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Diodes Incorporated DDTA144ECAQ-13-F
- Part No.:
- DDTA144ECAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTA144ECAQ-13-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,760
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Product details
Overview
DDTA144ECAQ-13-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT23 package with integrated bias resistors R1 = R2 = 47 kΩ, −40 V input voltage rating, −30 mA output current capability, and DC current gain (Gl) of 68 at −5 V VCE, used for level-shifting and digital switching in automotive body control modules.
For engineers reviewing the DDTA144ECAQ-13-F datasheet, DDTA144ECAQ-13-F pinout, DDTA144ECAQ-13-F application, or DDTA144ECAQ-13-F equivalent, key selection criteria include input voltage range (−40 V), output saturation voltage (−0.3 V), built-in resistor tolerance (±30%), AEC-Q101 qualification, and SOT23 thermal resistance (625 °C/W).
Technical Context
This device integrates two matched 47 kΩ biasing resistors (R1 = R2) to configure a single-transistor inverter with fixed base biasing, eliminating external components for digital logic interfacing. Its PNP topology enables active-low switching with grounded emitter configuration and collector output.
Designed for automotive-grade reliability, it operates across −55 °C to +150 °C, supports 200 mW power dissipation on FR-4 PCBs, and delivers stable DC current gain (Gl = 68) under −5 V VCE and −5 mA IC conditions per AEC-Q101 test requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Transistor Type | PNP pre-biased small-signal transistor with monolithic R1/R2 integration |
| R1 / R2 Value | 47 kΩ ±30% - sets fixed base current for predictable turn-on threshold |
| VIN(max) | −40 V - supports robust input overvoltage protection in 24 V automotive systems |
| IO(max) | −30 mA - drives LED indicators, relay coils, or logic inputs without external buffering |
| VO(on) | −0.3 V max at −2 mA IO - ensures low saturation loss in high-side switch emulation |
| Gl (DC Current Gain) | 68 min at VCE = −5 V, IC = −5 mA - guarantees reliable switching margin under temperature stress |
| PD | 200 mW - defines maximum continuous power handling on standard FR-4 layout |
Pinout & Package
Package: SOT23 - surface-mount plastic case, 0.008 g weight, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Connected to system ground or low-side reference; forms common node for bias network |
| 2 (Base) | Base terminal | Internally tied to midpoint of R1–R2 divider; accepts input signal for inverting logic operation |
| 3 (Collector) | Collector terminal | Active-low output node; sinks current when biased, compatible with open-collector interfaces |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including body electronics and lighting control |
| Built-in R1 = R2 bias network | Eliminates two external resistors, reducing BOM count and PCB footprint in digital interface circuits |
| Green, halogen-free construction | Meets RoHS 3 (2015/863/EU) with Br+Cl <1500 ppm and Sb <1000 ppm |
| SOT23 thermal performance | 625 °C/W junction-to-ambient resistance enables operation up to +150 °C ambient |
| Input voltage range | −40 V rating allows direct connection to 24 V supply rails with margin for transients |
Applications
| Automotive Door Module Switch Interface | Industrial PLC Input Conditioning |
|---|---|
Use Scenario: Detecting mechanical switch closures in vehicle door latch assemblies with 24 V supply rails. IC Role / Device Role / Timing Role: PNP inverter providing active-low logic translation and ESD-tolerant input buffering. Use Value: −40 V input rating withstands load-dump transients; integrated bias resistors reduce component count by two per channel. |
Use Scenario: Converting 24 V industrial sensor outputs to 3.3 V/5 V microcontroller-compatible signals. IC Role / Device Role / Timing Role: Level-shifting digital buffer with defined turn-on threshold and sink-current output. Use Value: Gl = 68 ensures noise-immune switching at −5 V VCE; SOT23 footprint enables dense I/O expansion on compact PLC carrier boards. |
| LED Status Indicator Driver | USB Port Overvoltage Protection Enable |
Use Scenario: Driving red/green status LEDs on automotive instrument clusters with shared ground architecture. IC Role / Device Role / Timing Role: Low-saturation PNP switch controlling LED anode current path. Use Value: VO(on) ≤ −0.3 V minimizes power loss and heat generation at 20 mA drive current. |
