What is the housing part number for STI-51T-250N?

A housing for this terminal is not supplied by JST. It is left to the decision of the end user to use a housing with this terminal.

What does the "F" indicate on the PAD series headers?

Example part numbers:

B10B-PADSS (LF)(SN)
B10B-PADSS-1 (LF)(SN)

Compared to...

B10B-PADSS-F (LF)(SN)
B10B-PADSS-1F (LF)(SN)

The difference is the raw material resin used. Without the "F", it is the normal glass-filled PBT. With the "F", it is PA66.

Please email tac@jst.com if you require further information.