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Nexperia USA Inc. PDTC144TT,215
- Part No.:
- PDTC144TT,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC144TT,215.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:669
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Product details
Overview
PDTC144TT from Nexperia is an NPN resistor-equipped transistor with integrated 47 kΩ base bias resistor (R1), open R2 configuration, 50 V VCEO, 100 mA IO, and SOT23 package - designed for compact DC switching in logic-level interface circuits such as microcontroller GPIO drivers.
For engineers reviewing the PDTC144TT datasheet, PDTC144TT pinout, PDTC144TT application, or PDTC144TT equivalent, key selection criteria include built-in biasing topology, thermal resistance (500 K/W), DC current gain (hFE ≥ 100 at 1 mA), saturation voltage (≤150 mV), and SOT23 footprint compatibility with high-density PCB layouts.
Technical Context
This device integrates a single NPN bipolar junction transistor with a precision 47 kΩ pull-up base resistor (R1) and no second resistor (R2 = open), enabling direct connection to TTL/CMOS logic without external bias components. It operates as a digital switch with guaranteed turn-on at IB ≥ 0.5 mA and VCE(sat) ≤ 150 mV under 10 mA load.
Its SOT23 package supports reflow soldering only, with thermal resistance of 500 K/W (junction-to-ambient), limiting continuous power dissipation to 250 mW at Tamb ≤ 25 °C. Cutoff leakage is specified at ICEO ≤ 1 μA (VCE = 30 V, IB = 0) and ICBO ≤ 100 nA (VCB = 50 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage before breakdown; enables use in 24 V industrial control rails. |
| IO | 100 mA DC - Continuous output current rating; sufficient for driving LEDs, small relays, or logic buffers. |
| R1 | 47 kΩ ±25% - Integrated base bias resistor; eliminates need for external resistor and reduces BOM count by one component. |
| hFE | ≥100 at VCE = 5 V, IC = 1 mA - Minimum DC current gain ensures reliable saturation with low base drive current. |
| VCE(sat) | ≤150 mV at IC = 10 mA, IB = 0.5 mA - Low saturation voltage minimizes power loss and self-heating in switching mode. |
| Ptot | 250 mW at Tamb ≤ 25 °C - Total power dissipation limit in SOT23 package; requires thermal derating above ambient. |
Pinout & Package
PDTC144TT uses the standard SOT23 plastic surface-mounted package (3 leads), measuring 2.9 × 1.3 × 1.0 mm, optimized for automated placement and reflow-only assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Input node connected to internal R1 | Accepts logic-level input; R1 pulls base high when un-driven, but device remains off until active low signal or current sink applied. |
| 2 (Emitter) | Common emitter reference terminal | Connected to ground or low-side return path; defines current sink path for load connected between VCC and collector. |
| 3 (Collector) | Output current sink terminal | Drives load to ground; rated for 50 V and 100 mA DC, supporting common-emitter switching topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in 47 kΩ base bias resistor (R1) | Reduces external component count by one resistor per switch channel, lowering PCB area and assembly cost. |
| No R2 (open configuration) | Enables simple high-side logic-compatible drive: base pulled up internally, activated by sinking current from base to ground. |
| VCEO = 50 V, IO = 100 mA | Supports 24 V industrial I/O and 5 V/3.3 V logic interfacing without additional level-shifting circuitry. |
| SOT23 package with 500 K/W Rth(j-a) | Enables high-density routing on space-constrained boards while maintaining thermal safety margin up to 250 mW. |
Applications
| Microcontroller GPIO Driver | LED Indicator Control |
|---|---|
|
Use Scenario: Driving discrete LEDs from 3.3 V or 5 V MCU pins with limited sink/source capability. IC Role / Device Role / Timing Role: NPN switch configured in common-emitter mode, sinking current from LED anode to ground. Use Value: Eliminates need for external base resistor; ensures consistent turn-on with <1 µA standby leakage and <150 mV drop at 20 mA LED current. |
Use Scenario: Controlling status indicators in consumer electronics where board space and BOM count are critical. IC Role / Device Role / Timing Role: Low-power digital switch enabling fast on/off transitions with minimal propagation delay (<100 ns typical). Use Value: Reduces footprint vs. discrete transistor + resistor solution; maintains brightness consistency across temperature due to stable hFE ≥ 100. |
| Logic-Level Signal Inverter | Small-Signal Load Switch |
|
Use Scenario: Converting active-high logic signals to active-low outputs in mixed-voltage systems (e.g., 3.3 V MCU to 5 V peripheral). IC Role / Device Role / Timing Role: Inverting buffer using emitter-follower or common-emitter configuration with defined threshold via R1. Use Value: Provides clean inversion with rail-to-rail swing and <1 µA input leakage, avoiding floating inputs or unintended toggling. |
