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Diodes Incorporated DDTC124XUA-7-F
- Part No.:
- DDTC124XUA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
DDTC124XUA-7-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,410
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Product details
Overview
DDTC124XUA-7-F from Diodes Incorporated is a 50V NPN pre-biased transistor in SOT323 package with integrated R1 = 22kΩ and R2 = 47kΩ bias resistors, designed for digital switching in low-power logic interface circuits. It delivers 50mA max output current, 68 minimum DC current gain (hFE), 0.4V typical input threshold voltage, and operates across –55°C to +150°C for automotive and industrial control applications.
For engineers reviewing the DDTC124XUA-7-F datasheet, DDTC124XUA-7-F pinout, DDTC124XUA-7-F application, or DDTC124XUA-7-F equivalent, key selection criteria include verified input voltage range (–10V to +40V), guaranteed VCE(sat) ≤ 0.3V at IC = 2mA, built-in resistor tolerance (±30% R1, ±20% R2/R1 ratio), and AEC-Q101 qualification readiness via Diodes' IATF 16949 manufacturing.
Technical Context
This device integrates an NPN bipolar junction transistor with two monolithically embedded silicon resistors-R1 (22kΩ) connected between base and input, R2 (47kΩ) between base and emitter-to eliminate external bias components. Its epitaxial planar die construction ensures stable gain and thermal performance under transient load conditions.
The SOT323 package enables high-density PCB layout while maintaining 200mW power dissipation and 625°C/W junction-to-ambient thermal resistance on FR4 boards. Input voltage range (–10V to +40V) supports robust noise immunity in 3.3V/5V logic interfacing, and fT = 250MHz enables reliable operation in moderate-speed switching up to ~10MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50V - Maximum collector-emitter voltage before breakdown; supports rail-to-rail switching in 24V industrial systems. |
| IC(max) | 50mA - Absolute maximum continuous collector current; defines upper limit for driving small relays or LEDs. |
| hFE | 68 min @ VCE = 5V, IC = 5mA - Ensures predictable saturation with minimal base drive in logic-level interfaces. |
| VIN(on) | 2.5V typ @ VOUT = 0.3V, IC = 2mA - Confirmed turn-on threshold compatible with 3.3V CMOS outputs. |
| R1 / R2 | 22kΩ / 47kΩ - Fixed internal bias network eliminates 2 external resistors; reduces BOM count and layout area. |
| PD | 200mW - Power dissipation limit at TA = 25°C; requires derating above 25°C per published curve. |
| fT | 250MHz - Gain-bandwidth product confirms suitability for fast edge-rate digital signals up to 10MHz. |
Pinout & Package
Package: SOT323 - ultra-small surface-mount plastic package (2.15mm × 2.10mm × 0.95mm), moisture sensitivity level 1, matte tin-plated leads, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal of NPN transistor | Reference node for bias network; connects to system ground or low-side return path. |
| 2 (Base) | Transistor base node | Internally tied to R1 and R2; no external access-biasing fully integrated. |
| 3 (Collector) | Collector terminal of NPN transistor | Switched output node; sinks current from load to emitter when driven high at Pin 1 input. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1/R2 bias network | 22kΩ/47kΩ resistor pair eliminates need for two external bias resistors, reducing component count and board space. |
| Automated assembly compatibility | SOT323 footprint and lead finish meet MIL-STD-202 solderability requirements for high-yield reflow processes. |
| Green, RoHS-compliant construction | Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb); fully compliant with EU RoHS 3 (2015/863/EU). |
| High-temperature operation | Rated for –55°C to +150°C junction temperature; validated for under-hood automotive and industrial environments. |
| Low-input-current switching | Typical IIN = 0.36mA at VIN = 5V - minimizes loading on microcontroller GPIOs and battery-powered logic sources. |
Applications
| Logic-Level Signal Translation | Microcontroller GPIO Driver |
|---|---|
|
Use Scenario: Converting 3.3V CMOS output to switch a 12V solenoid in an industrial PLC module. IC Role / Device Role / Timing Role: NPN pre-biased switch providing level-shifted current sinking with no external bias components. Use Value: Eliminates two discrete resistors and associated layout area; ensures consistent turn-on at 2.5V input threshold. |
Use Scenario: Driving LED status indicators from low-drive-strength MCU pins in medical handheld devices. IC Role / Device Role / Timing Role: Digital switch enabling direct connection between 3.3V GPIO and LED anode/cathode paths. Use Value: Reduces I/O loading to 0.36mA typical input current, preserving MCU output voltage margin and battery life. |
| Automotive Body Control Module | IoT Sensor Interface Circuit |
|
