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Nexperia USA Inc. PDTC143XU,115
- Part No.:
- PDTC143XU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC143XU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,214
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Product details
Overview
PDTC143XU,115 from Nexperia is an NPN resistor-equipped transistor (RET) in SOT323 (SC-70) surface-mount package, designed for digital switching applications with built-in bias resistors R1 = 4.7 kΩ and R2 = 10 kΩ, 50 V VCEO, 100 mA IO, and AEC-Q101 qualification for automotive use.
For engineers reviewing the PDTC143XU,115 datasheet, PDTC143XU,115 pinout, PDTC143XU,115 application, or PDTC143XU,115 equivalent, key selection criteria include input voltage thresholds (VI(on) = 1.5 V typ, VI(off) = 0.9 V typ), thermal resistance (Rth(j-a) = 625 K/W), DC current gain (hFE ≥ 50 at IC = 10 mA), and compatibility with reflow-only assembly.
Technical Context
This RET integrates a monolithic NPN transistor with two precision on-chip bias resistors-R1 connected between base and input, R2 between base and emitter-enabling single-pin digital control without external components. It operates as a saturated switch with VCE(sat) ≤ 100 mV at IC = 10 mA and IB = 0.5 mA.
The device supports logic-level drive from 1.8 V to 5 V microcontrollers, delivers 100 mA output current, and maintains stable performance across −65 °C to +150 °C ambient range. Its AEC-Q101 qualification confirms suitability for under-hood automotive modules and industrial control I/O stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive and 3.3/5 V logic interfaces. |
| IO | 100 mA - Continuous output current capability; sufficient for driving LEDs, small relays, and logic inputs. |
| R1 | 4.7 kΩ ±27% - Input bias resistor; sets base current for defined turn-on threshold with standard CMOS/TTL outputs. |
| R2/R1 | 2.1 - Fixed internal resistor ratio; ensures stable saturation and prevents latch-up during fast transitions. |
| hFE | ≥50 at VCE = 5 V, IC = 10 mA - Minimum DC current gain; guarantees reliable switching with low drive current. |
| VI(on) | 1.5 V typical at IC = 20 mA - On-state input voltage; compatible with 1.8 V and higher logic families without level shifting. |
| VI(off) | 0.9 V typical at IC = 100 μA - Off-state input voltage; provides noise margin against false triggering in noisy environments. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package, 3-lead, body size 2.2 × 1.35 × 0.95 mm, optimized for high-density PCB layouts and reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected to internal R1; accepts logic-level control signal directly from MCU GPIO or buffer output. |
| 2 | GND (emitter) | Emitter tied to system ground; serves as common return path for load current and bias network. |
| 3 | Output (collector) | Switched high-side or low-side output node; connects to load (e.g., LED anode or relay coil) with external pull-up/pull-down as needed. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Eliminates need for two external resistors, reducing BOM count and layout area by ~30% vs discrete BJT + R1/R2 solution. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD (HBM ≥ 8 kV), enabling use in engine control and body electronics. |
| Reflow-only assembly | Designed exclusively for lead-free reflow profiles (JEDEC J-STD-020); eliminates wave soldering compatibility concerns and improves process yield. |
| Low VCE(sat) | ≤100 mV at IC = 10 mA ensures minimal power loss (<1 mW) and thermal rise in always-on digital interface applications. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input Stage |
|---|---|
Use Scenario: Driving indicator LEDs and small solenoids in door module PCBs with space-constrained SMT layout. IC Role / Device Role / Timing Role: Single-pin-controlled switch replacing BC847 + two resistors; handles 12 V/24 V load switching with logic-level enable. Use Value: Reduces component count per channel by 2 parts and saves >0.8 mm² board area versus discrete implementation. | Use Scenario: Level-shifting and isolation of 24 V field sensor signals into 3.3 V microcontroller GPIO pins. IC Role / Device Role / Timing Role: Digital input conditioner providing noise-immune threshold detection and current-limited interface. Use Value: Enables direct connection of industrial sensors without external voltage dividers or Schmitt triggers. |
| Consumer Appliance Power Sequencing | Medical Diagnostic Equipment I/O Buffer |
