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Nexperia USA Inc. PDTC143EU/ZLX
- Part No.:
- PDTC143EU/ZLX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
PDTC143EU/ZLX.pdf
- Description:
- TRANS PREBIAS
- Quantity:
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Product details
Overview
PDTC143EU 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 = R2 = 4.7 kΩ. It functions as a single-chip digital switch for IC input control and low-power load switching in industrial logic interfaces.
For engineers reviewing the PDTC143EU datasheet, PDTC143EU pinout, PDTC143EU application, or PDTC143EU equivalent, this device serves as a drop-in replacement for BC847-based digital switching circuits-offering simplified biasing, reduced BOM count, and validated performance at 25 °C to 150 °C junction temperature.
Technical Context
This RET integrates an NPN transistor with two precision on-die resistors: R1 connects base to input, R2 shunts base to emitter, enabling direct TTL/CMOS-level drive without external bias components. Its fixed R2/R1 ratio of 1.0 ±0.2 ensures stable saturation behavior across temperature.
The device operates as a saturated switch with VCE(sat) ≤ 150 mV at IC = 10 mA / IB = 0.5 mA, and supports VI(on) ≤ 1.9 V and VI(off) ≥ 1.1 V at 25 °C-making it compatible with 3.3 V and 5 V logic families while maintaining noise margin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V industrial control rails with safety margin. |
| IO | 100 mA - Continuous DC output current capability; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 4.7 kΩ (typ) - Input bias resistor value; sets base current when driven from 3.3 V/5 V sources without external components. |
| R2/R1 | 1.0 (typ) - Ratio determines turn-off speed and leakage suppression; ensures reliable cutoff under varying temperature. |
| VCE(sat) | ≤150 mV at IC=10 mA/IB=0.5 mA - Low saturation voltage minimizes power loss and self-heating in switching mode. |
| fT | 230 MHz (typ) - Transition frequency of internal transistor; supports fast digital edge rates up to ~10–20 MHz switching. |
| Ptot | 200 mW at Tamb ≤ 25 °C - Total power dissipation limit on FR4 PCB; derates linearly above 25 °C per 625 K/W thermal resistance. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 3-pin, 1.3 mm pitch, 2.0 mm × 1.25 mm × 0.95 mm body size, optimized for high-density PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts logic-level voltage (≤30 V) to enable transistor conduction. |
| 2 | Ground (emitter) | Emitter terminal tied to system ground; provides return path for load current and R2 bias network. |
| 3 | Output (collector) | Switched output node; sinks up to 100 mA to ground when input is asserted; connects to load between VCC and pin 3. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | On-die R1 = R2 = 4.7 kΩ eliminates need for two external resistors, reducing layout area and assembly steps. |
| Logic-compatible input threshold | VI(on) ≤ 1.9 V and VI(off) ≥ 1.1 V at 25 °C ensure robust switching with standard 3.3 V CMOS outputs. |
| Thermal reliability | Rth(j-a) = 625 K/W on FR4 PCB enables operation up to 150 °C junction temperature with defined derating. |
| Low saturation loss | VCE(sat) ≤ 150 mV at rated current reduces power dissipation to <1.5 mW in typical 10 mA loads. |
| High-speed switching | fT = 230 MHz supports clean digital edges and sub-100 ns turn-on/turn-off in unloaded conditions. |
Applications
| Industrial Digital Control | Microcontroller GPIO Expansion |
|---|---|
Use Scenario: Driving optocoupler inputs or level-shifting signals in PLC I/O modules operating at 24 V supply. IC Role / Device Role / Timing Role: Digital switch interfacing microcontroller outputs to isolated field-side circuitry. Use Value: Eliminates discrete resistor pair, saving 2.5 mm² PCB area and reducing pick-and-place cycle time by one placement step. |
Use Scenario: Extending limited GPIO count on Cortex-M0+ MCUs to control multiple LED indicators or status relays. IC Role / Device Role / Timing Role: Low-latency, current-sinking buffer for active-low LED drivers or relay coil interfaces. Use Value: Enables direct 3.3 V MCU drive without external biasing, supporting >10 kHz toggle rates with <200 ns propagation delay. |
| BC847 Replacement Circuit | Low-Power Load Switching |
Use Scenario: Upgrading legacy BC847-based logic inverters in cost-sensitive consumer electronics assemblies. IC Role / Device Role / Timing Role: Functionally identical inverter with built-in biasing, requiring zero schematic changes. Use Value: Reduces bill-of-materials by two 0402 resistors and associated footprint, lowering total component cost by ~$0.015/unit at volume. |
Use Scenario: Enabling/disabling sensor bias rails or auxiliary power domains in battery-powered IoT nodes. IC Role / Device Role / Timing Role: High-side or low-side load switch controlled by ultra-low-power MCU sleep-mode pins. Use Value: Draws <100 nA leakage when off (ICEO ≤ 5 µA at 150 °C), extending shelf life and standby runtime in energy-harvesting designs. |
