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Nexperia USA Inc. PDTC144EU,115
- Part No.:
- PDTC144EU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC144EU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:55,519
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Product details
Overview
PDTC144EU from Nexperia is an NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, rated for 50 V VCEO, 100 mA output current, with integrated 47 kΩ input and feedback bias resistors (R1 = R2 = 47 kΩ). It functions as a single-chip digital switch for IC input control and load switching in industrial digital circuits.
For engineers reviewing the PDTC144EU datasheet, PDTC144EU pinout, PDTC144EU application, or PDTC144EU equivalent, this part serves as a space- and BOM-optimized replacement for discrete base-resistor + transistor configurations - especially where simplified drive logic, reduced pick-and-place count, and consistent DC current gain (hFE ≥ 80 at IC = 5 mA) are critical.
Technical Context
This RET integrates an NPN transistor with two monolithically embedded silicon resistors: R1 (input bias) and R2 (base-emitter feedback), forming a fixed-current-input configuration that eliminates external bias network design. Its internal topology enables direct TTL/CMOS-level drive without level-shifting or current-limiting resistors.
It operates within a −65 °C to +150 °C ambient range, delivers ≤150 mV VCE(sat) at IC = 10 mA / IB = 0.5 mA, and maintains stable off-state behavior with VI(off) ≤ 0.8 V and VI(on) ≥ 1.6 V - ensuring robust noise immunity and predictable switching thresholds across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; supports 24 V industrial bus switching with margin. |
| IO | 100 mA - Continuous output current rating; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 47 kΩ ±28% - Input bias resistor value; sets base current when driven from 3.3 V or 5 V logic. |
| R2/R1 | 1.0 ±0.2 - Feedback-to-input resistor ratio; ensures stable saturation and prevents thermal runaway. |
| hFE | ≥80 at VCE = 5 V, IC = 5 mA - Minimum DC current gain; guarantees reliable on-state operation under standard conditions. |
| VCE(sat) | ≤150 mV at IC = 10 mA, IB = 0.5 mA - Low saturation voltage minimizes power loss and self-heating during conduction. |
| Ptot | 200 mW at Tamb = 25 °C - Total power dissipation limit on FR4 PCB; derates linearly above 25 °C per 625 K/W θj-a. |
Pinout & Package
The PDTC144EU is housed in a compact SOT323 (SC-70) surface-mount plastic package measuring 2.0 mm × 1.25 mm × 0.95 mm, optimized for high-density PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Connected internally to R1; accepts logic-level drive directly - no external series resistor required. |
| 2 | Ground (emitter) | Emitter terminal tied to system ground; provides return path for both transistor current and bias network. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode or relay coil) referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors (R1 = R2 = 47 kΩ) | Eliminates need for two external SMD resistors, reducing board area and assembly steps. |
| 100 mA output current capability | Supports direct switching of moderate loads such as status indicators, small solenoids, or logic buffers. |
| VCE(sat) ≤ 150 mV @ IC = 10 mA | Minimizes conduction loss and thermal stress in battery-powered or thermally constrained designs. |
| VI(on) ≥ 1.6 V, VI(off) ≤ 0.8 V | Provides clear logic-level compatibility with 3.3 V and 5 V CMOS/TTL families without added hysteresis. |
| SOT323 (SC-70) footprint | Enables high-density routing and automated placement compatible with standard 0.65 mm pitch reflow profiles. |
Applications
| Industrial Digital Control | IC Input Conditioning |
|---|---|
Use Scenario: Controlling enable/disable signals for PLC I/O modules and sensor interface circuitry in factory automation systems. IC Role / Device Role / Timing Role: Acts as a buffered, current-limited digital switch translating microcontroller GPIO outputs to isolated 24 V logic levels. Use Value: Reduces component count by replacing discrete transistor + dual-resistor networks while maintaining noise-immune switching thresholds. |
Use Scenario: Driving Schmitt-trigger inputs or high-impedance enable pins on analog switches, ADCs, or power management ICs. IC Role / Device Role / Timing Role: Provides clean, slew-controlled logic transitions with defined VI(on)/VI(off) margins to prevent metastability. Use Value: Ensures reliable signal conditioning without external pull-up/pull-down resistors or RC filtering components. |
| LED Status Indication | Low-Power Load Switching |