Use Scenario: Controlling power-on sequencing of auxiliary rails (e.g., display backlight, fan controller) in smart home hubs. IC Role / Device Role / Timing Role: Low-power enable switch activated by SoC GPIO; supports <1 μA standby leakage and fast turn-on (<100 ns). Use Value: Achieves sub-10 μA system sleep current while maintaining deterministic wake-up timing. | Use Scenario: Isolating patient-connected sensor signals from main processing unit in portable ECG monitors. IC Role / Device Role / Timing Role: Galvanically isolated digital buffer stage (with optocoupler driver configuration) meeting IEC 60601 creepage requirements. Use Value: Provides reinforced insulation interface with <10 nA leakage and 5 kV surge immunity when paired with certified optocouplers. |
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 |
|---|---|---|---|
| PDTC143ET,115 | SOT23 package (larger footprint, 250 mW Ptot), same R1/R2 values and electrical specs. | Better thermal performance in high-duty-cycle switching; less suitable for ultra-dense layouts. | Select when board space allows and higher continuous power dissipation is required. |
| NSVD143XUVT1G | Onsemi part in identical SOT323 package; R1 = 4.7 kΩ, R2 = 10 kΩ, but VCEO = 40 V and no AEC-Q101 certification. | Limited to consumer/industrial use; not qualified for automotive under-hood deployment. | Select for cost-sensitive non-automotive designs where 40 V rating suffices and qualification is unnecessary. |
Compared with PDTC143ET,115, the PDTC143XU,115 offers superior board-area efficiency and lower thermal resistance per unit volume, while NSVD143XUVT1G trades automotive qualification for marginally lower cost in non-critical applications.
Availability
PDTC143XU,115 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.
Supply support for PDTC143XU,115 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.
The PDTC143X series belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT + bias resistor combinations in digital switching applications with improved reliability and reduced assembly cost.
FAQ
What is the maximum operating junction temperature for PDTC143XU,115?
The absolute maximum junction temperature is 150 °C, as specified in the limiting values table. Derating begins above 25 °C ambient, with total power dissipation dropping linearly to zero at 150 °C. At 85 °C ambient, usable Ptot is approximately 120 mW based on the 625 K/W thermal resistance.
Can PDTC143XU,115 be used in a high-side switch configuration?
Yes - when configured with emitter tied to VCC and collector driving the load to ground, it functions as a high-side switch. However, due to its NPN structure, this requires the input signal to swing near VCC; for true logic-compatible high-side control, a PNP RET like PDTA143XU is recommended instead.
Is PDTC143XU,115 compatible with lead-free reflow profiles?
Yes - the datasheet explicitly states reflow soldering is the only recommended method, and the device meets JEDEC J-STD-020 moisture sensitivity level 1. It supports peak temperatures up to 260 °C for ≤10 seconds and is qualified for standard SnAgCu (SAC305) reflow cycles.
How does the R2/R1 ratio affect switching behavior?
The fixed R2/R1 ratio of 2.1 ensures optimal base bias division for deep saturation, minimizing VCE(sat) and preventing unintended conduction during transient noise events. A higher ratio would increase off-state leakage; a lower ratio risks incomplete turn-off at low input voltages, especially over temperature.
PDTC143XU,115 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):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 50 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- 230 MHz
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC143XU,115 FAQ
1.How can I place an order for PDTC143XU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143XU,115 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 PDTC143XU,115 reliable?
The price and inventory of PDTC143XU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143XU,115 is usually 5 days.
3.What payment methods are accepted for PDTC143XU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143XU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143XU,115?
PDTC143XU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143XU,115 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 PDTC143XU,115?
For technical support, including PDTC143XU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143XU,115 requirements.
6.How does Aetrix verify that PDTC143XU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC143XU,115 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 PDTC143XU,115 meets industry standards.
7.What is the process for return or replacement of PDTC143XU,115?
All PDTC143XU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143XU,115, 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 PDTC143XU,115 part is unused and in its original packaging.
Return procedure for PDTC143XU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143XU,115 Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
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DRDNB16W-7
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MMUN2211LT1G
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