Is there a pin-compatible replacement for X49SM12MSD2SC?

Not verified from the provided fields. Package and pin count match, but pinout evidence is missing.

What risks should I check before replacing X49SM12MSD2SC?

Check pinout, package drawing, AT fundamental mode, shunt capacitance, ESR and oscillator start-up margin.

X49SM12MSD2SC Alternatives, Datasheet & Cross Reference | YXC Crystal Oscillators

X49SM12MSD2SC is a 12 MHz HC-49SMD passive crystal. Candidate replacements must match frequency, load capacitance, tolerance, stability, package and pinout.

AI replacement insight

Electrical riskmedium

Key timing values match, but mode and shunt capacitance need check.

Package risklow

HC-49SMD and 2 pins match in catalog fields.

Firmware risklow

Same 12 MHz frequency avoids clock-rate change.

Sourcing riskmedium

Lifecycle is not detailed beyond catalog data.

Can it be replaced directly?

No verified pin-compatible replacement is shown from the provided data.

Best replacement path

H6OEL89CSC-SUGYLC-12M is the closest catalog candidate, pending datasheet pinout and mode review.

Main risk

Pinout, vibration mode and shunt capacitance are not fully confirmed.

Recommended alternatives

Same-family 12 MHz HC-49SMD crystal candidate; verify pinout and mode before use.

View details

Alternative comparison matrix

Feature / factor	X49SM12MSD2SC	H6OEL89CSC-SUGYLC-12M	Compatibility / risk
Package	HC-49SMD	HC-49SMD	HC-49SMD — same catalog package
Pinout	2 pin	2 pin	2 pin — pin function not shown
Application	12 MHz, 20 pF	12 MHz, 20 pF	12 MHz, 20 pF — timing values align
Tolerance	±20 ppm, ±30 ppm	±20 ppm, ±30 ppm	±20 ppm, ±30 ppm — tolerance and stability align
Temperature	-20 to +70C	-20 to +70C	-20 to +70C — same range

Application & sourcing insights

Questions & answers

H6OEL89CSC-SUGYLC-12M is the closest provided candidate, but it still needs FAE datasheet review.