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NXP Semiconductors PDTA124XK,115
- Part No.:
- PDTA124XK,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTA124XK,115.pdf
- Description:
- TRANS PREBIAS PNP 50V 0.1A SMT3
- Quantity:
- Payment:
- Shipping:
Inventory:2,626
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Product details
Overview
PDTA124XK,115 from NXP Semiconductors is a PNP resistor-equipped transistor (RET) in SOT346 (SC-59A/TO-236) package, featuring integrated bias resistors R1 = 22 kΩ and R2/R1 = 2.1, −50 V VCEO, −100 mA IO, and −150 mV VCEsat at IC = −10 mA/IB = −0.5 mA - used for digital switching and IC input control in space-constrained consumer and industrial PCBs.
For engineers reviewing the PDTA124XK,115 datasheet, PDTA124XK,115 pinout, PDTA124XK,115 application, or PDTA124XK,115 equivalent, this page delivers verified pin configuration, thermal resistance (Rth(j-a) = 500 K/W), DC current gain (hFE ≥ 80 at IC = −5 mA), off-state input voltage (VI(off) = −0.8 V typ), and direct alternatives for discrete logic-level switching designs.
Technical Context
This PNP RET integrates two precision bias resistors (R1 = 22 kΩ ±29%, R2/R1 = 2.1 ±21%) to eliminate external base resistors, enabling single-pin drive from microcontroller GPIOs. It operates with VEBO = −7 V and supports input voltage swing from −40 V to +7 V.
Designed for saturated switching, it delivers guaranteed VCEsat ≤ −150 mV at IC = −10 mA and exhibits low collector capacitance (Cc = 3 pF) for fast turn-off. Its junction temperature rating of 150 °C and storage range of −65 °C to +150 °C support operation in extended ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - maximum safe collector-emitter voltage with open base; defines absolute blocking capability in high-side switch configurations. |
| IO | −100 mA - continuous DC output current; supports driving moderate loads like LEDs, relays, or logic inputs without external buffering. |
| R1 | 22 kΩ (15.4–28.6 kΩ) - integrated base pull-up resistor; sets input impedance and enables direct MCU GPIO interface without discrete components. |
| VCEsat | ≤ −150 mV at IC = −10 mA/IB = −0.5 mA - ensures minimal conduction loss and low power dissipation in on-state switching. |
| hFE | ≥ 80 at VCE = −5 V, IC = −5 mA - guarantees sufficient current amplification for reliable saturation under standard logic drive conditions. |
| VI(off) | −0.8 V (typ) at VCE = −5 V, IC = −100 µA - defines minimum input voltage threshold to maintain cutoff; prevents false triggering in noisy environments. |
| Rth(j-a) | 500 K/W - thermal resistance from junction to ambient in free air on FR4 PCB; determines self-heating rise per watt of dissipated power. |
Pinout & Package
SOT346 (SC-59A / TO-236) is a 3-lead surface-mount plastic package measuring 3.0 × 1.7 × 1.3 mm (L × W × H), with gull-wing leads and standard footprint for reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Connected internally to R1 and R2 network; accepts logic-level drive signal directly from MCU or gate output. |
| 2 | GND (emitter) | Common reference node; tied to system ground; serves as current return path for both input and output circuits. |
| 3 | output (collector) | Switched high-side output node; sinks current from load connected between VCC and collector when active. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1/R2 bias network | Eliminates two external resistors, reducing BOM count and PCB area while ensuring consistent biasing across production lots. |
| Guaranteed VCEsat ≤ −150 mV | Minimizes power loss and heat generation during conduction, enabling higher efficiency in battery-powered or thermally constrained applications. |
| Input voltage tolerance (−40 V to +7 V) | Supports robust interfacing with diverse logic families and transient-tolerant operation in industrial control environments. |
| Low Cc = 3 pF | Reduces Miller effect and improves switching speed, especially critical in high-frequency digital signal routing and pulse-width modulation. |
| −100 mA output current rating | Enables direct drive of small solenoids, indicator LEDs, optocouplers, or logic inputs without additional driver stages. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving multiple status LEDs from a resource-limited 3.3 V microcontroller with limited GPIO current capability. IC Role / Device Role / Timing Role: PNP switch configured in high-side topology, sinking LED current to ground through emitter while collector connects to VCC. Use Value: Enables full brightness LED operation using only one GPIO pin per channel, with no external resistors required due to integrated R1/R2. |
Use Scenario: Extending digital output capability of an MCU with fixed pin count by adding parallel-controlled outputs via discrete logic. IC Role / Device Role / Timing Role: Digital buffer/switch translating MCU logic levels to higher-current signals for peripheral enable lines or reset controls. Use Value: Provides deterministic on/off behavior with hFE ≥ 80 and VCEsat ≤ −150 mV, eliminating need for level-shifting or additional transistors. |
| Logic-Level Signal Inverter | Industrial Sensor Interface |
Use Scenario: Inverting TTL/CMOS logic signals where compact size and predictable threshold are essential. IC Role / Device Role / Timing Role: Active-low inverter stage converting high-to-low and low-to-high transitions with defined VI(on)/VI(off) thresholds. Use Value: Delivers sharp transition characteristics with VI(on) = −1.1 V (typ) and VI(off) = −0.8 V (typ), minimizing ambiguity in noise-prone environments. |
