The VX7815-1000R from CUI Inc. is a non-isolated point-of-load DC-DC converter module with 1 output rated 15 V and -15 V, at 1 A and 300 mA, with an 8 V to 36 V input.
The VX7815-500 from CUI Inc. is a board-mount DC-DC converter with a single 15 V, 500 mA output and a 19 to 36 V input, offered as a linear regulator replacement, rated 7.5 W.
The VX7815-500-W from CUI Inc. is a linear regulator replacement DC-DC converter with 2 outputs at 15 V and -15 V, rated 500 mA and 150 mA, with a 36 V input.
The VX7815-1000 from CUI Inc. is a linear-regulator replacement DC-DC converter board-mount module with 1 output at 15 V and 1 A, accepting a 20 V to 36 V input.