Is there a pin-compatible replacement for HCZZ0021-4?

Currently, no pin-compatible SMT replacement with the same footprint and ratings has been identified. All reviewed candidates have a different mounting type (Through-Hole) which is not pin-compatible.

What risks should I check before replacing HCZZ0021-4?

Key risks include: 1) Mounting type mismatch (SMT vs. THT) requiring a new PCB layout. 2) Lower current rating on alternatives (e.g., 2A vs. 3A). 3) Minor dimensional differences in the housing.

HCZZ0021-4 Alternatives, Datasheet & Cross Reference | Shenzhen Hongcheng Electronics Co., Ltd.

HCZZ0021-4 is a 4-pin, 2.54mm pitch, right-angle SMT header. Finding a direct drop-in replacement is challenging, as alternatives often differ in mounting type or electrical ratings, requiring design review.

AI replacement insight

Package riskhigh

SMT vs. THT requires board redesign.

Electrical riskmedium

Some alternatives have a lower current rating (2A vs 3A).

Can it be replaced directly?

No direct pin-to-pin replacement was found. All candidates require design review due to differences in mounting type (THT vs. SMT) or electrical ratings.

Best replacement path

The best path is to select a functional alternative like WAFER-XH2.54-4PWZ, but this requires a board redesign and verification of the lower 2A current rating.

Main risk

The primary risk is the mechanical incompatibility between Surface Mount (SMT) and Through-Hole (THT) parts, requiring a PCB layout change.

Recommended alternatives

Functional alternative with same pitch and pin count, but requires board redesign for THT mounting and has a lower current rating.

View details

Alternative comparison matrix

Feature / factor	HCZZ0021-4	WAFER-XH2.54-4PWZ	ZX-XH2.54-4PWZ	Compatibility / risk
Package	Surface Mount, Right Angle	Through Hole, Right Angle	-	Through Hole, Right Angle — Requires board redesign.
Current	3.0 A	2.0 A	-	2.0 A — Candidate has lower current rating.
Pitch	2.54 mm	2.54 mm	-	2.54 mm — Pitch matches.
Pin Count	4	4	-	4 — Pin count matches.

Application & sourcing insights

Questions & answers

No direct drop-in alternative was found. Functional alternatives like XUNPU's WAFER-XH2.54-4PWZ exist, but they are through-hole parts with a lower current rating and require board redesign.