DDC143EH-7

The DDC143EH-7 is a dual NPN pre-biased transistor (also known as a bias resistor transistor or BRT) from Diodes Incorporated. It integrates two NPN transistors with built-in bias resistors R1 and R2, each 4.7 kΩ, simplifying circuit design by reducing external component count. This device is designed for use in switching and amplification applications where space is limited.

Key electrical specifications include a collector-emitter breakdown voltage (VCEO) of 50 V, a maximum collector current (IC) of 100 mA, and a power dissipation of 150 mW. The DC current gain (hFE) is a minimum of 20 at 10 mA, 5 V, and the transition frequency (fT) is 250 MHz. The saturation voltage (VCE(sat)) is 300 mV maximum at 500 µA base current and 10 mA collector current.

The device is housed in a compact SOT-563 surface mount package, measuring only 0.005 grams approximate weight. It is supplied in tape and reel packaging with 3,000 units per reel, suitable for automated assembly. The operating temperature range is -55°C to +150°C, and the thermal resistance from junction to ambient is 833°C/W when mounted on FR4 with recommended pad layout.

Compliance features include RoHS3 compliance, lead-free construction, and halogen and antimony free (green device). Moisture sensitivity level is 1 (unlimited). The terminals are matte tin annealed over copper leadframe, solderable per MIL-STD-202 Method 208. This device is ideal for space-constrained applications requiring integrated bias resistors, such as load switches, line drivers, and signal conditioning circuits.