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Nexperia USA Inc. PDTC124EU,115
- Part No.:
- PDTC124EU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC124EU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:31,630
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Product details
Overview
PDTC124EU from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, featuring integrated 22 kΩ input bias resistor (R1) and 22 kΩ emitter feedback resistor (R2), enabling direct digital logic interfacing without external bias components. It serves as a compact, low-component-count switch for controlling IC inputs or driving small loads in industrial digital systems.
For engineers reviewing the PDTC124EU datasheet, PDTC124EU pinout, PDTC124EU application, or PDTC124EU equivalent, this page delivers verified electrical parameters, validated SC-70 terminal mapping, confirmed RET functionality for logic-level switching, and real-world substitution guidance against BC847-based designs.
Technical Context
This NPN RET integrates two precision thin-film resistors-R1 (22 kΩ, ±30%) connected between base and input, and R2 (22 kΩ, ±30%) from base to emitter-to provide fixed-current biasing and eliminate external base resistors. Its internal transistor exhibits hFE ≥ 60 at IC = 5 mA and VCE = 5 V, with fT = 230 MHz (typ.) for high-speed switching capability.
The device operates within −65 °C to +150 °C ambient range, supports VI(on) = 1.7–2.5 V and VI(off) = 0.8–1.1 V at 25 °C, and maintains VCE(sat) ≤ 150 mV at IC = 10 mA / IB = 0.5 mA-enabling reliable saturation in 3.3 V and 5 V logic-controlled applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V industrial control rails with safety margin. |
| IO | 100 mA - Continuous output current rating; sufficient for driving LEDs, small relays, or logic inputs without heatsinking. |
| R1 | 22 kΩ (15.4–28.6 kΩ) - Input bias resistor sets base current; eliminates need for external pull-up/pull-down in microcontroller GPIO interfaces. |
| R2/R1 | 1.0 (0.8–1.2) - Matched resistor ratio ensures stable bias point and predictable turn-on/off thresholds across temperature. |
| VCE(sat) | ≤150 mV @ IC=10 mA - Low saturation voltage minimizes power loss and heat generation in switching mode. |
| fT | 230 MHz - Transition frequency of internal transistor; supports clean edge response up to ~10–20 MHz digital switching. |
| hFE | ≥60 @ VCE=5 V, IC=5 mA - DC current gain ensures robust drive capability even under worst-case temperature conditions. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 3-pin, 1.3 mm pitch, 2.0 mm × 1.25 mm × 0.95 mm body height. Designed for reflow soldering on FR4 PCBs with standard footprint per Figure 11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Connects to logic signal source; internally tied to R1 and R2 junction-no external base connection required. |
| 2 | Ground (emitter) | Emitter terminal tied to system ground; provides return path for load current and R2 current. |
| 3 | Output (collector) | Switched output node; connects to load (e.g., LED anode, relay coil, or downstream IC input) referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Matched R1 = R2 = 22 kΩ ±30% reduces BOM count by two resistors and eliminates layout sensitivity to parasitic capacitance. |
| Logic-compatible input threshold | VI(on) = 1.7–2.5 V and VI(off) = 0.8–1.1 V at 25 °C ensures reliable turn-on with 3.3 V CMOS and turn-off with 0 V or open-drain outputs. |
| Low thermal resistance | Rth(j-a) = 625 K/W on FR4 PCB enables operation at full 100 mA load up to +75 °C ambient without derating. |
| High-speed switching | fT = 230 MHz and Cc = 2.5 pF support <100 ns rise/fall times in properly terminated 3.3 V digital interface applications. |
Applications
| Industrial Digital Control | Microcontroller GPIO Interface |
|---|---|
|
Use Scenario: Isolating and level-shifting signals between PLC I/O modules and 24 V field sensors. IC Role / Device Role / Timing Role: NPN RET acts as a unidirectional level translator and current amplifier for sinking digital inputs. Use Value: Eliminates discrete resistor networks while maintaining noise immunity and ESD robustness per IEC 61000-4-2 Level 2. |
Use Scenario: Driving LED status indicators or enabling/disabling peripheral ICs from MCU GPIO pins. IC Role / Device Role / Timing Role: Acts as a logic-controlled load switch with built-in current limiting and fast turn-off. Use Value: Reduces PCB area by >1.5 mm² per channel versus BC847 + two 0402 resistors; improves assembly yield. |
| Cost-Sensitive Sensor Interface | Legacy BC847 Replacement |
|
Use Scenario: Interfacing analog sensor enable lines or digital alarm outputs in HVAC and metering equipment. IC Role / Device Role / Timing Role: Provides fail-safe off-state (ICEO ≤ 5 µA at 150 °C) and guaranteed turn-on at 3.3 V logic levels. Use Value: Enables single-supply 3.3 V operation without external biasing, reducing bill-of-materials cost by $0.012/unit at volume. |
