My Inquiry
My Account
NXP Semiconductors PDTC144ES,126
,TO-226_straightlead.jpg)
- Part No.:
- PDTC144ES,126
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
PDTC144ES,126.pdf
- Description:
- TRANS PREBIAS NPN 50V TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,844
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PDTC144ES,126 from NXP Semiconductors (formerly Philips) is an NPN resistor-equipped transistor in TO-92 (SOT54) package with integrated 47 kΩ base bias resistors R1 and R2, rated for 50 V VCEO, 100 mA IO, and 500 mW Ptot at Tamb ≤25 °C, used for general-purpose switching in interface circuits and logic-level drivers.
For engineers reviewing the PDTC144ES,126 datasheet, PDTC144ES,126 pinout, PDTC144ES,126 application, or PDTC144ES,126 equivalent, key selection factors include its through-hole SOT54 package, built-in dual 47 kΩ bias network, guaranteed hFE ≥80 at IC = 5 mA, VCEsat ≤150 mV, and input-off voltage Vi(off) = 0.8–1.2 V for reliable TTL/CMOS-compatible switching.
Technical Context
The PDTC144ES,126 integrates two precision 47 kΩ resistors (R1 between base and input, R2 between base and emitter) to form a single-chip digital transistor solution, eliminating external bias components. Its internal resistor ratio is tightly controlled at 0.8–1.2, ensuring stable turn-on/turn-off thresholds across temperature.
Designed for DC switching and low-frequency amplification, it operates with VEB0 ≤10 V, supports input voltage range from −10 V to +40 V, and maintains ICBO ≤100 nA and ICEO ≤1 µA at 25 °C - enabling robust noise immunity in industrial control and sensor interface applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V maximum - supports rail-to-rail switching up to 5 V logic with safety margin |
| IO | 100 mA DC output - drives LEDs, relays, or small-signal MOSFET gates directly |
| R1 / R2 | 47 kΩ ±24% - provides fixed-current biasing without external resistors |
| hFE | ≥80 at VCE = 5 V, IC = 5 mA - ensures sufficient current gain for saturated switching |
| VCEsat | ≤150 mV at IC = 10 mA, IB = 0.5 mA - minimizes power loss and self-heating in on-state |
| Ptot | 500 mW at Tamb ≤25 °C - enables operation in ambient temperatures up to +150 °C with derating |
Pinout & Package
PDTC144ES,126 uses the plastic single-ended leaded (through-hole) SOT54 (TO-92) package with 3 leads, 5.2 mm body length, and standard 2.54 mm lead pitch. Thermal resistance Rth(j-a) is 250 K/W in free air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Input node connected internally to R1 (47 kΩ) and R2 (47 kΩ); accepts logic-level drive |
| 2 | Collector | High-side switch output; connects to load supply rail |
| 3 | Emitter | Common return path; tied to ground or low-side reference |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Dual 47 kΩ resistors eliminate need for two external components and reduce PCB footprint |
| TTL/CMOS-compatible input | Vi(on) = 1.6–3.0 V and Vi(off) = 0.8–1.2 V enable direct interfacing with 3.3 V/5 V logic families |
| Low saturation voltage | VCEsat ≤150 mV ensures <15 mW conduction loss at 100 mA, improving efficiency in battery-powered systems |
| Through-hole reliability | SOT54 (TO-92) package offers mechanical robustness and thermal stability for prototyping and legacy designs |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving multiple indicator LEDs from 3.3 V or 5 V microcontroller outputs with current limiting. IC Role / Device Role / Timing Role: NPN digital transistor acting as low-side switch, replacing discrete BJT + two resistors. Use Value: Reduces component count by 2 per channel and eliminates resistor tolerance stacking errors in LED current setting. | Use Scenario: Extending limited GPIO count of an MCU to control higher-current peripherals like solenoids or fans. IC Role / Device Role / Timing Role: Logic-level translator and current amplifier, accepting MCU output and delivering up to 100 mA to load. Use Value: Enables direct connection without level-shifting circuitry and guarantees fast turn-on/turn-off due to optimized R1/R2 ratio. |
| Industrial Sensor Interface | Power Supply Enable Control |
Use Scenario: Isolating and conditioning open-collector sensor outputs (e.g., proximity switches) before feeding to PLC inputs. IC Role / Device Role / Timing Role: Signal conditioner and voltage-level shifter, converting 24 V sensor signals to 3.3 V/5 V logic levels. Use Value: Built-in 50 V VCEO rating and −10 V to +40 V input voltage range allow safe operation with industrial field voltages. | Use Scenario: Enabling/disabling auxiliary power rails (e.g., 12 V fan supply or 5 V peripheral bus) under MCU command. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling power path to downstream subsystems. Use Value: 500 mW power dissipation and 150 °C junction temperature rating support continuous operation in enclosed power modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN digital transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBT3904LT1G | Discrete NPN BJT with no built-in resistors; requires external RB and RE | Higher design flexibility but increases component count and layout area | Select when precise bias tuning or high-speed switching (>100 MHz) is required |
| PDTC124ES,126 | Same SOT54 package but with R1 = R2 = 22 kΩ; lower input threshold (Vi(on) ≈ 1.0–2.2 V) | Better compatibility with 1.8 V/2.5 V logic; reduced input current at same VIN | Select for ultra-low-voltage microcontrollers or battery-sensitive applications |
Compared with MMBT3904LT1G and PDTC124ES,126, the PDTC144ES,126 delivers optimal balance of 5 V logic compatibility, compact through-hole integration, and predictable switching thresholds - making it ideal for cost-sensitive, space-constrained industrial control boards where design simplicity and supply chain continuity matter.
