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NXP Semiconductors PDTA144VU,115
- Part No.:
- PDTA144VU,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
PDTA144VU,115.pdf
- Description:
- TRANS PREBIAS
- Quantity:
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Product details
Overview
PDTA144VU from Nexperia is a PNP resistor-equipped transistor (RET) with integrated bias resistors R1 = 47 kΩ and R2 = 10 kΩ, designed for general-purpose switching in low-voltage digital interface circuits. It features VCEO = −50 V, IO = −100 mA DC output current, and SOT323 (SC-70) surface-mount package. Used in level-shifting logic drivers and microcontroller I/O buffering where space-constrained discrete switching is required.
For engineers reviewing the PDTA144VU datasheet, PDTA144VU pinout, PDTA144VU application, or PDTA144VU equivalent, this device serves as a pre-biased PNP switch eliminating external base resistors, reducing BOM count and PCB area in 3.3 V/5 V logic interfacing, LED driver stages, and power rail control circuits.
Technical Context
This RET integrates two precision thin-film resistors (R1 = 47 kΩ ±22%, R2/R1 = 0.21 ±21%) directly on-chip to configure fixed-current gain and ensure predictable turn-on/turn-off thresholds. Its PNP topology enables active-low switching with emitter tied to VCC, collector driving loads to ground.
The device operates with VI(off) ≤ −1 V and VI(on) ≥ −3.8 V at IC = −2 mA, supporting TTL- and CMOS-compatible input drive. Thermal resistance Rth(j-a) = 625 K/W (SOT323) limits continuous dissipation to 200 mW at Tamb = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V: Maximum allowable collector-emitter voltage before breakdown; supports 36 V rail switching with safety margin. |
| IO (DC) | −100 mA: Continuous collector current rating; sufficient for driving LEDs, small relays, or logic gates. |
| R1 | 47 kΩ ±22%: Input bias resistor enabling direct connection to MCU GPIO without external pull-up/down. |
| R2/R1 | 0.21 ±21%: Fixed feedback ratio setting stable hFE ≈ 40–100 range under varying temperature and process. |
| VCE(sat) | −150 mV @ IC = −10 mA, IB = −0.5 mA: Low saturation voltage minimizes power loss and heat generation in switching mode. |
| Ptot | 200 mW @ Tamb = 25 °C: Total power dissipation limit in SOT323 package; requires thermal derating above 25 °C ambient. |
| Cc | 2 pF @ VCB = −10 V, f = 1 MHz: Low collector capacitance ensures fast switching (<100 ns typical ton/toff) in digital applications. |
Pinout & Package
SOT323 (SC-70) is a 3-lead plastic surface-mounted package measuring 2.2 mm × 1.35 mm × 1.15 mm, optimized for high-density PCB layouts and reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts logic-level input signal to enable PNP conduction. |
| 2 | GND (emitter) | Emitter terminal tied to system ground or low-side reference; forms common return path for load current. |
| 3 | Output (collector) | Switched output node; sinks current from VCC-referenced load (e.g., LED anode, relay coil top). |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | Eliminates need for two external resistors, reducing component count by 2 and saving ~1.5 mm² PCB area per channel. |
| Predefined R2/R1 ratio | 0.21 ensures consistent DC current gain (hFE ≈ 40–100) across temperature and process variation, simplifying design validation. |
| Low VCE(sat) | −150 mV at rated current enables <15 mW conduction loss, critical for battery-powered and thermally constrained designs. |
| SOT323 footprint compatibility | Matches JEDEC SC-70 standard; allows drop-in replacement of other SC-70 PNP switches without layout change. |
| −65 °C to +150 °C operating range | Supports industrial and automotive under-hood environments where ambient temperatures exceed 105 °C. |
Applications
| Logic Level Translation | Microcontroller I/O Buffering |
|---|---|
|
Use Scenario: Converting 3.3 V MCU output to drive 5 V or 12 V peripheral inputs requiring active-low enable signals. IC Role / Device Role / Timing Role: PNP switch configured as inverting level shifter with emitter at higher rail and collector pulling down target input. Use Value: Eliminates need for dual-supply level translators or discrete resistor networks while maintaining sub-100 ns propagation delay. |
Use Scenario: Protecting MCU GPIO pins from overcurrent when driving capacitive loads like display segment lines or sensor enable nodes. IC Role / Device Role / Timing Role: Current-limited active-low switch isolating MCU output from downstream circuitry during fault conditions. Use Value: Built-in R1/R2 prevents accidental GPIO latch-up and reduces ESD susceptibility compared to bare transistor solutions. |
| LED Driver Stage | Power Rail Control |
|
