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NXP Semiconductors PDTC144VS,126
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- Part No.:
- PDTC144VS,126
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
PDTC144VS,126.pdf
- Description:
- TRANS PREBIAS NPN 50V TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,726
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Product details
Overview
PDTC144VS,126 from Nexperia is an NPN resistor-equipped transistor in TO-92 (SOT54) package, featuring integrated bias resistors R1 = 47 kΩ and R2/R1 = 0.21, rated for VCEO = 50 V and IO = 100 mA DC, used for general-purpose switching in interface circuits and logic-level signal translation.
For engineers reviewing the PDTC144VS,126 datasheet, PDTC144VS,126 pinout, PDTC144VS,126 application, or PDTC144VS,126 equivalent, this page delivers verified specifications, SOT54 pin mapping, thermal resistance (Rth(j-a) = 250 K/W), off-state input voltage VI(off) = 3.1 V, and direct alternatives for discrete BJT replacement in cost-sensitive through-hole designs.
Technical Context
This device integrates two precision bias resistors (R1 = 47 kΩ, R2 = 10 kΩ) to eliminate external base resistors, enabling single-pin drive operation. It operates as a digital switch with guaranteed saturation at IC = 10 mA / IB = 0.5 mA (VCEsat ≤ 150 mV) and supports ambient temperatures from −65 °C to +150 °C.
The PDTC144VS,126 uses standard TO-92 mechanical form factor with through-hole mounting, delivering 500 mW total power dissipation at Tamb ≤ 25 °C and junction temperature up to 150 °C. Its input voltage range spans −15 V to +40 V, supporting robust noise immunity in industrial control inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V and 36 V supply rail switching. |
| IO (DC) | 100 mA - Continuous output current rating; sufficient for driving LEDs, small relays, and logic buffers. |
| R1 | 47 kΩ ±28% - Integrated base input resistor; eliminates need for external pull-up/pull-down components. |
| R2/R1 | 0.21 - Fixed feedback ratio; ensures stable turn-on behavior and predictable gain across temperature. |
| VCEsat | ≤150 mV at IC = 10 mA / IB = 0.5 mA - Low saturation voltage minimizes power loss and heat generation in switching mode. |
| VI(off) | 3.1 V typical - Input voltage threshold below which device remains reliably off; supports TTL/CMOS-compatible logic levels. |
| Ptot | 500 mW at Tamb ≤ 25 °C - Power handling capability in free-air conditions; defines maximum safe continuous load under standard mounting. |
Pinout & Package
PDTC144VS,126 is housed in SOT54 (TO-92) plastic single-ended leaded through-hole package, with 5.2 mm × 4.8 mm × 14.5 mm body dimensions and 2.54 mm lead pitch.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Internal connection to R1 and R2 network; accepts logic-level drive without external biasing. |
| 2 | output (collector) | Main current-carrying terminal; connects to load (e.g., LED anode or relay coil) referenced to positive supply. |
| 3 | GND (emitter) | Common reference node; tied to system ground; provides return path for switched load current. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | Eliminates two external resistors per switch, reducing BOM count and PCB area in multi-channel logic interfaces. |
| Reduced pick-and-place cost | Single-component placement replaces three-part (transistor + two resistors) assembly, lowering SMT line cycle time and defect risk. |
| Guaranteed VI(on)/VI(off) | On-state input voltage VI(on) ≥ 6 V and off-state VI(off) ≤ 3.1 V ensure clean digital switching with 3.3 V/5 V microcontroller I/O. |
| Thermal robustness | Rth(j-a) = 250 K/W allows sustained 100 mA operation at ambient up to 75 °C without heatsinking in standard FR4 layouts. |
Applications
| Industrial Sensor Interface | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Converting analog sensor outputs (e.g., thermistor-based temperature signals) into clean digital on/off alerts for PLC input modules. IC Role / Device Role / Timing Role: NPN switch translating voltage thresholds into isolated 24 V logic signals compatible with industrial fieldbus receivers. Use Value: Built-in R1/R2 eliminates calibration drift from external resistor tolerances and reduces component count by 2 per channel. |
Use Scenario: Expanding limited GPIO count of ARM Cortex-M0 microcontrollers to drive multiple status LEDs and buzzer indicators. IC Role / Device Role / Timing Role: Level-shifting and current-boosting switch enabling 3.3 V MCU outputs to sink up to 100 mA per LED string. Use Value: VI(off) ≤ 3.1 V ensures reliable LED turn-off even with MCU leakage or floating pins, preventing phantom illumination. |
| Automotive Body Control Module | Consumer Appliance Power Sequencing |
|
Use Scenario: Controlling low-power solenoids and indicator lamps in door lock actuators and interior lighting subsystems. IC Role / Device Role / Timing Role: Robust through-hole switch handling 12 V battery transients and meeting AEC-Q101 stress requirements via design margin. Use Value: VCEO = 50 V and Tj(max) = 150 °C support operation across automotive cold-crank (−40 °C) to under-hood hot-soak (+125 °C) conditions. |
Use Scenario: Enabling safe power-up sequencing in washing machines and HVAC controllers by gating 5 V standby rails to main MCU domains. IC Role / Device Role / Timing Role: Controlled turn-on switch ensuring downstream regulators receive clean enable signals after primary supply stabilization. Use Value: Guaranteed VCEsat ≤ 150 mV limits voltage drop across enable path, preserving tight 5.0 V ±5% tolerance for sensitive logic supplies. |
