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NXP Semiconductors PDTA144TT,215
- Part No.:
- PDTA144TT,215
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Description:
- TRANS PNP W/RES 50V SOT-23
- Quantity:
- Payment:
- Shipping:
Inventory:81,000
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Product details
Overview
PDTA144TT 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 SOT23 package - used for compact DC switching in low-power logic interface circuits such as microcontroller GPIO drivers and LED sink control.
For engineers reviewing the PDTA144TT datasheet, PDTA144TT pinout, PDTA144TT application, or PDTA144TT equivalent, key selection criteria include verified PNP digital transistor functionality, guaranteed R1 tolerance (33–61 kΩ), SOT23 thermal resistance (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 laser-trimmed 47 kΩ input bias resistor (R1) connected between base and emitter; R2 is unconnected (open), enabling direct logic-level drive without external bias components. It operates as a saturated switch under −10 mA to −100 mA collector loads.
Designed for DC-coupled digital switching, it delivers guaranteed hFE ≥ 100 at −1 mA IC, VCE(sat) ≤ −150 mV at −10 mA IC/−0.5 mA IB, and exhibits low leakage (ICEO ≤ −1 μA at −30 V VCE), supporting reliable off-state isolation in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - supports rail-to-rail switching in 24 V industrial control and 3.3/5 V logic interfaces without breakdown risk. |
| IO (DC) | −100 mA - enables direct driving of small relays, LEDs, or MOSFET gates without external current amplification. |
| R1 | 47 kΩ (33–61 kΩ range) - provides fixed base current limiting for predictable turn-on behavior with 3.3 V or 5 V CMOS outputs. |
| VCE(sat) | ≤ −150 mV at −10 mA IC - minimizes power loss (<1.5 mW) and self-heating in high-duty-cycle switching applications. |
| Ptot | 250 mW at Tamb ≤ 25 °C - defines maximum continuous dissipation in standard SOT23 PCB layout with minimal copper area. |
| Rth(j-a) | 500 K/W - indicates thermal derating requirement: output current must be reduced by ~1.2 mA/°C above 25 °C ambient. |
Pinout & Package
Package: SOT23 - plastic surface-mounted package, 3 leads, body dimensions 2.9 × 1.3 × 1.0 mm (JEDEC TO-236AB), optimized for automated pick-and-place and reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Input node connected to internal R1 | Accepts logic-high signal (0 V relative to emitter) to activate PNP switch; no external bias required. |
| 2 (Emitter) | Common reference terminal | Connected to supply rail (e.g., +3.3 V); current flows from emitter to collector when switched on. |
| 3 (Collector) | Output switching node | Sinks load current to ground; compatible with open-collector logic inputs and LED anode connections. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in 47 kΩ base resistor | Eliminates two external resistors, reducing BOM count and PCB footprint in GPIO interface designs. |
| Guaranteed hFE ≥ 100 | Ensures consistent saturation across production lots at −1 mA IC, simplifying drive strength validation. |
| Reflow-only soldering compliance | Prevents mechanical stress or thermal damage during assembly; eliminates need for wave or hand-soldering processes. |
| Low ICEO (≤ −1 μA) | Supports >10-year shelf life and stable off-state behavior in always-on battery monitoring circuits. |
Applications
| Microcontroller GPIO Driver | LED Sink Switch |
|---|---|
Use Scenario: Driving discrete loads from 3.3 V or 5 V MCU I/O pins with limited sourcing capability. IC Role / Device Role / Timing Role: PNP digital switch providing level-shifted, current-sinking output stage. Use Value: Enables direct connection of MCU pins to emitter without external bias network, reducing component count by 2× resistors. |
Use Scenario: Controlling indicator LEDs in portable medical devices where space and power efficiency are critical. IC Role / Device Role / Timing Role: Constant-current sink switch with <150 mV saturation drop. Use Value: Delivers full LED brightness at <2 mW dissipation, extending battery runtime in AA/AAA-powered instruments. |
| Logic-Level Inverter | Small-Signal Load Switch |
Use Scenario: Converting active-high logic signals to active-low outputs for legacy sensor interfaces. IC Role / Device Role / Timing Role: Single-transistor inverter with defined input threshold via R1. Use Value: Achieves <100 ns propagation delay with rail-to-rail swing, avoiding timing skew in mixed-voltage systems. |
