Is there a pin-compatible replacement for 640456-4?

While no replacement can be guaranteed as pin-compatible without a full datasheet comparison, 640454-4 is the most likely candidate. It has an identical form factor (4-pin, 2.54mm, single row, straight). Always check pin length and housing dimensions before ordering.

What risks should I check before replacing 640456-4?

Before replacing 640456-4, check three main things: 1) Mechanical Fit: Ensure the pin length, pin squareness, and insulator height match your design. 2) Contact Plating: Ensure the replacement has tin plating to match the original, or if using gold, ensure the mating part is also gold. 3) Mounting Type: Confirm the replacement is a straight header, not right-angle.

640456-4 Alternatives, Datasheet & Cross Reference | TE Connectivity

The TE Connectivity 640456-4 is a standard 4-position, single-row male pin header with a 2.54mm pitch. Designed for through-hole PCB mounting, it features straight pins and tin-plated contacts, making it a common choice for board-to-board or wire-to-board connections.

AI replacement insight

Package risklow

Key dimensions like pitch and positions match across several candidates, but pin length and housing size must be verified from datasheets.

Electrical riskmedium

Some candidates use Gold plating instead of Tin, which can affect cost and long-term reliability if mated with incompatible connectors.

Sourcing risklow

This is a common connector type with multiple manufacturers, offering good availability from various sources.

Can it be replaced directly?

Yes, 640454-4 is a likely direct replacement for 640456-4. Both are 4-pin, 2.54mm pitch straight headers from TE Connectivity with tin-plated contacts. Always verify pin length and housing dimensions from the datasheets before production.

Best replacement path

The most promising replacement is TE Connectivity's 640454-4, as it is from the same manufacturer and has matching critical specifications, including tin plating. However, a full datasheet review to confirm mechanical dimensions is essential.

Main risk

The primary risk is a subtle difference in mechanical dimensions, such as pin length or insulator height, which could affect PCB assembly and mating connector fit. A secondary risk is contact plating mismatch with other candidates.

Recommended alternatives

Strong alternative from the same manufacturer with matching key specs and contact plating.

View details

Alternative comparison matrix

Feature / factor	640456-4	640454-4	XDZ254-1-04-Z-2.5-G1	Compatibility / risk
Package	Header	Through Hole	2.54mm Pitch Header	Through Hole / 2.54mm Pitch Header — Package name differs, but mounting type and key dimensions match. Verification of mechanical drawing recommended.; XDZ254-1-04-Z-2.5-G1: Package name differs, but mounting type and key dimensions match. Verification of mechanical drawing recommended.
Rows	1	1	1	1 — matched; XDZ254-1-04-Z-2.5-G1: matched
Mounting Type	Through Hole	Through Hole	-	Through Hole — matched
Contact Plating	Tin	Tin	Gold	Tin / Gold — matched; XDZ254-1-04-Z-2.5-G1: Gold plating may offer better performance but can increase cost and requires mating connector compatibility check.

Application & sourcing insights

Questions & answers

The best alternative appears to be 640454-4, also from TE Connectivity. It shares the same manufacturer, pitch, pin count, and tin plating, making it a very strong candidate. However, you must verify the mechanical drawings in the datasheet.