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Nexperia USA Inc. PDTC143ZU/ZLX
- Part No.:
- PDTC143ZU/ZLX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
PDTC143ZU/ZLX.pdf
- Description:
- TRANS PREBIAS
- Quantity:
- Payment:
- Shipping:
Inventory:3,560
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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. It functions as a single-chip digital switch for IC input control and low-power 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 consistent hFE-independent switching behavior are required.
Technical Context
This RET integrates a monolithic NPN transistor with two precision laser-trimmed 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), delivering VCE(sat) ≤ 100 mV and supporting fast switching up to 230 MHz fT (transistor core). Thermal resistance Rth(j-a) is 625 K/W on FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; defines safe switching range for 24 V industrial logic and sensor interfaces. |
| IO | 100 mA - Continuous DC output current capability; sufficient for driving LED indicators, small relays, or logic inputs. |
| R1 | 4.7 kΩ - Input bias resistor value; sets base current magnitude when driven from 3.3 V or 5 V logic with ~0.7 mA typical IB. |
| R2/R1 | 10 - Fixed internal resistor ratio; ensures stable turn-off by providing strong base-emitter shunting, reducing sensitivity to leakage currents. |
| 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; supports high-speed digital switching up to ~10–20 MHz edge rates. |
| hFE | ≥100 at IC = 10 mA, VCE = 5 V - Guaranteed DC current gain ensures reliable saturation even with process variation. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, 3-terminal configuration with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base connection via R1) | Logic-level input node; accepts 0.6–1.3 V VI(off)/VI(on) thresholds; internally connected to R1 top and R2 top. |
| 2 | GND (emitter) | Emitter reference and return path; must be tied to system ground to complete bias and output current loop. |
| 3 | Output (collector) | Switched output node; sinks up to 100 mA to GND when input is asserted; connects to load between VCC and pin 3. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Monolithic R1 (4.7 kΩ) and R2 (47 kΩ) eliminate need for two external resistors and associated layout area. |
| Reduced component count | Replaces one transistor + two resistors with single SOT323 device-cuts BOM line items and placement steps. |
| Predictable switching thresholds | VI(on) = 0.9–1.3 V and VI(off) = 0.5–0.6 V ensure robust operation across temperature (−40 °C to 100 °C). |
| Thermal reliability | Rated junction temperature up to 150 °C and 200 mW Ptot enable sustained operation in compact industrial enclosures. |
Applications
| Industrial Digital Control | IC Input Conditioning |
|---|---|
Use Scenario: Driving optocoupler inputs or microcontroller GPIOs in PLC I/O modules. IC Role / Device Role / Timing Role: Level-shifting and current-limiting switch that isolates and conditions 24 V field signals into 3.3 V logic domains. Use Value: Eliminates discrete resistor networks while maintaining noise immunity and guaranteed VI(on)/VI(off) margins across operating temperature. |
Use Scenario: Enabling/disabling analog sensor enable pins or reset lines in battery-powered edge nodes. IC Role / Device Role / Timing Role: Low-leakage, rail-to-rail compatible switch controlling power or signal paths to peripherals. Use Value: ICEO ≤ 5 µA at 150 °C ensures minimal standby current drain; VCE(sat) ≤ 100 mV avoids voltage droop on critical control lines. |
| LED Indicator Driver | Low-Power Load Switch |
Use Scenario: Direct-driving status LEDs from MCU GPIOs in HMI panels or power supplies. IC Role / Device Role / Timing Role: Constant-current sink switch with built-in current-setting via R1/R2 ratio and VCE(sat). Use Value: Delivers stable 5–10 mA LED current from 3.3 V/5 V sources without external current-limiting resistor. |
Use Scenario: Switching 12 V solenoid coils or small fans in HVAC control boards. IC Role / Device Role / Timing Role: General-purpose low-side switch handling intermittent loads up to 100 mA. Use Value: 50 V VCEO rating provides margin against inductive kickback; SC-70 footprint saves board space versus SO-23 or SOT23 alternatives. |
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 |
|---|---|---|---|
| BC847B, SOT23 | Discrete NPN transistor requiring external R1/R2; hFE = 200–450 (vs. RET's fixed bias); no integrated resistors. | Requires 2 extra passives and layout area; less predictable VI(on)/VI(off); higher assembly cost. | Select when fine-tuned bias or higher hFE is needed; avoid if minimizing BOM count or board area is critical. |
| PDTA143ZU | PNP complement with identical R1/R2 values and SOT323 package; VECO = 50 V, IO = −100 mA. | Used for high-side switching or inverted logic control; not interchangeable due to polarity and pinout reversal. | Select only for complementary high-side drive; requires redesign of control logic and PCB layout. |
Compared with BC847B, PDTC143ZU reduces passive count and improves production repeatability but trades off bias flexibility; versus PDTA143ZU, it offers direct low-side compatibility but cannot replace PNP configurations without circuit rework.
