
Harwin Inc.
A cuttable header from the same M20 series; requires cutting to size and mechanical verification.
The Harwin M20-9990246 is a standard 2-position, 2.54mm pitch through-hole male header. Several functional alternatives from other manufacturers exist, but require careful verification of mechanical dimensions to ensure a proper fit.
Pin headers require precise dimensional matching. Pin length and housing size must be checked.
Key electrical ratings like pitch and current are matched by several candidates.
No confirmed direct drop-in replacement has been identified. All candidates require user verification of mechanical drawings to ensure form and fit.
Cross-vendor functional alternatives like TE Connectivity's 640456-2 offer similar specs but require datasheet review for mechanical fit.
Mechanical mismatch in pin length, pin thickness, or plastic housing dimensions, which could prevent proper PCB assembly or mating.

Harwin Inc.
A cuttable header from the same M20 series; requires cutting to size and mechanical verification.
| Feature / factor | M20-9990246 | M20-9990245 | 640456-2 | PH-01078 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Male Pin Header | Header, Cuttable | Through Hole Header | Through Hole Header | Header, Cuttable / Through Hole Header / Pin Header — Candidate is a cuttable strip, target is a discrete 2-pin part. Functionally similar but requires different handling.; 640456-2: Both are through-hole male headers. Verify mechanical drawings for pin length and housing dimensions.; PH-01078: Both are through-hole male headers. Verify mechanical drawings for pin length and housing dimensions.; PZ254-1-02-Z-8.5: Both are through-hole male headers. Verify mechanical drawings for pin length and housing dimensions. |
| Pitch | 2.54mm | 2.54mm | 2.54mm | 2.54mm | 2.54mm — Pitch matches.; 640456-2: Pitch matches.; PH-01078: Pitch matches.; PZ254-1-02-Z-8.5: Pitch matches. |
| Positions | 2 | 2 | - | - | 2 — Position count matches. |
| Current | 3A | 3A | - | 3A | 3A — Current rating matches.; PH-01078: Current rating matches.; PZ254-1-02-Z-8.5: Current rating matches. |
| Rows | 1 | - | 1 | 1 | 1 — Row count matches.; PH-01078: Row count matches.; PZ254-1-02-Z-8.5: Row count matches. |
| Family | M20 Series | - | MTA-100 Series | - | MTA-100 Series — Well-known series from TE. |
The best alternatives are likely cross-vendor parts like TE Connectivity 640456-2, HCTL PZ254-1-02-Z-8.5, or Liansheng PH-01078. They match key specs but you must verify mechanical dimensions from their datasheets.