2012-01-13NEW Products ! Crystal unit with Thermistor 2.5 x 2.0mm

Model               : THR-2520
Size                : 2.5 x 2.0 mm, 1.0t Max
Frequency Range     : 19.2 to 52 MHz
Frequency Tolerance : ± 10 ppm (+25℃)
Frequency Stability : ± 12 ppm (-30℃ to +85℃)
ESR                 : 70 ΩMax.

Note
http://www.tewamerica.com/products/products02.html