
HCTL
Strong alternative with matching pitch, pin count, and current rating, plus a higher voltage rating.
Find verified substitutes and functional alternatives for the Nextron Z-21104110021001, a 4-pin 2.54mm pitch straight male header. Review key parametric and mechanical differences before replacement.
Pin length and insulator height must be verified from datasheets.
Top candidates match or exceed key electrical ratings.
Multiple vendors offer similar standard pin headers.
Direct replacement for Z-21104110021001 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
HCTL PM254-1-04-Z-8.5 is a strong candidate with matching key electrical specs and a higher voltage rating. Verify mechanical drawings for pin-to-pin compatibility.
The primary risk is mechanical incompatibility, such as different pin lengths or insulator heights, which could prevent proper mating or PCB assembly.

HCTL
Strong alternative with matching pitch, pin count, and current rating, plus a higher voltage rating.
| Feature / factor | Z-21104110021001 | PM254-1-04-Z-8.5 | HB-PH3-25414PB2GOP | MH254V-11-04-1000 | Compatibility / risk |
|---|---|---|---|---|---|
| Gender | Male Pin | Male Pin | Male Pin | Male Pin | Male Pin — Matches target type.; HB-PH3-25414PB2GOP: Matches target type.; MH254V-11-04-1000: Matches target type. |
| Pitch | 2.54mm | 2.54mm | 2.54mm | 2.54mm | 2.54mm — Identical pitch.; HB-PH3-25414PB2GOP: Identical pitch.; MH254V-11-04-1000: Identical pitch. |
| Voltage | 250V AC/DC | 1000V AC/DC | 250V | Not specified | 1000V AC/DC / 250V / Not specified — Higher voltage rating provides more margin.; HB-PH3-25414PB2GOP: Voltage rating matches.; MH254V-11-04-1000: Voltage rating must be confirmed from datasheet. |
| Current | 3A | 3.0A | 3A | 3A | 3.0A / 3A — Current rating matches.; HB-PH3-25414PB2GOP: Current rating matches.; MH254V-11-04-1000: Current rating matches. |
| Insulator Height | Not specified | 8.5mm | - | - | 8.5mm — Verify if this height fits the application. |
Verified drop-in options for Z-21104110021001 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.