Solder Policy

Many diodes and assemblies are solder dipped, either by default, or customer request. Below is a brief outline regarding VMI's solder-dipping policy. Please contact us if you have any questions.

Axial-leaded devices

All leads in axial-leaded diodes are 99.99% silver. This includes all diodes with part numbers starting with 1N, M, X, or Z. Sample part numbers include "1N6513", "M100UFG", "X50SG", and "ZR100SG". This does not apply to JAN/TX/V military QPL diodes.

• Default condition - No solder dip, unless requested.
• When requested, the default alloy is Sn96* unless otherwise specified.
• Devices shipped to Asian countries are automatically solder-dipped in Sn96. No request is needed.

QPL Diodes - JAN/TX/V military grade diodes

QPL diodes, including JAN/TX/V, are solder-dipped per the governing Source Control Document. Unless otherwise specified, the alloy is Sn60.

Copper tabbed diodes

Copper tabbed surface mount diodes are solder-dipped with Sn62 by default. Pb-free solder is not recommended due to flow, coverage, and cosmetic issues. These diodes are not RoHS compliant by design, but may be exempt if used in a medical, military, or space application.

Formed Lead Diodes

All formed-lead diodes are solder dipped in Sn60, by default. They are not RoHS compliant by design, but may be exempt if used in a medical, military, or space application. Pb-free solder is not recommended due to flow, coverage, and cosmetic issues.

Assemblies

All custom diodes and assemblies are solder-dipped per the customer specification

Custom Diodes and Assemblies

Assemblies such as standard rectifiers, single- and three-phase bridges are solder-dipped with Sn96.