Molex KK254 header, breakaway, order code 0022288204, 20 positions, single row, 0.100" (2.54 mm) pitch, gold-plated mating contacts, through-hole right-angle, solder termination, unshrouded, UL94 V-0.

Molex KK254 header, breakaway, order code 0022288204, 20 positions, single row, 0.100" (2.54 mm) pitch, gold-plated mating contacts, through-hole right-angle, solder termination, unshrouded, UL94 V-0.
- New & original stockTraceable channels only — no mixed lots, no re-taped reels.
- Factory packaging where availableSealed reels, trays and bags; cut quantities always stated on the quote.
- Photo-verified countsEvery line counted and photographed before the box closes.
- PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.
Specifications
| Parameter | Value |
|---|---|
| Series | KK254, 42377 |
| Gender | Male Pin |
| Mounting type | Through Hole, Right Angle |
| Connector type | Header, Breakaway |
| Fastening type | Push-Pull |
| Insulation color | Black |
| Insulation height | 0.098\" (2.50mm) |
| Insulation material | Polyamide (PA), Nylon, Glass Filled |
| Material flammability rating | UL94 V-0 |
| Style | Board to Board or Cable |
| Package | Bulk |
| Shrouding | Unshrouded |
| Termination | Solder |
| Applications | Automotive, General Purpose, Medical, Telecommunications |
| Contact shape | Square |
| Rows | 1 |
| Pitch | 0.100\" (2.54mm) |
| Positions | 20 |
| Contact finish - post | Tin |
| Contact length - post | 0.120\" (3.05mm) |
| Contact finish - mating | Gold |
| Contact length - mating | 0.244\" (6.20mm) |
| Contact finish thickness - post | 100.0µin (2.54µm) |
| Contact finish thickness - mating | 30.0µin (0.76µm) |
Product details
Frequently asked questions
What does the split plating mean for the application?
Gold on the mating face (30 µin) handles repeated plug cycles and maintains low contact resistance at engagement; tin on the solder tail (100 µin) gives a solder-wettable surface that tolerates wave or hand soldering without gold scavenging.
What is the mating half for this header?
The 0022288204 mates with the matching KK254 receptacle housing or IDC socket in the same 0.100" pitch, 20-position single-row configuration. The header is unshrouded, so polarisation is handled by the mating housing's keying features — confirm those before specifying.
What is the insulation height and why does it matter?
Insulation height is 0.098" (2.50 mm) measured from the board surface to the underside of the housing. This is the clearance the header occupies above the PCB — relevant when routing traces or placing low-profile components underneath the header footprint.