My Inquiry
My Account
NXP Semiconductors PDTC123YK,115
- Part No.:
- PDTC123YK,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC123YK,115.pdf
- Description:
- TRANS PREBIAS NPN 50V 0.1A SMT3
- Quantity:
- Payment:
- Shipping:
Inventory:7,586
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PDTC123YK,115 from Nexperia is an NPN resistor-equipped transistor (RET) in SOT346 (SC-59A/TO-236) package, featuring built-in bias resistors R1 = 2.2 kΩ and R2/R1 = 4.5, rated for VCEO = 50 V and IO = 100 mA DC, used for general-purpose switching in digital interface circuits.
For engineers reviewing the PDTC123YK,115 datasheet, PDTC123YK,115 pinout, PDTC123YK,115 application, or PDTC123YK,115 equivalent, this device serves as a space- and cost-optimized replacement for discrete BJT + two-bias-resistor configurations in low-voltage logic-level translation and load switching.
Technical Context
This RET integrates a monolithic NPN transistor with precision laser-trimmed on-die resistors R1 (base input) and R2 (base-emitter feedback), enabling single-pin control without external bias network. Its fixed R2/R1 ratio of 4.5 ensures stable saturation behavior across temperature.
The device operates with VI(on) = 1.15 V (typ.) at IC = 20 mA and VI(off) = 0.75 V (typ.) at IC = 100 μA, supporting direct interfacing with 1.8 V, 3.3 V, and 5 V CMOS/TTL logic families while maintaining guaranteed turn-off under noise margin conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage before breakdown; supports 24 V industrial bus and 3.3/5 V logic rail switching. |
| IO (DC) | 100 mA - Continuous output current capability; sufficient to drive LEDs, small relays, or MOSFET gates. |
| R1 | 2.2 kΩ ±30% - Input bias resistor value; sets base current for predictable saturation with standard logic high levels. |
| R2/R1 | 4.5 - Fixed feedback-to-input resistor ratio; ensures reliable cutoff and prevents leakage-induced false turn-on. |
| VCE(sat) | 150 mV max at IC = 10 mA, IB = 0.5 mA - Low saturation voltage minimizes power loss and self-heating in switching mode. |
| Ptot | 250 mW - Total power dissipation rating at Tamb ≤ 25 °C in SOT346 package; defines thermal derating envelope for PCB layout. |
Pinout & Package
SOT346 (SC-59A / TO-236) plastic surface-mounted package with 3 leads; body dimensions 3.0 × 1.7 × 1.3 mm; standard footprint compatible with reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Control terminal connected internally to R1; accepts logic-level voltage to enable conduction. |
| 2 | GND (emitter) | Reference node tied to system ground; provides return path for base and collector currents. |
| 3 | output (collector) | Switched output node; connects to load (e.g., LED anode or relay coil) referenced to positive supply. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | Eliminates need for two external resistors, reducing BOM count and PCB area by ~2.5 mm² per instance. |
| Guaranteed VI(on)/VI(off) | Ensures robust logic-level compatibility across 1.8 V to 5 V systems without additional level-shifting circuitry. |
| Low VCE(sat) | Reduces conduction loss to <0.15 V, enabling >95% efficiency in 5 V load-switching applications at 10 mA. |
| Thermal resistance Rth(j-a) | 500 K/W in free air - enables operation up to 100 °C ambient without heatsinking when dissipating ≤125 mW. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving multiple status LEDs from 3.3 V MCU outputs with limited drive strength. IC Role / Device Role: Single-transistor switch replacing discrete BJT + two-resistor network. Use Value: Reduces component count per channel by 2 parts and saves 1.2 mm² PCB area versus discrete solution. | Use Scenario: Adding low-side switch capability to resource-constrained microcontrollers with no dedicated PWM or high-current pins. IC Role / Device Role: Logic-controlled load switch for solenoids, buzzers, or small relays. Use Value: Enables direct 3.3 V GPIO control of 24 V loads via optocoupler-isolated interface with no external bias design effort. |
| Digital Inverter Stage | Level Translation Interface |
Use Scenario: Implementing active-low signal inversion between mixed-voltage domains (e.g., 5 V sensor output → 3.3 V MCU input). IC Role / Device Role: Inverting buffer with defined threshold and hysteresis-free switching. Use Value: Provides clean 5 V → 3.3 V logic inversion with <100 ns propagation delay and no external pull-up required. | Use Scenario: Interfacing legacy 5 V TTL peripherals with modern 1.8 V or 3.3 V SoCs. IC Role / Device Role: Unidirectional level shifter using saturated switching action. Use Value: Achieves sub-1 V input threshold (VI(on) = 1.15 V typ.) compatible with 1.8 V logic high, eliminating need for dedicated level translators. |
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 |
|---|---|---|---|
| PDTC123EK,115 | R1 = 2.2 kΩ, R2 = 47 kΩ (R2/R1 = 21.4); higher feedback resistance increases noise immunity but reduces switching speed. | Better suited for high-noise environments where false turn-on must be avoided, but slower response limits use in >100 kHz PWM. | Select PDTC123EK,115 only when VI(off) margin >1.0 V is required and switching frequency <50 kHz. |
| EMD2P10T1G | PNP RET with R1 = 10 kΩ, R2 = 10 kΩ; complementary polarity; different pinout (SOT-23, pin 1 = emitter). | Used for high-side switching or inverted logic functions; not pin-compatible and requires PCB redesign. | Choose EMD2P10T1G only for PNP-specific topologies; not a drop-in replacement for PDTC123YK,115. |
Compared with PDTC123YK,115, PDTC123EK,115 offers superior off-state noise rejection but sacrifices speed, while EMD2P10T1G provides PNP functionality in a different package and pinout-neither is pin-compatible, requiring layout changes for substitution.