Use Scenario: Enabling/disabling power to auxiliary circuits (e.g., sensors, RF modules) in IoT edge nodes. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) enable switch with fast turn-off recovery. Use Value: Reduces standby current by >95% compared to discrete BJT+resistor solutions, meeting <10 μA system sleep targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP digital transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC144TT | NPN complement with identical R1 = 47 kΩ, same SOT23 package and pinout (1=base, 2=collector, 3=emitter). | Requires inverted logic drive (high = ON); unsuitable where emitter-referenced sourcing is needed. | Select when load connects to VCC and switching must occur on collector side. |
| EMH11T2R | PNP digital transistor with R1 = 100 kΩ, higher VCEO (−60 V), but lower IO (−50 mA) and larger SOT323 package. | Offers higher voltage margin but reduced current drive and 25% larger PCB footprint. | Choose only if −60 V rating is mandatory and load current stays below 50 mA. |
Compared with PDTC144TT and EMH11T2R, PDTA144TT uniquely balances −50 V rating, −100 mA drive, and minimal SOT23 footprint - making it optimal for space-constrained 3.3/5 V logic interface applications requiring PNP sink topology.
Availability
PDTA144TT is available at Aetrix Electronics and suitable for microcontroller GPIO drivers, LED sink switches, logic-level inverters, and small-signal load switches requiring stable component supply across industrial automation, portable instrumentation, and consumer electronics programs.
Supply support for PDTA144TT 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 semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in high-volume, automotive-qualified logic, power MOSFETs, and digital transistors.
The PDTA144TT belongs to the PDTA144T series of resistor-equipped PNP transistors - engineered for simplified digital switching in cost-sensitive, space-constrained applications across computing, wearables, and industrial controls.
FAQ
Is PDTA144TT compatible with lead-free reflow soldering?
Yes - the device is qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C. The datasheet explicitly states reflow soldering is the only recommended method; wave or hand soldering may damage the internal resistor trim or package integrity.
What is the function of R2 being "open" in PDTA144TT?
R2 is physically unconnected inside the package, meaning no second bias resistor exists between base and collector. This configuration ensures the device functions strictly as a base-driven PNP switch with fixed R1, eliminating unintended feedback paths that could cause oscillation or slow turn-off in high-speed switching.
Can PDTA144TT replace a standard PNP BJT like BC807 in existing designs?
No - unlike BC807, PDTA144TT integrates a 47 kΩ base resistor and uses different pinout (SOT23: 1=base, 2=emitter, 3=collector). Direct substitution would require PCB layout changes and verification of drive strength, as base current is fixed rather than externally adjustable.
Does PDTA144TT support operation at 125 °C ambient temperature?
Yes - its specified operating ambient temperature range is −65 °C to +150 °C. However, at 125 °C, derating applies: maximum IO drops to ~60 mA due to thermal resistance (500 K/W) and junction temperature limit (150 °C), requiring thermal design validation per application load.
PDTA144TT,215 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:
- -
PDTA144TT,215 FAQ
1.How can I place an order for PDTA144TT,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA144TT,215 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 PDTA144TT,215 reliable?
The price and inventory of PDTA144TT,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA144TT,215 is usually 5 days.
3.What payment methods are accepted for PDTA144TT,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA144TT,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTA144TT,215?
PDTA144TT,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA144TT,215 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 PDTA144TT,215?
For technical support, including PDTA144TT,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA144TT,215 requirements.
6.How does Aetrix verify that PDTA144TT,215 is sourced from the original manufacturer or authorized distributors?
All PDTA144TT,215 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 PDTA144TT,215 meets industry standards.
7.What is the process for return or replacement of PDTA144TT,215?
All PDTA144TT,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA144TT,215, 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 PDTA144TT,215 part is unused and in its original packaging.
Return procedure for PDTA144TT,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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