Is there a pin-compatible replacement for S3B-ZR-SM4A-TF(LF)(SN)?

Several connectors exist with the same 1.5mm pitch and 3-pin right-angle SMT configuration, but pin-to-pin compatibility is not guaranteed without comparing PCB footprints from the datasheets. No replacements are verified as drop-in.

What risks should I check before replacing S3B-ZR-SM4A-TF(LF)(SN)?

The primary risk is mechanical incompatibility. Check the PCB footprint, connector height, and shroud design to ensure it fits the board and mates correctly with the corresponding cable connector. Also, confirm electrical ratings meet your design's requirements.

S3B-ZR-SM4A-TF(LF)(SN) Alternatives, Datasheet & Cross Reference | JST

S3B-ZR-SM4A-TF(LF)(SN) is a 3-position, 1.5mm pitch right-angle SMT header from JST's ZH series. Key considerations for finding a replacement include verifying the mechanical footprint, mating compatibility, and electrical ratings.

AI replacement insight

Package riskhigh

Footprint and mating dimensions are not standardized across all 'ZH-compatible' vendors and must be verified.

Electrical risklow

Several candidates match or exceed the target's voltage and current ratings.

Sourcing risklow

Multiple vendors produce connectors in this popular 1.5mm pitch form factor.

Can it be replaced directly?

No verified direct drop-in replacement has been identified. Alternatives require engineering review, primarily for mechanical footprint compatibility.

Best replacement path

Cross-vendor alternatives in the ZH-compatible 1.5mm pitch family, such as HC-ZH-3PWT.

Main risk

Mechanical Mismatch

Recommended alternatives

A 3-pin, 1.5mm pitch, right-angle SMT header with matching electrical ratings and a wider temperature range.

View details

Alternative comparison matrix

Feature / factor	S3B-ZR-SM4A-TF(LF)(SN)	HC-ZH-3PWT	HCZZ0323-3	Compatibility / risk
Package	Surface Mount, Right Angle	SMT, Right Angle	Right Angle, Surface Mount	SMT, Right Angle / Right Angle, Surface Mount — Matches target's form factor.; HCZZ0323-3: Matches target's form factor, but package name is non-standard.
Pitch	1.5mm	1.5mm	1.5mm	1.5mm — Matches target's pin pitch.; HCZZ0323-3: Matches target's pin pitch.
Current	1.0A	1A	1A	1A — Current rating is identical.; HCZZ0323-3: Current rating is identical.
Voltage	50V	50V	100V	50V / 100V — Voltage rating is identical.; HCZZ0323-3: Voltage rating is higher, offering more margin.
Temperature	-25°C to +85°C	-40°C to +105°C	-25°C to +85°C	-40°C to +105°C / -25°C to +85°C — Candidate has a wider operating temperature range.; HCZZ0323-3: Operating temperature range is identical.

Application & sourcing insights

Questions & answers

Candidates like HCTL's HC-ZH-3PWT offer a similar form factor and electrical ratings. However, thorough verification of the datasheet for mechanical dimensions and footprint is essential before use.