Is there a pin-compatible replacement for S2B-ZR-3.4(LF)(SN)?

Several parts, including S2B-ZR(LF)(SN), share the same 1.5mm pitch, 2-pin, right-angle through-hole format. However, a true pin-compatible guarantee requires comparing the mechanical drawings in the datasheets to ensure the PCB layout matches perfectly.

What risks should I check before replacing S2B-ZR-3.4(LF)(SN)?

Before replacing, you must verify the mechanical footprint and dimensions from the datasheet. The '-3.4' in the original part number may denote a specific standoff height or other feature not present in alternatives. Also check for any differences in material, plating, or temperature range.

S2B-ZR-3.4(LF)(SN) Alternatives, Datasheet & Cross Reference | JST

S2B-ZR-3.4(LF)(SN) is a 2-pin, 1.5mm pitch right-angle header from JST's ZH series. Several functional alternatives exist from JST and other manufacturers, but require datasheet verification for footprint compatibility.

AI replacement insight

Package riskmedium

Footprint and height differences are possible between manufacturers and even within the same series (e.g., the '-3.4' suffix).

Electrical risklow

All suggested alternatives have matching or superior voltage and current ratings.

Sourcing risklow

The JST ZH series is a popular standard with multiple vendors, improving availability.

Can it be replaced directly?

No guaranteed direct replacement has been verified. S2B-ZR(LF)(SN) is the most likely candidate, but the significance of the '-3.4' suffix on the original part must be confirmed.

Best replacement path

The closest alternative is S2B-ZR(LF)(SN) from the same manufacturer, JST. However, several cross-vendor options like WAFER-ZH1.5-2PWB also exist.

Main risk

The primary risk is mechanical incompatibility. The PCB footprint and connector height must be verified, especially concerning the '-3.4' suffix on the target part number.

Recommended alternatives

A likely substitute from the same JST series; verify the meaning of the '-3.4' suffix.

View details

Alternative comparison matrix

Feature / factor	S2B-ZR-3.4(LF)(SN)	S2B-ZR(LF)(SN)	HC-ZH1.5-2AW	WAFER-ZH1.5-2PWB	Compatibility / risk
Package	Right Angle, Through Hole	Right Angle, Through Hole	Right Angle, Through Hole	Right Angle, Through Hole	Right Angle, Through Hole — Same mounting style.; HC-ZH1.5-2AW: Same mounting style.; WAFER-ZH1.5-2PWB: Same mounting style.
Voltage	50V	50V	100V	250V	50V / 100V / 250V — matched; HC-ZH1.5-2AW: Higher voltage rating provides more margin.; WAFER-ZH1.5-2PWB: Higher voltage rating provides more margin.
Current	1.0A	1.0A	1A	1A	1.0A / 1A — matched; HC-ZH1.5-2AW: matched; WAFER-ZH1.5-2PWB: matched
Manufacturer	JST	JST	HCTL	XUNPU	JST / HCTL / XUNPU — Same manufacturer and series.; HC-ZH1.5-2AW: Cross-vendor alternative.; WAFER-ZH1.5-2PWB: Cross-vendor alternative.
Part Number	S2B-ZR-3.4(LF)(SN)	S2B-ZR(LF)(SN)	-	-	S2B-ZR(LF)(SN) — Target has '-3.4' suffix, which may indicate a minor mechanical difference.

Application & sourcing insights

Questions & answers

The best alternative is likely S2B-ZR(LF)(SN) by JST, as it's from the same series. Cross-vendor options like WAFER-ZH1.5-2PWB by XUNPU are also strong candidates. Always verify the datasheet for footprint compatibility before purchasing.