Is there a pin-compatible replacement for X1311FVS-04-C43D35R1?

No direct pin-compatible SMT replacement has been identified in this review. All close candidates have significant form-factor differences, such as requiring through-hole mounting.

What risks should I check before replacing X1311FVS-04-C43D35R1?

The main risk is mechanical incompatibility. Verify the mounting type (SMT vs. Through-Hole), number of rows, and physical dimensions against your PCB layout. Also confirm electrical ratings meet your design requirements.

X1311FVS-04-C43D35R1 Alternatives, Datasheet & Cross Reference | XKB Connection

Finding a replacement for the X1311FVS-04-C43D35R1 1.27mm SMT header involves matching its pin count, pitch, and electrical ratings. While direct drop-in replacements are scarce, functional alternatives with different mounting types are available.

AI replacement insight

Package riskhigh

Alternatives require different mounting (Through-Hole), making them not drop-in compatible.

Electrical risklow

Functional alternatives match key electrical ratings like voltage and current.

Sourcing riskmedium

The target part is a common header type, but exact footprint matches can be difficult to source across vendors.

Can it be replaced directly?

No direct, drop-in replacement was found. The primary challenge is finding a 1x4, 1.27mm pitch SMT female header with the exact same footprint.

Best replacement path

Functional alternatives requiring a change to through-hole mounting.

Main risk

Mechanical incompatibility due to different mounting types (SMT vs. Through-Hole), requiring a PCB redesign.

Recommended alternatives

A functional alternative with the same pitch and electrical ratings, but requires through-hole mounting instead of surface mount.

View details

Alternative comparison matrix

Feature / factor	X1311FVS-04-C43D35R1	X1311WV-04J-C18D27	PM127V-11-04P-H34	Compatibility / risk
Package	SMT	Through Hole	Through Hole	Through Hole — Requires different PCB layout and soldering process.; PM127V-11-04P-H34: Requires different PCB layout and soldering process.
Pitch	1.27mm	1.27mm	1.27mm	1.27mm — matched; PM127V-11-04P-H34: matched
Rows	1	1	1	1 — matched; PM127V-11-04P-H34: matched
Current	1A	1A	1A	1A — matched; PM127V-11-04P-H34: matched
Voltage	250V	250V	-	250V — matched
Manufacturer	XKB Connection	-	FC	FC — Cross-vendor alternative.

Application & sourcing insights

Questions & answers

The best alternative depends on your ability to change the PCB layout. Parts like X1311WV-04J-C18D27 offer the same electrical function but require through-hole mounting instead of surface mount.