Is there a pin-compatible replacement for TJC3-4A-K?

Several candidates like XH-4PS appear to be pin-compatible based on key dimensions (4-pin, 2.5mm pitch, straight). A full mechanical drawing and pinout comparison is required to confirm a direct drop-in replacement.

What risks should I check before replacing TJC3-4A-K?

The primary risk is the operating temperature range; many alternatives are rated for -25°C to +85°C, while the target is rated for -40°C to +105°C. Also, verify mechanical dimensions from the datasheet to ensure PCB footprint compatibility.

TJC3-4A-K Alternatives, Datasheet & Cross Reference | DLL(德利)

Find alternatives for the TJC3-4A-K, a 4-pin 2.5mm pitch straight header. Substitutes often share the same form factor and electrical ratings but may have a narrower operating temperature range that requires verification.

AI replacement insight

Electrical riskmedium

Substitutes may have a lower maximum operating temperature, which must be checked against application requirements.

Package risklow

Many alternatives share the same 2.5mm pitch and straight through-hole configuration, but datasheet verification of mechanical drawings is still advised.

Can it be replaced directly?

There are several strong functional alternatives like XH-4PS that match the form factor and key electrical ratings, but they have a narrower operating temperature range. A direct drop-in replacement requires verifying this specification.

Best replacement path

Use XH-4PS or ZX-XH2.54-4PZZ-Y if the application's operating temperature is within -25°C to +85°C.

Main risk

The most common risk is a narrower operating temperature range in alternative parts.

Recommended alternatives

A strong functional alternative with matching pitch, pin count, and electrical ratings, but a narrower temperature range.

View details

Alternative comparison matrix

Feature / factor	TJC3-4A-K	XH-4PS	ZX-XH2.54-4PZZ-Y	Compatibility / risk
Package	Through Hole	Through Hole	Through Hole	Through Hole — Candidate is a straight/vertical header, matching the target.; ZX-XH2.54-4PZZ-Y: Candidate is a straight header, matching the target.
Pitch	2.50 mm	2.5mm	2.5mm	2.5mm — Pitch matches, critical for mating compatibility.; ZX-XH2.54-4PZZ-Y: Pitch matches.
Voltage	250V	250V	250V	250V — Voltage rating matches.; ZX-XH2.54-4PZZ-Y: Voltage rating matches.
Current	3A	3A	3A	3A — Current rating matches.; ZX-XH2.54-4PZZ-Y: Current rating matches.
Temperature	-40°C to +105°C	-25°C to +85°C	-25°C to +85°C	-25°C to +85°C — Candidate has a narrower operating temperature range.; ZX-XH2.54-4PZZ-Y: Candidate has a narrower operating temperature range.

Application & sourcing insights

Questions & answers

XH-4PS and ZX-XH2.54-4PZZ-Y are strong functional alternatives with the same pitch, pin count, voltage, and current ratings. However, their operating temperature range is narrower and must be verified for your application.