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NXP Semiconductors PDTA144TK,115
- Part No.:
- PDTA144TK,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTA144TK,115.pdf
- Description:
- TRANS PREBIAS PNP 50V 0.1A SMT3
- Quantity:
- Payment:
- Shipping:
Inventory:5,067
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Product details
Overview
PDTA144TK from Nexperia is a PNP resistor-equipped transistor with integrated 47 kΩ base bias resistor (R1), open R2 configuration, −50 V VCEO, −100 mA IO, and SOT346 (SC-59) surface-mount package - used for general-purpose switching in interface circuits and level-shifting drivers.
For engineers reviewing the PDTA144TK datasheet, PDTA144TK pinout, PDTA144TK application, or PDTA144TK equivalent, key selection criteria include its built-in bias network, guaranteed −150 mV VCEsat at −10 mA/−0.5 mA drive, thermal resistance of 500 K/W, and compatibility with reflow-only soldering per JEDEC J-STD-020.
Technical Context
This device integrates a single PNP bipolar junction transistor with a precision 47 kΩ pull-up base resistor (R1 = 33–61 kΩ typical), no second resistor (R2 = open), enabling simplified driver-stage design without external bias components. It operates with VEB up to −5 V and supports ambient temperatures from −65 °C to +150 °C.
The PDTA144TK delivers hFE ≥ 100 at VCE = −5 V and IC = −1 mA, exhibits ≤ 3 pF collector capacitance at VCB = −10 V, and maintains ICEO ≤ −1 μA at VCE = −30 V - confirming suitability for low-leakage, medium-speed digital switching applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - maximum safe collector-emitter voltage under open-base conditions, defining off-state blocking capability |
| IO | −100 mA - absolute maximum DC output current, limiting continuous load drive capacity |
| R1 | 47 kΩ (33–61 kΩ range) - integrated base bias resistor enabling single-resistor drive and eliminating external component |
| VCEsat | ≤ −150 mV at IC = −10 mA / IB = −0.5 mA - ensures low conduction loss and efficient saturation in switching mode |
| Ptot | 250 mW at Tamb ≤ 25 °C - total power dissipation limit dictating thermal derating in PCB layout |
| Rth(j-a) | 500 K/W - junction-to-ambient thermal resistance in free air, guiding heatsinking and copper area requirements |
| hFE | ≥ 100 at VCE = −5 V, IC = −1 mA - minimum DC current gain ensuring reliable turn-on with modest base drive |
Pinout & Package
SOT346 (SC-59) plastic surface-mounted package; 3 leads; body dimensions 3.0 × 1.4 × 1.3 mm (L × W × H); recommended for reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Input terminal connected internally to R1; accepts logic-level or microcontroller drive without external bias |
| 2 | Emitter | Common reference node; tied to higher potential (e.g., VCC) in high-side switch configurations |
| 3 | Collector | Output terminal; sinks current when active, suitable for driving LEDs, relays, or logic inputs |
Key Features
| Feature | Design Value |
|---|---|
| Built-in 47 kΩ base bias resistor (R1) | Eliminates need for external bias network, reducing BOM count and PCB footprint by one passive component |
| Open R2 configuration | Enables direct use as a simple inverter or high-side switch without unintended base-emitter shunting |
| Guaranteed VCEsat ≤ −150 mV | Minimizes power loss and self-heating during on-state operation, supporting thermally constrained designs |
| JEDEC-compliant SOT346 package | Ensures compatibility with standard pick-and-place equipment and reflow profiles (J-STD-020) |
| −65 °C to +150 °C operating range | Supports deployment in industrial control, automotive under-hood modules, and wide-temperature embedded systems |
Applications
| Industrial Sensor Interface | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Level-shifting signal from 3.3 V MCU to 5 V/12 V sensor supply rail in factory automation I/O modules. IC Role / Device Role / Timing Role: High-side PNP switch controlling sensor enable line with inverted logic polarity. Use Value: Built-in R1 eliminates discrete bias resistor, reducing layout complexity and improving production yield in space-constrained DIN-rail controllers. |
Use Scenario: Driving multiple LED indicators or small solenoids from limited GPIO pins on an ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: General-purpose digital output buffer with current-sinking capability and fast turn-off due to absence of R2 leakage path. Use Value: VCEsat ≤ −150 mV ensures minimal voltage drop across collector-emitter, preserving margin for downstream logic thresholds. |
| Automotive Body Control Module | Consumer Appliance Power Sequencing |
Use Scenario: Controlling 12 V lamp loads (e.g., interior lighting) via CAN/LIN gateway microcontroller outputs. IC Role / Device Role / Timing Role: Low-power, thermally robust PNP switch interfacing between MCU and load, rated for −40 °C to +125 °C operation. Use Value: ICEO ≤ −1 μA at 150 °C junction temperature prevents false turn-on in hot under-dash environments. |
