SMD component

Dear friends,
i need informations about the type of the SMD component shown below. i've draw it beccause i cannt take a clear photo to it. please tell me if that is a diode or not and how can i test it?
note/ this smd component relating to a semiens plc card.
waiting for help..

Just a guess, looks like a capacitor with the 4.7 and the 50D numbers. If it is not a capacitor and is a diode it will read low resistance in forward polarity direction and high resistance in the reverse polarity direction using an ohmeter. If it happens to be a resistor it will read the same with either polarity and a value of 4.7 ohms or some multipier such as 47, 470, 4700 or even higher. Maybe this will help a little.

This is a 4.7uf 50V tantalum capacitor. Bar indicates +polarity.

testing

thanx 4 ur help friends, thats akind from u. but please advice me how to test it using avo?..