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Diodes Incorporated DDTA144ECA-7-F
- Part No.:
- DDTA144ECA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTA144ECA-7-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,597
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Product details
Overview
DDTA144ECA-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT23 package with integrated bias resistors R1 = R2 = 47 kΩ, −50 V VCEO, −30 mA IC(max), −0.3 V VCE(sat) at −2 mA, and 68× DC current gain (hFE) at −5 mA. It serves as an automotive-grade logic-level switch in low-power digital interface circuits.
For engineers reviewing the DDTA144ECA-7-F datasheet, DDTA144ECA-7-F pinout, DDTA144ECA-7-F application, or DDTA144ECA-7-F equivalent, key selection criteria include input resistor tolerance (±30%), guaranteed AEC-Q101 qualification, −40 V input voltage rating, and verified performance across −55°C to +150°C ambient range.
Technical Context
This device integrates two matched 47 kΩ bias resistors (R1 = R2) to configure a single-PNP transistor for direct logic-level drive without external base resistors. Its internal topology implements a grounded-emitter inverter with fixed current-limiting and saturation control.
Designed for high-reliability automotive applications, it delivers stable switching behavior under transient load conditions, supports rail-to-rail input swing from +10 V to −40 V, and maintains <0.5 µA leakage (IO(off)) at −50 V VCC and 0 V input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - Maximum collector-emitter blocking voltage before breakdown; enables use in 36 V automotive systems with margin. |
| IC(max) | −30 mA - Absolute maximum continuous collector current; defines upper limit for load switching capability. |
| R1 = R2 | 47 kΩ ±30% - Matched on-die bias resistors eliminate external components and ensure consistent turn-on threshold. |
| hFE | 68 - DC current gain at VCE = −5 V, IC = −5 mA; ensures reliable saturation with low base drive current. |
| VCE(sat) | −0.3 V at IC = −2 mA, IB ≈ −0.04 mA - Low saturation voltage minimizes power loss in active-switching mode. |
| PD | 200 mW - Power dissipation limit on FR-4 PCB with minimum pad layout; constrains thermal design in compact layouts. |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1, weight ≈ 0.008 g, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current source terminal | Connected to supply rail (VCC); provides reference for bias network and output current sourcing. |
| 2 (Base) | Input node | Accepts logic-level signal; internally connected to both R1 and R2; sets transistor conduction state. |
| 3 (Collector) | Output node | Delivers switched current to load; referenced to ground in standard inverter configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = R2 bias network | 47 kΩ matched resistors reduce BOM count and eliminate external component placement error. |
| AEC-Q101 qualification | Qualified for automotive applications including engine control modules and body electronics. |
| Green, halogen-free construction | Meets RoHS 3 (2015/863/EU) with Br+Cl <1500 ppm and Sb <1000 ppm; supports eco-compliant manufacturing. |
| Low input leakage | <0.5 µA IO(off) at VCC = −50 V ensures minimal standby current in always-on circuits. |
Applications
| Automotive Door Module | Industrial PLC Input Stage |
|---|---|
Use Scenario: Level-shifting and inversion of 12 V CAN/LIN bus wake-up signals into 3.3 V microcontroller GPIO inputs. IC Role / Device Role / Timing Role: PNP inverter stage providing active-low signal translation with built-in bias stability. Use Value: Eliminates discrete resistor pair; maintains <1 µA quiescent current during sleep mode per channel. |
Use Scenario: Isolating 24 V DC field sensor outputs before feeding into FPGA-based logic controllers. IC Role / Device Role / Timing Role: Digital input buffer with programmable hysteresis via external feedback (not required here due to fixed R1/R2). Use Value: Delivers −0.3 V VCE(sat) at −2 mA, enabling >99% logic-high detection margin at 3.3 V LVTTL thresholds. |
| LED Driver for Dashboard Backlight | USB-C Port Protection Logic |
Use Scenario: Driving low-current status LEDs (≤5 mA) from MCU GPIO pins in instrument cluster assemblies. IC Role / Device Role / Timing Role: Current-limited sink driver with predictable turn-on delay (<50 ns typical fT = 250 MHz). Use Value: Achieves <100 ns propagation delay with no external base resistor tuning needed. |
