35-circuit unshrouded header, 0.100" pitch
The 77311-127-35LF is the 35-circuit member of Amphenol ICC (FCI)'s BERGSTIK® unshrouded header line, a single-row through-hole board-to-board interconnect.

Amphenol ICC (FCI) BERGSTIK® header, order code 77311-127-35LF, 35 positions, single row, 0.100" (2.54mm) pitch, 3A per contact, gold or GXT™ mating finish, through-hole, solder termination, unshrouded.
| Parameter | Value |
|---|---|
| Series | BERGSTIK® |
| Type | Male Pin |
| Mounting | Through Hole |
| Connector type | Header |
| Fastening type | Push-Pull |
| Current rating | 3A per Contact |
| Operating temperature | -65°C~125°C |
| Contact material | Phosphor Bronze |
| Insulation color | Black |
| Insulation height | 0.100\" (2.54mm) |
| Insulation material | Thermoplastic |
| Material flammability rating | UL94 V-0 |
| Parameter | Value |
|---|---|
| Style | Board to Board |
| Package | Bag |
| Shrouding | Unshrouded |
| Termination | Solder |
| Contact shape | Square |
| Rows | 1 |
| Pitch | 0.100\" (2.54mm) |
| Positions | 35 |
| Contact finish - post | Tin |
| Contact length - post | 0.105\" (2.67mm) |
| Overall contact length | 0.465\" (11.81mm) |
| Contact finish - mating | Gold or Gold, GXT™ |
| Contact length - mating | 0.260\" (6.60mm) |
| Contact finish thickness - post | 78.7µin (2.00µm) |
| Contact finish thickness - mating | 30.0µin (0.76µm) |
The 77311-127-35LF is the 35-circuit member of Amphenol ICC (FCI)'s BERGSTIK® unshrouded header line, a single-row through-hole board-to-board interconnect.
Gold or Gold GXT on the mating face at 30.0 µin (0.76 µm) and tin on the solder post at 78.7 µin (2.00 µm) — the higher tin thickness on the post is the correct grade for solder-side durability.
No — the header uses push-pull friction fastening with no positive locking mechanism. If vibration resistance or repeated mating is a factor, confirm that the mating receptacle provides sufficient retention or consider a latching alternative.