Availability
PDTC144ES,126 is available at Aetrix Electronics and suitable for industrial sensor interfaces, LED driver modules, microcontroller GPIO expansion, and power supply enable circuits requiring stable component supply and long-term manufacturability.
Supply support for PDTC144ES,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
NXP Semiconductors is a global semiconductor company formed from the spin-off of Philips' semiconductor division, specializing in secure connectivity solutions, automotive ICs, and analog/mixed-signal components.
The PDTC144ES,126 belongs to NXP's resistor-equipped transistor (RET) product line, designed specifically to simplify digital switching designs by integrating biasing networks into standard transistor packages for industrial, consumer, and computing applications.
FAQ
What is the package type and lead configuration of PDTC144ES,126?
PDTC144ES,126 uses the SOT54 (TO-92) through-hole plastic package with three leads arranged in linear order: Pin 1 is Base, Pin 2 is Collector, and Pin 3 is Emitter. The package has a 2.54 mm lead pitch and 5.2 mm body length, conforming to JEDEC TO-92 standards and supporting wave soldering and manual assembly.
Does PDTC144ES,126 require external bias resistors for basic switching operation?
No, PDTC144ES,126 does not require external bias resistors. It integrates two 47 kΩ resistors - R1 between base and input, and R2 between base and emitter - forming a complete digital transistor structure. This allows direct connection to 3.3 V or 5 V logic outputs without additional components, reducing bill-of-materials and layout complexity.
What is the maximum continuous collector current rating for PDTC144ES,126?
The maximum continuous collector current (IO) for PDTC144ES,126 is 100 mA under DC conditions. This rating applies at Tamb ≤25 °C with proper PCB thermal relief. At elevated ambient temperatures, current must be derated per the device's thermal resistance (Rth(j-a) = 250 K/W) to maintain junction temperature below 150 °C.
Can PDTC144ES,126 be used with 3.3 V microcontroller GPIO pins?
Yes, PDTC144ES,126 is compatible with 3.3 V microcontroller GPIO pins. Its Vi(on) is specified as 1.6–3.0 V at IC = 2 mA, ensuring reliable turn-on with typical 3.3 V logic high levels. The integrated 47 kΩ bias network draws only ~70 µA from a 3.3 V source, minimizing loading on the driving pin.
What is the collector-emitter saturation voltage (VCEsat) of PDTC144ES,126 under typical operating conditions?
The collector-emitter saturation voltage (VCEsat) of PDTC144ES,126 is guaranteed ≤150 mV at IC = 10 mA and IB = 0.5 mA. This low saturation voltage reduces conduction losses and self-heating, supporting efficient operation in LED drivers, relay drivers, and other medium-current switching applications.
PDTC144ES,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):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 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
PDTC144ES,126 FAQ
1.How can I place an order for PDTC144ES,126 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144ES,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 PDTC144ES,126 reliable?
The price and inventory of PDTC144ES,126 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144ES,126 is usually 5 days.
3.What payment methods are accepted for PDTC144ES,126?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144ES,126 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144ES,126?
PDTC144ES,126 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144ES,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 PDTC144ES,126?
For technical support, including PDTC144ES,126 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144ES,126 requirements.
6.How does Aetrix verify that PDTC144ES,126 is sourced from the original manufacturer or authorized distributors?
All PDTC144ES,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 PDTC144ES,126 meets industry standards.
7.What is the process for return or replacement of PDTC144ES,126?
All PDTC144ES,126 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144ES,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 PDTC144ES,126 part is unused and in its original packaging.
Return procedure for PDTC144ES,126:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144ES,126 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…
