DDTC144GUA-7-F

Overview

The DDTC144GUA-7-F is an NPN pre-biased small signal surface mount transistor from Diodes Incorporated, housed in a SOT-323 package. It features epitaxial planar die construction and includes a built-in bleeder resistor (R2) with a nominal value of 47 kOhms. Key electrical ratings include a collector-emitter voltage (VCEO) of 50 V, a continuous collector current (IC) of 100 mA, and power dissipation (Pd) of 200 mW. The device exhibits a DC current transfer ratio (hFE) minimum of 68 at IC = 5mA and VCE = 5V, with a gain-bandwidth product (fT) of 250 MHz. Operating temperature range spans from -55°C to +150°C.

Feature Summary

• Integrates a single built-in biasing resistor (R2 only) for simplified circuit design.
• Utilizes epitaxial planar die construction for reliable performance.
• Available in a compact SOT-323 surface mount case.
• Compliant with RoHS standards and lead-free specifications.

Applications

• Switching applications requiring integrated base biasing.
• Driver circuits for low-power loads.
• General-purpose digital logic interfacing.

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to the tape and reel packaging configuration containing 3000 units per reel. Confirm that the 'Green' molding compound designation applies to products manufactured with date codes 0627 (week 27, 2006) or newer, as earlier production runs may utilize non-green compounds containing halogens or Sb2O3 fire retardants.

Selection Notes

Select this component when a single NPN pre-biased transistor with a 47 kOhm internal bleeder resistor is required. Ensure the 50 V collector-emitter voltage rating and 100 mA current capacity meet the load requirements. Consider the SOT-323 package dimensions and thermal resistance characteristics for PCB layout and heat dissipation planning.

Part Context

This part belongs to the DDTC (R2-ONLY SERIES) UA family from Diodes Incorporated. It is specifically designed as an NPN pre-biased transistor with only the R2 resistor integrated internally. Complementary PNP types are available within the DDTA series. The 'UA' suffix denotes the SOT-323 package style.

Replacement Considerations

Direct substitutes within the same series include DDTC114GUA-7-F (10 kOhm), DDTC124GUA-7-F (22 kOhm), and DDTC115GUA-7-F (100 kOhm). Other manufacturers' equivalent NPN pre-biased transistors in SOT-323 packages may be considered if pinout and electrical parameters match.