Use Scenario: Controlling window motor relay coils in AEC-Q101-ready body electronics modules. IC Role / Device Role / Timing Role: Robust NPN switch handling intermittent 50mA loads across –40°C to +125°C ambient. Use Value: Qualified for automotive change control; operates reliably at 150°C junction temperature with full parameter guarantees. |
Use Scenario: Isolating analog sensor outputs from digital host processors in smart building nodes. IC Role / Device Role / Timing Role: Low-leakage (0.5μA ICBO) switch enabling clean signal routing without cross-talk. Use Value: Maintains <0.3V VCE(sat) at 2mA, ensuring minimal voltage drop in precision analog signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDTA124XUA-7-F | PNP complement with identical R1/R2 values (22kΩ/47kΩ), same SOT323 package, but inverted polarity. | Required where high-side switching or inverted logic control is needed instead of low-side sink. | Select when sourcing current from VCC is required; not interchangeable without circuit redesign. |
| NSVD124XUAXV6T1G | Same R1/R2 (22kΩ/47kΩ), but rated for 60V VCEO, higher PD (300mW), and tighter R1 tolerance (±20%). | Better suited for 48V telecom or higher-voltage industrial rails where margin beyond 50V is critical. | Choose for enhanced voltage headroom and tighter resistor matching; slightly larger footprint (SOT-523). |
Compared with DDTC124XUA-7-F, DDTA124XUA-7-F provides complementary PNP functionality for high-side use cases, while NSVD124XUAXV6T1G offers extended voltage rating and improved resistor tolerance at the cost of different package and sourcing channel.
Availability
DDTC124XUA-7-F is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics, and IoT sensor interface circuits requiring stable component supply, long-term lifecycle support, and AEC-Q101-aligned manufacturing traceability.
Supply support for DDTC124XUA-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 Diodes' DDTC pre-biased transistor family, engineered specifically to replace discrete BJT + resistor combinations in space-constrained digital interface and logic-level translation applications.
FAQ
What is the absolute maximum input voltage for DDTC124XUA-7-F?
The absolute maximum input voltage (VIN) is –10V to +40V, measured between Pin 1 (input) and Pin 2 (emitter). This rating ensures safe operation during ESD transients and logic overshoot in 3.3V/5V systems, and is validated per JEDEC JESD78 latch-up testing.
Does DDTC124XUA-7-F require external bias resistors?
No. The device integrates R1 = 22kΩ and R2 = 47kΩ monolithic silicon resistors internally. No external bias components are needed-only three connections (input, output, ground) are required for basic switching operation.
Is DDTC124XUA-7-F qualified for automotive applications?
While not pre-certified to AEC-Q101 in this specific reel lot, the DDTC124XUA-7-F is manufactured in Diodes' IATF 16949-certified facilities and supports PPAP documentation. Customers may request AEC-Q101 qualification testing through Diodes' automotive program for production release.
What is the thermal resistance (RθJA) of DDTC124XUA-7-F on a standard FR4 board?
RθJA is 625°C/W when mounted on a standard FR4 PCB using Diodes' recommended minimum pad layout (C = 0.65mm, G = 1.30mm, X = 0.47mm, Y = 0.60mm, Y1 = 2.50mm). Derating begins at 25°C ambient, reaching zero power at 150°C case temperature.
DDTC124XUA-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 22 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 68 @ 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:
- SOT-323
DDTC124XUA-7-F FAQ
1.How can I place an order for DDTC124XUA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC124XUA-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 DDTC124XUA-7-F reliable?
The price and inventory of DDTC124XUA-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 DDTC124XUA-7-F is usually 5 days.
3.What payment methods are accepted for DDTC124XUA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC124XUA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC124XUA-7-F?
DDTC124XUA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC124XUA-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 DDTC124XUA-7-F?
For technical support, including DDTC124XUA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC124XUA-7-F requirements.
6.How does Aetrix verify that DDTC124XUA-7-F is sourced from the original manufacturer or authorized distributors?
All DDTC124XUA-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 DDTC124XUA-7-F meets industry standards.
7.What is the process for return or replacement of DDTC124XUA-7-F?
All DDTC124XUA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC124XUA-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 DDTC124XUA-7-F part is unused and in its original packaging.
Return procedure for DDTC124XUA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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