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Nexperia USA Inc. PDTC143EU-QX
- Part No.:
- PDTC143EU-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC143EU-QX.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:7,755
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Product details
Overview
PDTC143EU-QX from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, featuring integrated 4.7 kΩ input and feedback bias resistors (R1 = R2 = 4.7 kΩ), 50 V VCEO, 100 mA IO, and optimized for automotive digital switching applications such as IC input control and low-power load switching.
For engineers reviewing the PDTC143EU-QX datasheet, PDTC143EU-QX pinout, PDTC143EU-QX application, or PDTC143EU-QX equivalent, this page delivers verified electrical parameters, validated automotive qualification status, confirmed SC-70 pin mapping, and direct functional alternatives to BC847-Q series transistors in cost-sensitive digital logic interfaces.
Technical Context
This RET integrates a monolithic NPN transistor with two precision laser-trimmed on-die resistors-R1 connected between base and input, R2 between base and emitter-enabling single-resistor drive operation without external bias networks. It operates as a digitally controlled switch with defined VI(on)/VI(off) thresholds (1.9–2.5 V / 0.5–1.1 V) and guaranteed hFE ≥ 30 at 10 mA IC.
The device complies with AEC-Q101 stress testing for discrete semiconductors, supports ambient temperatures from –65 °C to +150 °C, and exhibits 230 MHz fT (typ.) for the internal transistor, enabling reliable performance in high-speed digital signal routing and automotive body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive systems with margin. |
| IO | 100 mA - Continuous output current rating; sufficient for driving LED indicators, small relays, or logic inputs. |
| R1 | 4.7 kΩ (typ.) - Input bias resistor value; sets base current for predictable turn-on with standard 3.3 V/5 V logic levels. |
| R2/R1 | 1.0 (typ.) - Unity bias resistor ratio; ensures stable saturation and low VCE(sat) ≤ 150 mV at IC = 10 mA. |
| hFE | ≥30 - Minimum DC current gain at VCE = 5 V, IC = 10 mA; guarantees robust switching across temperature range. |
| fT | 230 MHz (typ.) - Transition frequency of internal transistor; supports fast edge response in digital interface circuits. |
| VCE(sat) | ≤150 mV - Collector-emitter saturation voltage at IC = 10 mA, IB = 0.5 mA; minimizes conduction loss in power-efficient designs. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 3-terminal, 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, FR4-compatible footprint per Fig. 11 (reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Connects to logic driver; internal R1 routes current into base, eliminating external pull-up/pull-down components. |
| 2 | Ground (emitter) | Emitter terminal tied to system ground; provides return path for load current and defines reference for input threshold. |
| 3 | Output (collector) | Switched output node; connects to load (e.g., LED anode or IC input); sinks current when active. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Monolithic R1/R2 resistors eliminate 2 external components and reduce PCB area by >30% vs. discrete BJT + resistors. |
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications including temperature cycling, HTRB, and ESD tests per JESD22-A110/A114. |
| Low VCE(sat) | ≤150 mV at rated current ensures <15 mW conduction loss, critical for thermally constrained modules like door ECUs. |
| Standardized marking | %02 code enables automated optical inspection (AOI) traceability and eliminates manual verification during SMT assembly. |
| SC-70 footprint compatibility | Matches industry-standard SOT323 land pattern (2.65 mm × 2.35 mm solder pads), ensuring drop-in replacement in existing layouts. |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Switching 12 V indicator LEDs and small solenoids in door latch and mirror control units. IC Role / Device Role / Timing Role: Digital output switch translating microcontroller GPIO signals into load-current-sinking paths. Use Value: Eliminates need for discrete base resistors and reduces BOM count by two parts per channel, lowering assembly cost and test complexity. |
Use Scenario: Level-shifting and noise-immune signal conditioning between 3.3 V microcontrollers and 24 V industrial sensors. IC Role / Device Role / Timing Role: Logic-level translator with built-in hysteresis via R1/R2 feedback, rejecting transient coupling on long sensor cables. Use Value: VI(on)/VI(off) spread (≥0.8 V) provides 40% noise margin over standard CMOS thresholds, improving reliability in electrically noisy factory environments. |
| Consumer Appliance Control Board | Automotive Lighting Driver |
Use Scenario: Driving optocoupler inputs and relay coils in smart HVAC and washing machine mainboards. IC Role / Device Role / Timing Role: High-side or low-side switch enabling isolation and galvanic separation in safety-critical subsystems. Use Value: 100 mA IO rating supports direct drive of 5 V/20 mA optocouplers without buffer stages, simplifying isolation barrier design. |
