VMI offers the most complete range of high voltage diodes in the world. VMI's SMF, SXF and SXFL series of high voltage surface mount diodes, both molded and formed, offer several advantages over axial-leaded devices. These diodes feature surface mount terminations and uniform, precise dimensions. The results are a high voltage diode that is easily pick-and-placed.

Figure 1: VMI offers the most complete range of high voltage diodes in the world. source: VMI

VMI’s surface mount diodes are specially designed for use with automatic insertion equipment with increased creepage distance between the anode and cathode. Starting with VMI's standard glass-body, hermetically sealed diodes, these devices are over-molded in a rigid epoxy. The leads are then trimmed and formed. The range of VMI’s surface mount diodes are 2 kV, 3 kV, 5 kV and 15 kV, 100 nS, 70 nS, 50 nS, 30 nS and high temperature, 200° C, 2 kV, 3 kV and 5 kV.

The company’s latest surface mount design is the SXFL6527, which is designed with 99.99% silver leads and offers 10 kV in a surface mount option to VMI’s axial-lead 1N6527.

Like their other molded form lead diodes, the SXFL6527 includes VMI’s film-assisted molding and laser marking. Film-assisted molding improves reliability and manufacturability of parts and the addition of the laser marking includes a 2D barcode providing lot traceability for each diode produced.

Figure 2: The SXFL6527 includes VMI’s film-assisted molding and laser marking. Source: VMI

Film-assisted-molding (FAM) is a more advanced method of device encapsulation compared to conventional transfer molding in that it:

• Increases manufacturing capacity
• Improves device encapsulation, reducing variables that contribute to compound-filling defects
• Improves statistical process control-related data collection

VMI laser marking (labeling) adds great benefits and device quality that significantly outweigh traditional ink marking. Benefits and quality include:

• Increased manufacturing capacity
• Improved marking permanency, legibility and reproducibility compared to ink marking

The addition of a 2D barcode to each individual molded device allows for new lot number traceability that provides process history and characteristics such as date codes, manufacturing dates and lot numbers of raw materials used.

Click here for specs and data on the SXFL6527 and VMI surface mount diodes.

VMI is ISO9001:2015 certified and all of their products are made and 100% tested at their facility in Visalia, California,

Special test requirements? Ask VMI’s technical team about options available for additional environmental testing by emailing Sales@voltagemultipliers.com or calling (559) 651-1402.

About VMI

VMI is a world leader in the design and production of high voltage diodes, multipliers and power supplies. Their products are designed, manufactured and tested for superior performance in the U.S.

During the last four decades, VMI has developed an extensive line of high voltage diodes and optocouplers, with a growing product line of custom high voltage power supplies that are being utilized in various applications worldwide.

VMI’s products are custom designed for industrial, medical, military, aerospace and other high-reliability applications operating at the leading edge of technology.

Committed to quality and service, VMI is here to assist customers throughout the production process, from design development to production manufacturing. They offer extensive testing, design verification, production support and custom design services.

To learn more about VMI and their products, visit their website.