Board Fit and Contact Rating
The 5-146257-6: This is a 12-position, dual-row breakaway header from the AMPMODU Mod II series. The tin-plated post (100 µinch) is the solder-joint side, where tin wets to the PCB pad.

TE Connectivity AMP Connectors AMPMODU Mod II, Header, Breakaway, 12 Positions, 0.100" (2.54mm) Pitch, Through Hole, Gold Mating Finish, 3A, Black LCP Housing, UL94 V-0
| 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 | 2 |
| Pitch | 0.100\" (2.54mm) |
| Positions | 12 |
| Row spacing - mating | 0.100\" (2.54mm) |
| Contact finish - post | Tin |
| Contact length - post | 0.120\" (3.05mm) |
| Overall contact length | 0.440\" (11.18mm) |
| 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 5-146257-6: This is a 12-position, dual-row breakaway header from the AMPMODU Mod II series. The tin-plated post (100 µinch) is the solder-joint side, where tin wets to the PCB pad.
It is a dual-row, 12-position header with all positions loaded. The unshrouded design allows mating with any 0.025" square-post receptacle.
Within the same series, the main alternative is a different position count or plating option. For a 12-position, dual-row, gold-plated header, this exact order code is the one specified. TE's base number 146257 covers multiple breakaway variants; verify the position count and contact finish against the BOM before substituting.