My Inquiry
My Account
NXP Semiconductors PDTC144VK,115
- Part No.:
- PDTC144VK,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC144VK,115.pdf
- Description:
- TRANS PREBIAS NPN 50V 0.1A SMT3
- Quantity:
- Payment:
- Shipping:
Inventory:5,038
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PDTC144VK,115 from Nexperia is an NPN resistor-equipped transistor in SOT346 (SC-59A) package, featuring integrated bias resistors R1 = 47 kΩ and R2/R1 = 0.21, VCEO = 50 V, IO = 100 mA DC, and Ptot = 250 mW at Tamb ≤ 25 °C - used for compact logic-level switching in interface circuits and digital signal buffering.
For engineers reviewing the PDTC144VK,115 datasheet, PDTC144VK,115 pinout, PDTC144VK,115 application, or PDTC144VK,115 equivalent, this page delivers verified electrical parameters, confirmed SOT346 terminal mapping, real-world use cases in level translation and load driving, and two validated alternative parts with documented functional differences.
Technical Context
This device integrates two on-die resistors (R1 = 47 kΩ, R2 = 10 kΩ) to form a single-input, emitter-grounded NPN switch with built-in base biasing - eliminating external resistors and reducing PCB footprint. It operates as a digital switch with VI(on) = 3.8 V (typ) and VI(off) = 3.1 V (typ), enabling direct TTL/CMOS logic interfacing without level-shifting circuitry.
VCE(sat) remains ≤150 mV at IC = 10 mA / IB = 0.5 mA, ensuring low conduction loss in drive applications. Its hFE ≥40 at IC = 5 mA / VCE = 5 V supports reliable saturation across industrial temperature ranges (−40 °C to +150 °C junction).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - maximum collector-emitter voltage before breakdown; enables use in 24 V and 3.3–5 V logic-driven 12 V load switching. |
| IO (DC) | 100 mA - continuous output current capability; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 47 kΩ (33–61 kΩ range) - input bias resistor; sets base current for predictable turn-on with standard logic high levels. |
| R2/R1 | 0.21 (0.17–0.26 range) - feedback ratio defining saturation stability and noise immunity against leakage-induced false triggering. |
| VCE(sat) | ≤150 mV at IC = 10 mA - ensures minimal power loss and heat generation during active switching. |
| Ptot | 250 mW at Tamb ≤ 25 °C - thermal limit compatible with standard FR4 PCB layouts without heatsinking. |
| VI(off) | 3.1 V (typ) - guaranteed off-state input threshold; rejects noise below 3.1 V while accepting 3.3 V CMOS logic highs. |
Pinout & Package
SOT346 (SC-59A) plastic surface-mounted package, 3-lead, body size 3.0 × 1.7 × 1.3 mm, optimized for high-density automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Connected internally to R1 and R2; accepts logic-level drive directly - no external base resistor required. |
| 2 | GND (emitter) | Emitter tied to system ground; provides common reference for input and output paths. |
| 3 | output (collector) | Switched output node; sinks up to 100 mA to ground when enabled - suitable for active-low load control. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors (R1 + R2) | Eliminates 2 external components per switch, reducing BOM count and placement cost in multi-channel driver designs. |
| VI(on) = 3.8 V (typ) | Ensures robust turn-on with 3.3 V CMOS outputs while maintaining margin against supply droop or noise. |
| VI(off) = 3.1 V (typ) | Provides 0.4 V noise margin below logic-high threshold, preventing spurious activation in noisy environments. |
| hFE ≥ 40 at 5 mA | Guarantees deep saturation with low base drive, minimizing power dissipation in battery-powered systems. |
| JEDEC SC-59A (SOT346) footprint | Enables drop-in replacement of legacy SOT23/SOT323 switches without layout changes - same pad pitch and solder profile. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Driving multiple indicator LEDs from a 3.3 V microcontroller with limited GPIO current capability. IC Role / Device Role / Timing Role: NPN switch sinking LED current to ground; acts as a logic-level controlled current path. Use Value: Enables direct connection of 20 mA LEDs without external base resistors - reduces component count by 2 per channel and simplifies firmware timing. |
Use Scenario: Extending I/O capability of an MCU by adding discrete logic-level output drivers for peripheral enable signals. IC Role / Device Role / Timing Role: Digital buffer and level translator; converts weak MCU output into a robust 100 mA sink capable of driving optocouplers or reset lines. Use Value: Eliminates need for external pull-up resistors and discrete transistors - cuts board area by >30% per channel versus discrete BJT + R design. |
| Logic-Level Interface | Low-Power Sensor Signal Switching |
|
Use Scenario: Isolating and translating signals between 3.3 V sensor subsystems and 5 V host controllers in IoT edge nodes. IC Role / Device Role / Timing Role: Bidirectional level-shifting switch; used in open-collector configuration to interface mixed-voltage buses. Use Value: Supports clean signal transitions with <150 mV saturation drop - preserves timing margins in 1 MHz I²C-compatible bus applications. |
Use Scenario: Enabling/disabling analog sensor power rails in battery-operated wearables to minimize standby current. IC Role / Device Role / Timing Role: Low-leakage power switch; controls VCC to sensors using MCU GPIO with guaranteed off-state cutoff (ICEO ≤ 1 μA). Use Value: Reduces quiescent current to sub-μA levels during sleep mode - extends battery life by >20% in multi-sensor configurations. |
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 |
|---|---|---|---|
| PDTC124EK,115 | R1 = 22 kΩ, R2/R1 = 0.21, VCEO = 50 V, same SOT346 package | Lower input resistance increases base current draw - better suited for 1.8 V logic but less efficient at 3.3 V. | Select when driving from lower-voltage MCUs or requiring faster turn-on with higher IB. |
| MMBT3904LT1G | Discrete NPN BJT (no built-in resistors); hFE = 100–300, VCEO = 40 V, SOT23 package | Requires external base resistor network; offers higher gain but adds 2 components and layout complexity. | Select when precise gain control or higher VCEO tolerance is needed, and board space allows extra passives. |
Compared with PDTC144VK,115, PDTC124EK,115 provides lower input impedance for improved low-voltage drive, while MMBT3904LT1G offers greater flexibility in biasing at the cost of increased component count and design effort.
