SMF and SXF high voltage diodes are constructed using a hermetically-sealed diode over-molded with a rigid epoxy.
The advantages of using a diode such as this is that they are easy to pick-and-place, and are cost effective. They pack a lot of high voltage iN a small footprint.
Many diodes can be overmolded. Some of the more popular devices include -
SMD Part Number
High Temp Diodes
High Speed Diodes
|SMF and SXF High Voltage Diode Package|
Hi-rel processing similar to JANTX type testing can be done, but there are differences. Due to device construction, environemntal testing such as power burn-in and High Temperature Reverse Bias (HTRB) testing is done prior to encapsulation. The diode is hermetically sealed at that point, but has not been over molded. Once the diode is overmolded it can be electrically tested - Final Electrical, for example - but no further environmental processing is done.
A second difference is that a custom number is assigned to the device to differentiate it from standard products.
Don't hestitate to contact us for your diode processing needs. VMI offers a range of diode testing services, and we're more than happy to take a look at your requirements.