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NXP Semiconductors PDTB123YK,115
- Part No.:
- PDTB123YK,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTB123YK,115.pdf
- Description:
- TRANS PREBIAS PNP 50V 0.5A SMT3
- Quantity:
- Payment:
- Shipping:
Inventory:8,110
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Product details
Overview
PDTB123YK from NXP Semiconductors is a PNP resistor-equipped transistor (RET) designed for digital switching in automotive and industrial control circuits, featuring built-in bias resistors R1 = 2.2 kΩ and R2 = 10 kΩ, −50 V collector-emitter voltage rating, −500 mA DC output current capability, and ±10 % resistor ratio tolerance.
For engineers reviewing the PDTB123YK datasheet, PDTB123YK pinout, PDTB123YK application, or PDTB123YK equivalent, this device serves as a cost-optimized, surface-mount alternative to discrete BJT + resistor combinations in load switching and IC input control - with verified SOT346 package compatibility and validated thermal performance on FR4 PCBs.
Technical Context
The PDTB123YK integrates two precision thin-film resistors (R1 = 2.2 kΩ, R2 = 10 kΩ) directly into a monolithic PNP silicon die, eliminating external base bias components and reducing layout complexity. Its fixed R2/R1 ratio of 4.55 (typ.) ensures consistent turn-on behavior across temperature and process variation.
Designed for saturated-switch operation, it delivers VCEsat ≤ −0.3 V at IC = −50 mA / IB = −2.5 mA and supports VI(on) down to −1.0 V (typ.) at IC = −20 mA, enabling direct interfacing with 3.3 V and 5 V logic families without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - maximum safe collector-emitter voltage under open-base conditions, suitable for 24 V industrial bus switching with margin. |
| IO (DC) | −500 mA - continuous output current capability, supporting medium-power loads like relays, LEDs, and small solenoids. |
| R1 | 2.2 kΩ (1.54–2.86 kΩ) - input bias resistor value, sets base drive current when driven from logic-level sources. |
| R2/R1 | 4.55 (4.1–5.0) - fixed feedback-to-input resistor ratio, stabilizes operating point and improves noise immunity. |
| VI(on) | −1.0 V (typ.) at IC = −20 mA - minimum input voltage required to achieve full conduction, compatible with TTL and CMOS outputs. |
| hFE | 70 (min.) at VCE = −5 V, IC = −50 mA - guaranteed DC current gain ensures reliable saturation with standard logic drive. |
| VCEsat | ≤ −0.3 V - low saturation voltage minimizes power loss and self-heating during sustained on-state operation. |
Pinout & Package
Package: SOT346 (SC-59A / TO-236), plastic surface-mounted package with 3 leads; footprint optimized for automated assembly on FR4 PCBs with single-sided copper and standard tin plating.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Connected internally to R1; accepts logic-level control signal; R1 limits base current to prevent overdrive. |
| 2 | GND (emitter) | Common reference node; tied to system ground; provides return path for both input and output currents. |
| 3 | output (collector) | Switched high-side output node; sinks up to −500 mA; connects to load between VCC and collector. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in R1 and R2 bias network | Eliminates two external resistors, reducing BOM count and PCB area while improving assembly yield. |
| ±10 % R2/R1 tolerance | Ensures predictable turn-on threshold and stable switching behavior across production lots and temperature ranges. |
| −500 mA DC output rating | Supports direct driving of 24 V relay coils (e.g., 120 Ω), LED strings (up to 200 mA), and logic inputs without external buffers. |
| VCEsat ≤ −0.3 V at rated current | Reduces power dissipation to ≤150 mW under full load, enabling operation within 250 mW total power limit of SOT346 package. |
| Compatible with 3.3 V/5 V logic families | VI(on) ≤ −1.0 V (typ.) and VI(off) ≥ −0.6 V (typ.) allow robust interface with standard microcontroller GPIOs and gate drivers. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Output |
|---|---|
|
Use Scenario: Switching 12 V lamp loads and door lock actuators in BCM subsystems. IC Role / Device Role: High-side load switch controlling grounded loads via emitter-follower configuration. Use Value: Built-in R1/R2 eliminates need for external biasing, reducing component count per channel by 2 and improving AEC-Q100-compliant design efficiency. |
Use Scenario: Driving 24 V solenoid valves and indicator LEDs in modular I/O modules. IC Role / Device Role: Logic-level controlled PNP switch interfacing with microcontroller outputs. Use Value: −500 mA rating and −50 V VCEO provide safety margin for inductive kickback in 24 V industrial environments. |
| Consumer Appliance Control Board | Smart Home Relay Interface |
|
Use Scenario: Replacing BC807-based discrete switches in washing machine motor control logic. IC Role / Device Role: Digital input buffer and level translator for MCU GPIOs driving higher-current peripherals. Use Value: Identical pinout to BC807 in SOT346 allows drop-in replacement while reducing bill-of-materials cost by 15 %. |
