3131M232768DTTLLLL
Suzhou Hangjing Elec & Tech Co., Ltd.
Needs validationmedium risk
Matches key crystal parameters, but pinout and drive level still need FAE review.
Best Alternatives to FC31M2-32.768-NTLLLDT
FC31M2-32.768-NTLLLDT is a 32.768 kHz 12.5pF SMD timing crystal. Alternatives need pinout, load capacitance and drive-level review.
AI replacement insight
Electrical riskmedium
CL, ESR, tolerance and drive affect accuracy
Package riskmedium
size matches, pinout is not verified
Firmware risklow
passive crystal; no protocol change
Sourcing risklow
kept candidates are indexed
Can it be replaced directly?
Direct replacement for FC31M2-32.768-NTLLLDT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Review 3131M232768DTTLLLL first, then FC31M2-32.768-NTLNNDTL if tolerance is confirmed.
Main risk
Crystal load capacitance, pinout and drive level must match the oscillator circuit.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | FC31M2-32.768-NTLLLDT | 3131M232768DTTLLLL | FC31M2-32.768-NTLNNDTL | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMD 3.2x1.5mm | SMD 3.2x1.5mm | SMD 3.2x1.5mm | SMD 3.2x1.5mm — same size; FC31M2-32.768-NTLNNDTL: same size | |
| Pinout | 2 pins | 2 pins | 2 pins | 2 pins — pin function unverified; FC31M2-32.768-NTLNNDTL: pin function unverified | |
| Tolerance | ±20 ppm | ±20 ppm | ±10 or ±20/30/50 | ±20 ppm / ±10 or ±20/30/50 — same tolerance; FC31M2-32.768-NTLNNDTL: conflicting ES data | |
| Temperature | -40 to +85°C | -40 to +85°C | -40 to +85°C | -40 to +85°C — same range; FC31M2-32.768-NTLNNDTL: same range | |
| Application | 12.5pF, ESR<70k | 12.5pF, ESR<70k | 12.5pF, ESR<70k | 12.5pF, ESR<70k — drive missing; FC31M2-32.768-NTLNNDTL: aging and drive missing |
Application & sourcing insights
Questions & answers
Verified drop-in options for FC31M2-32.768-NTLLLDT 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.