Custom's Fabrication Capabilities include, but are not limited to;
Mica Paper and Film Capacitor Winding:
For the past 36 years, Custom has been winding the finest high voltage, high reliability capacitors in the world. We use manually operated, semi-automated, and fully automated machines to wind a wide variety of films including mica paper, Mylar® film, PTFE film. Our company has manufactured capacitors for an extremely wide variety of industries and governments. For more information, please contact our sales department or visit our directory for a complete listing of our International Sales Representatives.
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Clean Room Operations
As defined by ANSI J-STD-001B, almost all of Custom's high voltage capacitors, assemblies, and modules are categorized as Class 3 products (High Performance Electronic Products). We use clean room operations and processes to manufacture specific high voltage polymeric film capacitors and a variety of manual and semi-automated electronic assembly processes that include, but are not limited to, joining (soldering), packaging (conformal coating, encapsulation, etc.), and testing. We adhere to U. S. and international standards and specifications (FED-STD-209) used to classify our clean room operations. If you have questions about this type of advanced manufacturing process, please contact our sales department or visit our directory for a complete listing of our International Sales Representatives.
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Arc Spraying:
Custom employs two types of thermal spraying: arc spraying and subsonic flame spraying. Both processes are used to apply a metallic coating on the exposed edges of the aluminum foil in our extended foil capacitor windings. Arc spraying is typically used to coat the ends of our low inductance mica paper capacitors. In this process, two continuously fed wires are melted by an electric arc operating between them. The molten metal is atomized and propelled onto the ends of the capacitor windings by compressed air. The sprayed ends are ground to the required dimension and leads are subsequently soldered to the sprayed surface. Our thermal spray systems and associated dust collection systems have recently been modernized and represent state-of-the-art thermal spray technology. If you have an application that you think would lend itself to arc spraying, please contact our sales department to discuss the options. Also, please visit our directory for a complete listing of our International Sales Representatives.
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Subsonic Flame Spraying:
Subsonic flame spraying is typically used to coat the ends of our PTFE film capacitors. In this process, the metallic spray material is fed into and melted by an oxyfuel gas flame. The molten particles are propelled onto the ends of the capacitor windings by the force of compressed air. Leads are subsequently soldered to this surface. Our thermal spray systems and associated dust collection systems have recently been modernized and represent the state-of-the-art in thermal spray technology. If you have an application that you think would lend itself to subsonic flame spraying, please contact our sales department or visit our directory for a complete listing of our International Sales Representatives.
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Vacuum Pressure Impregnation (VPI):
Custom uses VPI extensively to impregnate its reconstituted mica paper capacitors. This process utilizes advanced equipment and is strictly controlled by experienced operators. The VPI process can be used to impregnate mica paper capacitors with unfilled epoxy resins, polyester resins, or silicone resins. This process thoroughly saturates the various layers of mica paper that are used to fabricate the capacitor windings. Incoming inspection of the impregnating materials, skilled operators, in-process inspection, and electrical testing of the finished capacitors ensure that you receive the highly reliable capacitors and/or modules you have purchased. To discuss Custom's VPI process, please contact our sales department or visit our directory for a complete listing of our International Sales Representatives.
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Abrasive Blasting / Tumbling:
Custom continually uses abrasive blasting and tumbling processes to clean excess epoxy resins from capacitor sections and mold release agents from embedded epoxy units. Our abrasive blasting and tumbling systems have recently been upgraded and include state-of-the-art dust collection systems and pressure regulators. If you have an application that you think would lend itself to our abrasive blasting or tumbling processes, please contact our sales department or visit our directory for a complete listing of our International Sales Representatives.
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Thermocompression Bonding:
Custom uses this process extensively to produce laminar film capacitors and lead assemblies for E.F.I. capacitors. Adhesive-backed films like Mylar® film and Kapton film, for example, are bonded to plated leads to form these items. A variety of shapes and sizes can be produced with this process. To discuss your Thermocompression Bonding issues, please contact our sales department or visit our directory for a complete listing of our International Sales Representatives.
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Subcontracting:
- Plating: Custom uses "top quality" plating vendors who are accustomed to working with complex specifications.
- Machining: Custom works with a local machine shop known worldwide for its incredible accuracy and efficiency. All of our molds are produced with the latest in CNC technology, including High Speed Machining. We require that this shop and the others that produce terminals, plates and other components meet our strict quality requirements.
- Brazing: Custom can perform small-scale Torch Brazing (TB) operations. We also work with local brazing shops that can perform large-scale Furnace Brazing (FB) and Induction Brazing (IB) operations.
- Welding: Custom employs the services of several local welding vendors who are extremely competent and qualified to handle any welding needs.
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