Diodes Incorporated DDTB123YC-7-F

Overview

DDTB123YC-7-F from Diodes Incorporated is a PNP pre-biased transistor in SOT23 package, featuring integrated 2.2 kΩ and 10 kΩ biasing resistors. It delivers V_I(OFF) = −0.3 V, V_I(ON) = −2.0 V (at I_O = −20 mA), V_O(ON) = −0.3 V, DC current gain G_L = 56, and f_T = 200 MHz - optimized for low-power digital switching in automotive body control modules.

For engineers reviewing the DDTB123YC-7-F datasheet, DDTB123YC-7-F pinout, DDTB123YC-7-F application, or DDTB123YC-7-F equivalent, key selection criteria include verified input voltage thresholds (−0.3 V off / −2.0 V on), guaranteed saturation at −50 mA output current, and AEC-Q101 qualification suitability per manufacturer documentation.

Technical Context

This device integrates two precision bias resistors (R1 = 2.2 kΩ, R2 = 10 kΩ) to eliminate external base drive components in PNP switching circuits. Its −0.3 V V_O(ON) ensures low-loss conduction, while −0.3 V V_I(OFF) enables reliable logic-level turn-off with standard CMOS/TTL outputs.

The transistor operates within −55 °C to +150 °C, supports 200 mW power dissipation on FR4 PCB, and achieves 625 °C/W thermal resistance. Its 200 MHz f_T and G_L = 56 support fast edge transitions in signal routing and LED driver enable paths.

Key Specifications

Pinout & Package

Package: SOT23 - surface-mount, lead-free, halogen-free molded plastic housing (UL 94V-0 rated), 0.008 g mass, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP pre-biased transistor applications.

Compared with DDTB113ZC-7-F and DDTB133HC-7-F, DDTB123YC-7-F balances base drive strength and current efficiency - offering −3.6 mA I_L at −5 V input while maintaining identical −2.0 V V_I(ON), making it optimal for general-purpose 3.3 V/5 V logic interfacing.

Availability

DDTB123YC-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, LED indicator drivers, and USB power switching applications requiring stable component supply and long-term production continuity.

Supply support for DDTB123YC-7-F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal devices, with design, manufacturing, and distribution operations across Asia, the Americas, and Europe.

This part belongs to the DDTB series of pre-biased transistors - engineered for simplified digital switching in automotive, industrial, and consumer systems where board space, BOM cost, and reliability are critical.

FAQ

Is DDTB123YC-7-F qualified for automotive applications?

Yes - Diodes Incorporated states that parts qualified to AEC-Q101 are available upon request, and DDTB123YC-7-F is manufactured in IATF 16949 certified facilities. Its −55 °C to +150 °C operating range, −40 V BV_CEO, and green construction align with automotive under-hood requirements. Customers must contact Diodes or their representative to obtain PPAP documentation.

What is the maximum continuous output current rating?

The absolute maximum output current is −500 mA, but the recommended continuous operating current is −50 mA at V_CE(sat) ≤ −0.3 V, based on thermal limits (200 mW PD, 625 °C/W R_θJA). Sustained operation above −50 mA requires thermal derating per the datasheet's ambient temperature curves.

Can DDTB123YC-7-F replace a standard PNP transistor like BC807?

No - DDTB123YC-7-F integrates base bias resistors and is not a direct substitute for discrete transistors without external biasing. Replacing BC807 requires circuit redesign to remove external R_B and verify logic-level compatibility, as DDTB123YC-7-F has fixed −2.0 V V_I(ON) and −0.3 V V_O(ON) thresholds.

What does the "-7-F" suffix indicate in the part number?

The "-7-F" denotes tape-and-reel packaging: 3,000 units per 7-inch reel, with 8 mm tape width, matte tin-plated leads, and RoHS-compliant green molding compound. This format is optimized for automated SMT assembly and meets IPC/JEDEC standards for moisture sensitivity level 1 handling.