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

No, a direct pin-compatible replacement has not been identified. All reviewed candidates differ in either mounting orientation (vertical vs. right-angle) or mounting technology (SMT vs. through-hole), requiring PCB layout verification.

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

The primary risk is mechanical incompatibility. You must verify the substitute's mounting orientation and technology match your PCB layout and enclosure. Check the datasheet drawings for footprint and height dimensions before ordering.

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

The JST S3B-ZR(LF)(SN) is a 3-position, 1.5mm pitch, right-angle through-hole header from the popular ZH series. While no direct drop-in substitutes were found, several functional alternatives with different mounting styles are available.

AI replacement insight

Package riskhigh

No candidates match both mounting technology and orientation.

Electrical risklow

Most candidates match or exceed key electrical ratings.

Can it be replaced directly?

No direct drop-in replacement for the S3B-ZR(LF)(SN) has been identified in this analysis. All alternatives require mechanical verification.

Best replacement path

For new PCB designs, consider the SMT version S3B-ZR-SM4A-TF(LF)(SN). For existing boards, no drop-in replacement was found; a board redesign may be required.

Main risk

Mechanical mismatch is the main risk; substitutes have different mounting orientations (vertical vs. right-angle) or technologies (SMT vs. through-hole).

Recommended alternatives

SMT version of the target connector; requires a different PCB layout but maintains the right-angle orientation.

View details

Alternative comparison matrix

Feature / factor	S3B-ZR(LF)(SN)	S3B-ZR-SM4A-TF(LF)(SN)	B3B-ZR(LF)(SN)	ZX-ZH1.5-3PLT	Compatibility / risk
Package	Through Hole, Right Angle	Surface Mount, Right Angle	Through Hole, Vertical	Through Hole, Vertical	Surface Mount, Right Angle / Through Hole, Vertical — Candidate is SMT, target is Through-Hole.; B3B-ZR(LF)(SN): Candidate is vertical mount, target is right-angle.; ZX-ZH1.5-3PLT: Candidate is vertical mount, target is right-angle.
Voltage	50V	50V	50V	250V	50V / 250V — Voltage rating matches.; B3B-ZR(LF)(SN): Voltage rating matches.; ZX-ZH1.5-3PLT: Higher voltage rating provides more margin.
Current	1.0A	1.0A	1.0A	1A	1.0A / 1A — Current rating matches.; B3B-ZR(LF)(SN): Current rating matches.; ZX-ZH1.5-3PLT: Current rating matches.
Temperature	-25°C to +85°C	-25°C to +85°C	-25°C to +85°C	-40°C to +105°C	-25°C to +85°C / -40°C to +105°C — Operating temperature range matches.; B3B-ZR(LF)(SN): Operating temperature range matches.; ZX-ZH1.5-3PLT: Wider operating temperature range.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found. The best path depends on your design: for new layouts, the SMT version S3B-ZR-SM4A-TF(LF)(SN) is a strong choice. If your layout can accommodate a vertical header, JST's B3B-ZR(LF)(SN) is an option.