DDTA143XE-7-F

Overview

The DDTA143XE-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction and integrates internal biasing resistors with nominal values of R1 = 4.7 kΩ and R2 = 10 kΩ. The device operates within a supply voltage range of -50 V and supports a continuous collector current of -100 mA. Power dissipation is rated at 150 mW, with a thermal resistance (junction to ambient) of 833 °C/W. The component is housed in a SOT-523 package and complies with AEC-Q101 standards for high reliability.

Feature Summary

• Integrates dual biasing resistors (R1≠R2) to simplify circuit design
• Qualified to AEC-Q101 automotive reliability standards
• Totally lead-free and fully RoHS compliant
• Halogen and antimony-free green device

Applications

• Automotive electronic systems requiring high reliability
• General-purpose switching applications
• Driver circuits for low-power loads

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to the 3,000-unit reel packaging configuration. Confirm that the marking code 'P09' matches the required identification for production traceability. Ensure compliance with RoHS 2 and RoHS 3 directives if operating in regulated regions. Check for any specific environmental handling requirements related to moisture sensitivity level 1.

Selection Notes

Select this component when a PNP digital transistor with unequal biasing resistors (4.7k/10k) is required. Compare against the complementary NPN type DDTC143XE for push-pull configurations. Consider the 150 mW power dissipation limit and SOT-523 footprint constraints during PCB layout. Verify input voltage tolerances (-7V to -20V) against the specific logic levels of the driving microcontroller or interface.

Part Context

This part belongs to the DDTA(R1≠R2 Series)E family of pre-biased transistors from Diodes Incorporated. It is distinct from equal-resistor variants like the DDTA114 series. The 'E' suffix denotes the specific resistor ratio configuration, while '-7-F' indicates the tape and reel packaging format compatible with automated assembly equipment.

Replacement Considerations

Direct functional substitutes include other DDTA143XE variants from different manufacturers, provided pinouts and electrical characteristics match. Complementary designs may require pairing with the DDTC143XE NPN counterpart. Verify that replacement parts meet the same AEC-Q101 qualification and RoHS compliance standards.