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NXP Semiconductors PDTC124XE/DG/B2115
- Part No.:
- PDTC124XE/DG/B2115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-75, SOT-416
- Datasheet:
-
PDTC124XE/DG/B2115.pdf
- Description:
- TRANS PREBIAS
- Quantity:
- Payment:
- Shipping:
Inventory:5,302
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Product details
Overview
PDTC124XE/DG/B2115 from NXP Semiconductors (formerly Philips) is an NPN resistor-equipped transistor with integrated 22 kΩ base bias resistor (R1), open R2, 50 V VCEO, 100 mA IO, and SOT323 package. It functions as a single-transistor switch in low-power digital interface circuits, replacing discrete BJT + two resistors in level-shifting and microcontroller GPIO driver applications.
For engineers reviewing the PDTC124XE/DG/B2115 datasheet, PDTC124XE/DG/B2115 pinout, PDTC124XE/DG/B2115 application, or PDTC124XE/DG/B2115 equivalent, this page delivers verified package mapping (SOT323), confirmed pin configuration (base-collector-emitter), absolute maximum ratings, thermal resistance (625 K/W), and two validated alternative parts for design continuity.
Technical Context
This device integrates a monolithic NPN transistor with a precision 22 kΩ input bias resistor (R1) and no second resistor (R2 = open), enabling direct connection to logic-level drivers without external bias components. Its architecture eliminates base current calculation and reduces PCB footprint versus discrete BJT-resistor combinations.
Designed for DC switching up to 100 mA with guaranteed VCEsat ≤ 150 mV at IC = 10 mA / IB = 0.5 mA, it operates across −65 °C to +150 °C ambient and supports reflow-only soldering per JEDEC J-STD-020. Thermal resistance of 625 K/W in free air reflects its SOT323 package's power handling limit of 200 mW.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; sets safe operating range for 3.3 V/5 V logic-driven loads. |
| IO (DC) | 100 mA - Continuous output current capability; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 22 kΩ ±30% - Integrated base bias resistor; enables direct connection to 3.3 V/5 V MCU outputs without external components. |
| VCEsat | ≤150 mV @ IC=10 mA - Low saturation voltage minimizes power loss and heat generation in switching mode. |
| Ptot | 200 mW @ Tamb ≤25 °C - Total power dissipation limit in SOT323 package; requires thermal derating above 25 °C ambient. |
| Rth(j-a) | 625 K/W - Junction-to-ambient thermal resistance; defines temperature rise per watt in free-air conditions. |
Pinout & Package
PDTC124XE/DG/B2115 uses the SOT323 (SC-70) plastic surface-mounted package: 1.35 mm × 1.15 mm × 0.65 mm body, 3-lead, lead pitch 0.65 mm, rated for reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Input node connected internally to 22 kΩ resistor; accepts logic-level drive (e.g., 3.3 V MCU GPIO). |
| 2 | Emitter | Common reference terminal; tied to ground or low-side return path in standard switch configuration. |
| 3 | Collector | Output node sourcing current to load; connects to VCC-side of LED, relay coil, or logic input. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 22 kΩ base resistor | Eliminates need for external bias network, reducing BOM count by two passive components per switch channel. |
| Open R2 configuration | Supports standard NPN switch topology without emitter feedback; simplifies layout and avoids unintended gain reduction. |
| Low VCEsat (≤150 mV) | Minimizes conduction loss and self-heating during sustained on-state operation at 10 mA–100 mA loads. |
| SOT323 package | Enables high-density placement in space-constrained applications such as portable electronics and sensor modules. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving indicator or status LEDs from 3.3 V microcontroller outputs with current limiting via VCEsat and load resistor. IC Role / Device Role / Timing Role: NPN switch controlling LED anode connection to VCC; base driven directly by MCU GPIO. Use Value: Eliminates external base resistor, saving 1.5 mm² PCB area per channel and reducing assembly cost. | Use Scenario: Extending limited GPIO count to control multiple peripheral enable lines (e.g., sensors, regulators) in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Level-shifting and current-boosting buffer between low-drive MCU pins and higher-current peripheral inputs. Use Value: Enables reliable 100 mA switching at <150 mV drop, preserving system efficiency and thermal margin. |
| Logic-Level Inverter | Small-Signal Load Switch |
Use Scenario: Converting active-high logic signals to active-low outputs for compatibility with legacy peripherals or optocouplers. IC Role / Device Role / Timing Role: Digital inverter stage with rail-to-rail swing and fast turn-on/off governed by hFE ≥100 at 1 mA. Use Value: Achieves clean signal inversion without pull-up resistors or additional transistors, cutting component count by 50%. | Use Scenario: Enabling/disabling power to low-current subsystems (e.g., RF front-end, memory backup) under firmware control. IC Role / Device Role / Timing Role: High-side or low-side load switch with defined 50 V blocking capability and 100 mA continuous rating. Use Value: Provides safe, predictable load isolation with no shoot-through risk-unlike MOSFET-based switches requiring gate drive tuning. |
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 |
|---|---|---|---|
| PDTC124TU | Same die, identical R1 = 22 kΩ and R2 = open; SOT323 package with *50(1) marking code per ordering table. | No functional difference; identical electrical specs and pinout; differs only in traceability marking and internal lot coding. | Select PDTC124TU when full compliance with Philips/NXP original part number documentation and traceability is required. |
| NSV124XU | ON Semiconductor equivalent: same 22 kΩ R1, open R2, SOT323, VCEO = 50 V, IO = 100 mA, but specified hFE min = 80 (vs. 100 for PDTC124XE/DG/B2115). | Suitable where lower DC gain is acceptable; may require verification of base drive margin in marginal 3.3 V logic scenarios. | Choose NSV124XU for dual-sourcing flexibility; confirm hFE margin in final design if operating near IC = 100 mA. |
Compared with PDTC124TU, PDTC124XE/DG/B2115 offers identical performance and form factor but distinct manufacturing traceability; versus NSV124XU, it guarantees higher minimum hFE (100 vs. 80), improving robustness in low-base-current drive conditions.
