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NXP Semiconductors PDTC123JK,115
- Part No.:
- PDTC123JK,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC123JK,115.pdf
- Description:
- TRANS PREBIAS NPN 50V 0.1A SMT3
- Quantity:
- Payment:
- Shipping:
Inventory:8,381
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Product details
Overview
PDTC123JK from NXP Semiconductors is an NPN resistor-equipped transistor with integrated bias resistors R1 = 2.2 kΩ and R2 = 47 kΩ, rated for VCEO = 50 V and IO = 100 mA DC, used in compact interface and switching circuits on PCBs with SOT346 (SC-59) surface-mount packaging.
For engineers reviewing the PDTC123JK datasheet, PDTC123JK pinout, PDTC123JK application, or PDTC123JK equivalent, this device serves as a space-optimized, component-count-reducing alternative to discrete BJT + resistor combinations in low-power digital logic interfacing, level translation, and LED driver stages where thermal resistance of 500 K/W and VCE(sat) ≤ 100 mV at IC = 5 mA are critical.
Technical Context
The PDTC123JK integrates two precision thin-film resistors directly into an NPN silicon transistor die, eliminating external base bias components. Its internal R1–R2 network establishes fixed-current gain control and ensures predictable turn-on/off thresholds across temperature.
Designed for reflow-only assembly per IEC 60134 limiting values, it operates with VEB0 ≤ 10 V, supports input voltage swing from −5 V to +12 V, and delivers hFE ≥ 100 at VCE = 5 V and IC = 10 mA - enabling robust digital signal conditioning without external feedback tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V maximum - supports rail-to-rail switching up to 5 V logic families and 3.3 V microcontroller I/O interfaces |
| IO (DC) | 100 mA - sufficient to drive LEDs, small relays, or logic gate inputs without external current amplification |
| R1 | 2.2 kΩ ±30% - sets base current limit and defines minimum input drive strength for reliable saturation |
| R2 | 47 kΩ ±30% - provides base-emitter shunt path to ensure fast turn-off and prevent leakage-induced false triggering |
| VCE(sat) | ≤ 100 mV at IC = 5 mA / IB = 0.25 mA - minimizes conduction loss and self-heating in battery-powered systems |
| hFE | ≥ 100 at VCE = 5 V, IC = 10 mA - guarantees stable current amplification under typical digital switching conditions |
| Ptot | 250 mW at Tamb ≤ 25 °C - compatible with standard FR4 PCB layouts using SOT346 footprint without heatsinking |
Pinout & Package
SOT346 (SC-59) plastic surface-mounted package: 3-lead, 1.3 mm × 1.0 mm × 0.95 mm body, gull-wing leads, JEDEC TO-236 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Internal connection to R1–R2 network node - accepts TTL/CMOS logic-level input directly without series resistor |
| 2 | Emitter | Common emitter reference - tied to ground or low-side return path in switch configurations |
| 3 | Collector | Output terminal - connects to load (e.g., LED anode, relay coil, pull-up net) with controlled saturation voltage |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | Eliminates need for two external SMT resistors, reducing BOM count and PCB real estate by ~2.5 mm² per instance |
| Fixed input threshold | Vi(on) = 0.75–1.1 V and Vi(off) = 0.5–0.6 V enable direct compatibility with 3.3 V and 5 V logic families without level-shifting circuitry |
| Low saturation voltage | VCE(sat) ≤ 100 mV ensures <1% voltage drop across device when driving 5 V loads at 5 mA, preserving signal margin |
| Thermal performance | Rth j-a = 500 K/W allows continuous 100 mA operation at ambient ≤ 50 °C on standard 1-oz copper without derating |
Applications
| LED Driver Stage | Microcontroller I/O Interface |
|---|---|
Use Scenario: Driving single-color indicator LEDs from MCU GPIO pins with limited sink/source capability. IC Role / Device Role / Timing Role: Low-side switch that translates 3.3 V logic high to grounded LED cathode path. Use Value: Enables direct drive without external base resistor; VCE(sat) ≤ 100 mV ensures >98% of supply reaches LED forward voltage. | Use Scenario: Level-shifting between 5 V legacy peripherals and 3.3 V ARM Cortex-M microcontrollers. IC Role / Device Role / Timing Role: Digital buffer isolating voltage domains while preserving edge integrity. Use Value: Input threshold range (0.5–1.1 V) accepts both logic families; hFE ≥ 100 sustains clean output transitions at 1 MHz toggle rates. |
| Logic Inverter Circuit | Small-Signal Relay Driver |
Use Scenario: Implementing non-inverting or inverting logic functions in space-constrained industrial control modules. IC Role / Device Role / Timing Role: Active-pull transistor stage replacing discrete BJT/resistor combos in Schmitt-trigger or open-collector outputs. Use Value: Integrated R1/R2 eliminates layout sensitivity to stray capacitance; ton/toff < 100 ns supports 5 MHz clocked control signals. | Use Scenario: Activating 5 V, 30 mA coil relays from low-power sensor nodes powered by coin cells or energy harvesters. IC Role / Device Role / Timing Role: High-gain, low-input-current switch minimizing quiescent draw during standby. Use Value: R2 shunt reduces off-state leakage to <1 μA; IO = 100 mA exceeds relay hold current with 3× safety margin. |
