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Nexperia USA Inc. PDTC123YU,115
- Part No.:
- PDTC123YU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC123YU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:70
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Product details
Overview
PDTC123YU,115 from Nexperia is an NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, featuring integrated bias resistors R1 = 2.2 kΩ and R2/R1 = 4.5, rated for VCEO = 50 V and IO = 100 mA DC. It functions as a single-stage digital switch in low-voltage logic interface circuits, commonly used in LED driver stages and microcontroller GPIO load switching.
For engineers reviewing the PDTC123YU,115 datasheet, PDTC123YU,115 pinout, PDTC123YU,115 application, or PDTC123YU,115 equivalent, key selection criteria include verified input threshold voltage (VI(on) = 1.15 V typ at IC = 20 mA), guaranteed saturation performance (VCE(sat) ≤ 150 mV), thermal resistance (Rth(j-a) = 625 K/W), and compatibility with reflow-only assembly per JEDEC J-STD-020.
Technical Context
This RET integrates two precision thin-film resistors (R1 = 2.2 kΩ ±30%, R2 = 10 kΩ ±30%) directly into the base-emitter path of an NPN silicon planar transistor, eliminating external bias components. Its fixed R2/R1 ratio of 4.5 enables predictable turn-on behavior across temperature (−65 °C to +150 °C).
The device operates as a saturated switch under DC conditions with IC/IB = 20, delivering stable VCE(sat) ≤ 150 mV at IC = 10 mA and IB = 0.5 mA. It supports fast switching (ton/toff not specified but limited by Cc = 2 pF) and exhibits low leakage (ICEO ≤ 1 μA at VCE = 30 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; defines safe operating range in 3.3 V/5 V logic-level switching. |
| IO | 100 mA DC - Continuous output current capability; sufficient for driving LEDs, small relays, or logic gates. |
| R1 | 2.2 kΩ (1.54–2.86 kΩ) - Input bias resistor; sets base current when driven from CMOS/TTL outputs. |
| R2/R1 | 4.5 (3.6–5.5) - Feedback-to-input resistor ratio; ensures stable saturation and prevents thermal runaway. |
| VCE(sat) | ≤150 mV at IC = 10 mA, IB = 0.5 mA - Low on-state voltage drop; minimizes power loss and self-heating. |
| VI(on) | 1.15 V (typ) at IC = 20 mA - On-threshold input voltage; compatible with 1.8 V/3.3 V MCU I/O without level shifting. |
| Ptot | 200 mW at Tamb ≤ 25 °C - Total power dissipation limit; requires thermal derating above ambient. |
| Rth(j-a) | 625 K/W - Junction-to-ambient thermal resistance in free air; informs PCB copper area requirements for thermal management. |
Pinout & Package
SOT323 (SC-70) is a 3-pin surface-mount plastic package measuring 2.2 × 1.35 × 0.95 mm, optimized for high-density PCB layouts and reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts logic-level drive signal; no external base resistor required. |
| 2 | GND (emitter) | Emitter terminal tied to system ground; serves as common reference for input and output paths. |
| 3 | Output (collector) | Switched output node; connects to load (e.g., LED anode or relay coil); sinks current to emitter. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias network | Monolithic integration of R1 and R2 eliminates two external resistors, reducing BOM count and placement cost. |
| Guaranteed saturation | VCE(sat) ≤ 150 mV at IC = 10 mA ensures minimal conduction loss and predictable logic-low output level. |
| Wide operating temperature | Specified from −65 °C to +150 °C junction temperature; suitable for industrial and automotive under-hood environments. |
| Reflow-compatible packaging | SOT323 meets JEDEC J-STD-020 moisture sensitivity level 1; supports standard lead-free reflow profiles without preconditioning. |
| Low input threshold | VI(on) = 1.15 V (typ) enables direct interfacing with 1.8 V and 3.3 V microcontrollers without pull-up or level-shifting circuitry. |
Applications
| LED Driver Stage | Microcontroller GPIO Load Switch |
|---|---|
Use Scenario: Driving discrete indicator LEDs or low-current RGB LED segments in portable instrumentation. IC Role / Device Role / Timing Role: NPN switch sinking current from LED cathode to ground; controlled by MCU GPIO. Use Value: Eliminates need for external base resistor and pull-down, reducing component count and board area by ≥2 parts per channel. |
Use Scenario: Enabling/disabling peripheral modules (e.g., sensors, transceivers) via MCU-controlled power gating. IC Role / Device Role / Timing Role: Low-side load switch turning on/off VCC supply rail to downstream ICs. Use Value: Provides clean, low-VCE(sat) switching with <150 mV dropout, minimizing voltage loss to powered peripherals. |
| Inverter Logic Interface | Level Translation Circuit |
Use Scenario: Converting active-high logic signals to active-low outputs for legacy TTL or open-collector bus interfaces. IC Role / Device Role / Timing Role: Inverting buffer stage with defined input threshold and rail-to-rail output swing. Use Value: Delivers consistent inversion with VI(off) = 0.75 V (typ), ensuring noise margin against 3.3 V logic high levels. |
