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Nexperia USA Inc. PDTC144EU-QX
- Part No.:
- PDTC144EU-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC144EU-QX.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:6,790
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Product details
Overview
PDTC144EU-QX from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, featuring integrated 47 kΩ input and feedback bias resistors, 50 V VCEO, 100 mA IO, and optimized for digital switching in automotive control modules.
For engineers reviewing the PDTC144EU-QX datasheet, PDTC144EU-QX pinout, PDTC144EU-QX application, or PDTC144EU-QX equivalent, this device serves as a drop-in replacement for BC847-Q series transistors in load-switching and IC-input control circuits where board space, BOM count, and automotive qualification are critical.
Technical Context
This RET integrates a monolithic NPN transistor with two precision laser-trimmed on-die resistors (R1 = 47 kΩ, R2/R1 = 1.0), enabling single-pin base drive without external bias networks. Its simplified input stage supports direct microcontroller GPIO interfacing at 3.3 V or 5 V logic levels.
The device operates with guaranteed VI(on) ≤ 1.6 V at IC = 2 mA and VI(off) ≥ 1.2 V at IC = 100 µA, ensuring robust noise immunity and clean digital switching across −40 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with margin. |
| IO | 100 mA - Continuous output current capability; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 47 kΩ - Integrated base input resistor; eliminates need for external pull-up/pull-down, reducing PCB area by ~1.5 mm². |
| R2/R1 | 1.0 - Unity bias resistor ratio; ensures stable saturation and predictable turn-off behavior under varying temperature. |
| VCE(sat) | 150 mV max at IC = 10 mA / IB = 0.5 mA - Low saturation voltage minimizes power loss and self-heating in switching mode. |
| fT | 230 MHz - Transition frequency of internal transistor; supports fast edge rates up to ~10 MHz digital switching. |
| Ptot | 200 mW at Tamb = 25 °C - Thermal limit defined on FR4 PCB; derates linearly above 25 °C per 625 K/W Rth(j-a). |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 3-lead, 1.3 mm pitch, 2.0 mm × 1.25 mm × 0.95 mm body height; optimized for high-density automotive PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts direct logic-level drive; no external base resistor required. |
| 2 | GND (emitter) | Emitter tied to system ground; provides return path for bias and output current; common reference for input threshold. |
| 3 | Output (collector) | Switched high-side output node; sinks load current to GND when active; rated for 50 V and 100 mA continuous. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Stress-tested per automotive discrete semiconductor standard; supports PPAP documentation and zero-defect manufacturing requirements. |
| Integrated R1 + R2 network | Eliminates two external 0402/0603 resistors; reduces pick-and-place steps, placement error risk, and thermal mismatch in temperature-critical zones. |
| Low VI(on)/VI(off) hysteresis | 1.6 V on-threshold and 1.2 V off-threshold at 25 °C ensure >400 mV noise margin against EMI in 12 V vehicle harness environments. |
| SC-70 footprint compatibility | Matches industry-standard SOT323 land pattern (Fig. 11); enables reuse of existing stencil and AOI inspection templates. |
Applications
| Automotive Body Control Module | Industrial PLC Input Stage |
|---|---|
|
Use Scenario: Switching 12 V indicator LEDs and solenoid drivers in door module PCBs with limited layer count and thermal mass. IC Role / Device Role / Timing Role: Digital load switch replacing discrete BJT + resistor pair; handles 5–50 mA loads with <1 µs turn-on delay. Use Value: Reduces component count by 2 per channel and improves long-term reliability over temperature cycling due to monolithic resistor matching. |
Use Scenario: Level-shifting and isolating 24 V field sensor signals into 3.3 V microcontroller GPIO pins in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Input conditioning switch; clamps input current to safe levels while preserving signal integrity during transients. Use Value: Enables direct connection without external Zener or TVS, leveraging built-in resistor network for current limiting and noise rejection. |
| Automotive HVAC Panel | Smart Lighting Driver Interface |
|
Use Scenario: Driving backlight segments and tactile feedback actuators in climate control panels exposed to cabin temperature extremes (−40 °C to +85 °C). IC Role / Device Role / Timing Role: High-reliability digital switch with guaranteed operation across full automotive ambient range; supports PWM dimming up to 5 kHz. Use Value: Maintains consistent VCE(sat) and hFE across temperature, avoiding brightness drift or audible coil whine in actuator drivers. |
