Needs validationhigh risk
A top-entry header from a different JST family (PA vs PH) with an incompatible footprint.
Best Alternatives to B5B-PH-SM4-TB(LF)(SN)
Finding a substitute for the JST B5B-PH-SM4-TB(LF)(SN) 5-pin SMT header requires careful review of mechanical specifications. While several parts have similar electrical ratings, differences in mounting orientation and footprint are common.
AI replacement insight
Package riskhigh
Footprint and orientation differences are common and prevent drop-in replacement.
Electrical risklow
Many alternatives match the 2A, 100V rating.
Sourcing riskmedium
Cross-vendor parts may have different quality and mating compatibility.
Can it be replaced directly?
No direct, pin-for-pin replacement for the B5B-PH-SM4-TB(LF)(SN) is confirmed. All potential alternatives require board layout changes.
Best replacement path
For new designs, consider the JST PA series like BM05B-PASS-TFT(LF)(SN). For existing boards, no drop-in replacement is available; a board revision is necessary.
Main risk
Mechanical Mismatch
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | B5B-PH-SM4-TB(LF)(SN) | BM05B-PASS-TFT(LF)(SN) | SM05B-PASS-TBT(LF)(SN) | ZX-HY2.0-5PWT | Compatibility / risk |
|---|---|---|---|---|---|
| Pinout | JST PH Series | JST PA Series | - | - | JST PA Series — Candidate is from PA series, target is PH series. Footprints are not compatible. |
| Orientation | Top-Entry | Top-Entry | - | - | Top-Entry — matched |
| Pitch | 2.0 mm | 2.0 mm | 2.0 mm | 2.0 mm | 2.0 mm — matched; SM05B-PASS-TBT(LF)(SN): matched; ZX-HY2.0-5PWT: matched; ZX-PH2.0-WT5P: matched |
| Pin Count | 5 | 5 | 5 | 5 | 5 — matched; SM05B-PASS-TBT(LF)(SN): matched; ZX-HY2.0-5PWT: matched; ZX-PH2.0-WT5P: matched |
| Package | SMT, Top-Entry | - | SMT, Side-Entry | SMT, Right-Angle | SMT, Side-Entry / SMT, Right-Angle — Candidate is side-entry, target is top-entry. Footprint is different.; ZX-HY2.0-5PWT: Candidate is right-angle (side-entry), target is top-entry.; ZX-PH2.0-WT5P: Candidate is right-angle (side-entry), target is top-entry. |
| Manufacturer | JST | - | JST | - | JST / Megastar — Same manufacturer, but different connector series (PA vs PH).; ZX-PH2.0-WT5P: Cross-vendor alternative. |
| Current | 2 A | - | - | 2.0 A | 2.0 A — matched |
Application & sourcing insights
Questions & answers
There are no direct drop-in replacements currently identified. Alternatives like JST's BM05B-PASS-TFT(LF)(SN) are functionally similar but belong to the PA series, which has a different PCB footprint than the target's PH series.