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 |
|---|---|---|---|
| PDTC124EU | R1 = 22 kΩ, R2 = 47 kΩ → higher input impedance, lower IB, slower turn-on | Better suited for high-impedance 5 V logic sources; less suitable for 3.3 V MCU drive without margin | Select when driving from weak-sourcing controllers or where lower base current reduces system power. |
| BC847B | Discrete NPN BJT with no built-in resistors; requires external RB and RBE | Offers adjustable gain and biasing but increases component count, layout complexity, and calibration sensitivity | Choose only when precise hFE control or variable saturation voltage is required beyond RET capabilities. |
Compared with PDTC124EU and BC847B, PDTC143EU delivers optimal balance of 3.3 V logic compatibility, minimal external parts, and thermal robustness-making it preferred for space-constrained industrial digital interfaces where design simplicity and production yield are critical.
Availability
PDTC143EU is available at Aetrix Electronics and suitable for industrial digital control, microcontroller GPIO expansion, BC847 replacement circuits, and low-power load switching requiring stable component supply and consistent SC-70 packaging.
Supply support for PDTC143EU 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 logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
PDTC143EU belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT + resistor combinations in digital switching applications-reducing design time and manufacturing cost.
FAQ
What is the maximum safe input voltage applied to Pin 1 (Input)?
The absolute maximum input voltage (VI) is −10 V to +30 V per datasheet limiting values. Exceeding +30 V risks damaging the internal R1 resistor or base-emitter junction. For 5 V logic systems, no series resistor is needed; for 12 V or 24 V control, a current-limiting resistor must be added externally to keep input current below 600 μA.
Can PDTC143EU be used in analog amplifier configurations?
No. PDTC143EU is designed exclusively for digital switching operation. Its integrated resistors fix the base bias point, preventing stable DC operating point selection required for linear amplification. The specified hFE range (30 min) applies only under saturated switching conditions-not small-signal AC gain.
How does thermal performance compare between PDTC143EU and BC847B in the same SOT323 footprint?
PDTC143EU has identical Rth(j-a) (625 K/W) to BC847B on FR4 PCB, but its built-in resistors dissipate additional power during switching transitions. At 100 mA continuous load, junction temperature rise is ~15 °C higher than BC847B with optimally sized external resistors-requiring attention to ambient temperature limits in sealed enclosures.
Is PDTC143EU qualified for automotive applications?
No. Per Nexperia's revision history and legal disclaimers, PDTC143EU is explicitly designated as non-automotive qualified. It lacks AEC-Q101 stress testing and automotive-grade process controls. For automotive use, select the -Q qualified variant (e.g., PDTC143EU-Q) which undergoes extended temperature cycling, humidity testing, and failure analysis per AEC standards.
PDTC143EU/ZLX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Resistor - Base (R1):
- -
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- -
- Power - Max:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PDTC143EU/ZLX FAQ
1.How can I place an order for PDTC143EU/ZLX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143EU/ZLX 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 PDTC143EU/ZLX reliable?
The price and inventory of PDTC143EU/ZLX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143EU/ZLX is usually 5 days.
3.What payment methods are accepted for PDTC143EU/ZLX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143EU/ZLX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143EU/ZLX?
PDTC143EU/ZLX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143EU/ZLX 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 PDTC143EU/ZLX?
For technical support, including PDTC143EU/ZLX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143EU/ZLX requirements.
6.How does Aetrix verify that PDTC143EU/ZLX is sourced from the original manufacturer or authorized distributors?
All PDTC143EU/ZLX 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 PDTC143EU/ZLX meets industry standards.
7.What is the process for return or replacement of PDTC143EU/ZLX?
All PDTC143EU/ZLX units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143EU/ZLX, 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 PDTC143EU/ZLX part is unused and in its original packaging.
Return procedure for PDTC143EU/ZLX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143EU/ZLX 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.
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