Use Scenario: Driving multi-color status LEDs on HMI panels and embedded instrumentation displays. IC Role / Device Role / Timing Role: Functions as a constant-current sink switch with low VCE(sat) to maximize LED forward voltage headroom. Use Value: Delivers consistent brightness across supply variations while minimizing thermal rise on 0402/0603 PCB footprints. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., 3.3 V sensor supplies) in portable test equipment and IoT edge nodes. IC Role / Device Role / Timing Role: Serves as a low-leakage, fast-turnoff load switch with <5 µA ICEO at 150 °C junction temperature. Use Value: Supports ultra-low standby power budgets (<1 µA system sleep current) without requiring additional gate-drive circuitry. |
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 |
|---|---|---|---|
| BC847B,115 | Discrete NPN transistor without built-in resistors; requires external RB and RBE network. | Higher BOM count and layout complexity; less immune to trace parasitics in high-noise environments. | Select when fine-tuned biasing or adjustable gain is needed beyond fixed RET topology. |
| PDTA144EU,115 | PNP complement with identical R1/R2 values and SOT323 package; VCEO = −50 V, IO = −100 mA. | Used for high-side switching or inverted logic paths; not interchangeable without circuit redesign. | Choose for complementary rail control where sourcing (not sinking) current is required. |
Compared with BC847B,115, PDTC144EU reduces layout area and assembly cost but sacrifices bias flexibility; versus PDTA144EU, it provides matched electrical specs in opposite polarity - enabling symmetrical dual-rail driver designs without cross-manufacturer sourcing.
Availability
PDTC144EU is available at Aetrix Electronics and suitable for industrial digital control, IC input conditioning, LED status indication, and low-power load switching requiring stable component supply and long-term production continuity.
Supply support for PDTC144EU 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 semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The PDTC144EU belongs to Nexperia's Resistor-Equipped Transistor (RET) family, designed specifically to replace discrete transistor + bias resistor combinations in cost-sensitive, space-constrained digital interface applications.
FAQ
What is the maximum operating temperature for PDTC144EU?
The PDTC144EU has a maximum junction temperature (Tj) of 150 °C and an ambient operating range of −65 °C to +150 °C. Its thermal resistance from junction to ambient is 625 K/W on a standard FR4 PCB, meaning power dissipation must be derated above 25 °C ambient to stay within safe limits.
Can PDTC144EU replace BC847 in existing designs without modification?
No - PDTC144EU cannot be used as a drop-in replacement for BC847 because it integrates bias resistors and uses a different pinout (input/base on pin 1, emitter on pin 2, collector on pin 3). Circuit redesign is required to remove external bias resistors and verify logic-level compatibility with VI(on)/VI(off) thresholds.
Is PDTC144EU automotive qualified?
No - PDTC144EU is explicitly marked as non-automotive qualified in its revision history. It is intended for industrial and general-purpose applications only. For automotive use, Nexperia offers Q-grade variants (e.g., PDTC144EU-Q) with extended qualification testing and AEC-Q101 compliance.
What is the typical transition frequency (fT) of the internal transistor?
The internal NPN transistor has a typical transition frequency fT of 230 MHz at VCE = 5 V and IC = 10 mA. This reflects the high-speed capability of the bare die, though the overall switching performance in digital applications is dominated by RC time constants of the integrated bias network.
PDTC144EU,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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):
- 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:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC144EU,115 FAQ
1.How can I place an order for PDTC144EU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144EU,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 PDTC144EU,115 reliable?
The price and inventory of PDTC144EU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144EU,115 is usually 5 days.
3.What payment methods are accepted for PDTC144EU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144EU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144EU,115?
PDTC144EU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144EU,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 PDTC144EU,115?
For technical support, including PDTC144EU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144EU,115 requirements.
6.How does Aetrix verify that PDTC144EU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC144EU,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 PDTC144EU,115 meets industry standards.
7.What is the process for return or replacement of PDTC144EU,115?
All PDTC144EU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144EU,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 PDTC144EU,115 part is unused and in its original packaging.
Return procedure for PDTC144EU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144EU,115 Tags
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