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Diodes Incorporated DDTA124XCA-7-F
- Part No.:
- DDTA124XCA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTA124XCA-7-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,368
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Product details
Overview
DDTA124XCA-7-F from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT23 package, featuring integrated R1=22kΩ and R2=47kΩ bias resistors. It delivers DC current gain (hFE) of 68 at IC = −5mA, VCE = −5V, with VOUT(ON) ≤ −0.3V and IOUT(max) = −50mA. It serves as a compact, surface-mount logic-level switch in automotive body control modules for LED driver enable/disable sequencing.
For engineers reviewing the DDTA124XCA-7-F datasheet, DDTA124XCA-7-F pinout, DDTA124XCA-7-F application, or DDTA124XCA-7-F equivalent, key selection criteria include input voltage threshold (−2.5V @ IOUT = −2mA), output saturation voltage, resistor tolerance (±30% R1, ±20% R2/R1), thermal resistance (625°C/W), and AEC-Q101 qualification status for automotive use.
Technical Context
This device integrates a PNP bipolar junction transistor with two monolithically embedded resistors (R1=22kΩ, R2=47kΩ) on a single epitaxial planar die. Its input stage accepts TTL/CMOS-compatible negative logic signals, while the output stage provides controlled sink current up to −50mA with guaranteed VCE(sat) ≤ −0.3V.
The SOT23 package enables automated placement and reflow soldering, and its −55°C to +150°C operating range supports under-hood automotive environments. The device's fT = 250MHz ensures adequate bandwidth for fast-switching digital interface applications without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50V - Maximum allowable collector-emitter voltage before breakdown; defines safe operation in 24V automotive supply rails with transients. |
| IC(max) | −50mA - Absolute maximum continuous collector current; sets upper limit for driving small solenoids or LED strings. |
| hFE | 68 (min) - DC current gain at −5mA/−5V; ensures reliable switching with low base drive current (IIN = −0.36mA typical). |
| VIN(ON) | −2.5V - Input voltage required to achieve VOUT ≤ −0.3V at IOUT = −2mA; compatible with 3.3V logic high-side pull-down interfaces. |
| R1/R2 | 22kΩ / 47kΩ - Precisely ratioed internal bias network; eliminates need for external resistors and reduces PCB footprint by ~3mm². |
| PD | 200mW - Maximum power dissipation on FR4 board; limits thermal rise to <125°C junction temp at 25°C ambient with standard pad layout. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), UL 94V-0 rated, weight ≈ 0.008g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Input reference node | Connected internally to R1 and R2; serves as common return for bias network and transistor emitter terminal. |
| 2 (Base) | Control input | Internally tied to junction of R1 and R2; accepts logic-level signal to turn on PNP transistor. |
| 3 (Collector) | Output sink node | Provides active-low switched output path to ground; rated for −50mA continuous current and −50V blocking. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias resistors | R1 = 22kΩ ±30%, R2 = 47kΩ ±30%; eliminates two external components and associated layout uncertainty. |
| AEC-Q101 qualified | Qualified for automotive applications per AEC-Q101 Rev H; supports PPAP documentation and IATF 16949 manufacturing. |
| Green RoHS compliance | Fully lead-free, halogen-free (<900ppm Br/Cl, <1000ppm Sb); meets EU RoHS 2015/863/EU and JESD22-A112 standards. |
| High-speed switching | fT = 250MHz; enables clean edge transitions in PWM-driven lighting control up to 100kHz without ringing. |
Applications
| Automotive Interior Lighting Control | Industrial PLC Digital Output Module |
|---|---|
|
Use Scenario: Driving 12V LED strips in door courtesy lights with microcontroller GPIO interfacing. IC Role / Device Role: Logic-level PNP switch enabling high-side current sourcing via external pull-up, with built-in bias network. Use Value: Reduces BOM count by two resistors per channel and ensures consistent turn-on threshold across temperature (−40°C to +125°C). |
Use Scenario: Isolating microcontroller outputs from 24V industrial field devices using optocoupler input stages. IC Role / Device Role: Level-shifting buffer that converts 3.3V logic to −24V sink signal for optocoupler LED anode drive. Use Value: Guarantees VOUT(ON) ≤ −0.3V at −2mA load, ensuring >20mA forward current through standard 1.2V opto-LEDs. |
| USB-C Power Delivery Status Indication | Smart HVAC Actuator Interface |
|
Use Scenario: Controlling bi-color status LEDs indicating USB-C port negotiation state (source/sink). IC Role / Device Role: Dual-channel enable switch for red/green LED pairs, driven by MCU GPIO pins. Use Value: Delivers matched VIN(ON) (−2.5V) and tight hFE distribution (68 min), ensuring uniform brightness across channels. |