Use Scenario: Enabling/disabling USB-C CC line pull-up resistors based on port orientation detection logic. IC Role / Device Role / Timing Role: Bidirectional logic gate interface with rail-to-rail input compliance (+10 V to −40 V). Use Value: Supports −40 V fault tolerance on CC lines during hot-plug transients without latch-up. |
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 |
|---|---|---|---|
| DDTA124ECA-7-F | R1 = R2 = 22 kΩ; higher input current (−0.36 mA at −5 V); lower hFE (56×) | Better suited for faster switching where base drive current >0.3 mA is available | Select when driving heavier loads (>5 mA) with stronger MCU GPIO or when tighter VIN(on) tolerance is required. |
| DDTA115ECA-7-F | R1 = R2 = 100 kΩ; lower input current (−0.15 mA at −5 V); higher hFE (82×) | Optimized for ultra-low-power wake-up circuits with sub-1 µA standby budgets | Prefer for battery-backed modules requiring <0.2 µA total input leakage across multiple channels. |
Compared with DDTA124ECA-7-F and DDTA115ECA-7-F, DDTA144ECA-7-F strikes a balance between input sensitivity and saturation robustness-ideal for 12 V automotive logic interfaces where −2 mA load current and −40 V fault immunity are primary requirements.
Availability
DDTA144ECA-7-F is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC input stages, and LED backlight drivers requiring stable component supply, AEC-Q101 compliance, and green manufacturing credentials.
Supply support for DDTA144ECA-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 the DDTA (R1 = R2 Series) CA family-engineered specifically for automotive and industrial logic interface applications requiring integrated biasing, high reliability, and simplified PCB layout.
FAQ
What is the maximum allowable input voltage for DDTA144ECA-7-F?
The absolute maximum input voltage (VIN) is specified from −40 V to +10 V relative to the emitter (pin 1). This rating applies under open-circuit output conditions and ensures safe operation during load dump or reverse-battery events in automotive environments.
Can DDTA144ECA-7-F be used in a common-emitter amplifier configuration?
No-it is optimized as a saturated switch, not a linear amplifier. The integrated R1/R2 network fixes the base bias point, and its hFE and fT characteristics are characterized only under switching conditions (VCE ≤ −0.3 V). Linear gain is neither specified nor guaranteed.
Is the SOT23 footprint compatible with JEDEC MO-203AA standards?
Yes-the mechanical dimensions (e.g., lead pitch = 0.95 mm, body width = 1.3–1.4 mm, length = 2.3–2.5 mm) conform to JEDEC MO-203AA for SOT23. Recommended pad layout matches Diodes' published SOT23 land pattern with 0.8 mm × 2.0 mm solder pads.
Does DDTA144ECA-7-F require external ESD protection?
No additional ESD protection is required for typical board-level handling. The device meets HBM Class 2 (≥2 kV) per AEC-Q101, and its internal structure includes junction-level protection sufficient for assembly and functional testing in controlled environments.
DDTA144ECA-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):
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTA144ECA-7-F FAQ
1.How can I place an order for DDTA144ECA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA144ECA-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 DDTA144ECA-7-F reliable?
The price and inventory of DDTA144ECA-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 DDTA144ECA-7-F is usually 5 days.
3.What payment methods are accepted for DDTA144ECA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA144ECA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA144ECA-7-F?
DDTA144ECA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA144ECA-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 DDTA144ECA-7-F?
For technical support, including DDTA144ECA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA144ECA-7-F requirements.
6.How does Aetrix verify that DDTA144ECA-7-F is sourced from the original manufacturer or authorized distributors?
All DDTA144ECA-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 DDTA144ECA-7-F meets industry standards.
7.What is the process for return or replacement of DDTA144ECA-7-F?
All DDTA144ECA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA144ECA-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 DDTA144ECA-7-F part is unused and in its original packaging.
Return procedure for DDTA144ECA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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