Is there a pin-compatible replacement for S3B-PH-K-S(LF)(SN)?

No direct pin-compatible, drop-in replacement has been identified. All functional alternatives require a change to either the PCB mounting technology (Through-Hole vs. SMT) or the connector orientation (right-angle vs. straight).

What risks should I check before replacing S3B-PH-K-S(LF)(SN)?

The main risk is mechanical. You must verify if your PCB layout can accommodate a different mounting type (SMT) or if your enclosure has clearance for a different connector orientation (straight vs. right-angle). Electrical parameters are a low risk with the suggested alternatives.

S3B-PH-K-S(LF)(SN) Alternatives, Datasheet & Cross Reference | JST

S3B-PH-K-S(LF)(SN) is a 3-pin, 2.0mm pitch right-angle through-hole header from JST's popular PH series. While no direct drop-in replacements are available, functional alternatives exist within the same series for SMT or straight-pin applications.

AI replacement insight

Package riskhigh

No alternatives match both mounting type and orientation. PCB redesign is likely required.

Electrical risklow

Identified alternatives from the same JST PH series have matching electrical ratings.

Sourcing risklow

Alternatives are from the same manufacturer (JST) and are part of the common PH series.

Can it be replaced directly?

There are no identified direct pin-to-pin replacements for S3B-PH-K-S(LF)(SN). All suitable alternatives require a change in either mounting type (Through-Hole to SMT) or orientation (right-angle to straight).

Best replacement path

No direct drop-in replacement was found. If the PCB can be modified, S3B-PH-SM4-TB(LF)(SN) is the SMT equivalent. If a straight orientation is acceptable, B3B-PH-K-S(LF)(SN) is the through-hole option.

Main risk

The primary risk is mechanical incompatibility. Substitutes have different mounting types or orientations, requiring PCB layout changes or verification of physical clearance.

Recommended alternatives

Functionally similar with same electrical ratings and series, but has a different mounting orientation (top-entry).

View details

Alternative comparison matrix

Feature / factor	S3B-PH-K-S(LF)(SN)	B3B-PH-K-S(LF)(SN)	S3B-PH-SM4-TB(LF)(SN)	Compatibility / risk
Package	Through Hole, Side-Entry (Right-Angle)	Through Hole, Top-Entry (Straight)	Side-Entry (Right-Angle)	Through Hole, Top-Entry (Straight) / Side-Entry (Right-Angle) — Candidate is top-entry (straight), target is side-entry (right-angle).; S3B-PH-SM4-TB(LF)(SN): Orientation matches the target.
Pinout	3	3	3	3 — Pin count and pitch match.; S3B-PH-SM4-TB(LF)(SN): Pin count and pitch match.
Voltage	2A / 100V	2A / 100V	2A / 100V	2A / 100V — Electrical ratings are identical.; S3B-PH-SM4-TB(LF)(SN): Electrical ratings are identical.
Application	JST PH Series	JST PH Series	-	JST PH Series — Same manufacturer and connector family ensures mating compatibility.

Application & sourcing insights

Questions & answers

The best alternative depends on your design flexibility. For a Surface-Mount (SMT) design, use S3B-PH-SM4-TB(LF)(SN). If you need a Through-Hole part but can accept a straight orientation, use B3B-PH-K-S(LF)(SN).