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 |
|---|---|---|---|
| PDTA144VS | PNP complement with identical R1/R2 values and SOT54 package; VECO = 50 V, IO = −100 mA. | Used where active-low switching or high-side load control is required instead of low-side sinking. | Select PDTA144VS when driving loads connected between supply and collector (high-side configuration). |
| PDTC124YS,126 | Different R1/R2 ratio (R2/R1 = 0.47); higher input sensitivity but lower noise margin (VI(off) = 2.2 V typical). | Better suited for weak-drive sources (e.g., open-drain I²C lines), less tolerant of input noise than PDTC144VS,126. | Choose PDTC124YS,126 only if circuit requires lower turn-on threshold and can tolerate reduced off-state noise immunity. |
Compared with PDTA144VS and PDTC124YS,126, the PDTC144VS,126 offers optimal balance of noise margin (VI(off) = 3.1 V), saturation performance (VCEsat ≤ 150 mV), and compatibility with standard 5 V logic families-making it preferred for general-purpose low-side switching where reliability and ease of use are prioritized over ultra-low drive strength.
Availability
PDTC144VS,126 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 through-hole availability.
Supply support for PDTC144VS,126 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 business, with focus on automotive, industrial, computing, consumer, and wearable markets.
The PDTC144VS,126 belongs to Nexperia's resistor-equipped transistor (RET) product line, designed specifically to simplify digital switching circuits by integrating precision bias networks into standard transistor packages for cost-sensitive, high-volume applications.
FAQ
What is the package type and mounting style of PDTC144VS,126?
The PDTC144VS,126 uses the SOT54 (TO-92) plastic single-ended leaded through-hole package with three leads spaced at 2.54 mm pitch. It is designed for axial through-hole insertion and wave soldering, not surface-mount assembly. The package outline matches JEITA SC-43A and provides 500 mW power dissipation capability at 25 °C ambient.
Does PDTC144VS,126 require external base resistors for operation?
No, the PDTC144VS,126 integrates R1 = 47 kΩ and R2 = 10 kΩ internally, eliminating the need for external base biasing components. This simplifies circuit design, reduces bill-of-materials count, and improves manufacturing yield. The device functions as a true "digital transistor" accepting direct logic-level input on Pin 1.
What is the maximum collector current rating for PDTC144VS,126?
The PDTC144VS,126 is rated for a continuous DC output current (IO) of 100 mA, as specified in the Quick Reference Data table. This rating applies under standard mounting conditions with ambient temperature ≤25 °C. Derating is required above 25 °C per the thermal resistance Rth(j-a) = 250 K/W.
How does the VI(off) specification affect system reliability in noisy environments?
The PDTC144VS,126 has a typical VI(off) of 3.1 V, meaning it remains reliably turned off for input voltages ≤3.1 V. This provides 1.9 V noise margin against 5 V logic high levels (≥5.0 V), preventing false triggering from EMI or crosstalk in industrial control panels and automotive harnesses where ground bounce or supply ripple may occur.
Is PDTC144VS,126 suitable for automotive applications?
Yes, the PDTC144VS,126 meets key automotive stress requirements: VCEO = 50 V exceeds 12 V/24 V battery system transients, Tj(max) = 150 °C supports under-hood thermal environments, and its through-hole SOT54 construction offers mechanical robustness. While not AEC-Q101 certified out-of-box, its design margins align with common automotive body electronics use cases.
PDTC144VS,126 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- 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):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 40 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 500 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
PDTC144VS,126 FAQ
1.How can I place an order for PDTC144VS,126 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144VS,126 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 PDTC144VS,126 reliable?
The price and inventory of PDTC144VS,126 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144VS,126 is usually 5 days.
3.What payment methods are accepted for PDTC144VS,126?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144VS,126 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144VS,126?
PDTC144VS,126 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144VS,126 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 PDTC144VS,126?
For technical support, including PDTC144VS,126 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144VS,126 requirements.
6.How does Aetrix verify that PDTC144VS,126 is sourced from the original manufacturer or authorized distributors?
All PDTC144VS,126 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 PDTC144VS,126 meets industry standards.
7.What is the process for return or replacement of PDTC144VS,126?
All PDTC144VS,126 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144VS,126, 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 PDTC144VS,126 part is unused and in its original packaging.
Return procedure for PDTC144VS,126:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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