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Nexperia USA Inc. PDTC143ZU,115
- Part No.:
- PDTC143ZU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC143ZU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:28,973
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Product details
Overview
PDTC143ZU from Nexperia is an NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, rated for 50 V VCEO, 100 mA output current, with integrated bias resistors R1 = 4.7 kΩ and R2 = 47 kΩ (R2/R1 = 10). It functions as a single-chip digital switch for IC input control and load switching in industrial digital circuits.
For engineers reviewing the PDTC143ZU datasheet, PDTC143ZU pinout, PDTC143ZU application, or PDTC143ZU equivalent, this device serves as a space- and BOM-optimized replacement for discrete base-resistor + transistor combinations - particularly where simplified drive logic, reduced pick-and-place count, and stable 100 mA switching at ≤50 V are required.
Technical Context
This RET integrates a monolithic NPN transistor with two precision on-die resistors: R1 connects the input terminal to the base, and R2 shunts base to emitter. The fixed R2/R1 ratio of 10 enables predictable turn-on/off thresholds without external bias network design.
It operates as a saturated switch under standard digital logic drive (VI(on) = 0.9–1.3 V at IC = 5 mA; VI(off) = 0.5–0.6 V), delivering VCE(sat) ≤ 100 mV at IC = 5 mA/IB = 0.25 mA, with fT = 230 MHz for the intrinsic transistor - confirming suitability for low-speed digital switching, not RF amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; defines safe switching range for industrial 24 V and 36 V logic-controlled loads. |
| IO | 100 mA - Continuous DC output current capability; supports driving LEDs, small relays, or logic inputs without external current limiting. |
| R1 | 4.7 kΩ ±28% - Input bias resistor enabling direct connection to 3.3 V or 5 V CMOS/TTL outputs without series resistor. |
| R2/R1 | 10 - Fixed internal feedback ratio ensuring stable saturation and reliable cutoff across temperature (−40 °C to 100 °C). |
| VCE(sat) | ≤100 mV at IC = 5 mA, IB = 0.25 mA - Low saturation voltage minimizes power loss and self-heating during active switching. |
| fT | 230 MHz - Transition frequency of the embedded transistor core; confirms fast internal switching but not intended for high-frequency analog use. |
Pinout & Package
The PDTC143ZU is housed in a compact SOT323 (SC-70) plastic surface-mount package measuring 2.0 mm × 1.25 mm × 0.95 mm, optimized for high-density PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node via R1) | Accepts logic-level drive; internally connected to R1 - no external base resistor needed. |
| 2 | Ground (emitter) | Common reference and current return path; tied directly to PCB ground plane. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode or relay coil) with supply referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 + R2 bias network | Eliminates 2 external resistors per switch, reducing BOM count and layout area in multi-channel digital I/O designs. |
| 100 mA continuous output rating | Supports direct drive of common industrial indicators (LEDs), small solenoids, and logic-level translators without heatsinking. |
| SOT323 footprint compatibility | Enables drop-in replacement for BC847-family transistors in existing SC-70 layouts, preserving board real estate and assembly tooling. |
| Specified VI(on)/VI(off) thresholds | Guarantees clean logic-level switching with 3.3 V and 5 V microcontrollers - VI(on) ≤ 1.3 V and VI(off) ≥ 0.5 V across −40 °C to 100 °C. |
Applications
| Industrial Digital I/O | Microcontroller GPIO Expansion |
|---|---|
Use Scenario: Driving status LEDs and optocoupler inputs on PLC I/O modules operating at 24 V DC. IC Role / Device Role / Timing Role: Digital switch translating MCU GPIO signals into isolated or buffered load control paths. Use Value: Reduces component count by replacing discrete transistor + two resistors per channel, lowering assembly cost and failure points. |
Use Scenario: Expanding limited GPIO count on ARM Cortex-M0+ MCUs for sensor enable/disable and peripheral reset control. IC Role / Device Role / Timing Role: Level-shifting and current-boosting buffer for 3.3 V logic controlling 5 V or 12 V peripherals. Use Value: Enables reliable switching at 100 mA with <100 mV saturation drop, minimizing voltage headroom loss in mixed-voltage systems. |
| Cost-Optimized Load Switching | Logic-Level Signal Conditioning |
Use Scenario: Replacing BC847-based switches in consumer appliance control boards where space and BOM cost are critical. IC Role / Device Role / Timing Role: High-side load switch for buzzer drivers, fan controls, and display backlight segments. Use Value: Achieves identical functionality in same SC-70 footprint while cutting resistor placement steps and test points. |
