DDTA144ECA-7-F

Overview

The DDTA144ECA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction in a SOT-23 package. The device integrates built-in biasing resistors with nominal values of R1 = 47 kΩ and R2 = 47 kΩ, maintaining a resistance ratio of 1. Key electrical parameters include a supply voltage (VCC) of -50 V, a continuous collector current (IC) of -100 mA, and a power dissipation (PD) of 200 mW at +25°C ambient temperature. The DC current gain (hFE) has a minimum value of 68 at VO = -5V and IO = -5mA. The transition frequency (fT) is typically 250 MHz. The component operates within a temperature range of -55°C to +150°C.

Feature Summary

• Integrates two equal-value biasing resistors (R1=R2) to simplify circuit design and reduce board space.
• Constructed using epitaxial planar die technology for reliable performance.
• Qualified to AEC-Q101 standards for high reliability applications.
• Compliant with RoHS directives and free from halogen and antimony.

Applications

• Switching applications requiring integrated base drive control.
• Driver circuits for logic interfaces.
• Automotive electronics systems meeting AEC-Q101 requirements.

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to the standard reel quantity of 3,000 units per 7-inch tape width. Confirm that the 'CA' designation aligns with the required resistor tolerance specifications. Ensure compliance with RoHS 3 and lead-free definitions if environmental regulations apply to the final assembly. Check for PPAP capability requirements if the application involves automotive manufacturing processes.

Selection Notes

Select this component when a PNP configuration with equal internal biasing resistors is required. The 47 kΩ resistor values are suitable for moderate drive currents. Compare the 200 mW power dissipation limit against thermal constraints in the target enclosure. Verify that the -50 V supply voltage rating exceeds the maximum circuit voltage. Consider the SOT-23 footprint dimensions for PCB layout compatibility.

Part Context

This part belongs to the DDTA (R1 = R2 Series) CA family from Diodes Incorporated. It serves as the PNP counterpart to the DDTC NPN series. The '144' identifier specifically denotes the 47 kΩ resistor value within this lineup. Other variants in the series offer different resistance values such as 2.2 kΩ or 10 kΩ while sharing the same package and general electrical characteristics.

Replacement Considerations

Direct functional equivalents may include other PNP pre-biased transistors with 47 kΩ internal resistors in SOT-23 packages. Verify pinout compatibility and absolute maximum ratings before substitution. Automotive-grade replacements must meet AEC-Q101 standards. Standard commercial grade parts may lack the specific qualification documentation required for regulated industries.