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Nexperia USA Inc. PDTC144EQAZ
- Part No.:
- PDTC144EQAZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
PDTC144EQAZ.pdf
- Description:
- TRANS PREBIAS NPN 50V 0.1A 3DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,440
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Product details
Overview
PDTC144EQAZ from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in a DFN1010D-3 (SOT1215) package, integrating 47 kΩ input and 47 kΩ base-emitter bias resistors. It functions as a digital switch for IC input control and load switching in space-constrained automotive and industrial PCBs, with AEC-Q101 qualification and 0.37 mm profile.
For engineers reviewing the PDTC144EQAZ datasheet, PDTC144EQAZ pinout, PDTC144EQAZ application, or PDTC144EQAZ equivalent, this device serves as a compact, AOI-compatible alternative to BC847-series transistors in low-power digital logic interfacing, level translation, and LED/microcontroller I/O buffering where built-in biasing reduces BOM count and layout complexity.
Technical Context
This NPN RET integrates two precision-matched 47 kΩ resistors-R1 between input and base, R2 between base and emitter-to enable single-resistor drive from microcontroller GPIOs without external bias networks. Its internal transistor exhibits hFE ≥ 80 at IC = 2 mA and VCE = 5 V, supporting reliable saturation at low drive currents.
The DFN1010D-3 package features visible and solderable side pads, enabling automated optical inspection of solder joints and thermal performance up to 440 mW on 4-layer FR4 PCBs. Device operation is validated across −55 °C to +150 °C ambient, with VI(on) ≤ 3.0 V and VI(off) ≥ 1.2 V ensuring robust noise immunity in automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; supports 24 V automotive rail switching with margin. |
| IO | 100 mA - Continuous output current capability; sufficient for driving LEDs, relays, or logic inputs. |
| R1 / R2 | 47 kΩ / 47 kΩ - Matched internal bias resistors eliminate external components and simplify PCB routing. |
| VCE(sat) | ≤150 mV at IC = 10 mA, IB = 0.5 mA - Low saturation voltage minimizes power loss and heat generation. |
| hFE | ≥80 at VCE = 5 V, IC = 2 mA - High DC current gain ensures full saturation with minimal base drive current. |
| Tj(max) | 150 °C - Junction temperature limit enabling operation in under-hood automotive modules. |
| AEC-Q101 | Qualified - Meets stress test requirements for discrete semiconductors in automotive applications. |
Pinout & Package
DFN1010D-3 (SOT1215) is a leadless, ultra-thin surface-mount package measuring 1.1 × 1.0 × 0.37 mm with visible side pads for AOI compatibility and thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base connection via R1) | Accepts TTL/CMOS logic-level drive; internal R1 sets base current without external resistor. |
| 2 | GND (emitter) | Emitter tied directly to ground reference; provides low-impedance return path for switched loads. |
| 3 | Output (collector) | Switches high-side or low-side loads up to 100 mA; electrically isolated from input pin by internal structure. |
| 4 | Output (collector) | Dual-collector configuration improves current handling and thermal distribution; both pins must be connected. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Eliminates two external resistors, reducing component count and PCB area in digital interface circuits. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock testing. |
| 0.37 mm package height | Enables use in ultra-thin portable electronics and stacked PCB assemblies where Z-height is constrained. |
| AOI-compatible side pads | Allows automated optical inspection of solder joints without X-ray, improving manufacturing yield and traceability. |
| Reduced pick-and-place cost | Small footprint and standardized DFN geometry lower placement time and feeder setup overhead in SMT lines. |
Applications
| Automotive Body Control Module | Industrial PLC Input Stage |
|---|---|
Use Scenario: Switching door lock actuators and interior lighting loads in 12 V vehicle systems. IC Role / Device Role: NPN digital switch interfacing microcontroller GPIOs to inductive/resistive loads. Use Value: Built-in 47 kΩ bias resistors prevent need for external pull-up/pull-down networks, saving board space and assembly steps. |
Use Scenario: Level-shifting 24 V sensor signals to 3.3 V/5 V microcontroller inputs in factory automation. IC Role / Device Role: Digital input buffer providing galvanic isolation and noise filtering via controlled saturation. Use Value: VI(off) ≥ 1.2 V and VI(on) ≤ 3.0 V ensure clean logic thresholds despite EMI in industrial environments. |
| Consumer IoT Sensor Node | Medical Wearable Power Management |
Use Scenario: Enabling/disabling BLE radio and environmental sensors to extend battery life in compact wearables. IC Role / Device Role: Low-quiescent-load power switch controlling peripheral supply rails. Use Value: 100 nA ICEO and 90 µA IEBO minimize standby leakage, preserving battery charge over multi-week sleep cycles. |
