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

Diodes Incorporated DDTA115GKA-7-F

Name: DDTA115GKA-7-F
Brand: Diodes Incorporated
SKU: DDTA115GKA-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DDTA115GKA-7-F

Manufacturer:: Diodes Incorporated

Category:: Single, Pre-Biased Bipolar Transistors

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

Datasheet:: DDTA115GKA-7-F.pdf

Description:: TRANS PREBIAS PNP 50V SC59-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DDTA115GKA-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor with built-in 100 kΩ bias resistor (R2 only), SC-59 package, −50 V V_CEO, −100 mA I_C, and h_FE = 82 @ −5 mA/−5 V, used in discrete logic-level switching and load control circuits.

For engineers reviewing the DDTA115GKA-7-F datasheet, DDTA115GKA-7-F pinout, DDTA115GKA-7-F application, or DDTA115GKA-7-F equivalent, this part serves as a single-resistor-biased PNP switch optimized for space-constrained digital interface and level-shifting functions where base drive simplification is required.

Technical Context

This device implements an epitaxial planar PNP bipolar junction transistor with a monolithically integrated 100 kΩ pull-up bias resistor (R2) connected between base and emitter-no external base resistor needed. It operates in saturation mode with V_CE(sat) ≤ −0.3 V at −10 mA/−0.5 mA drive.

The SC-59 surface-mount package supports automated assembly and thermal dissipation up to 200 mW at T_A = 25°C, with R_θJA = 625°C/W on FR4 board. Its −55°C to +150°C operating range suits industrial and automotive ambient environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - maximum allowable collector-emitter voltage before breakdown; enables use in 24 V and 36 V rail switching
I_C (max)	−100 mA - continuous collector current rating; supports medium-current loads like LED drivers or relay coils
h_FE	82 @ −5 mA/−5 V - DC current gain sufficient for reliable saturation with minimal base drive overhead
R2	100 kΩ ±30% - internal base-emitter bias resistor eliminates external component count in simple switch designs
P_D	200 mW - power dissipation limit at T_A = 25°C; defines safe operating area under typical digital switching duty cycles
V_CE(sat)	≤ −0.3 V @ −10 mA/−0.5 mA - low saturation voltage reduces conduction loss and self-heating in active switching

Pinout & Package

Package: SC-59 (SOT-23 variant), 3-terminal surface-mount plastic case, UL 94V-0 rated, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current sink node; connects to system ground or low-side return path in high-side switch configuration
2 (Base)	B	Control input tied internally to R2; accepts TTL/CMOS-compatible logic-high to turn off, logic-low to turn on
3 (Collector)	C	Switched output node; connects to load supply rail (e.g., +V_CC) in high-side driver topology

Key Features

Feature	Design Value
Integrated R2 bias resistor	100 kΩ ±30% - eliminates need for external base resistor, reducing BOM count and PCB footprint
Lead-free / RoHS-compliant	Matt tin-plated copper leadframe - meets global environmental compliance without sacrificing solderability
Epitaxial planar die construction	Stable h_FE and low leakage across temperature - ensures consistent switching behavior from −55°C to +150°C
SC-59 package	0.008 g mass, 2.7–3.0 mm length - compatible with standard SMT pick-and-place and reflow profiles

Applications

LED Driver Circuit

Microcontroller GPIO Interface

Use Scenario: Driving a 20 mA indicator LED from a 3.3 V microcontroller output pin.

IC Role / Device Role / Timing Role: High-side PNP switch enabling active-low control of LED anode connection to V_CC.

Use Value: Internal 100 kΩ R2 allows direct GPIO connection without external pull-up; V_CE(sat) ≤ −0.3 V minimizes LED forward voltage drop impact.

Use Scenario: Level-shifting a 1.8 V logic signal to enable/disable a 5 V peripheral.

IC Role / Device Role / Timing Role: Digital translator configured as inverting buffer with defined threshold and rail-to-rail output swing.

Use Value: h_FE = 82 ensures full saturation at low base current; −50 V V_CEO provides margin against transient overshoot.