Use Scenario: Translating 1.8 V logic outputs to reliably drive 5 V-tolerant inputs in mixed-voltage systems. IC Role / Device Role / Timing Role: Voltage-level shifter using saturated NPN operation with fixed R2/R1 feedback. Use Value: Achieves robust 1.8 V → 5 V translation without external resistors, leveraging built-in R1/R2 ratio for stable biasing. |
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 |
|---|---|---|---|
| PDTA123YU | PNP complement with identical R1/R2 values and SOT323 package; VECO = 50 V, IO = −100 mA. | Used where high-side switching or inverted logic polarity is required instead of low-side sink. | Select PDTA123YU when sourcing current from VCC is needed, e.g., driving P-channel MOSFET gates or active-high loads. |
| PDTC114YU | R1 = 10 kΩ, R2/R1 = 4.5; higher input impedance; VI(on) = 1.4 V (typ); same VCEO, IO, and package. | Better suited for weak-drive sources (e.g., high-Z MCU pins) but slower turn-on due to reduced base current. | Choose PDTC114YU when driving from low-current outputs or when higher input impedance reduces loading on upstream logic. |
Compared with PDTA123YU (PNP) and PDTC114YU (higher-R1 NPN), PDTC123YU offers optimal balance of low input threshold, strong base drive, and low saturation voltage for general-purpose 3.3 V/5 V low-side switching-making it preferred for LED drivers and GPIO-expansion load control.
Availability
PDTC123YU,115 is available at Aetrix Electronics and suitable for LED driver stages, microcontroller GPIO load switching, inverter logic interfaces, and level translation circuits requiring stable component supply and reflow-compatible packaging.
Supply support for PDTC123YU,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
Nexperia is a global semiconductor leader specializing in high-volume discrete, logic, and PowerMOS devices, with core expertise in automotive, industrial, computing, and consumer electronics.
PDTC123YU belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to simplify digital switching designs by integrating precision bias resistors into compact surface-mount packages for space-constrained and cost-sensitive applications.
FAQ
Is PDTC123YU,115 compatible with lead-free reflow soldering?
Yes. PDTC123YU,115 is qualified for lead-free reflow per JEDEC J-STD-020, with MSL Level 1 rating. It supports peak temperatures up to 260 °C and requires no preconditioning. The SOT323 package is designed exclusively for reflow assembly-wave soldering is not recommended.
What is the maximum continuous collector current for PDTC123YU,115?
The maximum continuous DC collector current (IO) is 100 mA at Tamb ≤ 25 °C. At higher ambient temperatures, derating applies: power dissipation must remain within Ptot = 200 mW, and junction temperature must not exceed 150 °C. Thermal design should account for Rth(j-a) = 625 K/W.
Can PDTC123YU,115 replace a standard NPN transistor like BC847 in switching applications?
Only if the external base resistor is removed and the circuit relies solely on internal R1/R2 biasing. Unlike BC847, PDTC123YU,115 has fixed input impedance and guaranteed saturation behavior-but lacks flexibility for analog amplification or variable gain. It is optimized for digital switching, not linear operation.
Does PDTC123YU,115 have a documented ESD rating?
Per Nexperia's standard qualification, PDTC123YU,115 meets HBM ESD rating of ±4 kV (Class 3B) and CDM ESD rating of ±1 kV, as verified per AEC-Q101 for discrete transistors. These ratings apply to the SOT323 package and are confirmed in Nexperia's reliability reports for the PDTC123Y series.
PDTC123YU,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):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 35 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC123YU,115 FAQ
1.How can I place an order for PDTC123YU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC123YU,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 PDTC123YU,115 reliable?
The price and inventory of PDTC123YU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC123YU,115 is usually 5 days.
3.What payment methods are accepted for PDTC123YU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC123YU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC123YU,115?
PDTC123YU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC123YU,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 PDTC123YU,115?
For technical support, including PDTC123YU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC123YU,115 requirements.
6.How does Aetrix verify that PDTC123YU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC123YU,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 PDTC123YU,115 meets industry standards.
7.What is the process for return or replacement of PDTC123YU,115?
All PDTC123YU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC123YU,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 PDTC123YU,115 part is unused and in its original packaging.
Return procedure for PDTC123YU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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