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

Diodes Incorporated DDTA144GCA-7

Name: DDTA144GCA-7
Brand: Diodes Incorporated
SKU: DDTA144GCA-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DDTA144GCA-7

Manufacturer:: Diodes Incorporated

Category:: Single, Pre-Biased Bipolar Transistors

Package:: -

Datasheet:: DDTA144GCA-7.pdf

Description:: TRANS PREBIAS PNP 200MW SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:1,818

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Product details

Overview

DDTA144GCA-7 from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT-23 package, featuring a single built-in 47 kΩ bias resistor (R2 only), −50 V V_CEO, −100 mA I_C, and h_FE of 68 at −5 mA/−5 V, used for discrete logic-level switching in automotive body control modules.

For engineers reviewing the DDTA144GCA-7 datasheet, DDTA144GCA-7 pinout, DDTA144GCA-7 application, or DDTA144GCA-7 equivalent, key selection criteria include verified R2-only bias topology, AEC-Q101 qualification, SOT-23 thermal derating curve compliance, and confirmed h_FE and V_CE(sat) values under production-relevant test conditions.

Technical Context

This device implements a monolithic PNP bipolar junction transistor with an integrated 47 kΩ base-emitter pull-up resistor (R2), eliminating external bias components. It operates with V_CEO = −50 V, I_C = −100 mA max, and exhibits V_CE(sat) ≤ −0.3 V at I_C = −10 mA / I_B = −0.5 mA.

The R2-only configuration provides fixed-current sourcing capability without base drive complexity. Its AEC-Q101 qualification confirms suitability for automotive ambient temperature range (−55 °C to +150 °C) and humidity robustness per J-STD-020D Level 1 moisture sensitivity.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Maximum allowable collector-emitter voltage before breakdown; defines safe operating voltage headroom in 12 V/24 V automotive supply rails.
I_C (max)	−100 mA - Continuous collector current limit; supports LED driver or relay coil switching up to ~100 mA load.
h_FE	68 (min) at −5 mA/−5 V - Confirmed DC current gain; ensures reliable saturation with low base drive current in digital interface circuits.
R2	47 kΩ ±30% - Integrated base-emitter bias resistor; eliminates need for external resistor and reduces PCB footprint by one component.
V_CE(sat)	≤ −0.3 V at −10 mA/−0.5 mA - Low saturation voltage enables minimal power loss (<3 mW) during active switching in battery-sensitive systems.
T_J Range	−55 °C to +150 °C - Full automotive-grade junction temperature range; validated for under-hood and cabin control unit deployment.

Pinout & Package

Package: SOT-23 surface-mount plastic case (UL 94V-0 rated), 0.008 g weight, moisture sensitivity Level 1, lead-free matte tin plating on Alloy 42 leadframe.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current source terminal; connects to positive rail in high-side switch configurations.
2 (Base)	B	Control input node tied internally to R2; accepts TTL/CMOS-compatible logic-low signal to enable conduction.
3 (Collector)	C	Output terminal; sinks load current to ground when biased; requires external load connection between V_CC and collector.

Key Features

Feature	Design Value
R2-only internal bias network	Single 47 kΩ resistor between base and emitter; enables direct logic-level control without external biasing components.
AEC-Q101 qualification	Validated for automotive reliability including temperature cycling, HAST, and mechanical shock; supports Tier-1 BOM inclusion.
SOT-23 footprint compatibility	Standardized 3-pin outline (2.3–2.5 mm × 1.2–1.4 mm); allows drop-in replacement in existing layouts using industry-standard pick-and-place equipment.
Green RoHS compliance	Lead-, halogen-, and antimony-free construction per EU Directive 2011/65/EU; meets IPC-J-STD-609A Class 1 marking requirements.

Applications

Automotive Door Module Switching

Industrial PLC Input Buffer

Use Scenario: Controlling window lift motor enable signals and mirror fold/unfold actuators in door control units.

IC Role / Device Role / Timing Role: PNP pre-biased switch providing high-side current sourcing to activate 12 V solenoid loads.

Use Value: Eliminates discrete base resistor, reducing BOM count and layout area while maintaining −50 V blocking capability for load dump transients.

Use Scenario: Level-shifting and isolating 24 V DC field inputs to 3.3 V/5 V microcontroller GPIOs in programmable logic controllers.

IC Role / Device Role / Timing Role: Digital input buffer with built-in pull-up; converts industrial voltage thresholds into clean logic states.

Use Value: Ensures stable logic interpretation across wide temperature ranges (−40 °C to +85 °C ambient) with no external bias components required.

LED Status Indicator Driver

USB Port Power Switch Control

Use Scenario: Driving multi-color status LEDs on embedded system front panels where space and component count are constrained.

IC Role / Device Role / Timing Role: Constant-current switch enabling/disabling LED strings via MCU GPIO.

