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

Diodes Incorporated DDTC142JE-7

Name: DDTC142JE-7
Brand: Diodes Incorporated
SKU: DDTC142JE-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DDTC142JE-7

Manufacturer:: Diodes Incorporated

Category:: Single, Pre-Biased Bipolar Transistors

Package:: -

Datasheet:: DDTC142JE-7.pdf

Description:: TRANS PREBIAS NPN 150MW SOT523

Quantity:: RFQ Add To RFQ list

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Inventory:3,126

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Product details

Overview

DDTC142JE-7 from Diodes Incorporated is an NPN pre-biased transistor in SOT523 package, featuring integrated 0.47kΩ and 10kΩ bias resistors, 50V V_CC, 100mA I_C, and AEC-Q101 qualification for automotive signal switching applications such as LED driver control and microcontroller I/O interfacing.

For engineers reviewing the DDTC142JE-7 datasheet, DDTC142JE-7 pinout, DDTC142JE-7 application, or DDTC142JE-7 equivalent, key selection criteria include input voltage range (–5V to +6V), output saturation voltage (≤0.3V at I_C=5mA/I_B=0.25mA), DC current gain (G_I = 56), thermal resistance (625°C/W), and RoHS-compliant green packaging.

Technical Context

This device integrates two precision biasing resistors (R1 = 0.47kΩ, R2 = 10kΩ) directly into an epitaxial planar NPN transistor die, eliminating external base resistor networks. It operates with V_CE(SAT) ≤ 0.3V at I_C/I_B = 5mA/0.25mA and supports input logic levels from –5V to +6V under 5V supply conditions.

The transistor delivers G_I = 56 at I_O = 10mA and f_T = 200MHz (V_CE = 10V, I_E = 5mA), enabling reliable digital switching up to medium-frequency control signals while maintaining AEC-Q101 reliability for automotive ambient temperature ranges (–55°C to +150°C).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Max	50V - supports rail-to-rail operation in 24V automotive systems with margin
I_C Max	100mA - sufficient for driving small relays, LEDs, or logic-level MOSFET gates
R1 / R2	0.47kΩ / 10kΩ - fixed internal bias network eliminates 2 external resistors
V_CE(SAT)	≤0.3V @ I_C/I_B = 5mA/0.25mA - minimizes power loss in saturated switching
G_I	56 - defined current gain ratio (I_O/I_L) for predictable digital on/off behavior
P_D	150mW @ T_A = 25°C - requires derating above 25°C per 625°C/W thermal resistance
AEC-Q101	Qualified - validated for automotive-grade reliability including temperature cycling and HTRB

Pinout & Package

Package: SOT523 - ultra-small surface-mount plastic case (1.60 × 1.60 × 0.75 mm), moisture sensitivity level 1, matte tin terminals, UL 94V-0 rated.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Emitter terminal	Reference node for bias current return path; connected to ground in common-emitter configuration
2 (Base)	Input node with internal R1/R2 divider	Accepts logic-level input; internal 0.47kΩ–10kΩ network sets base current without external components
3 (Collector)	Output current sink	Drives load to V_CC; capable of sinking up to 100mA with ≤0.3V saturation drop

Key Features

Feature	Design Value
Integrated bias resistors	Eliminates 2 external SMT resistors, reducing BOM count and PCB area in space-constrained designs
AEC-Q101 qualification	Validated for automotive under-hood environments including thermal shock, humidity, and lifetime reliability testing
SOT523 footprint	0.002g weight and 1.6mm × 1.6mm outline enable use in compact modules like body control units and sensor nodes
Green RoHS compliance	Halogen- and antimony-free compound (<900ppm Br/Cl, <1000ppm Sb) meets global environmental regulations

Applications

Automotive LED Tail Light Control

Microcontroller GPIO Expansion

Use Scenario: Driving individual LED strings in rear lighting modules using 3.3V/5V MCU outputs.

IC Role / Device Role / Timing Role: NPN switch translating low-voltage logic to 12V/24V LED current paths.

Use Value: 0.3V V_CE(SAT) reduces heat generation and improves efficiency versus discrete transistor + resistor solutions.

Use Scenario: Expanding limited GPIO count on automotive MCUs to drive multiple peripheral enable lines.

IC Role / Device Role / Timing Role: Digital buffer/signal translator with built-in biasing for clean high-side or low-side switching.

Use Value: Eliminates need for external base resistors, saving 2 passives per channel and improving layout density.

