Is there a pin-compatible replacement for 640457-2?

Several candidates share the same 2-pin, 2.54mm pitch through-hole footprint. However, true pin-to-pin compatibility is not guaranteed due to differences in locking mechanisms and electrical ratings. A datasheet review is required.

What risks should I check before replacing 640457-2?

The main risks are mechanical and electrical. Candidates may lack the MTA-100 friction lock, causing mating issues. Some alternatives also have a lower current rating (e.g., 2A vs. the series' typical 3A+), which could be a reliability risk under load.

640457-2 Alternatives, Datasheet & Cross Reference | TE Connectivity

TE Connectivity's 640457-2 is a 2-pin, 2.54mm pitch MTA-100 header with a friction lock. While no direct drop-in replacement has been verified, several alternatives exist that require careful review of mechanical locking and current ratings.

AI replacement insight

Mechanical riskhigh

Most alternatives lack the MTA-100 friction lock, which can compromise the mating connection's integrity.

Electrical riskmedium

Some candidates have a lower current rating (2A), which requires verification against the application's load.

Can it be replaced directly?

No verified direct drop-in replacement for 640457-2 is available. All candidates have deviations in either the locking mechanism or current rating that require engineering review.

Best replacement path

Prioritize WF-1A254B2P if the locking feature is mandatory, but validate the lower 2A current rating. If the lock is optional, ZX-HA2.54-2PZZ-R is a stronger electrical match.

Main risk

Mechanical mismatch due to the missing friction lock feature on most alternatives, and electrical risk from lower current ratings on others.

Recommended alternatives

Mechanically similar with a locking feature, but has a lower current rating (2A).

View details

Alternative comparison matrix

Feature / factor	640457-2	WF-1A254B2P	ZX-HA2.54-2PZZ-R	ZX-HA2.54-2PZZ-Y	Compatibility / risk
Package	Through Hole, Straight	Through Hole, Straight	Through Hole, Straight	Through Hole, Straight	Through Hole, Straight — Footprint and orientation match.; ZX-HA2.54-2PZZ-R: Basic footprint matches.; ZX-HA2.54-2PZZ-Y: Basic footprint matches.
Feature	MTA-100 Friction Lock	Locking Mechanism	None (Basic Header)	None (Basic Header)	Locking Mechanism / None (Basic Header) — Visually similar locking ramp.; ZX-HA2.54-2PZZ-R: Lacks friction lock.; ZX-HA2.54-2PZZ-Y: Lacks friction lock.
Current	~3A (Typical for series)	2.0A	3A	3A	2.0A / 3A — Lower current rating.; ZX-HA2.54-2PZZ-R: Rating is comparable.; ZX-HA2.54-2PZZ-Y: Rating is comparable.
Material	Copper Alloy	Brass	-	-	Brass — Different base material.
Pitch	2.54mm	-	2.54mm	2.54mm	2.54mm — matched; ZX-HA2.54-2PZZ-Y: matched

Application & sourcing insights

Questions & answers

The best alternative depends on your priority. For applications needing the locking feature, BXCONN's WF-1A254B2P is a close match but has a lower current rating. For applications where the lock is not needed, Megastar's ZX-HA2.54 series offers a similar electrical rating.