Electrical connector assembly having locking device

An electrical connector assembly comprising:

• a first connector comprising a first dielectric housing, a plurality of first terminals received in the first dielectric housing and a latch assembled on the first dielectric housing, the first dielectric housing comprising an end wall defining a receiving space, the latch comprising a retaining portion retained in the receiving space and a spring portion comprising a pair of spring legs extending downwardly from a lower end of the retaining portion, and a locking portion extending downwardly form each of the spring legs, each of the spring legs having a curved section, and the retaining portion and the locking portion being coplanar with each other;
• and
• a second connector comprising a second dielectric housing defining a recess to receive the curved sections of the spring legs and a plurality of second terminals received in the second dielectric housing and electrically connecting with the first terminals;
• wherein
• the receiving space of the first dielectric housing comprises a cutout receiving the spring portion of the latch therein, an upper indentation communicating with the cutout and receiving the retaining portion of the latch therein, and a lower slot communicating with the cutout and receiving the locking portion of the latch therein.