Availability
PDTC123YK,115 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, digital inverter stages, and level translation interfaces requiring stable component supply and long-term production continuity.
Supply support for PDTC123YK,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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, consumer, and wearable markets.
The PDTC123YK,115 belongs to Nexperia's resistor-equipped transistor (RET) product line, designed specifically to simplify digital interface and low-power switching designs by integrating precision bias networks onto standard BJT die.
FAQ
What is the maximum operating temperature for PDTC123YK,115?
The PDTC123YK,115 has a maximum junction temperature (Tj) of 150 °C and a storage temperature range of −65 °C to +150 °C. When operated at its full 250 mW power dissipation in SOT346 package, ambient temperature must be limited to ≤75 °C to maintain Tj ≤ 150 °C using the specified Rth(j-a) = 500 K/W thermal resistance.
Does PDTC123YK,115 require external bias resistors?
No, PDTC123YK,115 does not require external bias resistors. It integrates R1 = 2.2 kΩ and R2 = 10 kΩ on-die, forming a complete NPN transistor with internal base bias network. This eliminates two external components and simplifies PCB layout compared to discrete BJT solutions.
What is the pin configuration of PDTC123YK,115 in SOT346 package?
The PDTC123YK,115 in SOT346 package uses a standardized 3-pin configuration: Pin 1 is input (base), Pin 2 is GND (emitter), and Pin 3 is output (collector). This matches the pinout for SOT23, SOT323, and SOT416 variants in the PDTC123Y series.
Can PDTC123YK,115 be used with 1.8 V logic inputs?
Yes, PDTC123YK,115 supports 1.8 V logic inputs: its VI(on) is specified at 2.5 V (min) and 1.15 V (typ.) for IC = 20 mA, ensuring reliable turn-on with 1.8 V CMOS outputs. VI(off) = 0.75 V (typ.) also guarantees solid turn-off under typical 1.8 V logic low noise margins.
Is PDTC123YK,115 RoHS compliant and halogen-free?
Yes, PDTC123YK,115 is RoHS compliant and halogen-free per Nexperia's standard product specifications. The device meets EU Directive 2011/65/EU and IEC 61249-2-21:2013 requirements, with lead-free terminations and compliant packaging materials verified in official Nexperia documentation.
PDTC123YK,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):
- 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:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMT3; MPAK
PDTC123YK,115 FAQ
1.How can I place an order for PDTC123YK,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC123YK,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 PDTC123YK,115 reliable?
The price and inventory of PDTC123YK,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC123YK,115 is usually 5 days.
3.What payment methods are accepted for PDTC123YK,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC123YK,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC123YK,115?
PDTC123YK,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC123YK,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 PDTC123YK,115?
For technical support, including PDTC123YK,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC123YK,115 requirements.
6.How does Aetrix verify that PDTC123YK,115 is sourced from the original manufacturer or authorized distributors?
All PDTC123YK,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 PDTC123YK,115 meets industry standards.
7.What is the process for return or replacement of PDTC123YK,115?
All PDTC123YK,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC123YK,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 PDTC123YK,115 part is unused and in its original packaging.
Return procedure for PDTC123YK,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC123YK,115 Tags
-
MUN5211T1G
onsemi
-
DTC043ZEBTL
Rohm Semiconductor
-
DTC114EKAT146
Rohm Semiconductor
-
DDTD113ZC-7-F
Diodes Incorporated
-
DRDNB16W-7
Diodes Incorporated
-
PDTC114ET,215
Nexperia USA Inc.
-
PDTC143ZT,215
Nexperia USA Inc.
-
PDTC143ET,215
Nexperia USA Inc.
-
PDTC143XT,215
Nexperia USA Inc.
-
MMUN2211LT1G
onsemi
-
PDTC144ET,215
Nexperia USA Inc.
-
PDTC124ET,215
Nexperia USA Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
