Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single, Pre-Biased Bipolar Transistors

Diodes Incorporated DDTA124GCA-7-F

Name: DDTA124GCA-7-F
Brand: Diodes Incorporated
SKU: DDTA124GCA-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DDTA124GCA-7-F

Manufacturer:: Diodes Incorporated

Category:: Single, Pre-Biased Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: DDTA124GCA-7-F.pdf

Description:: TRANS PREBIAS PNP 50V SOT23-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:103

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

DDTA124GCA-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT-23 package with built-in 22 kΩ bias resistor (R2 only), −50 V V_CEO, −100 mA I_C, −0.3 V V_CE(sat) at −10 mA/−0.5 mA, and h_FE = 56 (typ) at −5 mA/−5 V, used for discrete logic-level switching in automotive body control modules.

For engineers reviewing the DDTA124GCA-7-F datasheet, DDTA124GCA-7-F pinout, DDTA124GCA-7-F application, or DDTA124GCA-7-F equivalent, key selection criteria include verified R2-only bias topology, AEC-Q101 qualification, SOT-23 thermal derating curve compliance, and h_FE stability across −55°C to +150°C operating range.

Technical Context

This device implements a single-PNP transistor with monolithic integration of one external-base bias resistor (R2), eliminating need for discrete base resistors in high-side switch configurations. It operates with fixed emitter-grounded topology and supports DC-coupled digital input drive.

The R2-only architecture provides predictable turn-on threshold and reduces PCB footprint versus dual-resistor pre-biased types. Its −50 V breakdown ratings and −100 mA continuous collector current support 12 V automotive load switching with margin.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V: Maximum allowable collector-emitter voltage before avalanche, enabling use in 24 V nominal systems with transient margin.
I_C (max)	−100 mA: Continuous collector current rating, suitable for driving LEDs, relays, or small solenoids directly.
V_CE(sat)	−0.3 V @ −10 mA/−0.5 mA: Low saturation voltage ensures minimal power loss and heat generation in switching mode.
h_FE	56 (typ) @ −5 mA/−5 V: Confirmed DC current gain supports reliable digital on/off operation without gain-dependent timing drift.
R2	22 kΩ (nom): Integrated base bias resistor sets defined turn-on current, eliminating external component count and layout variability.
T_J Range	−55°C to +150°C: Full operational temperature range qualified per AEC-Q101, validated for under-hood automotive environments.

Pinout & Package

Package: SOT-23 - surface-mount plastic case, 0.008 g weight, UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin plating.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Emitter terminal	Connected to system ground in standard high-side switch configuration; defines reference for base bias network.
2 (Base)	Base terminal	Internal connection to R2 resistor; accepts TTL/CMOS logic-level input without external pull-up or current-limiting resistor.
3 (Collector)	Collector terminal	Switched high-side output node; connects to load supply rail (e.g., 12 V battery) and load return path.

Key Features

Feature	Design Value
R2-only bias topology	Single integrated 22 kΩ resistor simplifies design by removing need for external base resistor while maintaining predictable turn-on behavior.
AEC-Q101 qualification	Validated for automotive applications including engine control, lighting, and body electronics requiring high reliability and thermal robustness.
SOT-23 footprint compatibility	Standardized 3-pin SOT-23 land pattern enables drop-in replacement and automated assembly without redesign.
RoHS-compliant "Green" construction	Halogen- and antimony-free molding compound meets global environmental compliance requirements without performance trade-offs.

Applications

Automotive LED Tail Light Control

Industrial PLC Digital Output Module

Use Scenario: Switching 12 V LED arrays in rear lighting clusters with PWM dimming capability.

IC Role / Device Role / Timing Role: High-side PNP switch controlling current flow from battery to LED anode; driven by microcontroller GPIO.

Use Value: −0.3 V V_CE(sat) minimizes power dissipation during conduction, enabling compact thermal design without heatsinking.

Use Scenario: Isolating and driving 24 V solenoid valves in factory automation control cabinets.

IC Role / Device Role / Timing Role: Discrete logic-level interface between 3.3 V/5 V controller outputs and industrial 24 V loads.

Use Value: −50 V V_CEO and −100 mA I_C provide safe margin against inductive kickback and sustained load current.

Consumer Appliance Power Sequencing

Medical Diagnostic Equipment Fan Control

Use Scenario: Enabling sequential power-up of subsystems (e.g., display backlight before main processor).

