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Nexperia USA Inc. PDTC124TU,115
- Part No.:
- PDTC124TU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC124TU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:1,900
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Product details
Overview
PDTC124TU,115 from Nexperia is an NPN resistor-equipped transistor with integrated 22 kΩ base bias resistor (R1), open R2 configuration, 50 V VCEO, 100 mA IO, and SOT323 (SC-70) package - used for compact logic-level switching in space-constrained interface circuits.
For engineers reviewing the PDTC124TU,115 datasheet, PDTC124TU,115 pinout, PDTC124TU,115 application, or PDTC124TU,115 equivalent, key selection criteria include built-in bias resistor value, thermal resistance (625 K/W), collector-emitter saturation voltage (≤150 mV at 10 mA), and SOT323 footprint compatibility with high-density PCB layouts.
Technical Context
This device integrates a single NPN silicon transistor with a precision 22 kΩ pull-up base resistor (R1) and no second resistor (R2 = open), enabling direct TTL/CMOS logic-level drive without external bias components. It operates as a digital switch with guaranteed DC current gain ≥100 at IC = 1 mA.
Designed for reflow-solder-only assembly per JEDEC J-STD-020, it supports ambient temperatures from −65 °C to +150 °C and exhibits low leakage: ICEO ≤ 1 μA at VCE = 30 V and ≤50 μA at Tj = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - supports switching of 24 V industrial control signals with 2× safety margin. |
| IO (DC) | 100 mA - drives LED indicators, small relays, or gate inputs without external current limiting. |
| R1 | 22 kΩ ±30% - sets base current for reliable saturation with 3.3 V or 5 V logic outputs. |
| VCEsat | ≤150 mV at IC = 10 mA, IB = 0.5 mA - ensures <0.15 V drop for low-power signal routing. |
| Rth(j-a) | 625 K/W - requires minimal copper area for thermal management in SOT323 layout. |
| hFE | ≥100 at VCE = 5 V, IC = 1 mA - guarantees robust turn-on under worst-case temperature and process variation. |
Pinout & Package
PDTC124TU,115 uses the SOT323 (SC-70) plastic surface-mounted package - 3-lead, 1.3 mm × 0.95 mm × 0.5 mm body, optimized for automated placement and reflow soldering on fine-pitch PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Internal connection to R1 resistor | Accepts logic input; R1 pulls base high when un-driven - enables active-low switching topology. |
| 2 (Emitter) | Emitting terminal of NPN transistor | Connected to ground reference; forms common-emitter switch node with collector load. |
| 3 (Collector) | Output terminal sourcing current to load | Drives loads (e.g., LED anode, MCU input) when saturated; rated for 50 V standoff and 100 mA DC. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in 22 kΩ base bias resistor | Eliminates need for external pull-up resistor, reducing BOM count by one passive component per channel. |
| SOT323 (SC-70) footprint | Enables 0.65 mm pitch routing and fits within 1.3 × 0.95 mm PCB area - ideal for wearables and sensor nodes. |
| VCEsat ≤ 150 mV @ 10 mA | Minimizes power loss (<1.5 mW) and self-heating during sustained ON-state operation. |
| Guaranteed hFE ≥ 100 | Ensures full saturation with standard logic drive levels (e.g., 3.3 V GPIO), even at elevated junction temperatures. |
Applications
| LED Indicator Driver | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Driving status LEDs from low-current MCU pins in battery-powered IoT sensors. IC Role / Device Role: NPN switch sinking current from LED anode to ground. Use Value: Built-in 22 kΩ resistor allows direct connection to 3.3 V GPIO without external components - saves 0.5 mm² board area per LED. |
Use Scenario: Adding discrete output channels to resource-constrained microcontrollers with limited GPIO. IC Role / Device Role: Logic-level translator and current amplifier for driving higher-load peripherals. Use Value: 100 mA output capability and ≤150 mV VCEsat enable reliable activation of optocouplers or small solenoids without additional drivers. |
| Level-Shifting Interface | Power Supply Enable Control |
|
Use Scenario: Translating 1.8 V FPGA I/O to 5 V peripheral logic inputs in mixed-voltage systems. IC Role / Device Role: Active-low level shifter using emitter-follower or common-emitter configuration. Use Value: 50 V VCEO rating and guaranteed hFE support stable operation across 1.8–5 V logic domains with minimal propagation delay. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., 3.3 V analog supply) via MCU-controlled switch. IC Role / Device Role: High-side or low-side enable switch controlling PMIC EN pin or LDO input. Use Value: Low VCEsat ensures <10 mV dropout on enable path - critical for maintaining tight voltage regulation margins. |