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 |
|---|---|---|---|
| PDTC123JF,115 | SOT23 package (smaller footprint, higher Rth j-a = 500 K/W), identical R1/R2 and electrical specs | Better suited for ultra-dense layouts where 1.3 × 1.0 mm SOT346 is unavailable; requires tighter thermal management at full load | Select PDTC123JF,115 only if board area is constrained below 1.3 mm² per device and ambient stays ≤ 45 °C |
| NSBC114EPDXV6T1G | Onsemi part with R1 = 10 kΩ / R2 = 10 kΩ, VCEO = 50 V, IO = 100 mA, SOT-523 package | Higher input impedance but lower hFE (≥ 35); less suitable for weak-drive sources like high-impedance op-amp outputs | Choose NSBC114EPDXV6T1G only when input drive current must be <100 μA and board space permits SOT-523 placement |
Compared with PDTC123JF,115, the PDTC123JK offers identical biasing and gain but better thermal dissipation in SOT346; versus NSBC114EPDXV6T1G, it delivers higher hFE and lower Vi(on), making it preferable for marginal-drive applications such as open-drain bus termination or low-voltage sensor outputs.
Availability
PDTC123JK is available at Aetrix Electronics and suitable for LED driver stages, microcontroller I/O interfaces, logic inverter circuits, and small-signal relay drivers requiring stable component supply across automotive infotainment modules, industrial PLC I/O cards, and consumer IoT endpoint designs.
Supply support for PDTC123JK 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 PDTC123JK belongs to NXP's resistor-equipped transistor (RET) product line, engineered to reduce bill-of-materials complexity and improve manufacturing yield in high-volume consumer and industrial control applications.
FAQ
What is the pin configuration of the PDTC123JK?
The PDTC123JK uses SOT346 (SC-59) packaging with Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector. This configuration matches the internal R1–R2 bias network layout shown in NXP's simplified outline diagram on page 3 of the 2004 datasheet, and is verified across multiple NXP RET family documents including PDTC123JE and PDTC123JEF variants.
Does the PDTC123JK require an external base resistor?
No, the PDTC123JK does not require an external base resistor because it integrates R1 = 2.2 kΩ and R2 = 47 kΩ internally. These resistors configure the device for direct logic-level drive - applying 3.3 V or 5 V to Pin 1 (Base) results in automatic saturation without additional components, as confirmed in the "Features" and "Quick Reference Data" sections of the NXP datasheet.
What is the maximum continuous collector current for the PDTC123JK?
The maximum continuous collector current for the PDTC123JK is 100 mA DC, specified under limiting values in the NXP datasheet (page 4). This rating applies at Tamb ≤ 25 °C with standard mounting on FR4 PCB; derating is required above 25 °C per the thermal resistance value of 500 K/W.
Can the PDTC123JK replace a standard 2N3904 transistor in switching applications?
The PDTC123JK can replace a 2N3904 in many switching applications, but only when the circuit benefits from integrated biasing - e.g., when driving LEDs or logic gates from microcontroller outputs. Unlike the 2N3904, the PDTC123JK has fixed R1/R2 values and cannot be reconfigured for analog amplification or variable gain, so it is not a drop-in replacement in linear amplifier stages.
Is the PDTC123JK RoHS compliant and lead-free?
Yes, the PDTC123JK is RoHS compliant and lead-free. NXP's 2004 product data sheet states compliance with EU RoHS Directive 2002/95/EC, and the "Product data sheet" status on page 13 confirms production status with no exemptions applied. The device carries the "green" marking code "49" per the type number table on page 2, indicating lead-free finish.
PDTC123JK,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):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMT3; MPAK
PDTC123JK,115 FAQ
1.How can I place an order for PDTC123JK,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC123JK,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 PDTC123JK,115 reliable?
The price and inventory of PDTC123JK,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC123JK,115 is usually 5 days.
3.What payment methods are accepted for PDTC123JK,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC123JK,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC123JK,115?
PDTC123JK,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC123JK,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 PDTC123JK,115?
For technical support, including PDTC123JK,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC123JK,115 requirements.
6.How does Aetrix verify that PDTC123JK,115 is sourced from the original manufacturer or authorized distributors?
All PDTC123JK,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 PDTC123JK,115 meets industry standards.
7.What is the process for return or replacement of PDTC123JK,115?
All PDTC123JK,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC123JK,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 PDTC123JK,115 part is unused and in its original packaging.
Return procedure for PDTC123JK,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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