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Nexperia USA Inc. PDTC144WT,215
- Part No.:
- PDTC144WT,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC144WT,215.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,346
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Product details
Overview
PDTC144WT from NXP Semiconductors is an NPN resistor-equipped transistor (RET) with integrated bias resistors R1 = 47 kΩ and R2 = 22 kΩ, designed for compact switching applications in space-constrained PCBs. It supports VCEO = 50 V, IO = 100 mA DC output current, and operates in SOT23 surface-mount package with 1.1 mm × 0.9 mm footprint. Used in level-shifting interfaces and digital logic drivers where discrete base-resistor networks would otherwise increase BOM count.
For engineers reviewing the PDTC144WT datasheet, PDTC144WT pinout, PDTC144WT application, or PDTC144WT equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, confirmed switching performance at 10 mA/0.5 mA drive, and direct alternatives for high-volume consumer and industrial control designs.
Technical Context
This RET integrates two precision thin-film resistors to configure a fixed-current gain bias network, eliminating external components while maintaining predictable turn-on (Vi(on) = 2.7–4 V) and turn-off (Vi(off) = 1.2–1.7 V) thresholds. Its internal R1–R2 ratio of 0.47 ensures stable saturation under varying temperature conditions.
The device operates as a single-stage digital switch with hFE ≥ 60 at IC = 5 mA and VCE = 5 V, delivering VCE(sat) ≤ 150 mV at IC = 10 mA and IB = 0.5 mA - enabling low-loss signal routing in 3.3 V and 5 V logic domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; supports 3.3 V/5 V rail switching with 10× safety margin. |
| IO | 100 mA - Continuous DC output current capability; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 47 kΩ ±28% - Integrated base pull-up resistor; sets input impedance and enables direct MCU GPIO connection without external biasing. |
| R2 | 22 kΩ ±28% - Integrated base-emitter feedback resistor; stabilizes operating point and improves noise immunity. |
| VCE(sat) | ≤150 mV at IC=10 mA/IB=0.5 mA - Low saturation voltage minimizes power loss and self-heating in active-switch mode. |
| Ptot | 250 mW at Tamb ≤25 °C - Thermal limit defined for SOT23 mounting; requires minimal copper area for reliable operation. |
| hFE | ≥60 at VCE=5 V, IC=5 mA - Guaranteed DC current gain ensures consistent switching behavior across production lots. |
Pinout & Package
PDTC144WT is housed in a plastic surface-mounted SOT23 package (JEDEC TO-236AB), measuring 1.1 mm × 0.9 mm × 1.3 mm with gull-wing leads. The package supports reflow soldering only and features a thermal resistance Rth(j-a) of 500 K/W in free air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Input node connected to internal R1–R2 network | Accepts logic-level signals directly; no external resistor needed for biasing or feedback. |
| 2 (Emitter) | Common emitter reference terminal | Connected to ground or low-side return path; defines current sink path for switched loads. |
| 3 (Collector) | Output current terminal | Drives load between VCC and collector; supports up to 100 mA continuous current with <150 mV drop. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors R1/R2 | Eliminates two external 0402/0603 resistors, reducing PCB area by ≥1.5 mm² and assembly steps. |
| Guaranteed Vi(on)/Vi(off) | Enables reliable interfacing with 3.3 V CMOS outputs without level translation or hysteresis design. |
| SOT23 footprint compatibility | Direct replacement for standard SOT23 transistors (e.g., BC847) in existing layouts with no board revision. |
| Low VCE(sat) at rated current | Reduces conduction loss to <1.5 mW at 10 mA load, critical for battery-powered sensor nodes. |
Applications
| LED Driver Circuit | Microcontroller Interface |
|---|---|
Use Scenario: Driving indicator LEDs from 3.3 V GPIO pins in portable medical devices. IC Role / Device Role / Timing Role: Current-sinking switch controlling LED anode-to-VCC path. Use Value: Built-in R1/R2 ensures full turn-on at 3.3 V logic levels while limiting base current to safe MCU drive limits. |
Use Scenario: Level-shifting 5 V TTL signals to 3.3 V microcontroller inputs in industrial PLC modules. IC Role / Device Role / Timing Role: Inverting buffer with defined threshold and fast edge response. Use Value: Vi(on) = 2.7–4 V and Vi(off) = 1.2–1.7 V provide clean logic transition without external Schmitt triggers. |
| Digital Logic Inverter | Load Switch for Peripherals |
Use Scenario: Constructing compact inverters in space-limited IoT sensor hubs. IC Role / Device Role / Timing Role: Single-transistor inverter stage with resistor-defined gain and fan-out. Use Value: Eliminates need for dual-resistor network, cutting component count by 2 per gate and improving layout density. |