Relay Coil Driver

Power Rail Enable Switch

Use Scenario: Controlling a 48 Ω, 100 mA relay coil powered from 5 V supply.

IC Role / Device Role / Timing Role: Medium-current PNP switch placed between coil and V_CC, activated by grounded control line.

Use Value: −100 mA I_C rating matches coil requirement; R2 integration avoids separate base bias network.

Use Scenario: Enabling/disabling a 3.3 V subsystem rail using a system controller's open-drain output.

IC Role / Device Role / Timing Role: High-side power switch with controlled turn-on/turn-off via base pull-down.

Use Value: Low V_CE(sat) limits voltage drop across switch; SC-59 footprint fits tight regulator layout zones.

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
DDTA115EKA-7-F	Same die, different marking code; identical electrical specs and R2 value	No functional difference; alternate date-code or lot-marking variant	Select when matching legacy board documentation referencing EKA suffix
NSV11500MT1G	PNP pre-biased, R2 = 100 kΩ, but h_FE = 60–120 (wider min/max spread); V_CEO = −50 V, same SC-59	Higher h_FE variation may require design margining for worst-case saturation	Prefer DDTA115GKA-7-F where guaranteed h_FE ≥ 82 simplifies drive design

Compared with DDTA115EKA-7-F, this part offers identical performance with updated traceability coding; versus NSV11500MT1G, it delivers tighter h_FE control and lower V_CE(sat) uncertainty-critical for deterministic low-power switching.

Availability

DDTA115GKA-7-F is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfaces, and relay coil drivers requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for DDTA115GKA-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

This part belongs to the DDTA R2-only series of pre-biased transistors, designed specifically to reduce component count and improve reliability in digital interface and load-switching applications.

FAQ

What is the function of the internal R2 resistor?

The internal 100 kΩ resistor (R2) connects between base and emitter, providing fixed base bias to configure the transistor as a digital switch. It eliminates the need for an external pull-up resistor, enabling direct connection to open-drain or low-voltage logic outputs while ensuring predictable turn-on/turn-off thresholds.

Can DDTA115GKA-7-F replace a standard PNP transistor like BC807?

No-it cannot directly replace a bare PNP transistor such as BC807 because it lacks independent base control. The integrated R2 forces a specific bias configuration. Use only where the circuit relies on single-resistor pre-biasing; otherwise, external bias networks must be removed or redesigned.

Is this device suitable for linear amplification?

No. DDTA115GKA-7-F is characterized and qualified exclusively for switching operation. Its h_FE tolerance, R2 integration, and saturation-focused V_CE(sat) specification make it unsuitable for analog amplification where precise bias point control and linearity are required.

What is the meaning of the "GKA" suffix in the part number?

The "GKA" suffix denotes the specific R2 value (100 kΩ) and product revision within the DDTA R2-only series. It distinguishes this variant from DDTA114GKA (10 kΩ), DDTA124GKA (22 kΩ), and DDTA144GKA (47 kΩ), ensuring correct identification during procurement and assembly.

DDTA115GKA-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):: -

Resistor - Emitter Base (R2):: 100 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 82 @ 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:: SC-59-3

DDTA115GKA-7-F FAQ

1.How can I place an order for DDTA115GKA-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for DDTA115GKA-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 DDTA115GKA-7-F reliable?

The price and inventory of DDTA115GKA-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 DDTA115GKA-7-F is usually 5 days.

3.What payment methods are accepted for DDTA115GKA-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA115GKA-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DDTA115GKA-7-F?

DDTA115GKA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DDTA115GKA-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 DDTA115GKA-7-F?

For technical support, including DDTA115GKA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA115GKA-7-F requirements.

6.How does Aetrix verify that DDTA115GKA-7-F is sourced from the original manufacturer or authorized distributors?

All DDTA115GKA-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 DDTA115GKA-7-F meets industry standards.

7.What is the process for return or replacement of DDTA115GKA-7-F?

All DDTA115GKA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA115GKA-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 DDTA115GKA-7-F part is unused and in its original packaging.

Return procedure for DDTA115GKA-7-F:

1.Submit a request within 90 days.

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

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