Engine Control Unit Signal Conditioning

Industrial Sensor Interface Board

Use Scenario: Level-shifting and isolation of crankshaft position sensor signals before ADC input.

IC Role / Device Role / Timing Role: Fast-switching interface element with 200MHz f_T supporting pulse-width modulated timing signals.

Use Value: Stable G_I = 56 ensures consistent switching thresholds across temperature, reducing calibration overhead.

Use Scenario: Enabling/disabling analog sensor power rails in factory automation modules.

IC Role / Device Role / Timing Role: Low-power load switch controlled by industrial PLC outputs.

Use Value: 100mA I_C rating and –55°C to +150°C operating range support harsh factory environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DDTC142JE-7-F	Same die, identical R1/R2 values and electrical specs; differs only in tape/reel packaging (3,000 pcs/reel vs. standard).	No functional difference; used interchangeably where reel size or AEC-Q101 marking is required.	Select when AEC-Q101 traceability and full reel procurement are mandatory.
NSV142JXV6T1G	Onsemi part with same R1/R2 (0.47kΩ/10kΩ), but SOT-723 package (smaller footprint) and slightly lower P_D (125mW).	Requires PCB redesign due to different pad layout; suitable only where board space is more critical than power margin.	Choose only if SOT-723 compatibility and sub-1.2mm² area are design priorities over thermal headroom.

Compared with DDTC142JE-7, the -7-F variant adds AEC-Q101 traceability without performance trade-offs, while NSV142JXV6T1G offers smaller size at the cost of 25mW lower power dissipation-making the original optimal for thermally constrained yet automotive-qualified designs.

Availability

DDTC142JE-7 is available at Aetrix Electronics and suitable for automotive lighting control, microcontroller I/O expansion, and engine management signal conditioning requiring stable component supply and long-term lifecycle support.

Supply support for DDTC142JE-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, specializing in high-reliability components for automotive, industrial, and consumer markets.

This part belongs to the DDTC (LO-R1) E series of pre-biased transistors designed specifically for AEC-Q101-compliant automotive signal switching, minimizing external component count in safety-critical subsystems.

FAQ

Is DDTC142JE-7 still in active production?

No-DDTC142JE-7 is marked obsolete in Diodes' official documentation (DS30404 Rev. 8-4, June 2021). However, Aetrix Electronics maintains legacy inventory with full traceability and offers lifecycle management support, including last-time buy planning and cross-reference guidance for qualified replacements.

What is the exact pin configuration for SOT523 package?

The SOT523 package uses a 3-pin top-view layout: Pin 1 = Emitter, Pin 2 = Base (with internal R1/R2 network), Pin 3 = Collector. This matches the schematic diagram in DS30404 Figure "R1 OUT B C E R2" and is confirmed by Diodes' official package outline drawings for SOT523.

Can DDTC142JE-7 replace a standard 2N3904 with external bias resistors?

Yes-DDTC142JE-7 replaces a 2N3904 plus two external base resistors (0.47kΩ and 10kΩ) in common-emitter switching configurations. Its G_I = 56 and V_CE(SAT) ≤ 0.3V match typical 2N3904 performance under equivalent bias conditions, with added benefits of reduced layout area and improved consistency.

Does this part support negative input voltages?

Yes-DDTC142JE-7 specifies VIN = –5V to +6V (per Absolute Maximum Ratings), allowing safe operation with inverted logic signals or transient negative excursions common in automotive CAN/LIN bus environments and inductive load flyback scenarios.

DDTC142JE-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: *

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

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:: -

DDTC142JE-7 FAQ

1.How can I place an order for DDTC142JE-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DDTC142JE-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 DDTC142JE-7 reliable?

The price and inventory of DDTC142JE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC142JE-7 is usually 5 days.

3.What payment methods are accepted for DDTC142JE-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC142JE-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DDTC142JE-7?

DDTC142JE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DDTC142JE-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 DDTC142JE-7?

For technical support, including DDTC142JE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC142JE-7 requirements.

6.How does Aetrix verify that DDTC142JE-7 is sourced from the original manufacturer or authorized distributors?

All DDTC142JE-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 DDTC142JE-7 meets industry standards.

7.What is the process for return or replacement of DDTC142JE-7?

All DDTC142JE-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC142JE-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 DDTC142JE-7 part is unused and in its original packaging.

Return procedure for DDTC142JE-7:

1.Submit a request within 90 days.

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

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