
Megastar
A strong alternative from the same manufacturer with matching key electrical and physical parameters.
Finding a substitute for the Megastar ZX-XH2.54-3PJK 3-pin header involves matching the 2.54mm pitch, straight through-hole mounting, and 3A/250V electrical ratings. Several strong functional alternatives exist, but require careful mechanical verification.
Several candidates match the 3A/250V rating. Risk is high if selecting a 2A-rated part.
While pitch and pin count match, minor differences in housing dimensions or features like locks can cause assembly issues. Datasheet review is critical.
This is a common connector type with multiple manufacturers, providing good sourcing flexibility.
There are no verified direct drop-in replacements for ZX-XH2.54-3PJK. However, several parts like ZX-XH2.54-3PZZ-R are strong functional alternatives that require datasheet verification for pinout and mechanical fit.
The best replacement path is to evaluate ZX-XH2.54-3PZZ-R (same manufacturer) or WAFER-XH254Z-3AM (cross-vendor) after verifying their mechanical drawings against your board layout.
The main risk when substituting is selecting a part with a lower current rating (e.g., 2A vs. 3A) or a different mechanical form factor, such as an added locking feature.

Megastar
A strong alternative from the same manufacturer with matching key electrical and physical parameters.
| Feature / factor | ZX-XH2.54-3PJK | ZX-XH2.54-3PZZ-R | WAFER-XH254Z-3AM | WF-1A254A3P | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Through Hole, Straight | Through Hole, Straight | Through Hole, Straight | Through Hole, Straight | Through Hole, Straight — Mounting type matches.; WAFER-XH254Z-3AM: Mounting type matches.; WF-1A254A3P: Mounting type matches.; WF-1A254B3P: Mounting type matches. |
| Pitch | 2.54mm | 2.54mm | 2.54mm | - | 2.54mm — Pin pitch is identical.; WAFER-XH254Z-3AM: Pin pitch is identical. |
| Current | 3.0 A | 3A | 3A | 2.0 A | 3A / 2.0 A — Current rating matches.; WAFER-XH254Z-3AM: Current rating matches.; WF-1A254A3P: Lower current rating is a significant downgrade.; WF-1A254B3P: Lower current rating is a significant downgrade. |
| Voltage | 250 V AC/DC | 250V | 250V AC/DC | 250V AC/DC | 250V / 250V AC/DC — Voltage rating matches.; WAFER-XH254Z-3AM: Voltage rating matches.; WF-1A254A3P: Voltage rating matches.; WF-1A254B3P: Voltage rating matches. |
| Temperature | -25°C to +85°C | -25°C to +85°C | - | -25°C to +85°C | -25°C to +85°C — Operating temperature range matches.; WF-1A254A3P: Operating temperature range matches. |
| Form Factor | No lock specified | - | - | - | Has locking mechanism — Locking feature may interfere with mating connector or fit. |
The best alternatives for ZX-XH2.54-3PJK are ZX-XH2.54-3PZZ-R and WAFER-XH254Z-3AM. Both match the key 3-pin, 2.54mm pitch, 3A/250V specification, but you must verify their mechanical drawings to ensure a perfect fit on your PCB.