Question

d͡ʒ English judge, gym, and Jim. Some dialects of Spanish, typically Caribbean ones, pronounce the y and ll  this way: yo, llave.  It's typically written without the ligature on top and as a single unit symbol: [ʤ].

Accepted Answer

Voiced Palato-Alveolar Affricate http://en.wikipedia.org/wiki/Voiced_palato-alveolar_affricate

Symbol	d͡ʒ
Name	Voiced Palato-Alveolar Affricate
Notes	English judge, gym, and Jim. Some dialects of Spanish, typically Caribbean ones, pronounce the y and ll this way: yo, llave. It's typically written without the ligature on top and as a single unit symbol: [ʤ].
Ref	http://en.wikipedia.org/wiki/Voiced_palato-alveolar_affricate

Palato Alveolar Affricate J Typically Y Ll D͡ʒ Voiced