Use Scenario: Enabling sequential power-up of subsystems (e.g., display backlight before main processor) in smart home hubs. IC Role / Device Role / Timing Role: Precision timing-controlled enable switch with predictable hFE ≥ 100 ensuring consistent turn-on delay across units. Use Value: Tight R1 tolerance (33–61 kΩ) guarantees repeatable base current and stable switching thresholds across production lots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP resistor-equipped transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC144TK | NPN complement with identical SOT346 package, 47 kΩ R1, and matching electrical specs except polarity | Requires inverted logic drive and low-side load placement instead of high-side | Select PDTC144TK when circuit topology mandates NPN configuration or ground-referenced switching |
| NSV144T1T1G | ON Semiconductor PNP RET with same R1 value but higher VCEO (−60 V) and lower Rth(j-a) (400 K/W) | Better suited for higher-voltage or thermally demanding applications where 10 V margin or 125 mW extra dissipation matters | Choose NSV144T1T1G when operating near −50 V limits or requiring enhanced thermal performance in compact layouts |
Compared with PDTC144TK and NSV144T1T1G, the PDTA144TK offers optimal balance of cost, proven reliability in industrial interfaces, and seamless integration into legacy SOT346-based designs - especially where high-side sourcing and −50 V rating are sufficient.
Availability
PDTA144TK is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller GPIO expansion, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for PDTA144TK 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, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.
The PDTA144TK belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered for simplified digital switching in space- and cost-sensitive applications where reduced component count and assembly efficiency are critical.
FAQ
What is the pin configuration of the PDTA144TK?
The PDTA144TK uses a SOT346 package with pin 1 as Base, pin 2 as Emitter, and pin 3 as Collector. This arrangement enables high-side switching configurations and matches industry-standard SOT346 footprints. The internal R1 resistor connects pin 1 to the base region, while R2 is open - confirmed in the official Nexperia datasheet section "Simplified outline, symbol and pinning".
Does the PDTA144TK require an external base resistor?
No, the PDTA144TK does not require an external base resistor because it integrates a 47 kΩ resistor (R1) between base and input terminal. This built-in bias network allows direct connection to logic outputs or microcontroller GPIOs. The datasheet explicitly states R2 = open, meaning no second resistor is present - simplifying circuit design and reducing bill-of-materials count.
What is the maximum power dissipation of the PDTA144TK?
The PDTA144TK has a total power dissipation (Ptot) of 250 mW at ambient temperature ≤ 25 °C in free air. This value is specified in the "Limiting Values" table of the Nexperia datasheet and applies specifically to the SOT346 package. Derating is required above 25 °C at 2.0 mW/°C, based on its 500 K/W thermal resistance.
Can the PDTA144TK be used in automotive applications?
Yes, the PDTA144TK supports automotive applications within its specified operating ambient temperature range of −65 °C to +150 °C and junction temperature limit of 150 °C. Its −50 V VCEO, low leakage (ICEO ≤ −1 μA), and reflow-only soldering compliance align with AEC-Q101 stress test expectations - though formal qualification status must be verified separately per application requirements.
How does the PDTA144TK differ from the PDTA144TE variant?
The PDTA144TK and PDTA144TE share identical electrical characteristics and R1/R2 values, but differ in package: PDTA144TK uses SOT346 (SC-59), while PDTA144TE uses SOT416 (SC-75). The SOT346 package is larger (3.0 × 1.4 mm vs. 1.6 × 1.2 mm), offering better thermal performance (500 K/W vs. 833 K/W) and higher power handling (250 mW vs. 150 mW), making PDTA144TK preferable for higher-current or thermally constrained designs.
PDTA144TK,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMT3; MPAK
PDTA144TK,115 FAQ
1.How can I place an order for PDTA144TK,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA144TK,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 PDTA144TK,115 reliable?
The price and inventory of PDTA144TK,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA144TK,115 is usually 5 days.
3.What payment methods are accepted for PDTA144TK,115?
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4.How is shipping managed for PDTA144TK,115?
PDTA144TK,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA144TK,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 PDTA144TK,115?
For technical support, including PDTA144TK,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA144TK,115 requirements.
6.How does Aetrix verify that PDTA144TK,115 is sourced from the original manufacturer or authorized distributors?
All PDTA144TK,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 PDTA144TK,115 meets industry standards.
7.What is the process for return or replacement of PDTA144TK,115?
All PDTA144TK,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA144TK,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 PDTA144TK,115 part is unused and in its original packaging.
Return procedure for PDTA144TK,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTA144TK,115 Tags
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