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NXP Semiconductors PDTC124XK,115
- Part No.:
- PDTC124XK,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC124XK,115.pdf
- Description:
- TRANS PREBIAS NPN 50V 0.1A SMT3
- Quantity:
- Payment:
- Shipping:
Inventory:2,399
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Product details
Overview
PDTC124XK,115 from NXP Semiconductors is an NPN resistor-equipped transistor (RET) in SOT346 (SC-59A/TO-236) package, featuring integrated bias resistors R1 = 22 kΩ and R2/R1 = 2.1 typ, rated for VCEO = 50 V and IO = 100 mA, used for general-purpose switching in digital interface circuits.
For engineers reviewing the PDTC124XK,115 datasheet, PDTC124XK,115 pinout, PDTC124XK,115 application, or PDTC124XK,115 equivalent, key selection criteria include built-in resistor values, collector-emitter saturation voltage (VCEsat ≤ 150 mV at IC = 10 mA), off-state input voltage (VI(off) = 0.5–0.8 V), thermal resistance (Rth(j-a) = 500 K/W), and SOT346 footprint compatibility.
Technical Context
This device integrates two precision bias resistors (R1 = 22 kΩ ±30%, R2/R1 = 2.1 ±21%) to replace discrete base-resistor configurations, enabling direct TTL/CMOS logic-level drive without external components. Its NPN structure supports active-low switching with emitter-grounded configuration.
The PDTC124XK,115 operates with VI(on) = 1.1 V typ at IC = 2 mA and VI(off) = 0.65 V typ at IC = 100 μA, ensuring robust noise margin in 3.3 V and 5 V digital systems. It maintains hFE ≥ 80 at IC = 5 mA and exhibits ICEO ≤ 1 μA at VCE = 30 V, supporting low-leakage standby operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V maximum - supports rail-to-rail switching up to 5 V logic with safety margin |
| IO | 100 mA continuous output - drives LEDs, small relays, or logic inputs directly |
| R1 | 22 kΩ ±30% - sets base current for predictable turn-on with standard microcontroller GPIOs |
| R2/R1 | 2.1 typ (1.7–2.6) - ensures stable bias network ratio for consistent saturation behavior |
| VCEsat | ≤150 mV at IC = 10 mA, IB = 0.5 mA - minimizes power loss and heat generation in saturated switch mode |
| VI(off) | 0.5–0.8 V - guarantees reliable cutoff with 0 V logic low, preventing unintended conduction |
| hFE | ≥80 at VCE = 5 V, IC = 5 mA - provides sufficient current gain for low-drive applications |
Pinout & Package
SOT346 (SC-59A / TO-236) plastic surface-mounted package, 3-lead, 1.7 mm × 2.5 mm × 1.0 mm body, standard footprint for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Connected internally to R1; accepts logic-level control signal directly |
| 2 | GND (emitter) | Common reference node; must be tied to system ground for proper biasing |
| 3 | output (collector) | Switched high-side load connection; sinks current when active |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors R1 and R2 | Eliminates need for two external resistors, reducing BOM count and PCB area by ~2 components per switch |
| Low VCEsat (≤150 mV) | Reduces conduction losses below 1.5 mW at 10 mA, enabling thermally efficient switching in space-constrained layouts |
| Logic-compatible VI(on)/VI(off) | Operates reliably with 3.3 V and 5 V CMOS/TTL outputs without level-shifting circuitry |
| Standard SOT346 footprint | Enables drop-in replacement for legacy SOT-23/SOT-223 switches while maintaining automated assembly compatibility |
| JEDEC TO-236 compliant | Ensures mechanical interoperability with industry-standard pick-and-place equipment and reflow profiles |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V MCU pins with limited current sourcing capability. IC Role / Device Role / Timing Role: NPN switch controlling LED cathode path to ground; acts as current sink with fixed bias network. Use Value: Eliminates need for external base resistor, reduces layout complexity, and ensures consistent brightness across multiple channels using identical VI(on) threshold. |
Use Scenario: Extending I/O count of an ARM Cortex-M0 MCU by adding 8-bit parallel output ports via shift registers. IC Role / Device Role / Timing Role: Level-shifting buffer between shift register Q outputs and higher-current loads (e.g., optocouplers, small solenoids). Use Value: Provides guaranteed saturation at 10 mA with <150 mV drop, preserving timing margins in synchronous data transfer paths. |
| Inverter Logic Interface | Industrial Sensor Signal Conditioning |
Use Scenario: Converting open-drain sensor outputs (e.g., I²C pull-up lines) into clean CMOS-compatible signals. IC Role / Device Role / Timing Role: Active pull-down stage that inverts and amplifies weak signals while isolating source impedance. Use Value: Built-in R1/R2 ratio ensures precise hysteresis-free inversion with VI(off) < 0.8 V, avoiding false triggering in noisy factory environments. |
Use Scenario: Isolating analog sensor outputs (e.g., thermistor-based temperature monitors) from digital control logic. IC Role / Device Role / Timing Role: Digital enable gate for sensor power supply rail, activated only during measurement cycles. Use Value: ICEO ≤ 1 μA at 30 V enables >10-year battery life in low-power wireless sensor nodes when used as sleep-mode switch. |
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 |
|---|---|---|---|
| PDTA124XK | PNP complement with identical R1/R2 values and SOT346 package | Used where high-side switching or inverted logic polarity is required | Select PDTA124XK when driving loads referenced to VCC instead of GND |
| PDTC124XT | SOT23 package (same pinout but smaller 1.3 mm × 2.9 mm body); otherwise identical electrical specs | Preferred for ultra-dense PCBs where board space is constrained beyond SOT346 limits | Choose PDTC124XT only if layout allows tighter pitch and thermal management supports 250 mW Ptot |
Compared with PDTC124XK,115, PDTA124XK enables complementary high-side control without redesigning bias networks, while PDTC124XT offers identical functionality in a 30% smaller footprint-both require no schematic changes but differ in mechanical integration and thermal derating.