Use Scenario: Driving multiple indicator LEDs from low-power microcontrollers in portable medical devices and wearables. IC Role / Device Role / Timing Role: Constant-current sink switch controlling LED anode-to-VCC current path via collector-emitter conduction. Use Value: −100 mA rating supports up to 8 parallel LEDs at 12 mA each; low VCE(sat) extends battery life by minimizing wasted power. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., sensor bias, RF module VBB) in IoT edge nodes based on system sleep state. IC Role / Device Role / Timing Role: High-side switch replacement using emitter-follower configuration to control rail voltage with minimal dropout. Use Value: Integrated bias network ensures reliable turn-off even with floating MCU pins during reset, preventing unintended rail activation. |
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 |
|---|---|---|---|
| PDTC144VU | NPN complement with identical R1/R2 values and SOT323 package; requires inverted logic drive and low-side switching topology. | Used where load must be connected between VCC and collector (NPN sink), not emitter-referenced (PNP source). | Select PDTC144VU only when circuit architecture mandates NPN configuration or when sharing layout with existing NPN-based designs. |
| NSV144VU | Same R1/R2 values and SOT323 package but rated for −60 V VCEO and −150 mA IO; higher thermal resistance (650 K/W). | Suitable for higher-voltage industrial controls (e.g., 48 V PLC I/O) where extended breakdown margin is required. | Choose NSV144VU if VCEO > −50 V or IO > −100 mA is needed; otherwise PDTA144VU offers better thermal performance at lower cost. |
Compared with PDTC144VU and NSV144VU, PDTA144VU provides optimal balance of voltage margin, current capability, and thermal efficiency in standard 3.3 V/5 V embedded systems-making it preferred for cost-sensitive, space-constrained logic interface applications.
Availability
PDTA144VU is available at Aetrix Electronics and suitable for logic level translation, microcontroller I/O buffering, LED driver stages, and power rail control requiring stable component supply across production volumes.
Supply support for PDTA144VU 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 PDTA144VU belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to simplify digital interface design by integrating precision bias networks into compact surface-mount packages.
FAQ
What is the maximum safe operating voltage for PDTA144VU?
The absolute maximum collector-emitter voltage (VCEO) is −50 V, meaning the device can safely switch loads referenced up to 50 V above its emitter potential. Operation beyond this value risks avalanche breakdown and permanent damage. For 24 V industrial systems, this provides 26 V headroom-sufficient for transients per IEC 61000-4-5 Level 3.
Can PDTA144VU replace a standard PNP transistor with external base resistors?
Yes-PDTA144VU replaces a discrete PNP transistor plus two base resistors (R1 = 47 kΩ, R2 = 10 kΩ) in a single SOT323 package. It maintains identical DC bias behavior and switching characteristics while reducing assembly steps, test points, and failure modes associated with passive component placement.
Does PDTA144VU support PWM dimming of LEDs?
Yes-its 2 pF collector capacitance and −150 mV VCE(sat) enable clean switching up to 100 kHz PWM frequencies. At 1 kHz with 10 mA average current, thermal rise remains below 10 °C in still air, making it suitable for LED backlight and status indicator dimming without added heatsinking.
Is there a lead-free and RoHS-compliant version of PDTA144VU?
Yes-PDTA144VU is manufactured in full compliance with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The SOT323 package uses matte tin (Sn) termination with no lead, antimony, or halogenated flame retardants, and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1).
PDTA144VU,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Resistor - Base (R1):
- -
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- -
- Power - Max:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PDTA144VU,115 FAQ
1.How can I place an order for PDTA144VU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA144VU,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 PDTA144VU,115 reliable?
The price and inventory of PDTA144VU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA144VU,115 is usually 5 days.
3.What payment methods are accepted for PDTA144VU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA144VU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTA144VU,115?
PDTA144VU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA144VU,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 PDTA144VU,115?
For technical support, including PDTA144VU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA144VU,115 requirements.
6.How does Aetrix verify that PDTA144VU,115 is sourced from the original manufacturer or authorized distributors?
All PDTA144VU,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 PDTA144VU,115 meets industry standards.
7.What is the process for return or replacement of PDTA144VU,115?
All PDTA144VU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA144VU,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 PDTA144VU,115 part is unused and in its original packaging.
Return procedure for PDTA144VU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTA144VU,115 Tags
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MMUN2211LT1G
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