Use Scenario: Enabling/disabling USB VBUS protection ICs during hot-plug detection in automotive infotainment systems. IC Role / Device Role / Timing Role: Logic-level translator triggering protection IC enable pin with precise voltage thresholds. Use Value: Matched R1/R2 ensures consistent input hysteresis across temperature; AEC-Q101 qualification assures long-term reliability in cyclic thermal environments. |
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 |
|---|---|---|---|
| DDTA144ECA-7-F | Same die, SOT23-3, 3,000-unit tape-and-reel vs. 10,000-unit 13-inch reel; no automotive marking | Standard industrial use only; lacks AEC-Q101 documentation traceability for PPAP submission | Select when automotive qualification is not required and smaller reel size aligns with production volume |
| ADTA144ECAQ-13-F | Direct replacement per Diodes Inc. NRND notice; identical electrical specs, same 47 kΩ bias network and SOT23 package | Identical automotive application scope; updated part number reflects manufacturing transition | Preferred for new designs requiring continued supply; DDTA144ECAQ-13-F is NRND and scheduled for phase-out |
Compared with DDTA144ECAQ-13-F, ADTA144ECAQ-13-F offers guaranteed long-term availability and full AEC-Q101 documentation support, while DDTA144ECA-7-F provides cost-effective sourcing for non-automotive applications where PPAP is unnecessary.
Availability
DDTA144ECAQ-13-F is available at Aetrix Electronics and suitable for automotive body control units, industrial PLC input stages, and LED driver circuits requiring stable component supply under AEC-Q101 compliance.
Supply support for DDTA144ECAQ-13-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 and manufacturing operations across Asia and the Americas.
This device belongs to the DDTA R1=R2 series of pre-biased transistors, engineered specifically for simplified digital interface design in automotive and industrial control systems where space, reliability, and qualification rigor are critical.
FAQ
Is DDTA144ECAQ-13-F pin-compatible with other DDTA-series transistors?
Yes - all DDTA (R1=R2) devices share identical SOT23 pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. This uniformity allows drop-in substitution across the series when bias resistor values and current ratings meet design requirements.
What does "NRND" mean for DDTA144ECAQ-13-F?
"NRND" stands for Not Recommended for New Design. Diodes Incorporated advises using ADTA144ECAQ-13-F instead, though DDTA144ECAQ-13-F remains available for existing production. No electrical or packaging changes exist between the two part numbers.
Can this transistor replace a discrete PNP + two resistors in a 24 V automotive circuit?
Yes - its −40 V input rating, −30 mA output, and integrated 47 kΩ bias network are designed precisely for that purpose. It replicates the function of a PNP transistor with base-emitter and base-collector resistors, reducing layout area and assembly steps.
Does DDTA144ECAQ-13-F support operation at 125 °C ambient temperature?
Yes - its −55 °C to +150 °C operating temperature range and 625 °C/W thermal resistance allow safe operation at 125 °C ambient when power dissipation stays below 100 mW, verified per AEC-Q101 thermal cycling and HTOL testing.
DDTA144ECAQ-13-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):
- 47 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTA144ECAQ-13-F FAQ
1.How can I place an order for DDTA144ECAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA144ECAQ-13-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 DDTA144ECAQ-13-F reliable?
The price and inventory of DDTA144ECAQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA144ECAQ-13-F is usually 5 days.
3.What payment methods are accepted for DDTA144ECAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA144ECAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA144ECAQ-13-F?
DDTA144ECAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA144ECAQ-13-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 DDTA144ECAQ-13-F?
For technical support, including DDTA144ECAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA144ECAQ-13-F requirements.
6.How does Aetrix verify that DDTA144ECAQ-13-F is sourced from the original manufacturer or authorized distributors?
All DDTA144ECAQ-13-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 DDTA144ECAQ-13-F meets industry standards.
7.What is the process for return or replacement of DDTA144ECAQ-13-F?
All DDTA144ECAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA144ECAQ-13-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 DDTA144ECAQ-13-F part is unused and in its original packaging.
Return procedure for DDTA144ECAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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