吃瓜tv 路 ENGINEERING GUIDEWhat Is Eutectic Solder? Phase Behavior and Assembly MeaningEutectic solder has a composition that undergoes a eutectic phase transformation at a particular temperature in the relevant alloy system. In the familiar tin鈥搇ead system, Sn63Pb37 is commonly listed with a melting temperature of…
Read articleIn the ever-evolving world of electronics manufacturing, efficiency and reliability are paramount. One technology that has gained significant traction in recent years is Pin-in-Paste (PIP), also known as Through-Hole Reflow (THR) or Intrusive Reflow Soldering (IRS). This innovative approach combines the strengths of through-hole technology with the efficiency of surface mount assembly processes. In this […]
Read article吃瓜tv 路 ENGINEERING GUIDEPCB Interconnect Stress Testing: Coupons and Resistance TrendsPCB interconnect stress testing evaluates how a specified interconnection structure responds to controlled thermal cycling. In the DC current induced method described by IPC-TM-650 2.6.26, a designed coupon is heated electrically and its resistance is…
Read article吃瓜tv 路 ENGINEERING GUIDEBed-of-Nails PCB Testing: Bare Boards, Access and EconomicsBed-of-nails PCB testing uses an array of contacts to connect a board to a test system. The fixture supplies access; the instrument and program determine what is tested. Bare-board continuity and isolation testing must be…
Read article吃瓜tv 路 ENGINEERING GUIDESolder Beading: Locate the Particle and Trace Its OriginSolder beading describes unwanted solder accumulations beside or beneath components, often near the sides of chip resistors or capacitors after reflow. The term overlaps with solder balling, so define the observed location and morphology…
Read articlePCB Manufacturing / PCB Materials吃瓜tv 路 ENGINEERING REFERENCEPCB CTE: direction and temperature change the answerCalculate a simple piecewise free-expansion example, read pre-Tg and post-Tg data correctly, and identify the additional evidence needed for PCB reliability.Discuss your requirementsOpen the worksheetOriginal engineering guidance 路 References checked September…
Read articlePCB Manufacturing / RF PCB / Flexible Pcb吃瓜tv 路 RF materials & manufacturingWaterproof flexible heater substrate: Material & Design DecisionsSpecify the ARLON silicone/PTFE barrier construction and validate the complete sealed heater. Use the explanations, source documents and interactive calculations to make the next engineering decision…
Read articleRadio Frequency (RF) technology is a fundamental component of modern wireless communication systems. From cellular networks to Wi-Fi and Bluetooth, RF plays a crucial role in our interconnected world. One concept that has gained significant attention in recent years is the RF pool. This article will delve deep into the world of RF pools, exploring […]
Read articleIn the rapidly evolving world of electronics manufacturing, printed circuit board (PCB) assembly plays a crucial role in creating the devices we use every day. As technology advances and products become more complex, the importance of efficient and accurate PCB assembly processes grows exponentially. One of the key factors in achieving high-quality, cost-effective PCB production […]
Read article吃瓜tv 路 ENGINEERING GUIDEPCB Track Width and Gap Tolerances: Etch Geometry and Design MarginPCB track width and isolation gap tolerances describe the difference between intended copper geometry and the allowed finished result. Imaging, copper thickness, pattern density and etching all influence the outcome. A nominal…
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