Use Scenario: Enabling/disabling power to sensors, transceivers, or analog front-ends in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Low-leakage load switch controlling VCC path to downstream circuitry via collector-emitter path. Use Value: Achieves <1 µA off-state current (ICEO) and <150 mV on-state drop, minimizing quiescent power loss in always-on subsystems. |
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 |
|---|---|---|---|
| PDTC143TK,215 | R1 = 47 kΩ (same), but packaged in SOT346 (larger footprint, 500 K/W Rth(j-a)) | Less suitable for ultra-dense layouts; better thermal margin at same power level due to larger pad area. | Select when board layout allows SC-59 footprint and higher thermal robustness is prioritized over miniaturization. |
| MMBT3904LT1G | No integrated resistors; requires external 47 kΩ base resistor and different bias network design. | Higher BOM count and layout complexity; used where adjustable bias or dual-resistor (R1+R2) configuration is needed. | Select only if design requires configurable base bias or compatibility with legacy discrete transistor footprints. |
Compared with PDTC144TT, PDTC143TK offers identical electrical behavior but relaxed thermal constraints in a larger package, while MMBT3904LT1G demands full external bias design - making PDTC144TT optimal for fixed-ratio, space-constrained, low-component-count switching.
Availability
PDTC144TT is available at Aetrix Electronics and suitable for microcontroller GPIO drivers, LED indicator control, and logic-level signal inverters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for PDTC144TT 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.
PDTC144TT belongs to the PDTC144T series of resistor-equipped transistors, engineered specifically for simplified digital switching in space-constrained, high-volume applications like portable electronics and smart peripherals.
FAQ
Is PDTC144TT compatible with lead-free reflow soldering processes?
Yes, PDTC144TT is qualified for lead-free reflow soldering only - wave or hand-soldering is not recommended. Its SOT23 package meets JEDEC J-STD-020 moisture sensitivity level 1 and supports peak reflow temperatures up to 260 °C per standard profiles.
What is the maximum operating temperature for continuous operation?
The absolute maximum junction temperature is 150 °C, and the storage temperature range is −65 °C to +150 °C. At ambient temperatures above 25 °C, power dissipation must be linearly derated from 250 mW using the 500 K/W thermal resistance value.
Does PDTC144TT have a built-in emitter resistor (R2)?
No - PDTC144TT has R1 = 47 kΩ and R2 = open, meaning only a single base pull-up resistor is integrated. This configuration supports simple low-side switching where the base is actively pulled to ground to turn on the transistor.
Can PDTC144TT replace a standard BJT like BC847 in existing designs?
Only with schematic modification: PDTC144TT's integrated R1 changes biasing behavior. Direct substitution requires removing the external base resistor and verifying that drive strength and saturation voltage meet system requirements - it is not a drop-in replacement for discrete BJTs.
PDTC144TT,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):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- 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
PDTC144TT,215 FAQ
1.How can I place an order for PDTC144TT,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144TT,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 PDTC144TT,215 reliable?
The price and inventory of PDTC144TT,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144TT,215 is usually 5 days.
3.What payment methods are accepted for PDTC144TT,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144TT,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144TT,215?
PDTC144TT,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144TT,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 PDTC144TT,215?
For technical support, including PDTC144TT,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144TT,215 requirements.
6.How does Aetrix verify that PDTC144TT,215 is sourced from the original manufacturer or authorized distributors?
All PDTC144TT,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 PDTC144TT,215 meets industry standards.
7.What is the process for return or replacement of PDTC144TT,215?
All PDTC144TT,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144TT,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 PDTC144TT,215 part is unused and in its original packaging.
Return procedure for PDTC144TT,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144TT,215 Tags
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