DDTA143EKA-7-F

Overview

The DDTA143EKA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction housed in an SC-59 package with molded plastic material. The device integrates built-in biasing resistors where R1 equals R2, nominally 4.7 kOhms each. Key electrical specifications include a maximum supply voltage of -50 V, continuous collector current of -100 mA, and power dissipation of 200 mW at 25°C ambient temperature. The component operates within a temperature range of -55°C to +150°C.

Feature Summary

• Integrates built-in biasing resistors with equal nominal values for simplified circuit design
• Utilizes epitaxial planar die construction for reliable performance
• Housed in a compact SC-59 surface mount case with green molding compound

Applications

• General-purpose switching applications requiring integrated biasing
• Interface circuits between logic gates and loads
• Driver stages for low-power digital systems

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to the tape and reel packaging configuration containing 3000 units per reel as documented in the manufacturer's ordering information table. Confirm that the product marking code 'P08' matches the required identification for this specific resistor value variant during incoming inspection.

Selection Notes

Select this component when a PNP pre-biased transistor with equal internal resistors is required. Ensure the application voltage does not exceed the -50 V supply rating and that the thermal environment allows for 200 mW dissipation without exceeding the junction temperature limit. Verify compatibility with the SC-59 footprint dimensions provided in the mechanical data section.

Part Context

This part belongs to the DDTA (R1 = R2 Series) KA family from Diodes Incorporated. It serves as the PNP counterpart to the DDTC NPN pre-biased transistor series. The 'KA' designation indicates the specific SC-59 package style and lead-free plating finish, distinguishing it from other package variants within the broader digital transistor portfolio.

Replacement Considerations

Direct substitutes must match the PNP polarity, SC-59 package, and 4.7kΩ equal resistor configuration. Verify that alternative components meet the same -50 V voltage rating and -100 mA current capacity. Check if the replacement offers equivalent gain characteristics and thermal resistance values.