In modern electronics manufacturing, the miniaturization and complexity of components demand unparalleled precision. Among the most delicate components are Moisture-Sensitive Devices (MSDs), such as BGAs, QFNs, PLCCs, and some tantalum capacitors. Improper handling of these components can result in catastrophic failures, invisible defects, or even total board malfunction. At HighPCB, we follow industry-leading practices to ensure MSDs are always handled, stored, and assembled with the utmost care, preserving the integrity of every product we deliver.
What Are Moisture-Sensitive Devices (MSDs)?
Moisture-Sensitive Devices are electronic components encapsulated in plastic or resin that can absorb moisture from the environment. When these components are exposed to heat during soldering (especially reflow), the absorbed moisture can expand rapidly, causing internal delamination, “popcorning,” or microcracks. These issues often remain undetected until the product is deployed in the field — leading to costly recalls and failures.
Common MSDs include:
- Ball Grid Arrays (BGAs)
- Quad Flat No-leads (QFNs)
- Plastic Leaded Chip Carriers (PLCCs)
- Certain ceramic/tantalum capacitors
- Microcontrollers and ASICs with plastic packaging
Why Improper Handling of MSDs Is a Major Risk
If not handled correctly, MSDs may fail during soldering or after the product is deployed. Moisture inside the component turns into steam during reflow, which causes rapid internal pressure. This may lead to:
- Cracked packages
- Open or intermittent connections
- Latent defects that are extremely hard to diagnose
- Significant increase in RMA (Return Merchandise Authorization) cases
Improper handling is most common in facilities that skip important steps like dry storage, baking, or real-time humidity monitoring. That’s where HighPCB makes a difference.
HighPCB’s Proven Workflow for MSD Handling
At HighPCB, we treat MSD management as a critical quality control procedure, not just an optional safeguard. Here’s how we ensure your sensitive components are fully protected:
Dry Storage in Humidity-Controlled Cabinets
All incoming MSDs are immediately stored in desiccant dry cabinets or vacuum-sealed moisture barrier bags with appropriate humidity indicators. This ensures components remain within the safe humidity exposure level (Moisture Sensitivity Level – MSL) until they are used.
Strict Adherence to JEDEC Standards
We follow JEDEC J-STD-033 guidelines for handling, packing, and baking MSDs. Whether the component is MSL 2 or MSL 6, our team ensures precise handling procedures are followed based on the device’s classification.
Automated Bake Timing and Tracking
If any component exceeds its floor life, we perform controlled baking at prescribed temperatures and durations before use. Our ERP system logs exposure times and baking schedules automatically — minimizing human error.
Real-Time Monitoring
HighPCB uses humidity sensors and data logging in all storage and assembly areas. Any deviation from safe humidity thresholds triggers automatic alerts, ensuring real-time corrective actions.
Safe Handling During Pick-and-Place Assembly
During automated SMD assembly, pick-and-place systems are calibrated to handle sensitive components with minimal stress. Anti-static and moisture-barrier trays are used during transfer to prevent static and environmental exposure.
Custom MSD Protocol for Client-Supplied Components
For customer-supplied parts, HighPCB provides custom handling protocols upon request — including special labeling, double-layer moisture barrier bagging, and third-party bake certification if needed.
The Role of Baking in Preventing Failures
Baking is a critical step in MSD preparation. When components exceed their safe exposure time (floor life), they must be baked to remove absorbed moisture before reflow soldering. At HighPCB, we use precision-controlled ovens and follow component-specific bake schedules to ensure no component enters the reflow oven with trapped moisture.
Skipping baking, as some low-cost manufacturers do, can lead to:
- Component swelling or cracking
- Electrical shorts
- Unstable long-term reliability
Our strict baking protocols guarantee consistent results and high product longevity.
Benefits of Choosing a Manufacturer That Understands MSD Handling
Partnering with a manufacturer like HighPCB that specializes in moisture-sensitive device handling delivers the following advantages:
✅ Increased product reliability
✅ Lower risk of field failure
✅ Higher manufacturing yield
✅ Reduced rework and warranty claims
✅ Long-term performance in harsh environments
Conclusion: HighPCB Goes the Extra Mile for Your Success
At HighPCB, we believe in proactive quality management — not just damage control. Our investment in MSD handling protocols, high-precision equipment, and real-time tracking means your products are assembled with the care and expertise they deserve.
Whether you’re designing for automotive, medical, or industrial applications, we know how critical reliability is. With HighPCB as your assembly partner, you can trust that every MSD will be treated with precision — ensuring your end product performs flawlessly from day one.
📩 Want to learn more about our capabilities or request a quote? Visit www.highpcb.com or contact us today.