Availability
PDTC124XK,115 is available at Aetrix Electronics and suitable for industrial automation interfaces, consumer electronics power sequencing, and automotive body-control modules requiring stable component supply and long-term manufacturability.
Supply support for PDTC124XK,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 applications.
The PDTC124XK,115 belongs to NXP's Resistor-Equipped Transistor (RET) family, designed to simplify digital interface design by integrating precision bias networks into standard transistor packages for cost-sensitive, high-volume switching applications.
FAQ
What is the exact package type and footprint of PDTC124XK,115?
The PDTC124XK,115 uses the SOT346 package (also known as SC-59A or JEDEC TO-236), with 1.7 mm × 2.5 mm × 1.0 mm dimensions and standardized 0.95 mm lead pitch. Its pin 1 is base input, pin 2 is emitter (GND), and pin 3 is collector output-matching common SOT-23 layouts but with slightly larger body size for improved thermal performance.
Does PDTC124XK,115 require external base resistors?
No, the PDTC124XK,115 does not require external base resistors because it integrates R1 = 22 kΩ and R2 = 47 kΩ internally. This eliminates two passive components per switch, reduces PCB area, and ensures consistent biasing across temperature and process variations-making PDTC124XK,115 ideal for high-reliability digital interface designs.
What is the maximum continuous collector current rating for PDTC124XK,115?
The PDTC124XK,115 is rated for a maximum continuous output current (IO) of 100 mA under standard FR4 PCB mounting conditions. This rating assumes ambient temperature ≤25 °C and accounts for its 250 mW total power dissipation limit and 500 K/W junction-to-ambient thermal resistance in the SOT346 package.
Can PDTC124XK,115 be used with 3.3 V logic controllers?
Yes, PDTC124XK,115 is fully compatible with 3.3 V logic controllers: its VI(on) is 1.1 V typical at IC = 2 mA, and VI(off) is 0.65 V typical, providing >1.5 V noise margin. The PDTC124XK,115 switches cleanly with standard 3.3 V GPIO outputs without additional level-shifting circuitry.
Is there a PNP version of PDTC124XK,115 with matching resistor values?
Yes, the PDTA124XK is the direct PNP complement of PDTC124XK,115, sharing identical R1 = 22 kΩ and R2/R1 = 2.1 ratio, same SOT346 package, and matching pinout (pin 1 = base, pin 2 = emitter, pin 3 = collector). This enables symmetrical high-side/low-side switching designs using PDTC124XK,115 and PDTA124XK together.
PDTC124XK,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:
- 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:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMT3; MPAK
PDTC124XK,115 FAQ
1.How can I place an order for PDTC124XK,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124XK,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 PDTC124XK,115 reliable?
The price and inventory of PDTC124XK,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124XK,115 is usually 5 days.
3.What payment methods are accepted for PDTC124XK,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124XK,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124XK,115?
PDTC124XK,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124XK,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 PDTC124XK,115?
For technical support, including PDTC124XK,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124XK,115 requirements.
6.How does Aetrix verify that PDTC124XK,115 is sourced from the original manufacturer or authorized distributors?
All PDTC124XK,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 PDTC124XK,115 meets industry standards.
7.What is the process for return or replacement of PDTC124XK,115?
All PDTC124XK,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124XK,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 PDTC124XK,115 part is unused and in its original packaging.
Return procedure for PDTC124XK,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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