Pitch and current rating set the board footprint
The 5-146285-8: At 3 A per contact, the temperature rise stays within the LCP housing limit at 25°C ambient; derate above that per the product drawing.

TE Connectivity AMPMODU Mod II unshrouded breakaway header, 5-146285-8, 8 positions single row, 0.100" (2.54mm) pitch, through-hole solder termination, male square pins, gold mating finish, 3 A rating, UL94 V-0 LCP housing.
| Parameter | Value |
|---|---|
| Series | AMPMODU Mod II |
| Type | Male Pin |
| Mounting | Through Hole |
| Connector type | Header, Breakaway |
| Fastening type | Push-Pull |
| Current rating | 3A |
| Operating temperature | -65°C ~ 105°C |
| Contact material | Copper Alloy |
| Insulation color | Black |
| Insulation height | 0.090\" (2.29mm) |
| Insulation material | Liquid Crystal Polymer (LCP) |
| Material flammability rating | UL94 V-0 |
| Parameter | Value |
|---|---|
| Style | Board to Board or Cable |
| Package | Bulk |
| Shrouding | Unshrouded |
| Termination | Solder |
| Contact shape | Square |
| Rows | 1 |
| Pitch | 0.100\" (2.54mm) |
| Positions | 8 |
| Contact finish - post | Tin |
| Contact length - post | 0.090\" (2.29mm) |
| Overall contact length | 0.410\" (10.41mm) |
| Contact finish - mating | Gold |
| Contact length - mating | 0.230\" (5.84mm) |
| Contact finish thickness - post | 100.0µin (2.54µm) |
| Contact finish thickness - mating | 30.0µin (0.76µm) |
The 5-146285-8: At 3 A per contact, the temperature rise stays within the LCP housing limit at 25°C ambient; derate above that per the product drawing.
Unshrouded — the pins are exposed with no plastic shroud.
0.100" (2.54mm) pitch, single row, 8 positions.
Any AMPMODU Mod II or BergStik II unshrouded header with 8 positions, 0.100" pitch, and the same post length is a direct functional replacement. Confirm the contact finish (gold vs tin) and overall contact length for your application.