Use Scenario: Driving stepper motor phase enable lines in residential HVAC blower assemblies. IC Role / Device Role: Low-power gate driver interface between MCU and external N-channel MOSFET high-side switches. Use Value: Provides −50mA sink capability with <0.3V saturation, minimizing power loss and heat generation in sealed enclosures. |
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 |
|---|---|---|---|
| DDTA123JCA-7-F | R1=2.2kΩ, R2=47kΩ; higher input current (−3.6mA typ), lower VIN(ON) (−1.1V @ −5mA) | Better suited for 1.8V logic interfaces but draws 10× more base current than DDTA124XCA-7-F | Select when driving from ultra-low-voltage MCUs where −2.5V threshold is insufficient. |
| DDTA144WCA-7-F | R1=47kΩ, R2=22kΩ; inverted resistor ratio yields higher input impedance (−0.16mA IIN), VIN(ON) = −4.0V | Requires stronger negative logic swing; unsuitable for 3.3V systems but ideal for −5V rail interfaces | Choose only if system uses dedicated −5V logic supply and minimal base current is critical. |
Compared with DDTA123JCA-7-F and DDTA144WCA-7-F, DDTA124XCA-7-F uniquely balances moderate input drive (−0.36mA), robust −2.5V logic compatibility, and 68× current gain-making it optimal for 3.3V automotive microcontrollers interfacing with 12V loads.
Availability
DDTA124XCA-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, and USB-C power delivery indicator circuits requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for DDTA124XCA-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 centers across Asia and manufacturing in IATF 16949-certified facilities.
This part belongs to Diodes' DDTA pre-biased transistor family, engineered specifically for automotive and industrial digital interface applications where space-constrained, resistorless switching is required.
FAQ
What is the marking code for DDTA124XCA-7-F on the SOT23 package?
The top-side marking for DDTA124XCA-7-F is "P18", followed by a two-character date code (e.g., "MD" for December 2025). This matches Diodes' standardized SOT23 marking scheme per DS30334 Rev. 8–2, and is laser-etched for readability under 20× magnification.
Does DDTA124XCA-7-F require external bias resistors?
No. DDTA124XCA-7-F integrates R1 = 22kΩ and R2 = 47kΩ on-die, eliminating the need for external base biasing components. This reduces PCB area, improves assembly yield, and ensures consistent bias network performance across temperature and process variation.
Is DDTA124XCA-7-F qualified for automotive applications?
Yes. DDTA124XCA-7-F is AEC-Q101 qualified and manufactured in IATF 16949 certified facilities. It supports PPAP documentation and is intended for automotive body electronics, including lighting, HVAC, and infotainment subsystems operating from −40°C to +125°C.
What is the maximum junction temperature and thermal derating behavior?
The absolute maximum junction temperature is +150°C. With RθJA = 625°C/W on FR4 and PD = 200mW, junction temperature rises ~125°C above ambient at full power. Derating begins linearly above +25°C ambient, reaching zero power at +150°C case temperature per JEDEC JESD51-2.
DDTA124XCA-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:
- Active
- Transistor Type:
- PNP - 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 @ 10mA, 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-23-3
DDTA124XCA-7-F FAQ
1.How can I place an order for DDTA124XCA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA124XCA-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 DDTA124XCA-7-F reliable?
The price and inventory of DDTA124XCA-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 DDTA124XCA-7-F is usually 5 days.
3.What payment methods are accepted for DDTA124XCA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA124XCA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA124XCA-7-F?
DDTA124XCA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA124XCA-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 DDTA124XCA-7-F?
For technical support, including DDTA124XCA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA124XCA-7-F requirements.
6.How does Aetrix verify that DDTA124XCA-7-F is sourced from the original manufacturer or authorized distributors?
All DDTA124XCA-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 DDTA124XCA-7-F meets industry standards.
7.What is the process for return or replacement of DDTA124XCA-7-F?
All DDTA124XCA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA124XCA-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 DDTA124XCA-7-F part is unused and in its original packaging.
Return procedure for DDTA124XCA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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