Needs validationmedium risk
JST PH SMT 4-pin option, but side-entry orientation needs layout review.
Best Alternatives to B4B-PH-SM4-TB(LF)(SN)
B4B-PH-SM4-TB(LF)(SN) is a 4-position 2.0mm JST PH SMT shrouded header. Alternatives need footprint, shroud, and mating-plug checks.
AI replacement insight
Electrical risklow
Kept parts meet or exceed 2A rating.
Package riskhigh
Several options change orientation or mount.
Firmware risklow
Passive connector; no firmware impact.
Sourcing riskmedium
Some lifecycle fields are missing.
Can it be replaced directly?
No pin-compatible replacement is proven from the provided evidence.
Best replacement path
Start with same-series JST PH SMT options, then verify orientation and footprint drawings.
Main risk
Mechanical fit and mating direction are the main risks.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | B4B-PH-SM4-TB(LF)(SN) | S4B-PH-SM4-TB(LF)(SN) | ZX-PH2.0-WT4P | B4B-PH-K-S(LF)(SN) | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMT Header | SMT Header | - | - | Through Hole — not same footprint |
| Interface | top-entry shrouded | side-entry shrouded | - | - | PH top-entry — same series role |
| Pinout | 4 pos, 1 row | 4 pos, rows missing | - | - | 1x4 claimed — drawing not checked |
| Current | 2 A | 2 A | - | - | 2 A — same rating |
| Voltage | 100 V | 100 V | - | - | 250 V — higher rating |
Application & sourcing insights
Questions & answers
S4B-PH-SM4-TB(LF)(SN) is the closest same-series SMT option, but its side-entry form needs review.