HC49/SMD Platform Crystal

BC18 - 12 X 4.7mm

The HC49/SMD Platform crystal is a low profile SMD crystal with an AT-Strip crystal blank.  Used in microprocessor, computer and computer peripheral applications.  The HC49/SMD Platform crystal offers tolerance and stability to ±5ppm, temperature ranges to -40oC to +85oC. and a small height of 4.8mm.  The HC49/SMD Platform is available in Fundamental and 3rd Overtone.  The perfect replacement for plastic SMD crystals with quicker lead time and lower cost.


  • Frequency range of 3.100MHz to 70.000MHz
  • High precision and high reliability
  • Microprocessor, computer and computer peripheral applications
  • Perfect replacement for plastic SMD crystals with quicker lead time
  • All Products meet the European Union Initiative (RoHS) for Lead (Pb) free content and requirements for re-flow profiling using lead-free solder.


Frequency Range

3.100 - 70.000 MHz

Frequency Tol. at 25ºC. ±30ppm - Standard
±5ppm to ±100ppm - Available
Temperature Range
0o to +70oC. - Standard
-40o to +85oC. - Available
Frequency Stability ±50ppm - Standard
±5ppm to ±100ppm - Available
Load Capacitance 10pF to 100pF or Series Resonant
Shunt Capacitance 7pF max.
Resistance See Below
Aging ±3ppm/1st year max.
Drive Level 1.0mW max.


Contact Us

Bomar Crystal Company
117 William Street
PO Box 10
Middlesex, NJ 08846

+ 1 (732) 356-7787
+ 1 (800) 526-3935
FAX: + 1 (732) 356-7362
FAX: + 1 (800) 777-2197

HC49/SMD platform

Equivalent Series Resistance (ESR)

Frequency MHz Mode HC49/SMD Platform
3.100-4.000 Fundamental 150 Ohms
4.001-4.999 Fundamental 100
5.000-7.999 Fundamental 80
8.000-11.999 Fundamental 60
12.000-40.000 Fundamental 40
26.000-44.999 Third Overtone 70
45.000-70.000 Third Overtone 60