Needs validationlow risk
Strong alternative from JST with matching key specs and a robust 3A current rating.
Best Alternatives to 640456-2
TE Connectivity's 640456-2 is a standard 2-position, 2.54mm pitch straight male header. Several functional alternatives exist from other manufacturers, with the primary considerations being mechanical dimensions and current rating.
AI replacement insight
Package riskmedium
Pin length, insulator height, and overall footprint must be verified from datasheets.
Electrical risklow
Most candidates have similar voltage ratings. Select a part with a 3A or higher current rating to avoid issues.
Sourcing risklow
This is a common connector type with many cross-vendor options available.
Can it be replaced directly?
No drop-in replacement has been verified. However, RE-H022TD-1190(LF)(SN) from JST is a strong candidate that is likely pin-compatible, pending a datasheet review of its mechanical dimensions.
Best replacement path
The JST part RE-H022TD-1190(LF)(SN) is the most promising alternative, offering a matching form factor and a robust 3A current rating from a reputable manufacturer.
Main risk
The primary risk is mechanical incompatibility. While pitch and pin count match, differences in pin length or housing dimensions can prevent a proper fit on the PCB.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | 640456-2 | RE-H022TD-1190(LF)(SN) | PZ254-1-02-Z-8.5 | WF-1A254A2P | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Through Hole Header | Through Hole | Pin Header | Through Hole | Through Hole / Pin Header — Mounting orientation matches (straight). Mechanical dimensions require verification.; PZ254-1-02-Z-8.5: The '8.5' in MPN implies a specific dimension that must be verified.; WF-1A254A2P: Mounting orientation matches (straight). Mechanical dimensions require verification.; WF-1A254A2P-Y: Mounting orientation matches (straight). Mechanical dimensions require verification. |
| Pitch | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm — Standard 0.1" pitch matches.; PZ254-1-02-Z-8.5: Standard 0.1" pitch matches.; WF-1A254A2P: Standard 0.1" pitch matches.; WF-1A254A2P-Y: Standard 0.1" pitch matches. |
| Current | ~3A (est.) | 3A | 3A | 2A | 3A / 2A — Strong 3A rating matches or exceeds target's likely rating.; PZ254-1-02-Z-8.5: Strong 3A rating matches or exceeds target's likely rating.; WF-1A254A2P: Potential downgrade; target is likely 3A. Verify application's current needs.; WF-1A254A2P-Y: Potential downgrade; target is likely 3A. Verify application's current needs. |
| Manufacturer | TE Connectivity | JST | - | - | JST — Cross-vendor alternative from a reputable manufacturer. |
| Color | Black (default) | - | - | - | Yellow — Housing color is yellow, target is typically black. |
Application & sourcing insights
Questions & answers
The best alternative to 640456-2 appears to be RE-H022TD-1190(LF)(SN) from JST. It matches the 2-pin, 2.54mm pitch configuration and offers a strong 3A current rating, making it a suitable functional replacement.