DDTA114YUA-7

Overview

The DDTA114YUA-7 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 = 10 kΩ and R2 = 10 kΩ. The device is housed in a SOT-323 package, suitable for surface mount applications. Key electrical ratings include a supply voltage (VCC) of -50 V, an output current (IO) of -70 mA, and a power dissipation (Pd) of 200 mW. The gain-bandwidth product (fT) is typically 250 MHz at VCE = -10 V and IE = 5 mA. Operating temperatures range from -55°C to +150°C.

Feature Summary

• Integrates built-in biasing resistors with unequal resistance ratios (R1≠R2 series).
• Utilizes epitaxial planar die construction for reliable performance.
• Complementary NPN types are available within the DDTC series.

Applications

• General-purpose switching circuits requiring integrated biasing.
• Driver stages for low-power loads where resistor space is limited.
• Signal inversion applications utilizing the equivalent inverter circuit topology.

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details. The datasheet lists the tape and reel variant as DDTA114YUA-7-F with a shipping quantity of 3000 units. Confirm that the requested part matches the required marking code 'P14' for this specific resistor configuration. Ensure compliance with RoHS standards if lead-free plating is required for the assembly process.

Selection Notes

Select this component when a PNP transistor with fixed base and emitter resistors is needed to simplify circuit design. The 10 kΩ input resistor value determines the input current requirements. Verify that the -70 mA output current rating meets the load demands. Consider the thermal resistance of 625 °C/W when designing for high ambient temperatures or limited board space.

Part Context

This component belongs to the DDTA (R1≠R2 SERIES) UA family from Diodes Incorporated. It shares the SOT-323 case style with other variants like DDTA113ZUA and DDTA123YUA. The 'UA' suffix indicates the specific surface mount package type. The marking code for this part is P14, distinguishing it from other resistor combinations in the same package.

Replacement Considerations

Direct substitutes within the same manufacturer's lineup include other DDTA114 variants such as DDTA114WUA, provided the resistor ratios match the application requirements. Complementary NPN equivalents are available in the DDTC series. Verify pin compatibility and electrical ratings before substituting with components from other manufacturers.