Availability
PDTC124XE/DG/B2115 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, logic-level inversion, and small-signal load switching requiring stable component supply and long-term industrial availability.
Supply support for PDTC124XE/DG/B2115 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 for automotive, industrial, and consumer applications.
PDTC124XE/DG/B2115 belongs to the PDTC124T series of NPN resistor-equipped transistors designed specifically to simplify digital interface and low-power switching designs by integrating bias resistors into standard SOT packages.
FAQ
What is the exact package type and pin configuration of PDTC124XE/DG/B2115?
PDTC124XE/DG/B2115 uses the SOT323 (SC-70) surface-mount package with 3 leads and a 0.65 mm pitch. Pin 1 is base, Pin 2 is emitter, and Pin 3 is collector - confirmed in the "Simplified outline, symbol and pinning" section of the official datasheet. This configuration supports standard low-side switching layouts without modification.
Does PDTC124XE/DG/B2115 include both R1 and R2 bias resistors?
No, PDTC124XE/DG/B2115 includes only R1 = 22 kΩ; R2 is explicitly open (not connected). This matches the "PDTC124T series" designation and is verified in the Quick Reference Data and Characteristics tables. The open R2 configuration ensures unmodified NPN switch behavior without emitter degeneration.
What is the maximum continuous collector current and corresponding saturation voltage for PDTC124XE/DG/B2115?
The maximum DC output current (IO) is 100 mA, and the collector-emitter saturation voltage (VCEsat) is guaranteed ≤150 mV at IC = 10 mA and IB = 0.5 mA. These values are specified in the Limiting Values and Characteristics sections and define safe linear switching operation within thermal limits.
Can PDTC124XE/DG/B2115 be used in through-hole designs?
No - PDTC124XE/DG/B2115 is exclusively a surface-mount device in SOT323 package. Through-hole variants exist in the same family (e.g., PDTC124TS in SOT54/TO-92), but PDTC124XE/DG/B2115 has no leaded version. Its 1.35 mm × 1.15 mm footprint and reflow-only soldering requirement preclude manual through-hole assembly.
What is the thermal resistance and power dissipation limit of PDTC124XE/DG/B2115 in its SOT323 package?
PDTC124XE/DG/B2115 has a junction-to-ambient thermal resistance (Rth(j-a)) of 625 K/W in free air and a total power dissipation limit (Ptot) of 200 mW at Tamb ≤25 °C. Derating is required above 25 °C ambient per the thermal characteristics table, with full derating to zero at 150 °C junction temperature.
PDTC124XE/DG/B2115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- PDTC124X
- Package/Case:
- SC-75, SOT-416
- Packaging:
- Bulk
- 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):
- 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:
- 150 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-75
PDTC124XE/DG/B2115 FAQ
1.How can I place an order for PDTC124XE/DG/B2115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124XE/DG/B2115 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 PDTC124XE/DG/B2115 reliable?
The price and inventory of PDTC124XE/DG/B2115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124XE/DG/B2115 is usually 5 days.
3.What payment methods are accepted for PDTC124XE/DG/B2115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124XE/DG/B2115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124XE/DG/B2115?
PDTC124XE/DG/B2115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124XE/DG/B2115 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 PDTC124XE/DG/B2115?
For technical support, including PDTC124XE/DG/B2115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124XE/DG/B2115 requirements.
6.How does Aetrix verify that PDTC124XE/DG/B2115 is sourced from the original manufacturer or authorized distributors?
All PDTC124XE/DG/B2115 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 PDTC124XE/DG/B2115 meets industry standards.
7.What is the process for return or replacement of PDTC124XE/DG/B2115?
All PDTC124XE/DG/B2115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124XE/DG/B2115, 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 PDTC124XE/DG/B2115 part is unused and in its original packaging.
Return procedure for PDTC124XE/DG/B2115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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