The MMDT4401_R1_00001 from Panjit International Inc. is a dual NPN bipolar (BJT) transistor array rated 40 V and 600 mA, with 250 MHz and 225 mW, for surface mounting in a SOT-363 package.
The MMDT4401Q-7-F from Diodes Incorporated is a dual NPN bipolar (BJT) transistor array rated 40 V, 600 mA, 250 MHz and 200 mW, surface mount, in a SOT-363 package.