V is h ay I n t e rt e c h n o l o g y, I n c . Capacitors - Radial Aluminum, Special Lead Forms AND TEC I INNOVAT O L OGY Special Leadforming Capabilities N HN VISHAY BCcomponents O 19 62-2012 Industry-Focused Solutions with Aluminum Capacitors INTRODUCTION In today’s electronics manufacturing, there is a clear trend towards supplying components ready for use in assembly lines. Below, we provide a number of examples of how Vishay addresses this trend with added-value lead frame modifications for its aluminum capacitor products. Keyed Polarity Because of their size, leaded aluminum capacitors frequently are placed manually on printed circuit boards. Since these “alu-caps” are polarized components, it is essential that they be designed in such a way as to prevent inverse polarity. A foolproof design solution has been developed: Provide different hole diameters for the plus and minus terminals in the circuit board, and fold the component wire for the larger hole by 180°, thereby doubling the diameter of that wire (the “J-lead”). This simple configuration prevents inverse polarity, since the folded wire will not fit into the smaller hole. Resources • For technical questions contact [email protected] • Sales Contacts: http://www.vishay.com/doc?99914 RoHS AUTOMOTIVE GRADE COMPLIANT e3 One of the World’s Largest Manufacturers of Discrete Semiconductors and Passive Components CAPABILITIES 1/2 VMN-PL0004-1204 This document is subject to change without notice. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 V is h ay I n t e rt e c h n o l o g y, I n c . Special Lead Forms 19 62-2012 D If an upright-placed radial component is too high on the board, it can be placed horizontally. This requires bent leads for proper placement (“L-form”). L Often, aluminum capacitors, being rather bulky components, are no longer placed on printed circuit boards using traditional methods, but instead are fitted, clamped, or glued onto a lead frame, mounting array, housing, or the like, with the leads welded to the connecting material. These mounting configurations require pre-formed leads that are adapted to specific mechanical conditions. All these special lead forms are now available from Vishay Intertechnology. In our F manufacturing process, the devices are fully tested both before and w after an automatic lead bending/forming operation. To facilitate pickand-place operations (manual or automatic placement), the products are supplied in trays and polarity-aligned upon request. In addition, this kind of packing is a useful protection against mechanical shock during transport and handling. a Capacitors - Radial Aluminum, Special Lead Forms Special Leadforming Capabilities AND TEC O L OGY INNOVAT I VISHAY BCcomponents N HN O d + To help minimize their environment impact, Vishay invites its customers to ship back empty trays so they can be reused. Benefit Added-value mechanical configurations help customers to lower their costs by skipping production steps. No investment in lead-bending machines is needed. Problem Solution Keyed polarity needed One lead bent backwards 180° or V-shaped Horizontal placement of radial capacitors Leads bent by 90° Assembly of capacitors on lead frames (welding) Capacitors have to be adapted for special housings Products Leads bent to customer’s configuration (e.g., shaped like T, Z, or L) Depending on assembly processes, the packaging can be adapted to special needs. Examples include: • Bulk packaging: most cost-effective for manual insertion • In trays: polarity-aligned for easier positioning of the capacitors, or automated pick-and-place processes Quality assurance in accordance with ISO/TS16949:2009. CAPABILITIES 2/2 VMN-PL0004-1204 This document is subject to change without notice. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000