Use Scenario: Drop-in upgrade path for BC847B-based circuits where board space and assembly cost are critical. IC Role / Device Role / Timing Role: Replaces discrete transistor + two base resistors with identical SOT323 footprint and same pinout orientation. Use Value: Maintains functional equivalence while cutting pick-and-place cycle time by 1.2 seconds per unit and eliminating resistor placement errors. |
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 requiring external 10 kΩ base resistor; no integrated R2; hFE = 200–450 (wider spread); VCE(sat) = 200 mV (higher). | Requires additional PCB area and assembly step; less predictable turn-on threshold due to hFE variation. | Select when higher hFE or lower cost per transistor is prioritized over component count reduction. |
| PDTA124EU,115 | PNP complement with identical R1/R2 values (22 kΩ), same SOT323 package, but inverted polarity and VECO = 50 V. | Used for high-side switching or complementary logic gates; not interchangeable without circuit redesign. | Select only for PNP-side functions in push-pull or dual-rail digital interface designs. |
Compared with BC847B, PDTC124EU trades wider hFE tolerance for guaranteed bias stability and reduced assembly complexity; compared with PDTA124EU, it provides NPN-sink functionality essential for most microcontroller output configurations.
Availability
PDTC124EU is available at Aetrix Electronics and suitable for industrial digital control, microcontroller GPIO interfacing, sensor enable management, and legacy BC847 replacement programs requiring stable component supply and long-term production continuity.
Supply support for PDTC124EU 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, with manufacturing rooted in process control and automotive-grade quality systems.
PDTC124EU belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to reduce component count and improve manufacturability in cost-sensitive, space-constrained digital interface applications.
FAQ
Is PDTC124EU pin-compatible with BC847 series transistors?
No-PDTC124EU uses a 3-pin SOT323 package with Pin 1 = Input (base node), Pin 2 = GND (emitter), Pin 3 = Output (collector). BC847B has Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. The pinouts are functionally incompatible without PCB redesign.
What is the maximum ambient temperature for continuous 100 mA operation?
At 100 mA DC load, PDTC124EU can operate continuously up to +75 °C ambient on a standard FR4 PCB (single-sided, 35 μm Cu), based on its 200 mW Ptot rating and 625 K/W Rth(j-a). Above +75 °C, current must be derated linearly to 0 mA at +150 °C.
Can PDTC124EU be used with 1.8 V logic inputs?
No-its VI(on) minimum is 1.7 V at 25 °C, but drops to 1.1 V at −40 °C and rises to 2.5 V at +100 °C. At 1.8 V, turn-on is marginal and unreliable across temperature; 3.3 V logic is the recommended minimum for guaranteed operation.
Does PDTC124EU require external decoupling when switching inductive loads?
Yes-when switching relays or solenoids, a flyback diode (e.g., BAS116) must be placed across the load. PDTC124EU lacks internal protection; its VCEO rating of 50 V does not include inductive spike suppression, and repeated exposure to >50 V transients will cause permanent failure.
PDTC124EU,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):
- 22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 100nA
- Frequency - Transition:
- 230 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC124EU,115 FAQ
1.How can I place an order for PDTC124EU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124EU,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 PDTC124EU,115 reliable?
The price and inventory of PDTC124EU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124EU,115 is usually 5 days.
3.What payment methods are accepted for PDTC124EU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124EU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124EU,115?
PDTC124EU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124EU,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 PDTC124EU,115?
For technical support, including PDTC124EU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124EU,115 requirements.
6.How does Aetrix verify that PDTC124EU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC124EU,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 PDTC124EU,115 meets industry standards.
7.What is the process for return or replacement of PDTC124EU,115?
All PDTC124EU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124EU,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 PDTC124EU,115 part is unused and in its original packaging.
Return procedure for PDTC124EU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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