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 |
|---|---|---|---|
| PDTC143TU,115 | R1 = 47 kΩ (vs. 22 kΩ); same SOT323 package, VCEO = 50 V, IO = 100 mA | Higher input impedance - better suited for weak-drive sources (e.g., 1.8 V CMOS), but slower turn-on at 3.3 V | Select when driving from ultra-low-current logic families or where reduced base current minimizes source loading. |
| EMH11T2R | R1 = 10 kΩ; SOT-323 package; VCEO = 50 V; IO = 100 mA; hFE ≥ 160 | Lower R1 increases base drive - faster switching and lower VCEsat (≤100 mV), but draws more input current | Prefer for high-speed switching (>1 MHz) or lowest possible conduction loss where input drive strength permits. |
Compared with PDTC124TU,115, PDTC143TU,115 trades base drive strength for higher input impedance, while EMH11T2R prioritizes speed and saturation performance at the cost of increased input current - choice depends on source drive capability and timing requirements.
Availability
PDTC124TU,115 is available at Aetrix Electronics and suitable for LED indicator control, microcontroller GPIO expansion, and level-shifting interface applications requiring stable component supply and long-term production continuity.
Supply support for PDTC124TU,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.
PDTC124TU,115 belongs to the PDTC124T series of resistor-equipped transistors - engineered for simplified digital switching in high-volume, space-constrained applications where bill-of-materials reduction is critical.
FAQ
Is PDTC124TU,115 compatible with lead-free reflow soldering processes?
Yes - PDTC124TU,115 is qualified for lead-free reflow soldering per JEDEC J-STD-020, with peak temperature tolerance up to 260 °C. The SOT323 package uses matte tin termination and is rated for standard Pb-free profiles; hand soldering is not recommended due to thermal stress sensitivity.
What is the maximum allowable continuous collector current at 85 °C ambient?
At Tamb = 85 °C, derated power dissipation limits IC to approximately 63 mA. This is calculated from Ptot = 200 mW (SOT323), Rth(j-a) = 625 K/W, and Tj(max) = 150 °C: ΔT = 65 K → Pderated = 65 K / 625 K/W = 104 mW; assuming VCEsat ≈ 0.15 V, IC = 104 mW / 0.15 V ≈ 69 mA - conservatively rounded to 63 mA per industry practice.
Can PDTC124TU,115 be used in linear amplification mode?
No - PDTC124TU,115 is characterized and specified only for switching applications. Its hFE is guaranteed only at IC = 1 mA, and the integrated R1 resistor prevents stable DC biasing for analog amplification. Use standard NPN transistors like BC847 for linear gain stages.
Does the "115" suffix indicate tape-and-reel packaging?
Yes - the "115" suffix denotes 3,000-piece 8 mm tape-and-reel packaging per IEC 60286-3, with EIA-481-1 compliance. This format is optimized for high-speed pick-and-place assembly and includes moisture sensitivity level (MSL) 1 rating for indefinite floor life at ≤30 °C/60% RH.
PDTC124TU,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):
- 22 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:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC124TU,115 FAQ
1.How can I place an order for PDTC124TU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124TU,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 PDTC124TU,115 reliable?
The price and inventory of PDTC124TU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124TU,115 is usually 5 days.
3.What payment methods are accepted for PDTC124TU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124TU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124TU,115?
PDTC124TU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124TU,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 PDTC124TU,115?
For technical support, including PDTC124TU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124TU,115 requirements.
6.How does Aetrix verify that PDTC124TU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC124TU,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 PDTC124TU,115 meets industry standards.
7.What is the process for return or replacement of PDTC124TU,115?
All PDTC124TU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124TU,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 PDTC124TU,115 part is unused and in its original packaging.
Return procedure for PDTC124TU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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