Use Scenario: Enabling/disabling individual LED strings in architectural lighting fixtures with DALI or 0–10 V analog dimming interfaces. IC Role / Device Role / Timing Role: Logic-controlled enable switch placed between constant-current driver and LED string; handles 100 mA peak surge currents. Use Value: Provides fail-safe open-circuit protection when disabled and avoids latch-up risk due to integrated resistor isolation. |
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 |
|---|---|---|---|
| BC847B-Q | Discrete NPN BJT without integrated resistors; requires external 47 kΩ base resistor and 47 kΩ emitter feedback resistor. | Higher BOM count and layout area; less immune to trace parasitics in high-noise engine bay environments. | Select when legacy design reuse or fine-tuned bias adjustment is required; not recommended for new AEC-Q101-compliant designs. |
| PDTA144EU | PNP complement with identical R1/R2 values (47 kΩ), same SOT323 package, but inverted polarity and −50 V VECO rating. | Used for high-side switching or complementary push-pull stages; not interchangeable without circuit redesign. | Choose only for PNP-side implementation in dual-transistor configurations; shares footprint and thermal profile but not functional equivalence. |
Compared with BC847B-Q and PDTA144EU, PDTC144EU-QX delivers verified AEC-Q101 qualification, reduced assembly cost, and guaranteed resistor matching-making it optimal for new automotive digital switching nodes where qualification, size, and reliability are prioritized over manual bias tuning.
Availability
PDTC144EU-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input conditioning, and smart lighting interface applications requiring stable component supply and full AEC-Q101 compliance.
Supply support for PDTC144EU-QX 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 high-volume, high-reliability essential semiconductors for automotive, industrial, and consumer markets.
PDTC144EU-QX belongs to Nexperia's Automotive Qualified Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT-resistor combinations in space-constrained, thermally demanding automotive digital control systems.
FAQ
Is PDTC144EU-QX pin-compatible with BC847B-Q?
No. PDTC144EU-QX uses a 3-pin SOT323 configuration with Pin 1 = Input (base), Pin 2 = GND (emitter), Pin 3 = Output (collector). BC847B-Q is a standard BJT with Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. The pinouts are incompatible without PCB redesign and routing changes.
What is the maximum operating temperature for continuous use?
The PDTC144EU-QX has a maximum junction temperature (Tj) of 150 °C and an ambient temperature range of −65 °C to +150 °C. For continuous operation at full 100 mA output current, board-level thermal design must maintain Tj ≤ 150 °C, typically requiring ≤ 85 °C ambient on FR4 with standard copper foil.
Can PDTC144EU-QX be used in 5 V logic systems?
Yes. Its VI(on) is specified at 1.6 V (typical) and VI(off) at 1.2 V (typical), providing >1.8 V noise margin against 5 V TTL/CMOS logic thresholds. It reliably switches with 3.3 V or 5 V GPIO outputs without level-shifting circuitry.
Does PDTC144EU-QX require external decoupling capacitors?
No. As a passive switching element-not an active IC-it does not require supply decoupling. However, local 100 nF ceramic capacitance near the load is recommended to suppress high-frequency ringing during fast switching transitions, especially in automotive harness-connected loads.
PDTC144EU-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- 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):
- 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:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC144EU-QX FAQ
1.How can I place an order for PDTC144EU-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144EU-QX 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 PDTC144EU-QX reliable?
The price and inventory of PDTC144EU-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144EU-QX is usually 5 days.
3.What payment methods are accepted for PDTC144EU-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144EU-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144EU-QX?
PDTC144EU-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144EU-QX 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 PDTC144EU-QX?
For technical support, including PDTC144EU-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144EU-QX requirements.
6.How does Aetrix verify that PDTC144EU-QX is sourced from the original manufacturer or authorized distributors?
All PDTC144EU-QX 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 PDTC144EU-QX meets industry standards.
7.What is the process for return or replacement of PDTC144EU-QX?
All PDTC144EU-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144EU-QX, 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 PDTC144EU-QX part is unused and in its original packaging.
Return procedure for PDTC144EU-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144EU-QX Tags
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