B57861S0103F040
EPCOS - TDK Electronics
Needs validationmedium risk
10kΩ ±1% leaded NTC candidate with stronger temp range, but curve and pitch need review.
Best Alternatives to MF52A103F3950 (A1)
MF52A103F3950 (A1) is a 10kΩ ±1% leaded NTC with B25/50 3950K. Available candidates need curve and lead-pitch review.
AI replacement insight
Electrical riskmedium
B basis differs on best candidate.
Package riskhigh
1.7mm pitch not proven.
Firmware risklow
Passive NTC, but lookup tables may need update.
Sourcing riskmedium
PDFs exist but are not checked here.
Can it be replaced directly?
No pin-compatible replacement is proven from the provided fields.
Best replacement path
Start with B57861S0103F040, then verify B25/50 curve, body, and 1.7mm lead pitch.
Main risk
Lead pitch and NTC B-curve mismatch can cause fit or temperature error.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | MF52A103F3950 (A1) | B57861S0103F040 | B57451V5103H062 | NTCLE100E3103JB0 | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 10kΩ | 10kΩ | 10kΩ | 10kΩ | 10kΩ — same R25; B57451V5103H062: same R25; NTCLE100E3103JB0: same R25; NTCLE213E3103FLB0: same R25 |
| Tolerance | ±1% | ±1% | ±3% | ±5% | ±1% / ±3% / ±5% — same R tol; B57451V5103H062: less accurate; NTCLE100E3103JB0: lower accuracy; NTCLE213E3103FLB0: same R tol |
| Tcr | B25/50 3950K | B25/100 3988K | B25/50 3940K | B25/85 3977K | B25/100 3988K / B25/50 3940K / B25/85 3977K / missing — curve basis differs; B57451V5103H062: close B; NTCLE100E3103JB0: curve basis differs; NTCLE213E3103FLB0: curve unknown |
| Power | 50mW | 60mW | - | 500mW | 60mW / 500mW / missing — higher rating; NTCLE100E3103JB0: higher rating; NTCLE213E3103FLB0: rating absent |
| Temperature | -55..125°C | -55..155°C | -40..150°C | -40..125°C | -55..155°C / -40..150°C / -40..125°C — wider range; B57451V5103H062: cold end weaker; NTCLE100E3103JB0: low end reduced |
| Package | Plugin 1.7mm | - | 0805 SMD | - | 0805 SMD / Bead — PCB change; NTCLE213E3103FLB0: pitch absent |
Application & sourcing insights
Questions & answers
B57861S0103F040 is the closest kept candidate, but it still needs B25/50 and lead-pitch verification.