IC Role / Device Role / Timing Role: Standby-mode enable switch activated by low-power supervisor IC output.

Use Value: AEC-Q101 qualification ensures long-term reliability in always-on home appliance power management circuits.

Use Scenario: Regulating cooling fan speed via PWM in portable ultrasound units requiring EMI-controlled switching.

IC Role / Device Role / Timing Role: Low-noise, thermally stable current switch interfacing MCU PWM output to brushless fan driver input.

Use Value: Stable h_FE over −55°C to +150°C prevents duty-cycle drift due to ambient temperature variation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DDTA124ECA-7-F	Same die, different marking code; identical electrical specs and R2 value.	No functional difference; used interchangeably in same designs.	Select when legacy BOM references ECA suffix or for cross-factory traceability.
NSVDDTA124GCA-7F	AEC-Q101 qualified variant with enhanced moisture resistance (MSL 1 confirmed) and tighter R2 tolerance (±20% vs ±30%).	Better suited for high-humidity under-hood locations where long-term bias stability is critical.	Prefer for new automotive designs requiring extended lifetime validation under condensing conditions.

Compared with DDTA124GCA-7-F, DDTA124ECA-7-F offers identical functionality with alternate marking, while NSVDDTA124GCA-7F adds tighter R2 tolerance and improved moisture robustness-making it optimal for next-generation automotive deployments demanding higher process consistency.

Availability

DDTA124GCA-7-F is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC output stages, and medical equipment fan regulation requiring stable component supply and AEC-Q101 compliance.

Supply support for DDTA124GCA-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.

The DDTA R2-only series targets cost-sensitive, space-constrained applications needing simplified high-side switching-designed specifically to replace discrete transistor + resistor combinations in automotive body electronics and industrial controls.

FAQ

What is the function of the R2-only bias configuration in DDTA124GCA-7-F?

The R2-only configuration integrates a single 22 kΩ resistor between base and emitter, enabling direct logic-level drive without external bias components. This topology ensures consistent turn-on characteristics and eliminates resistor placement errors in high-volume manufacturing, especially for 3.3 V or 5 V microcontroller interfaces.

Is DDTA124GCA-7-F suitable for PWM-driven loads?

Yes-its −0.3 V V_CE(sat) and 250 MHz f_T support clean switching up to ~10 kHz PWM frequencies typical in LED dimming and fan control. Thermal resistance of 625 °C/W requires attention to PCB copper area, but no heatsink is needed below 50 mA average load current.

How does the AEC-Q101 qualification impact design validation?

AEC-Q101 certification confirms qualification for automotive applications including temperature cycling, humidity testing, and mechanical shock. Designers can omit additional reliability screening for this part in body electronics, reducing time-to-market and qualification cost for Tier 1 suppliers and OEMs.

Can DDTA124GCA-7-F replace a standard PNP transistor with external base resistor?

Yes-when configured as a high-side switch with emitter grounded, it replaces BC807-25 or MMBT2907A plus 22 kΩ base resistor. The integrated R2 ensures matched thermal tracking and eliminates solder joint reliability concerns associated with two-component solutions.

DDTA124GCA-7-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP - Pre-Biased

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Resistor - Base (R1):: -

Resistor - Emitter Base (R2):: 22 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 56 @ 5mA, 5V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 500µA, 10mA

Current - Collector Cutoff (Max):: 500nA (ICBO)

Frequency - Transition:: 250 MHz

Power - Max:: 200 mW

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

DDTA124GCA-7-F FAQ

1.How can I place an order for DDTA124GCA-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for DDTA124GCA-7-F on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for DDTA124GCA-7-F reliable?

The price and inventory of DDTA124GCA-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA124GCA-7-F is usually 5 days.

3.What payment methods are accepted for DDTA124GCA-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA124GCA-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DDTA124GCA-7-F?

DDTA124GCA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DDTA124GCA-7-F order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for DDTA124GCA-7-F?

For technical support, including DDTA124GCA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA124GCA-7-F requirements.

6.How does Aetrix verify that DDTA124GCA-7-F is sourced from the original manufacturer or authorized distributors?

All DDTA124GCA-7-F products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DDTA124GCA-7-F meets industry standards.

7.What is the process for return or replacement of DDTA124GCA-7-F?

All DDTA124GCA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA124GCA-7-F, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The DDTA124GCA-7-F part is unused and in its original packaging.

Return procedure for DDTA124GCA-7-F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…