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

Diodes Incorporated DDTA114EKA-7-F

Name: DDTA114EKA-7-F
Brand: Diodes Incorporated
SKU: DDTA114EKA-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DDTA114EKA-7-F

Manufacturer:: Diodes Incorporated

Category:: Single, Pre-Biased Bipolar Transistors

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

Datasheet:: DDTA114EKA-7-F.pdf

Description:: TRANS PREBIAS PNP 50V SC59-3

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Product details

Overview

DDTA114EKA-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SC-59 package with integrated R1 = R2 = 10 kΩ bias resistors, −50 V V_CEO, −50 mA I_C max, and DC current gain (h_FE) of 30 at −5 mA/−5 V. It functions as a digital switch or level translator in low-power logic interface circuits.

For engineers reviewing the DDTA114EKA-7-F datasheet, DDTA114EKA-7-F pinout, DDTA114EKA-7-F application, or DDTA114EKA-7-F equivalent, key selection criteria include input voltage thresholds (V_IN(on) = −1.9 V typ), output saturation voltage (V_CE(sat) = −0.1 V typ at −10 mA), built-in resistor tolerance (±30%), and SC-59 thermal resistance (625 °C/W).

Technical Context

This device implements a single PNP bipolar junction transistor with monolithically integrated base-emitter and base-collector bias resistors (R1 = R2 = 10 kΩ). Its internal configuration enables direct TTL/CMOS-compatible switching without external bias components.

It operates in saturation or cutoff modes only - not linear amplification - with guaranteed V_IN(off) ≤ −0.5 V and V_IN(on) ≥ −3 V, supporting robust noise margin in digital control paths where fast turn-on (t_on < 100 ns) and low standby current (I_O(off) ≤ −0.5 μA) are required.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V: Maximum allowable collector-emitter voltage before breakdown; defines safe operating range in 24 V or 36 V rail-switching applications.
I_C max	−50 mA: Absolute maximum continuous collector current; sets upper limit for driving LEDs, relays, or logic inputs.
R1 / R2	10 kΩ ±30%: Matched on-die bias resistors eliminate external component count and reduce PCB footprint in discrete logic gate replacements.
h_FE	30 min @ −5 mA/−5 V: Confirmed DC current gain ensures reliable saturation under defined load conditions without overdrive.
V_CE(sat)	−0.1 V typ @ −10 mA/−0.5 mA: Low saturation voltage minimizes power loss and heat generation in high-duty-cycle switching.
P_D	200 mW: Power dissipation rating at T_A = 25 °C; derates linearly above 25 °C per 625 °C/W thermal resistance.

Pinout & Package

Package: SC-59 - surface-mount, 3-pin plastic package with lead-free matte tin plating, UL 94V-0 flammability rating, and moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Emitter terminal	Connected to positive supply rail in high-side switch configurations; referenced as GND(+) in internal schematic.
2 (Collector)	Collector terminal	Output node carrying switched load current; polarity inverted relative to input due to PNP topology.
3 (Base)	Input node with R1–R2 bias network	Accepts logic-level input; internal resistive divider sets turn-on threshold and provides current limiting to base junction.

Key Features

Feature	Design Value
Integrated R1 = R2 bias network	Eliminates need for two external resistors, reducing BOM count and layout complexity in space-constrained designs.
SC-59 package with 625 °C/W R_θJA	Enables thermal management on standard FR4 boards without heatsinking for ≤200 mW operation at ambient ≤85 °C.
Lead-free/RoHS-compliant construction	Meets global environmental compliance requirements including JEDEC J-STD-020C moisture sensitivity level 1.
V_IN(on) = −1.9 V typ	Ensures compatibility with 3.3 V and 5 V CMOS/TTL outputs while maintaining >1.5 V noise margin against ground bounce.

Applications

LED Driver Circuit

Microcontroller GPIO Expander

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V microcontroller I/O pins with open-drain or weak pull-up capability.

IC Role / Device Role / Timing Role: High-side PNP switch enabling active-low LED control with minimal external components.

Use Value: Eliminates need for discrete base resistor and pull-up; reduces total component count by two per channel.

Use Scenario: Level-shifting and current boosting for legacy 5 V peripherals interfaced to modern 3.3 V MCUs.

IC Role / Device Role / Timing Role: Digital translator providing inverted logic output with defined V_OL ≤ −0.3 V and I_OH ≥ −10 mA.

Use Value: Maintains signal integrity across voltage domains without requiring dedicated level-shifter ICs.