Use Scenario: Isolating and amplifying MCU output signals to drive 5 V/12 V relay coils in smart lighting hubs. IC Role / Device Role: Single-device solution combining base biasing and switching in compact SOT346 form factor. Use Value: Low VCEsat (≤ −0.3 V) minimizes heat generation in densely packed relay driver arrays, avoiding thermal derating. |
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 |
|---|---|---|---|
| BC807-40,115 | Discrete PNP BJT without integrated resistors; requires external R1/R2; hFE = 250–630 (higher gain but less predictable biasing). | Used where adjustable base current or variable switching thresholds are needed; not drop-in compatible due to missing internal resistors. | Select BC807-40,115 only when fine-tuned biasing or higher hFE is required; PDTB123YK reduces design iteration time for fixed-threshold digital switching. |
| PDTD123YK,115 | NPN complement with identical R1/R2 values (2.2 kΩ / 10 kΩ); same SOT346 package; −500 mA rating but opposite polarity. | Used in low-side switching configurations where load is connected to VCC and emitter ties to ground. | Choose PDTD123YK,115 when implementing complementary low-side drivers alongside PDTB123YK high-side switches in H-bridge or dual-rail logic interfaces. |
Compared with BC807-40,115, PDTB123YK reduces component count and layout risk by integrating biasing; compared with PDTD123YK,115, it enables high-side switching topology essential for grounded-load automotive and industrial systems.
Availability
PDTB123YK is available at Aetrix Electronics and suitable for automotive body control, industrial PLC output stages, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for PDTB123YK 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 PDTB123YK belongs to NXP's Resistor-Equipped Transistor (RET) family, engineered to simplify digital switching designs by replacing discrete BJT + resistor combinations with single-package, production-validated solutions for cost-sensitive, high-volume applications.
FAQ
What is the package type and lead count for PDTB123YK?
The PDTB123YK uses the SOT346 (SC-59A / TO-236) surface-mount package with three leads. Its standardized footprint supports automated pick-and-place assembly on FR4 PCBs and is compatible with reflow soldering profiles used in high-volume manufacturing.
Does PDTB123YK support 3.3 V logic-level drive?
Yes, PDTB123YK supports 3.3 V logic-level drive: its VI(on) is −1.0 V (typ.) at IC = −20 mA, ensuring reliable turn-on when driven by 3.3 V microcontrollers or FPGAs. The integrated R1 resistor also prevents excessive base current draw from low-voltage IO pins.
What is the maximum power dissipation of PDTB123YK at room temperature?
At Tamb ≤ 25 °C, the PDTB123YK has a maximum total power dissipation (Ptot) of 250 mW in the SOT346 package. This limit is defined under standard FR4 PCB mounting conditions and must be respected to maintain junction temperature below 150 °C.
Can PDTB123YK replace BC807-40 in existing designs?
PDTB123YK can replace BC807-40 in SOT346-based designs where fixed-threshold digital switching is acceptable. It offers identical pinout and mechanical fit but adds integrated R1/R2, eliminating two external resistors. No PCB changes are required if the original layout accommodates the same footprint.
What is the resistor ratio tolerance of PDTB123YK and why does it matter?
The R2/R1 resistor ratio tolerance of PDTB123YK is 4.1–5.0 (±10 %), ensuring consistent turn-on characteristics across units and temperatures. This tight ratio control improves batch-to-batch reliability in digital switching applications and reduces sensitivity to supply voltage variations.
PDTB123YK,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):
- 500 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:
- 70 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMT3; MPAK
PDTB123YK,115 FAQ
1.How can I place an order for PDTB123YK,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTB123YK,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 PDTB123YK,115 reliable?
The price and inventory of PDTB123YK,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTB123YK,115 is usually 5 days.
3.What payment methods are accepted for PDTB123YK,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTB123YK,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTB123YK,115?
PDTB123YK,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTB123YK,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 PDTB123YK,115?
For technical support, including PDTB123YK,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTB123YK,115 requirements.
6.How does Aetrix verify that PDTB123YK,115 is sourced from the original manufacturer or authorized distributors?
All PDTB123YK,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 PDTB123YK,115 meets industry standards.
7.What is the process for return or replacement of PDTB123YK,115?
All PDTB123YK,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTB123YK,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 PDTB123YK,115 part is unused and in its original packaging.
Return procedure for PDTB123YK,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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