
XUNPU
Similar 2-pin, 2.0mm pitch header with higher voltage, but lower current rating and different connector series, requiring verification.
The HC-PA-2A is a 2-pin, 2.0mm pitch straight male header from HCTL rated for 3A. Finding a direct replacement is challenging, as alternatives often have lower current ratings or belong to different, mechanically incompatible connector series.
While the PCB footprint may be similar, the mating interface is different, preventing a functional connection.
All candidates have a lower 3A to 2A current rating, which may cause overheating or failure if the system operates near the original limit.
No direct, drop-in replacement was found. All candidates have a lower current rating and are mechanically different, preventing them from mating with the original counterpart.
Source a connector from the same HCTL 'HC' series or replace both male and female connectors as a set with a suitable alternative.
The primary risk is mechanical incompatibility. Candidates have a different housing shape and will not mate with the female connector intended for the HC-PA-2A.

XUNPU
Similar 2-pin, 2.0mm pitch header with higher voltage, but lower current rating and different connector series, requiring verification.
| Feature / factor | HC-PA-2A | WAFER-HY2.0-2PZZ | WAFER-PH2.0-2PJK | WF-1A200A2P | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Through Hole, Straight | Through Hole, Straight | Through Hole, Straight | Through Hole, Straight | Through Hole, Straight — Mounting type and orientation appear to match.; WAFER-PH2.0-2PJK: Mounting type and orientation appear to match.; WF-1A200A2P: Mounting type and orientation appear to match.; ZX-HY2.0-2PLT: Mounting type and orientation appear to match. |
| Current | 3A | 2.0A | 2.0A | 2.0A | 2.0A — Candidate has a lower current rating.; WAFER-PH2.0-2PJK: Candidate has a lower current rating.; WF-1A200A2P: Candidate has a lower current rating.; ZX-HY2.0-2PLT: Candidate has a lower current rating. |
| Voltage | 100V | 250V | 100V | 250V | 250V / 100V — Voltage rating is higher, which is acceptable.; WAFER-PH2.0-2PJK: Voltage ratings match.; WF-1A200A2P: Voltage rating is higher, which is acceptable.; ZX-HY2.0-2PLT: Voltage rating is higher, which is acceptable. |
| Pinout | HC Series | HY Series | PH Series | WF Series | HY Series / PH Series / WF Series — Different connector series implies incompatible mating interface.; WAFER-PH2.0-2PJK: Different connector series implies incompatible mating interface.; WF-1A200A2P: Different connector series implies incompatible mating interface.; ZX-HY2.0-2PLT: Different connector series implies incompatible mating interface. |
No ideal alternative was found. All potential candidates have a lower current rating (2A vs 3A) and belong to a different connector series, making them mechanically incompatible. The best approach is to source another 'HC' series connector or replace the full connector pair.