- Semi Fab
Imagine a world where there are chips in about everything we touch on a daily basis. These sophisticated chips are hidden from sight, but their functions are vitally significant to our daily lives.
Hundreds of processes are required to produce a semiconductor wafer. Many different types of machines are required during fabrication, each with a different power requirement. Some need very little power, such as the tracking of transfer systems that move wafers from one location to another. Other processes demand substantial power, especially during high volume testing.
Semiconductor fabrication equipment has to operate flawlessly 24 hours a day for maximum production yields.
This requires careful consideration of your requirements to provide you Clean and Stable Power. Often, the most appropriate power solution to meet these complex power needs is a proven standard product embedded in a TDK-Lambda Value Add Solution.
UL508 is the safety standard for industrial control equipment rated 1500V or less. Power supplies are thermally tested to ensure they will operate safely in enclosed cabinets or as stand-alones. Terminations to the products have to be designed to be field wired, often with bare wire connections.
Our supplies with 508 certification are UL "listed" rather than "recognized". This allows the product to be used as a stand-alone device without the need to be fitted into an enclosure. In addition to our extensive DIN rail mount power supplies, many of our metal cased industrial products are UL 508 certified.
Peak current demands from the power supply exist during start-up and during processes. These peaks can usually be attributed to solenoid relays, pumps and motor controllers. Costly mistakes in power supply selection can be made by not taking into account the peak current demands. Repetitive peak loading on a power supply that is not designed for the task can lead to early failures.
Selecting a power supply capable of continuous power at the peak load may may result in a greater cost and larger product size.
We offer products that support peak current demands and are capable of doing so reliably.
Sequential start up may be a requirement for automated systems. In most cases, the user requires logic/control circuits to be powered first before subsequent circuits driving a motor, laser or other devices.
We offer multiple-output products with individual output enable, inhibit, and DC good signaling that supports safe and reliable sequencing during start up.
440 vs. 208VAC Input
High power applications require three-phase Delta or Wye configurations at voltages of 400, 440 and 480VAC. Typically, a large and expensive step-down transformer is used to provide a lower input line voltage (208/240VAC) to a traditional power supply.
We offers products that operate on 3-phase, higher voltage inputs, reducing cost by eliminating the need for a step-down transformer.
SEMI F47 Line Dips
SEMI F47 is the standard used by the semiconductor fabrication industry. It dictates the performance of a power supply during AC line outages caused by lightning. This avoids equipment shutting down during time-critical wafer fabrication resulting in the loss of work in progress.
The vast majority of our products are designed to perform continuously during these AC line dips and disruptions.