Use Scenario: Isolating patient-connected analog front-end circuitry from digital processing units in diagnostic patches. IC Role / Device Role: Signal-path gate preventing cross-talk during data acquisition phases. Use Value: 2.5 pF collector capacitance limits signal distortion and preserves bandwidth in sub-1 MHz biomedical sensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN resistor-equipped transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC124EQAZ | R1/R2 = 22 kΩ - lower input resistance increases base drive current requirement. | Better suited for higher-speed switching (>100 kHz) due to faster turn-on but higher static power draw. | Select when driving heavier loads requiring >5 mA base current and faster edge rates are critical. |
| BC847B,215 | Discrete NPN BJT - requires two external bias resistors; no integrated R1/R2 network. | Higher BOM count and layout complexity; lacks AEC-Q101 qualification and AOI-optimized package. | Choose only if legacy design reuse mandates TO-236AB footprint or parametric tuning of bias ratios is required. |
Compared with PDTC124EQAZ, PDTC144EQAZ offers higher input impedance for lower GPIO loading and better noise immunity, while BC847B,215 demands additional passives and fails to meet automotive qualification or space-constrained packaging needs.
Availability
PDTC144EQAZ is available at Aetrix Electronics and suitable for automotive body control, industrial PLC input conditioning, consumer IoT power gating, and medical wearable signal isolation requiring stable component supply and long-term lifecycle support.
Supply support for PDTC144EQAZ 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
PDTC144EQAZ belongs to the PDTC143/114/124/144EQA series of resistor-equipped transistors designed specifically for simplified digital switching in space- and cost-sensitive applications where AEC-Q101 compliance and ultra-small packaging are mandatory.
FAQ
What is the maximum continuous collector current for PDTC144EQAZ?
The maximum continuous collector current is 100 mA under standard FR4 PCB conditions. Derating applies above 25 °C ambient: power dissipation drops from 280 mW (single-layer) to 440 mW (4-layer) with thermal resistance of 446 K/W and 284 K/W respectively. Operation beyond this rating risks permanent junction damage.
Can PDTC144EQAZ replace BC847B in existing designs?
Yes, as a drop-in functional replacement in digital switching roles-but only if the original BC847B circuit uses fixed-bias configuration with ~47 kΩ base resistors. PDTC144EQAZ integrates those resistors, so external R1/R2 must be removed. Pinout differs (DFN1010D-3 vs. TO-236AB), requiring PCB redesign.
Is PDTC144EQAZ suitable for switching inductive loads like relays?
Yes, with proper flyback protection. Its 50 V VCEO rating supports typical 12 V relay coils, and 100 mA IO covers most signal-level relays. Always include a reverse-biased diode across the coil to clamp inductive kickback and prevent VCEO overshoot exceeding 50 V.
What does the marking code '10 01 10' indicate on PDTC144EQAZ?
The binary marking '10 01 10' uniquely identifies PDTC144EQAZ within the PDTC143/114/124/144EQA family. Per Nexperia's SOT1215 marking standard, it corresponds to the 47 kΩ/47 kΩ resistor variant and is laser-etched on the top surface near pin 1 for traceability and automated assembly verification.
PDTC144EQAZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-XDFN Exposed Pad
- 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):
- 47 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- 230 MHz
- Power - Max:
- 280 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1010D-3
PDTC144EQAZ FAQ
1.How can I place an order for PDTC144EQAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144EQAZ 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 PDTC144EQAZ reliable?
The price and inventory of PDTC144EQAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144EQAZ is usually 5 days.
3.What payment methods are accepted for PDTC144EQAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144EQAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144EQAZ?
PDTC144EQAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144EQAZ 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 PDTC144EQAZ?
For technical support, including PDTC144EQAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144EQAZ requirements.
6.How does Aetrix verify that PDTC144EQAZ is sourced from the original manufacturer or authorized distributors?
All PDTC144EQAZ 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 PDTC144EQAZ meets industry standards.
7.What is the process for return or replacement of PDTC144EQAZ?
All PDTC144EQAZ units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144EQAZ, 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 PDTC144EQAZ part is unused and in its original packaging.
Return procedure for PDTC144EQAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144EQAZ Tags
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MUN5211T1G
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