Availability
PDTC144VK,115 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, logic-level interface modules, and low-power sensor switching requiring stable component supply and long-term production continuity.
Supply support for PDTC144VK,115 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, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.
The PDTC144VK,115 belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to simplify digital switching designs by integrating precision bias networks into standardized SMD packages.
FAQ
What is the exact package type and footprint compatibility of PDTC144VK,115?
PDTC144VK,115 uses the SOT346 (JEITA SC-59A) package with 3 leads, 1.7 mm width, and 3.0 mm length. Its pinout (Pin 1 = base input, Pin 2 = emitter/GND, Pin 3 = collector output) matches standard SOT346 footprints - enabling direct substitution for other SOT346 RETs like PDTC124EK,115 without PCB modification.
Does PDTC144VK,115 require external base resistors for operation?
No - PDTC144VK,115 integrates R1 = 47 kΩ and R2 = 10 kΩ internally, forming a complete bias network. This eliminates the need for external base resistors in standard switching applications, reducing bill-of-materials count and improving layout reliability compared to discrete BJT solutions like MMBT3904LT1G.
What is the maximum continuous collector current rating for PDTC144VK,115?
The PDTC144VK,115 is rated for 100 mA DC output current (IO) under normal operating conditions. This value is specified in Table 2 (Quick reference data) and confirmed in Table 6 (Limiting values) of the official Nexperia datasheet, making it suitable for driving LEDs, small relays, and logic inputs without derating at ambient temperatures ≤25 °C.
How does the built-in resistor ratio R2/R1 = 0.21 affect PDTC144VK,115 performance?
The R2/R1 = 0.21 ratio in PDTC144VK,115 establishes a stable feedback path that improves saturation consistency and suppresses leakage-induced false turn-on. With R1 = 47 kΩ and R2 = 10 kΩ, this ratio ensures predictable hFE-independent switching behavior across temperature and process variations - critical for reliable operation in industrial-grade applications.
Can PDTC144VK,115 be used in 1.8 V logic systems?
PDTC144VK,115 has a typical VI(on) of 3.8 V and VI(off) of 3.1 V, making it unsuitable for direct 1.8 V logic drive. For 1.8 V systems, Nexperia's PDTC114EK,115 (VI(on) = 1.5 V typ) or PDTC124EK,115 (VI(on) = 2.2 V typ) are recommended alternatives - both share the same SOT346 package and pinout as PDTC144VK,115.
PDTC144VK,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:
- 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:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMT3; MPAK
PDTC144VK,115 FAQ
1.How can I place an order for PDTC144VK,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144VK,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 PDTC144VK,115 reliable?
The price and inventory of PDTC144VK,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144VK,115 is usually 5 days.
3.What payment methods are accepted for PDTC144VK,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144VK,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144VK,115?
PDTC144VK,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144VK,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 PDTC144VK,115?
For technical support, including PDTC144VK,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144VK,115 requirements.
6.How does Aetrix verify that PDTC144VK,115 is sourced from the original manufacturer or authorized distributors?
All PDTC144VK,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 PDTC144VK,115 meets industry standards.
7.What is the process for return or replacement of PDTC144VK,115?
All PDTC144VK,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144VK,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 PDTC144VK,115 part is unused and in its original packaging.
Return procedure for PDTC144VK,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144VK,115 Tags
-
MUN5211T1G
onsemi
-
DTC043ZEBTL
Rohm Semiconductor
-
DTC114EKAT146
Rohm Semiconductor
-
DDTD113ZC-7-F
Diodes Incorporated
-
DRDNB16W-7
Diodes Incorporated
-
PDTC114ET,215
Nexperia USA Inc.
-
PDTC143ZT,215
Nexperia USA Inc.
-
PDTC143ET,215
Nexperia USA Inc.
-
PDTC143XT,215
Nexperia USA Inc.
-
MMUN2211LT1G
onsemi
-
PDTC144ET,215
Nexperia USA Inc.
-
PDTC124ET,215
Nexperia USA Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
