The electron mobility in In0.53Ga0.47As as a function of temperature h
as been calculated by the variational principle over a carrier concent
ration range of 1 x 10(14) to 1 x 10(18) cm-(3) with compensation rati
o as a parameter. We show that these results, which fit experimental d
ata, can be well represented by a simple analytical function. We also
give the tit coefficients for this expression as a function of tempera
ture for various compensation ratios which may facilitate device model
ling.