Use Scenario: Interfacing analog or digital sensors requiring isolated, current-limited output switching in factory automation systems. IC Role / Device Role / Timing Role: Isolated load switch controlling sensor power rails or enabling/disabling communication lines (e.g., UART, I²C pull-ups). Use Value: Supports operation up to 150 °C junction temperature and withstands −40 V input transients, meeting industrial reliability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP resistor-equipped transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC124XK | NPN complement with identical R1/R2 values, package, and pinout (SOT346); requires inverted logic drive and low-side switching topology. | Used where load must be switched to ground instead of VCC; not interchangeable without circuit redesign. | Select PDTC124XK only when high-side sourcing is impractical and low-side sinking aligns with system architecture. |
| BC857B,215 | Standard PNP BJT without integrated resistors; requires external base resistor network; hFE = 200–450 (higher gain), but adds component count and layout complexity. | Preferred when precise bias tuning or variable gain is needed; unsuitable for space-constrained or cost-sensitive digital logic interfaces. | Choose BC857B,215 if design requires adjustable base current or higher hFE, accepting added bill-of-materials and layout overhead. |
Compared with PDTC124XK, PDTA124XK,115 provides native high-side switching and eliminates polarity inversion; versus BC857B,215, it reduces component count and improves assembly yield but trades off bias flexibility and peak gain.
Availability
PDTA124XK,115 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, logic-level signal inversion, and industrial sensor interface applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for PDTA124XK,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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The PDTA124X series belongs to NXP's Resistor-Equipped Transistor (RET) product line, designed specifically to simplify digital switching implementations by integrating precision bias networks into standard transistor packages.
FAQ
What is the pin configuration of PDTA124XK,115?
The PDTA124XK,115 uses SOT346 package with Pin 1 = input (base), Pin 2 = GND (emitter), and Pin 3 = output (collector). This configuration matches other SOT346-based RETs and differs from TO-92 variants where emitter is Pin 3. The internal R1/R2 network connects exclusively to Pin 1, enabling single-wire logic control without external resistors.
Does PDTA124XK,115 support 5 V logic-level drive?
Yes, PDTA124XK,115 supports 5 V logic-level drive: its VI(on) is −1.1 V (typ) at IC = −2 mA, meaning a 0 V input fully saturates the device when emitter is grounded. With VCC = 5 V and load between VCC and collector, applying 0 V to Pin 1 turns PDTA124XK,115 on, while 5 V keeps it off - compatible with standard CMOS/TTL outputs.
What is the maximum power dissipation of PDTA124XK,115?
The maximum power dissipation of PDTA124XK,115 is 250 mW at Tamb ≤ 25 °C on an FR4 PCB with standard footprint. This limit derives from its Rth(j-a) = 500 K/W and Tj(max) = 150 °C. At 100 mA output and 150 mV saturation voltage, power dissipation is only 15 mW - well within safe operating range even at elevated ambient temperatures.
Can PDTA124XK,115 replace BC857 in existing designs?
PDTA124XK,115 can replace BC857 in digital switching applications where space, BOM count, and assembly cost are critical - but only with schematic modification: BC857 requires two external base resistors, whereas PDTA124XK,115 integrates them. Direct drop-in replacement is not possible without removing those resistors and verifying logic polarity compatibility.
Is PDTA124XK,115 suitable for automotive applications?
PDTA124XK,115 is not qualified to AEC-Q101 or automotive-grade specifications. While its junction temperature rating (150 °C) and storage range (−65 °C to +150 °C) exceed typical under-hood requirements, NXP does not list it in automotive product portfolios, and no PPAP documentation or automotive-specific qualification testing is referenced in the official datasheet.
PDTA124XK,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- PNP - 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:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMT3; MPAK
PDTA124XK,115 FAQ
1.How can I place an order for PDTA124XK,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA124XK,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 PDTA124XK,115 reliable?
The price and inventory of PDTA124XK,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA124XK,115 is usually 5 days.
3.What payment methods are accepted for PDTA124XK,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA124XK,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTA124XK,115?
PDTA124XK,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA124XK,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 PDTA124XK,115?
For technical support, including PDTA124XK,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA124XK,115 requirements.
6.How does Aetrix verify that PDTA124XK,115 is sourced from the original manufacturer or authorized distributors?
All PDTA124XK,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 PDTA124XK,115 meets industry standards.
7.What is the process for return or replacement of PDTA124XK,115?
All PDTA124XK,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA124XK,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 PDTA124XK,115 part is unused and in its original packaging.
Return procedure for PDTA124XK,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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