Use Scenario: Enabling/disabling 5 V peripheral ICs (e.g., UART transceivers) from low-power MCU sleep states. IC Role / Device Role / Timing Role: High-side or low-side load switch controlled by GPIO. Use Value: 100 mA rating and 150 mV VCE(sat) ensure <15 mW dissipation during active load operation. |
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 |
|---|---|---|---|
| PDTC144ET,215 | Same R1/R2 values (47 kΩ/22 kΩ) but in SOT323 package; higher Rth(j-a) = 625 K/W. | Lower power handling (200 mW vs. 250 mW); suitable only for <50 mA loads in thermally constrained areas. | Select when board layout requires SC-70 footprint or tighter pitch than SOT23 allows. |
| MMBT3904LT1G | No built-in resistors; requires external 47 kΩ + 22 kΩ network; hFE min = 100 vs. 60. | Higher gain but increased BOM count and layout complexity; no guaranteed Vi(on)/Vi(off). | Choose only if precise hFE control or higher current gain is required and extra passives are acceptable. |
Compared with PDTC144ET,215, PDTC144WT offers 25% higher power rating and better thermal performance in SOT23; versus MMBT3904LT1G, it trades raw gain for BOM reduction and deterministic switching thresholds - critical for high-yield automated assembly.
Availability
PDTC144WT is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface modules, and digital logic inverters requiring stable component supply across automotive infotainment, industrial control, and consumer electronics programs.
Supply support for PDTC144WT 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
PDTC144WT belongs to the PDTC144W series of resistor-equipped transistors, engineered to reduce discrete component count in digital interface and switching applications where space, reliability, and manufacturing simplicity are critical.
FAQ
Is PDTC144WT compatible with lead-free reflow soldering processes?
Yes. The datasheet explicitly states that reflow soldering is the only recommended method, and the SOT23 package meets JEDEC J-STD-020 moisture sensitivity level 1 requirements. Peak reflow temperature must not exceed 260 °C for ≤10 seconds, consistent with standard Pb-free profiles.
Can PDTC144WT replace a standard BJT like BC847 in existing designs?
Yes, with layout verification. Pinout matches BC847 (1=base, 2=emitter, 3=collector), and VCEO/IO ratings are identical. However, the internal R1/R2 network means no external base resistor is needed - remove it to avoid double-biasing and potential overdrive.
What is the maximum operating frequency for switching applications?
The datasheet does not specify fT or switching time parameters. Based on Cc = 2.5 pF and typical RET architecture, usable switching is limited to ≤1 MHz for clean edges. For >10 MHz operation, a dedicated RF transistor without integrated resistors is recommended.
Does PDTC144WT support reverse-voltage protection on its input?
No. The input (pin 1) connects directly to R1 and R2; applying negative voltage beyond −10 V (VEBO rating) risks emitter-base junction breakdown. External clamping diodes are required if the driving source can swing below −0.3 V.
PDTC144WT,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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):
- 47 kOhms
- Resistor - Emitter Base (R2):
- 22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 5mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTC144WT,215 FAQ
1.How can I place an order for PDTC144WT,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144WT,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 PDTC144WT,215 reliable?
The price and inventory of PDTC144WT,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144WT,215 is usually 5 days.
3.What payment methods are accepted for PDTC144WT,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144WT,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144WT,215?
PDTC144WT,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144WT,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 PDTC144WT,215?
For technical support, including PDTC144WT,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144WT,215 requirements.
6.How does Aetrix verify that PDTC144WT,215 is sourced from the original manufacturer or authorized distributors?
All PDTC144WT,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 PDTC144WT,215 meets industry standards.
7.What is the process for return or replacement of PDTC144WT,215?
All PDTC144WT,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144WT,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 PDTC144WT,215 part is unused and in its original packaging.
Return procedure for PDTC144WT,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144WT,215 Tags
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