Needs validationhigh risk
Same JST SUR family, but is top-entry with a lower current rating. Useful for new designs.
Best Alternatives to SM02B-SURS-TF(LF)(SN)
SM02B-SURS-TF(LF)(SN) is a 2-pin, 0.8mm pitch side-entry SMT header from JST's SUR series. Finding a direct drop-in replacement is challenging due to its specific mechanical form factor.
AI replacement insight
Package riskhigh
Orientation mismatch (side-entry vs top/vertical) prevents drop-in replacement.
Electrical riskmedium
Alternatives have lower current ratings, requiring circuit analysis.
Sourcing risklow
Functional alternatives are available but require design changes.
Can it be replaced directly?
No direct, drop-in replacement is confirmed. All identified candidates have significant mechanical or electrical differences.
Best replacement path
Use a functional alternative from the same JST SUR series, like BM02B-SURS-TF(LF)(SN), but account for the top-entry orientation in the PCB design.
Main risk
The primary risk is mechanical incompatibility due to the target's side-entry orientation, which is not matched by available alternatives.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | SM02B-SURS-TF(LF)(SN) | BM02B-SURS-TF(LF)(SN) | HC-0.8-2PLT | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Family | JST SUR | JST SUR | - | JST SUR — Both are in the JST SUR series. | |
| Pitch | 0.8 mm | 0.8 mm | 0.8 mm | 0.8 mm — Pitch matches.; HC-0.8-2PLT: Pitch matches. | |
| Orientation | Side-Entry | Top-Entry | Vertical | Top-Entry / Vertical — Candidate is top-entry, not side-entry. Not a drop-in.; HC-0.8-2PLT: Candidate is vertical, not side-entry. Not a drop-in. | |
| Current | 1.0 A | 0.5 A | 0.5 A | 0.5 A — Candidate has a lower current rating.; HC-0.8-2PLT: Candidate has a lower current rating. | |
| Positions | 2 | - | 2 | 2 — Position count matches. | |
| Package | SMT | - | SMT | SMT — Footprint and shroud dimensions require verification. |
Application & sourcing insights
Questions & answers
BM02B-SURS-TF(LF)(SN) is from the same JST SUR family but is a top-entry version with a lower current rating. It is a functional alternative for new designs but not a drop-in replacement.