST103,NSI1303D0X,NSI1303E2X,NSI6622A-Q1SWKR,NSI6602VC-DLAR,NSR31 SERIES,NSD16242-DSPR,NCA9555,NSI1052,NSC6360,NSC6362,NSI6622NB-DLAMR,NSI6651ALC-DSWR,NSC6364,NSI6602NA-DSPNR,NSI6622A-DLAR,NSI6622C-Q1SPNR,NCA1042C,NSI8220CX-DSWR,NSI6622C-DSPNR,NSA3166,NCA1042A-Q1SPR,NSIP8941W0-DSWR,NSI6642B-DLAR,NCA1042B-Q1,NSPGD1M,NSPAS3 SERIES,NSD1624-DSPR,NSI6602VA-Q1SWR,NSD1026V-Q1HMSR,NSI8242CX-DSWR,NSI6602MNC-Q1SWTR,NSL2163X-Q1,NST20,NIRS31,NSREF30XX,NCA9545,NSI6622NA-DLAMR,NSI1042,NSI6611,NCA9546,NSI6622B-DSPNR,NCA9306,NCA9548,NSD12416-Q1SPR,NSI6602MC-Q1SWTR,NSI8242NX,NSD8381-Q1QAIR,NSD8308-Q1HTSXR,NCA9617A,NST1001HA,NSI6602VA-DSWR,NSI1303D2X,NSI1050,NSI6601B-DSWVR,NSD7310-DHSPR,NSI6601,NSD731X-Q1,NCA1057N-Q1SPR,NSR7808GXX,NSD7312-Q1HSPR,NSI6602VB-DLAMR,NSI6602MNF-DSWTR,NSD1026V-DHMSR,NSA3300,NSI6602C-Q1SWKR,NSC2860X,NSD11416‒Q1,NSI6622NB-Q1SPNR,NCA1051N-DSPR,NSI6611ASC-DSWR,NSI22C11,NSI8230CX-DSWR,NSI6801B-DSPR,NSI6622A-DSPNR,NSD12409‒Q1,NSD5604NE-DHTSTR,NSPDSX SERI
NOVOSENSE Industrial Control Solution
型号- NSI6801,NSI1311,NSI1312,NSI824X,NSAD114X,NCA8244,NCA8245,NSM2017,NSM211X,NST175,NSM2019,NSM2013,NSI22C11,NSI68515,NSM2015,NSM2011,NSD5604,NSM2012,NSA2862X,NSR33XXX,NST86,NSOPA9XXX,NSI1300,NSI6801M,NSREF31XX,NSI1306,NST112X,NSI1303,NCA1044,NSI1305,NSR7808,NSE11409,NSI8266,NSI8100,NSR28C4X,NIRS21,NSI8260,NSOPA8XXX,NCA9555,NSI1200C,NSD1026V,NCA1042B,NSAD124X,NSD12416,NSI8608,NCA3176,NSCSA24X,NSI83086,NSM201X,NSI83085,NSM2113,NSM2311,NST235,NSR31XXX,NSA2860X,NST60,NSD1624,NST20,NIRS31,NSR104XX,NSR35XXX,NSD1224,NSREF30XX,NSCSA199,NSI1200,NSI1042,NSI1400,NSCSA21X,NSD11416,NSC2860X,NSI22C12,NCA1051A,NCA3485,NST1002,NST1001,NSI82XX,NSI8200,NSI1050
纳芯微提供产品整体解决方案应用于家用呼吸机、家用制氧机、额温枪、耳温枪和可穿戴体温监测设备等
纳芯微的接触式体温测量方案采用高精度数字温度传感器NST112x,具有温度响应速度快、测温时间短、低功耗、高精度、自发热小等特点,特别适合手表、手环类以及蓝牙体温贴等产品使用,兼容I2C和SMBus接口,具有可编程警报和SMBus置功能。
原厂动态 发布时间 : 2022-12-30
【应用】纳芯微低功耗数字温度传感器NST112x用于可穿戴类设备测温,可实现±0.5℃输出精度
可穿戴类设备测温应用经常会遇到一些挑战,对测温传感器提出了更高的要求。纳芯微提供接触式体温测量方案采用高精度数字温度传感器NST112x-CWLR。具有温度响应速度快、测温时间短、低功耗、高精度等特点,特别适合手表、手环类以及蓝牙体温贴等产品使用。
应用方案 发布时间 : 2022-09-28
芯片工程师的暖房Party是怎样的?纳芯微电子用“芯”点亮智慧生活
芯片工程师的暖房Party是怎样的?本文中讲从家庭电器产品角度出发,为大家介绍纳芯微电子旗下芯片产品对智慧生活的助力。其中包括隔离栅极驱动NS16601M & NSI68515、CAN接口NCA1042、RS485接口NIRS485等。 数字隔离器NSI82xx用于空调系统电路间高压域和低压域的电气隔离,保证系统元件和人身安全。
应用方案 发布时间 : 2024-03-01
NOVOSENSE Sensor Solutions for Portable Medical Devices Ensure the Health of Yourself and Your Family Members
NOVOSENSE sensor solutions can be used in home ventilators, home oxygen generators, forehead thermometer, ear thermometer and wearable temperature monitoring devices.
应用方案 发布时间 : 2023-06-27
【应用】基于接触式温度传感器的可穿戴设备体温监测方案,最高精度可达0.1℃,平均功耗0.7μA
面对行业的积极需求,纳芯微推出了一系列基于接触式温度传感器的体温监测应用解决方案。纳芯微D-NTC®系列温度传感器NST1001及NST175,提供从±0.1℃到±0.5℃的宽范围精度并拥有出色的低功耗特性,满足可穿戴设备延长电池寿命的需求。
应用方案 发布时间 : 2021-07-17
NST112 High-Accuracy, Low-Power Temperature Sensor with SMBus and I²C Interface Data sheet
型号- NST112,NST112A-CWLR,NST112B-CWLR,NST112D-CWLR,NST112X-CWLR,NST112-DSTR,NST112C-CWLR
电子商城
现货市场
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可定制温度范围-230℃~1150℃、精度可达±0.1°C;支持NTC传感器、PTC传感器、数字式温度传感器、热电堆温度传感器的额定量程和输出/外形尺寸/工作温度范围等参数定制。
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可定制烧结NdFeB磁铁的剩磁最高1.45T,易加工成各种尺寸。充磁方向:径向充磁、轴向充磁、辐射充磁等;镀层:Zn、Sn、Ni、电泳等,最高工作温度220℃。
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