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Author Archives: WorkingBear
Jan07
For Beginners: What Is a BOM? How BOM Works with ECO, ECN, and ECR in Electronics Manufacturing
For many people who are new to the electronics manufacturing and assembly industry, BOM and ECO are two very important terms—but also two of the most confusing ones. In this article, I’ll try to explain these concepts in a simple … Continue reading
Dec31
Understanding TAL (Time Above Liquidus) and Why It Matters in PCB Assembly
TAL (Time Above Liquidus) refers to the amount of time during the SMT reflow process when the solder material (such as solder paste) is above its liquidus temperature. You can think of it like ice melting into water and then … Continue reading
Dec24
Why Does Second-Source Qualification Always Fall into a Vicious Cycle?
“Second-source” qualification usually means that a component has at least two qualified suppliers. The reasons for introducing a second source are straightforward: to deal with material shortages, handle EOL (End of Life) parts, reduce material costs, increase price negotiation leverage, … Continue reading
Dec18
Why Second Sourcing Matters: Real Challenges and Practical Solutions in Electronics Supply Chains
In electronics manufacturing and supply chain management, a “second source” (2nd source) means having an alternative supplier for critical components or materials. The goal is to spread risk and improve overall operations. It’s not just a safety net against supply … Continue reading
Dec10
What is the Electronic Components Spot Market (Buy and Sell)?
The spot market for electronic components is similar to a flea market or second-hand marketplace. The difference is that a flea market mainly sells used items, while the spot market for electronic parts—like MCUs, ICs, MLCCs, capacitors, resistors, indoctors, MOSFETs, … Continue reading