Use Value: Delivers consistent brightness at −10 mA with V_CE(sat) ≤ −0.3 V, minimizing heat generation in sealed enclosures.

Use Scenario: Enabling/disabling VBUS power to downstream USB peripherals in host controllers with strict inrush current limits.

IC Role / Device Role / Timing Role: High-side load switch controlling 5 V rail delivery with fast turn-on/turn-off response.

Use Value: Supports <1 µs propagation delay (derived from f_T = 250 MHz) and handles transient overvoltage events up to −50 V.

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
DDTA144WCA-7-F	Same R2 = 47 kΩ, but includes both R1 and R2 bias resistors (dual-resistor topology).	Supports higher base current tolerance and improved noise immunity in EMI-prone environments.	Select when circuit requires adjustable base current or enhanced stability against stray coupling.
NSV144GUT1G	Identical R2 = 47 kΩ, same SOT-23 package, but h_FE min = 60 (vs. 68) and V_CE(sat) max = −0.4 V (vs. −0.3 V).	Marginally lower gain and higher saturation loss; suitable where tighter V_CE(sat) tolerance is not critical.	Select when cost optimization is prioritized and design margin accommodates −0.1 V higher V_CE(sat).

Compared with DDTA144GCA-7, DDTA144WCA-7-F adds base-to-collector resistance for improved linearity, while NSV144GUT1G trades 8 points of h_FE and 0.1 V higher V_CE(sat) for broader distributor availability-both require validation of R2-only vs. dual-resistor functional impact in target schematics.

Availability

DDTA144GCA-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial I/O modules, and consumer appliance control panels requiring stable component supply and AEC-Q101-compliant discrete switching.

Supply support for DDTA144GCA-7 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 centers across Asia and manufacturing in Taiwan and China.

This part belongs to the DDTA R2-Only Series, designed specifically for simplified, space-constrained PNP switching in automotive and industrial control applications where single-resistor biasing reduces design complexity and improves assembly yield.

FAQ

What is the exact value and tolerance of the internal bias resistor R2 in DDTA144GCA-7?

The internal R2 resistor is 47 kΩ with a tolerance of ±30%, as specified in the Electrical Characteristics table on page 2 of DS30336 Rev. 7-2. This value is confirmed across all production lots and is measured under standard test conditions (25 °C, V_EB = −4 V). No R1 resistor is present-this is strictly an R2-only configuration.

Does DDTA144GCA-7 support operation at 125 °C junction temperature?

Yes-its specified operating junction temperature range is −55 °C to +150 °C, and it is qualified per AEC-Q101 for automotive use. At T_J = 125 °C, derated power dissipation is 100 mW (per Fig. 1 derating curve), and h_FE remains functional though reduced versus room-temperature values; full parametric validation is documented in the AEC-Q101 stress report.

Can DDTA144GCA-7 be used as a direct replacement for a standard PNP BJT like BC807-25?

No-it is not a direct replacement due to its integrated R2 bias network. Unlike BC807-25, which requires external base resistors, DDTA144GCA-7 expects logic-level control at the base pin and delivers fixed biasing. Swapping requires schematic revision to remove external resistors and verify V_CE(sat) and gain compatibility at the target operating point.

Is the SOT-23 package of DDTA144GCA-7 compatible with automated optical inspection (AOI) systems?

Yes-the SOT-23 package features standardized pad geometry (C = 2.3–2.5 mm, B = 1.2–1.4 mm), matte tin finish, and clear laser-marked type code (P28) and date code. Its UL 94V-0 mold compound and coplanar leads meet IPC-A-610 Class 2 visual acceptability criteria for AOI-based post-reflow verification.

DDTA144GCA-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: *

Package/Case:: -

Packaging:: Cut Tape (CT)

Product Status:: Active

Transistor Type:: -

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

Voltage - Collector Emitter Breakdown (Max):: -

Resistor - Base (R1):: -

Resistor - Emitter Base (R2):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

Frequency - Transition:: -

Power - Max:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

DDTA144GCA-7 FAQ

1.How can I place an order for DDTA144GCA-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DDTA144GCA-7 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 DDTA144GCA-7 reliable?

The price and inventory of DDTA144GCA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA144GCA-7 is usually 5 days.

3.What payment methods are accepted for DDTA144GCA-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA144GCA-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DDTA144GCA-7?

DDTA144GCA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DDTA144GCA-7 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 DDTA144GCA-7?

For technical support, including DDTA144GCA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA144GCA-7 requirements.

6.How does Aetrix verify that DDTA144GCA-7 is sourced from the original manufacturer or authorized distributors?

All DDTA144GCA-7 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 DDTA144GCA-7 meets industry standards.

7.What is the process for return or replacement of DDTA144GCA-7?

All DDTA144GCA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTA144GCA-7, 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 DDTA144GCA-7 part is unused and in its original packaging.

Return procedure for DDTA144GCA-7:

1.Submit a request within 90 days.

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

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