Web Analytics Made Easy - Statcounter
Understanding PCB MSL Levels | POE
This website uses cookies:
Our website use cookies to analyze website accesses and improve your online experience. By continuing browsing this website,you agree to our use of cookies and privacy policy.
Accept all cookies
Decline
This website uses cookies:
Our website use cookies to analyze website accesses and improve your online experience. By continuing browsing this website,you agree to our use of cookies and privacy policy.
Accept all cookies
Decline
Contact Us
Get A Quote
all@poe-pcba.com
Contact Us
Get A Quote
USD
EUR
GBP
CAD
AUD
CHF
HKD
JPY
RUB
BRL
CLP
NOK
DKK
SEK
KRW
ILS
MXN
CNY
SAR
SGD
NZD
ARS
INR
COP
AED
Home
About
About Us
Magazine
Exhibition
Video
FAQ
News
NDA
Terms and Conditions
Portfolio
PCB
PCBA
Industries
Aerospace
Internet of Things(IOT)
Charging Pile
Automobile
Automation Interconnected Electrification Intelligent Technology
Cloud
Compute and Storage Networking
Industry & Instrumentation
Telecommunications
5G and Wireless IP and Optical Networks
Consumer Electronics
Lifestyle
Smart Home appliances Audio Floor care
Medical Healthcare
Medical Devices Consumer Healthcare Ventilator Diagnostic Electronics
Smart Living
Smart LED Lighting
Industrial Automation
Capital Electronics Robot Industrial Electronics Clean Energy Power Supply
Printing
What We Do
PCB
PCB Manufacturing PCB Prototype PCB Testing PCB Design PCB Engineering Service HDI PCB Manufacturing Services PCB Material Impedance Controlled PCB POE FAQ PCB
PCBA
PCB Assembly Service PCB Assembly Prototype BGA PCB Assembly Turn Key PCB Assembly Low Volume PCB Assembly PCBA Testing Cable Assembly Component Sourcing IC Programming Conformal coating Box Building Assembly Kitting Carton Box & Foam Service Tooling & SMT Stencil 3D Print Enclosure Logistics PCBA
Factory
PCB Factory PCBA Factory
Capabilities
PCB Capabilities PCBA Capabilities
Solutions
EMS For Startup JDM New product introduction Smart Supply Chain
Quality
Blog
Contact Us
POE MANUFACTURING
YOUR GLOBAL TECHNOLOGY
PARTNER
Home
About
About Us
Magazine
Exhibition
Video
FAQ
News
NDA
Terms and Conditions
Portfolio
PCB
Aluminum PCB Double Layer PCB Multilayer PCB Rigid PCB HDI PCB High-Frequency PCB Flexible PCB Rigid-flex PCB
PCBA
Medical Equipment Telecommunication Consumer PCB Industrial Automation Hi-Tech Agricultural New Energy Automobile Green Solar Panels Robot RF&Wireless Power Control Security Uav&Drone 5G IOT Other PCBA
Industries
Aerospace
Internet of Things(IOT)
Charging Pile
Cloud
Compute and Storage Networking
Industry & Instrumentation
Telecommunications
5G and Wireless IP and Optical Networks
Consumer Electronics
Lifestyle
Smart Home appliances Audio Floor care
Medical Healthcare
Medical Devices Consumer Healthcare Ventilator Diagnostic Electronics
Printing
What We Do
PCB
PCB Manufacturing PCB Prototype PCB Testing PCB Design PCB Engineering Service HDI PCB Manufacturing Services PCB Material Impedance Controlled PCB PCB
PCBA
PCB Assembly Service PCB Assembly Prototype BGA PCB Assembly Turn Key PCB Assembly Low Volume PCB Assembly PCBA Testing Cable Assembly Component Sourcing IC Programming Conformal coating Box Building Assembly Kitting Carton Box & Foam Service Tooling & SMT Stencil 3D Print Enclosure Logistics PCBA
Factory
PCB Factory PCBA Factory
Capabilities
PCB Capabilities PCBA Capabilities
Solutions
EMS For Startup JDM New product introduction Smart Supply Chain
Quality
Blog
Home >Blog >PCB/ PCBA Blog > Understanding PCB MSL Levels
Understanding PCB MSL Levels
20 January 2025
Views: 2170
In PCB manufacturing, the moisture sensitivity level of components is a key indicator of whether the PCB can be durable. We will explain its levels and why it is a key indicator with the theme of pcb msl levels.

What is MSL?

Moisture Sensitivity Level (MSL) represents the sensitivity of semiconductor components to moisture during storage and use. The higher the MSL value, the more sensitive the component is to moisture. According to the IPC/JEDEC standard J-STD-020, components are divided into different moisture sensitivity levels, which determine the treatment of components before mounting and reflow soldering.

Importance of PCB MSL

Exposure to moisture can cause IC packaging to fail, such as expansion during reflow soldering, leading to component failure. Correct understanding of pcb msl levels can prevent component damage, enhance quality control and ensure product compliance.

List of PCB MSL levels

MSL levels range from 1 to 6, where level 1 represents the lowest sensitivity to moisture and level 6 represents the highest. Here is a detailed classification of each level:

Levels Storage Conditions Floor Life Handling Drying
MSL 1 ≤ 30°C/85% RH Indefinite No special controls needed Pre-bagging: Optional
Desiccant: Optional
Label: If >235°C
MSL 2 ≤ 30°C/60% RH 1 year Requires dry pack Pre-bagging: Optional
Desiccant: Required
Label: Required
MSL 2a ≤ 30°C/60% RH 4 weeks Requires dry pack Pre-bagging: Required
Desiccant: Required
Label: Required
MSL 3 ≤ 30°C/60% RH 168 hours Requires dry pack
MSL 4 ≤ 30°C/60% RH 72 hours Requires dry pack
MSL 5 ≤ 30°C/60% RH 48 hours Requires dry pack
MSL 5a ≤ 30°C/60% RH 24 hours Requires dry pack
MSL 6 ≤ 30°C/60% RH 72 hours, Must be baked Requires dry pack and baking Pre-bagging: Optional
Desiccant: Optional
Label: Required
Share This Story, Choose Your Platform!
Application of related products
Tel: +8613798543496
E-mail: all@poe-pcba.com
Skype:poepcba
Whatsapp: 85292069596
Linkedin: POE PCBA
Files (zip or rar files accepted. Max 8MB.)
Link Us on
Products
Rigid PCB
Medical Equipment
Industrial Automation
Robot
RF&Wireless
Uav&Drone
Other PCBA
Flexible PCB
Multilayer PCB
HDI PCB
Aluminum PCB
Double Layer PCB
About Us
About Us
Magazine
Exhibition
Video
FAQ
News
Contact Us
About Us

Since 1996, POE has become a globally renowned PCB company, providing small to medium volume PCB/ PCBA manufacturing services.

Link Us on
Delivery Services
Verified by
Payment Methods
Copyright ©1996-2026 Wanfeng Circuit (HK) Co.,ltd All Rights Reserved.