Use Scenario: Controlling position lamp and side marker LED strings in headlamp control modules. IC Role / Device Role / Timing Role: Constant-current sink switch with thermal derating support up to 150 °C junction temperature. Use Value: Rth(j-a) = 625 K/W allows sustained 100 mA operation at +85 °C ambient with minimal heatsinking, meeting OEM thermal budgets. |
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 RB and RE for biasing. | Higher component count and layout sensitivity; lacks AEC-Q101 qualification out-of-box. | Select when fine-tuned biasing or higher hFE (>200) is required, and qualification can be added at system level. |
| PDTA143EU-Q | PNP complement with identical R1/R2 values (4.7 kΩ), same SOT323 package, and matching AEC-Q101 qualification. | Used for high-side switching where emitter connects to supply rail instead of ground. | Choose for complementary push-pull or dual-rail digital interface designs requiring matched RET characteristics. |
Compared with BC847B-Q, PDTC143EU-QX reduces design iteration time by removing bias resistor selection and layout validation; versus PDTA143EU-Q, it provides NPN polarity for grounded-load configurations essential in most microcontroller-driven outputs.
Availability
PDTC143EU-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer appliance control boards, and automotive lighting drivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PDTC143EU-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 logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components and advanced packaging.
PDTC143EU-QX belongs to Nexperia's Automotive-qualified Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT/resistor combinations in cost- and space-constrained digital switching applications.
FAQ
What is the maximum operating temperature for PDTC143EU-QX?
The PDTC143EU-QX has a specified junction temperature limit of 150 °C and an ambient operating range of –65 °C to +150 °C. Its thermal resistance Rth(j-a) is 625 K/W on standard FR4 PCB, allowing full 100 mA output current up to +85 °C ambient with no forced cooling.
Is PDTC143EU-QX pin-compatible with BC847 series transistors?
No-PDTC143EU-QX uses SOT323 (SC-70) with pinout Input/Ground/Output (1/2/3), while BC847 variants in SOT23 have Emitter/Base/Collector (1/2/3). Direct replacement requires PCB layout revision; however, its functional role as a digital switch aligns with BC847-Q series in system-level design.
Does PDTC143EU-QX require external bias resistors?
No. PDTC143EU-QX integrates R1 = 4.7 kΩ (input-to-base) and R2 = 4.7 kΩ (base-to-emitter) internally. This eliminates the need for external bias components, reducing bill-of-materials count and improving manufacturing yield in automated SMT lines.
How does the R2/R1 ratio affect switching behavior?
The R2/R1 ratio of 1.0 ensures strong negative feedback during saturation, stabilizing VCE(sat) and improving immunity to temperature-induced hFE variation. This results in consistent turn-on timing and reduced risk of partial conduction in automotive environments where ambient swings exceed 100 °C.
PDTC143EU-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):
- 4.7 kOhms
- Resistor - Emitter Base (R2):
- 4.7 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 30 @ 10mA, 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
PDTC143EU-QX FAQ
1.How can I place an order for PDTC143EU-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143EU-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 PDTC143EU-QX reliable?
The price and inventory of PDTC143EU-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143EU-QX is usually 5 days.
3.What payment methods are accepted for PDTC143EU-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143EU-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143EU-QX?
PDTC143EU-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143EU-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 PDTC143EU-QX?
For technical support, including PDTC143EU-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143EU-QX requirements.
6.How does Aetrix verify that PDTC143EU-QX is sourced from the original manufacturer or authorized distributors?
All PDTC143EU-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 PDTC143EU-QX meets industry standards.
7.What is the process for return or replacement of PDTC143EU-QX?
All PDTC143EU-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143EU-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 PDTC143EU-QX part is unused and in its original packaging.
Return procedure for PDTC143EU-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143EU-QX Tags
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DRDNB16W-7
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PDTC114ET,215
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