Availability
PDTC143ZU is available at Aetrix Electronics and suitable for industrial digital control, IC input conditioning, LED indicator driving, and low-power load switching 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 for automotive, industrial, and consumer markets.
PDTC143ZU belongs to Nexperia's Resistor-Equipped Transistor (RET) product line-designed specifically to simplify digital interface design by integrating bias resistors into miniature SMD packages for industrial and computing applications.
FAQ
What is the maximum continuous output current for PDTC143ZU?
The PDTC143ZU is rated for 100 mA continuous DC output current (IO) under ambient conditions ≤25 °C with proper PCB thermal relief. Derating applies above 25 °C per the 625 K/W thermal resistance curve; at 75 °C ambient, usable current drops to approximately 65 mA to maintain Tj ≤ 150 °C.
Can PDTC143ZU replace a standard BC847 transistor directly?
No-it is not a drop-in replacement. PDTC143ZU has integrated bias resistors and a 3-pin SOT323 pinout (Input/GND/Output), whereas BC847 uses a 3-pin SOT23 pinout (Collector/Base/Emitter) with no internal resistors. Circuit redesign is required to accommodate the RET's input-driven architecture and different terminal roles.
What is the function of the R2 resistor in PDTC143ZU?
R2 (47 kΩ) connects the transistor base to emitter internally, forming a pull-down path that ensures rapid and reliable turn-off by shunting residual base charge. This eliminates reliance on external pull-downs and improves noise immunity-especially critical in industrial environments with EMI or floating inputs.
Is PDTC143ZU qualified for automotive applications?
No. Per Nexperia's 2023 revision history, PDTC143ZU is explicitly designated as non-automotive qualified. It lacks AEC-Q101 stress testing and automotive-grade screening. For automotive use, select the -Q qualified variant (e.g., PDTC143ZU-Q) or consult Nexperia's automotive RET portfolio.
PDTC143ZU/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:
- -
PDTC143ZU/ZLX FAQ
1.How can I place an order for PDTC143ZU/ZLX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143ZU/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 PDTC143ZU/ZLX reliable?
The price and inventory of PDTC143ZU/ZLX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143ZU/ZLX is usually 5 days.
3.What payment methods are accepted for PDTC143ZU/ZLX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143ZU/ZLX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143ZU/ZLX?
PDTC143ZU/ZLX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143ZU/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 PDTC143ZU/ZLX?
For technical support, including PDTC143ZU/ZLX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143ZU/ZLX requirements.
6.How does Aetrix verify that PDTC143ZU/ZLX is sourced from the original manufacturer or authorized distributors?
All PDTC143ZU/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 PDTC143ZU/ZLX meets industry standards.
7.What is the process for return or replacement of PDTC143ZU/ZLX?
All PDTC143ZU/ZLX units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143ZU/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 PDTC143ZU/ZLX part is unused and in its original packaging.
Return procedure for PDTC143ZU/ZLX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143ZU/ZLX Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
Rohm Semiconductor
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DTC114EKAT146
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DDTD113ZC-7-F
Diodes Incorporated
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DRDNB16W-7
Diodes Incorporated
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PDTC114ET,215
Nexperia USA Inc.
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PDTC143ZT,215
Nexperia USA Inc.
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PDTC143ET,215
Nexperia USA Inc.
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PDTC143XT,215
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MMUN2211LT1G
onsemi
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PDTC144ET,215
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