ZX-HY2.0-3PLT
Megastar
Needs validationmedium risk
Potential form-fit match from another vendor, but has a lower current rating. Pinout verification is required.
Best Alternatives to BM03B-PASS-TFT(LF)(SN)
Reviewing alternatives for the JST BM03B-PASS-TFT(LF)(SN), a 3-pin 2.0mm pitch top-entry SMT header. Key considerations for substitutes include matching the top-entry mounting style, 3A current rating, and verifying the PCB footprint.
AI replacement insight
Package riskhigh
Most alternatives have a different mounting style (side-entry or TH).
Electrical riskmedium
Many candidates have lower current ratings, requiring design review.
Can it be replaced directly?
Direct replacement for BM03B-PASS-TFT(LF)(SN) should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The most promising path is ZX-HY2.0-3PLT, which requires verifying the footprint and accepting a lower current rating of 2A.
Main risk
The main risks are mechanical incompatibility due to different mounting orientations (top vs. side entry) and electrical stress from lower current ratings.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | BM03B-PASS-TFT(LF)(SN) | ZX-HY2.0-3PLT | SM03B-PASS-TBT(LF)(SN) | ZX-PH2.0-WT3P | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Top-Entry SMT | Vertical SMT | Side-Entry SMT | Right-Angle SMT | Vertical SMT / Side-Entry SMT / Right-Angle SMT — Mounting orientation appears to match.; SM03B-PASS-TBT(LF)(SN): Target is top-entry; this is a form-factor mismatch.; ZX-PH2.0-WT3P: Target is top-entry; this is a form-factor mismatch. |
| Pinout | See datasheet | Unknown | - | - | Unknown — Footprint must be verified from datasheet. |
| Current | 3 A | 2.0 A | 1.0 A | 2.0 A | 2.0 A / 1.0 A — Lower current rating requires derating analysis.; SM03B-PASS-TBT(LF)(SN): Significant electrical downgrade.; ZX-PH2.0-WT3P: Lower current rating requires derating analysis. |
| Manufacturer | JST | Megastar | - | Megastar | Megastar — Cross-vendor part requires qualification.; ZX-PH2.0-WT3P: Cross-vendor part requires qualification. |
| Voltage | 250 V | - | 100 V | 250 V | 100 V / 250 V — Significant electrical downgrade.; ZX-PH2.0-WT3P: Voltage rating matches. |
| Pitch | 2.0 mm / 3 pos / 1 row | - | 2.0 mm / 3 pos / 1 row | - | 2.0 mm / 3 pos / 1 row — Key connector dimensions match. |
Application & sourcing insights
Questions & answers
Verified drop-in options for BM03B-PASS-TFT(LF)(SN) are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.