Use Scenario: Cleaning noisy or weak digital signals (e.g., open-drain sensor outputs) before feeding into FPGA configuration pins. IC Role / Device Role / Timing Role: Schmitt-trigger-like digital buffer with defined VI(on)/VI(off) hysteresis behavior due to R2 feedback. Use Value: Improves noise immunity without external hysteresis components - VI(off) ≤ 0.6 V and VI(on) ≥ 0.9 V ensure clean transitions. |
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 |
|---|---|---|---|
| PDTC124EUA,115 | R1 = 22 kΩ, R2 = 47 kΩ → R2/R1 ≈ 2.1; lower input sensitivity; higher VI(on) (~1.6 V) | Better suited for 5 V logic with higher noise margin; less compatible with 3.3 V MCU outputs | Select when driving from 5 V sources where higher input threshold improves noise rejection. |
| BC847B,215 | Discrete NPN transistor; requires external R1 and R2; hFE = 200–450; no built-in resistors | Offers adjustable bias and higher gain but increases BOM, layout area, and tuning effort | Choose only when variable gain, precise bias tuning, or higher fT (>300 MHz) is required. |
Compared with PDTC124EUA,115, PDTC143ZU provides lower VI(on) for robust 3.3 V MCU interfacing; compared with BC847B,215, it eliminates two passives per channel and guarantees matched R1/R2 tolerance - critical for production consistency in high-volume digital switching.
Availability
PDTC143ZU is available at Aetrix Electronics and suitable for industrial digital I/O modules, microcontroller GPIO expansion circuits, and cost-sensitive load switching applications requiring stable component supply and long-term manufacturability.
Supply support for PDTC143ZU 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 expert focused on high-volume, high-reliability essential semiconductors - including logic, discretes, MOSFETs, and ESD protection devices - serving automotive, industrial, and consumer markets.
PDTC143ZU belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete transistor-resistor combinations in digital switching applications - prioritizing BOM reduction, assembly efficiency, and thermal stability in compact SMT packages.
FAQ
Is PDTC143ZU suitable for 3.3 V microcontroller GPIO drive?
Yes. Its VI(on) is specified at 0.9–1.3 V (typ/max) at IC = 5 mA, ensuring reliable turn-on with standard 3.3 V CMOS outputs. VI(off) ≤ 0.6 V further guarantees solid cutoff under low-noise conditions, making it ideal for direct MCU interface without level shifters.
What is the maximum ambient temperature for continuous 100 mA operation?
At Tamb ≤ 25 °C on a standard FR4 PCB (single-sided, 35 μm Cu), PDTC143ZU supports full 100 mA output. Power derating begins above 25 °C - at 75 °C ambient, max continuous current drops to ~60 mA per the 625 K/W Rth(j-a) curve and 200 mW Ptot limit.
Can PDTC143ZU replace BC847 in existing SOT323 layouts?
Yes - it shares identical SOT323 (SC-70) mechanical dimensions and pinout (Emitter-Ground, Collector-Output, Base-Input via R1). However, note that its internal bias network changes drive requirements: no external base resistor is needed, and VI(on)/VI(off) thresholds differ from BC847's pure transistor behavior.
Does PDTC143ZU have automotive qualification?
No. Per Nexperia's 2023 revision history, PDTC143ZU is explicitly designated as non-automotive qualified. It is not tested to AEC-Q101 and lacks automotive-grade screening, traceability, or extended temperature validation. For automotive use, select the -Q qualified variant (e.g., PDTC143ZU-Q).
PDTC143ZU,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):
- 4.7 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:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC143ZU,115 FAQ
1.How can I place an order for PDTC143ZU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143ZU,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 PDTC143ZU,115 reliable?
The price and inventory of PDTC143ZU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143ZU,115 is usually 5 days.
3.What payment methods are accepted for PDTC143ZU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143ZU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143ZU,115?
PDTC143ZU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143ZU,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 PDTC143ZU,115?
For technical support, including PDTC143ZU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143ZU,115 requirements.
6.How does Aetrix verify that PDTC143ZU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC143ZU,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 PDTC143ZU,115 meets industry standards.
7.What is the process for return or replacement of PDTC143ZU,115?
All PDTC143ZU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143ZU,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 PDTC143ZU,115 part is unused and in its original packaging.
Return procedure for PDTC143ZU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143ZU,115 Tags
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MUN5211T1G
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MMUN2211LT1G
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