Power Rail Enable Switch

Industrial Sensor Interface

Use Scenario: Enabling/disabling auxiliary 12 V or 24 V subsystems using MCU-controlled enable signals.

IC Role / Device Role / Timing Role: High-side load switch with controlled turn-on delay (<100 ns) and low quiescent current (<0.5 μA off-state).

Use Value: Prevents uncontrolled inrush during power sequencing; supports fail-safe shutdown via logic-high disable.

Use Scenario: Interfacing NPN open-collector sensor outputs (e.g., proximity, limit switches) to 3.3 V FPGA or ASIC inputs.

IC Role / Device Role / Timing Role: Active-pull-up buffer converting sinking outputs into clean CMOS-compatible rising edges.

Use Value: Provides predictable rise time and eliminates floating input states without external pull-ups.

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
DDTA114YKA-7-F	Same R1=R2=10 kΩ, but uses SOT-323 package (smaller footprint, higher R_θJA = 700 °C/W)	Better suited for ultra-dense layouts; lower power handling due to reduced thermal mass	Select when board area is critical and peak I_C ≤ −30 mA
NSV11231T1G	PNP pre-biased, R1=10 kΩ, R2=10 kΩ, but rated for −100 mA I_C and −60 V V_CEO	Supports higher-current loads and wider supply rails; slightly larger SC-70 package	Select when driving >−50 mA loads or operating beyond −50 V

Compared with DDTA114EKA-7-F, DDTA114YKA-7-F trades thermal performance for size, while NSV11231T1G extends voltage/current capability at the cost of footprint - both retain identical bias resistor matching and logic interface behavior.

Availability

DDTA114EKA-7-F is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, and industrial sensor interface applications requiring stable component supply and RoHS-compliant sourcing.

Supply support for DDTA114EKA-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, energy-efficient components for industrial, computing, and consumer markets.

The DDTA series belongs to Diodes' pre-biased transistor product line, engineered specifically for simplifying digital switching and logic-level translation in cost-sensitive, space-constrained PCB designs.

FAQ

What is the function of Pin 3 (Base) in DDTA114EKA-7-F?

Pin 3 is the input terminal connected internally to the base through a 10 kΩ resistor (R1) and to the emitter through another 10 kΩ resistor (R2). It accepts logic-level signals and automatically biases the PNP transistor into saturation or cutoff - no external base resistor is needed.

Can DDTA114EKA-7-F replace a standard PNP transistor like BC807?

Yes, but only in switching applications where its built-in 10 kΩ bias network matches the required drive conditions. Unlike BC807, it cannot be used in linear amplifier configurations due to fixed internal resistors and lack of base access.

What is the maximum operating temperature for continuous use?

The device is rated for junction temperatures from −55 °C to +150 °C. At ambient temperatures up to +85 °C, full 200 mW power dissipation is allowed; above that, derating follows the 625 °C/W thermal resistance curve per the datasheet's Figure 1.

Is DDTA114EKA-7-F compatible with reflow soldering processes?

Yes - it is qualified for lead-free reflow per JEDEC J-STD-020C with moisture sensitivity level 1, meaning it can be stored indefinitely at ≤30 °C/60% RH and subjected to standard Pb-free reflow profiles without baking.

DDTA114EKA-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:: Obsolete

Transistor Type:: PNP - Pre-Biased

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

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

Resistor - Base (R1):: 10 kOhms

Resistor - Emitter Base (R2):: 10 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 30 @ 5mA, 5V

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

Current - Collector Cutoff (Max):: 500nA

Frequency - Transition:: 250 MHz

Power - Max:: 200 mW

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-59-3

DDTA114EKA-7-F FAQ

1.How can I place an order for DDTA114EKA-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for DDTA114EKA-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 DDTA114EKA-7-F reliable?

The price and inventory of DDTA114EKA-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 DDTA114EKA-7-F is usually 5 days.

3.What payment methods are accepted for DDTA114EKA-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA114EKA-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DDTA114EKA-7-F?

DDTA114EKA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DDTA114EKA-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 DDTA114EKA-7-F?

For technical support, including DDTA114EKA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA114EKA-7-F requirements.

6.How does Aetrix verify that DDTA114EKA-7-F is sourced from the original manufacturer or authorized distributors?

All DDTA114EKA-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 DDTA114EKA-7-F meets industry standards.

7.What is the process for return or replacement of DDTA114EKA-7-F?

All DDTA114EKA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA114EKA-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 DDTA114EKA-7-F part is unused and in its original packaging.

Return procedure for DDTA114EKA-7-F:

1.Submit a request within 90 days.

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

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