DDTA123YKA-7-F

Overview

The DDTA123YKA-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 a weight of approximately 0.008 grams. The device integrates built-in biasing resistors where R1 is nominally 2.2 kΩ and R2 is nominally 10 kΩ. Key electrical ratings include a supply voltage (VCC) of -50 V, a continuous collector current (IC) of -100 mA, and power dissipation (Pd) of 200 mW. The DC current gain (hFE) has a minimum value of -33, and the transition frequency (fT) is typically 250 MHz. The operating temperature range spans from -55°C to +150°C.

Feature Summary

• Integrates two distinct biasing resistors (R1≠R2) within a single compact surface mount package to simplify circuit design.
• Utilizes epitaxial planar die construction for reliable performance in small signal applications.
• Offers a complementary NPN type availability within the same series family.

Applications

• General-purpose switching circuits requiring integrated base biasing.
• Driver stages for low-power loads or logic level translation.
• High-speed switching applications supported by high transition frequency characteristics.

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status based on manufacturing date codes, as early production units may utilize non-green molding compounds containing halogens or flame retardants. Ensure proper handling procedures are followed during assembly to maintain moisture sensitivity level 1 integrity.

Selection Notes

Select this component when a PNP configuration with unequal internal biasing resistors is required. The 2.2 kΩ input resistor and 10 kΩ feedback resistor combination suits specific drive impedance needs. Consider the SC-59 footprint constraints and thermal resistance characteristics relative to the application's power dissipation requirements.

Part Context

This part belongs to the DDTA(R1≠R2) Series KA line of pre-biased transistors. It serves as the PNP counterpart to the DDTC NPN series. The 'KA' suffix denotes the SC-59 surface mount case style. The '-7-F' suffix indicates tape and reel packaging with 3000 units per reel.

Replacement Considerations

Direct functional substitutes within the same series include DDTA123JKA-7-F (different R2 value) or other DDTA variants with matching polarity and package. Cross-reference with DDTC123YKA-7-F only if NPN polarity is acceptable for the circuit topology.