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Nexperia USA Inc. PDTC143ZQCZ
- Part No.:
- PDTC143ZQCZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
PDTC143ZQCZ.pdf
- Description:
- TRANS PREBIAS NPN 50V 0.1A 3DFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
PDTC143ZQC from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in a DFN1412D-3 (SOT8009) leadless package with side-wettable flanks. It integrates 4.7 kΩ input bias resistor (R1) and 47 kΩ feedback resistor (R2), enabling direct digital logic interfacing without external base resistors. Used for IC input control and low-power load switching in space-constrained consumer and industrial PCBs.
For engineers reviewing the PDTC143ZQC datasheet, PDTC143ZQC pinout, PDTC143ZQC application, or PDTC143ZQC equivalent, this page delivers verified electrical specs, validated pin functions, confirmed thermal derating curves, real-world AOI-compatible solder joint performance, and cross-referenced alternatives for digital switching designs.
Technical Context
This RET implements a monolithic NPN transistor with two integrated thin-film silicon resistors-R1 connected between base and input, R2 between base and emitter-forming a fixed-current bias network. The internal transistor exhibits hFE ≥100 at IC = 10 mA, VCE = 5 V, and VCE(sat) ≤100 mV under IC/IB = 20.
Designed for direct interface with 3.3 V and 5 V CMOS/TTL outputs, it supports VI(on) = 0.9–1.3 V (typ.) and VI(off) = 0.5–0.6 V (max.), ensuring reliable turn-on/turn-off across -40 °C to +100 °C ambient. Its 0.48 mm profile and side-wettable flanks meet IPC-7351B reflow requirements for automated optical inspection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V rail switching and 3.3/5 V logic-controlled circuits. |
| IO | 100 mA - Continuous DC output current capability; sufficient for driving LEDs, small relays, and logic inputs. |
| R1 / R2 | 4.7 kΩ / 47 kΩ - Fixed internal bias network eliminates need for external base resistors and reduces BOM count by one component. |
| VCE(sat) | ≤100 mV at IC = 10 mA, IB = 0.5 mA - Low saturation voltage minimizes power loss and self-heating during switching. |
| Ptot | 360 mW (FR4, 35 µm Cu) - Thermal limit defines maximum continuous dissipation on standard PCBs without heatsinking. |
| Package | DFN1412D-3 (SOT8009) - 1.4 × 1.2 × 0.48 mm ultra-small leadless package with side-wettable flanks for AOI-verified solder joints. |
| fT | 230 MHz - Transition frequency of the internal transistor; supports fast digital switching up to ~10–20 MHz edge rates. |
Pinout & Package
DFN1412D-3 (SOT8009) is a 3-terminal, leadless, surface-mount plastic package with side-wettable flanks, measuring 1.4 mm × 1.2 mm × 0.48 mm and featuring a 0.8 mm pitch. Its low 0.5 mm height and coplanar terminals support high-density routing and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Connects to digital logic output; internal R1 routes signal to transistor base while R2 provides emitter feedback for stable biasing. |
| 2 | GND (emitter) | Emitter terminal tied to system ground; serves as common reference for both input and output paths. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode or IC input pull-up) referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Monolithic 4.7 kΩ + 47 kΩ resistor pair eliminates discrete base resistor placement and reduces layout complexity. |
| AOI-compatible packaging | Side-wettable flanks on DFN1412D-3 enable automated optical inspection of solder fillets, improving manufacturing yield. |
| Low-profile mounting | 0.48 mm body height allows use in ultra-thin devices such as wearables and compact IoT sensors. |
| Digital logic compatibility | VI(on) ≤1.3 V and VI(off) ≥0.5 V ensure robust switching with 3.3 V and 5 V CMOS/TTL outputs without level-shifting. |
| Thermal reliability | Rth(j-a) = 348 K/W (35 µm Cu FR4) enables operation up to +100 °C ambient without derating in typical consumer applications. |
Applications
| LED Indicator Control | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Driving status LEDs from MCU GPIO pins with limited drive strength. IC Role / Device Role / Timing Role: Acts as a low-loss, logic-level-controlled current switch replacing discrete BJT + resistor combinations. Use Value: Reduces board area by 30% versus discrete solution and eliminates resistor placement error risk during SMT assembly. |
Use Scenario: Extending limited GPIO count to control multiple peripheral enable lines. IC Role / Device Role / Timing Role: Functions as a non-inverting digital buffer with 100 mA sink capability per channel. Use Value: Enables direct connection to 3.3 V MCU outputs without external pull-ups or level shifters, cutting bill-of-materials cost. |
| Logic-Level Signal Translation | Low-Power Load Switching |
|
Use Scenario: Converting open-drain I²C bus signals to active-high enable inputs for PMICs or regulators. IC Role / Device Role / Timing Role: Provides clean, fast edge transitions with <100 mV VCE(sat) and 230 MHz fT. Use Value: Maintains signal integrity up to 1 MHz clock rates while consuming <1 µA in off-state (ICEO ≤100 nA). |
Use Scenario: Switching 5 V/100 mA loads like small solenoids or sensor bias rails in battery-powered equipment. IC Role / Device Role / Timing Role: Serves as a compact, thermally efficient high-side switch with built-in current limiting via R1/R2 ratio. Use Value: Delivers 100 mA continuous current with <0.1 W dissipation at full load, avoiding thermal throttling in sealed enclosures. |
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 |
|---|---|---|---|
| PDTC143XQC | R1 = 4.7 kΩ, R2 = 10 kΩ (vs. 47 kΩ); lower R2/R1 ratio yields higher base current and faster turn-on. | Better suited for high-speed switching (>100 kHz) but less noise-immune in noisy environments due to lower VI(off). | Select when minimizing propagation delay is critical and input noise is controlled. |
| BC847B, SOT-23 | Discrete NPN BJT requiring external 10 kΩ base resistor; no integrated feedback resistor; larger SOT-23 footprint. | Requires additional passive component and PCB area; lacks built-in noise immunity from R2 feedback path. | Choose only if legacy design reuse or parametric tuning of base bias is required. |
Compared with PDTC143XQC, PDTC143ZQC offers superior noise margin (VI(off) = 0.6 V vs. 0.3 V) and tighter gain consistency due to higher R2/R1 ratio, while BC847B demands extra layout effort and increases test point count-making PDTC143ZQC optimal for high-volume, space-constrained digital interface designs.
Availability
PDTC143ZQC is available at Aetrix Electronics and suitable for LED indicator control, microcontroller GPIO expansion, logic-level signal translation, and low-power load switching requiring stable component supply across consumer electronics, industrial HMI panels, and IoT endpoint designs.
Supply support for PDTC143ZQC 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 essential semiconductors for power management, logic, analog, and MOSFETs, serving automotive, industrial, and consumer markets with high-volume, high-reliability components.
PDTC143ZQC belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to replace discrete BJT-resistor combinations in digital switching applications-reducing footprint, improving manufacturability, and enhancing signal integrity in high-density PCBs.
FAQ
What is the maximum recommended operating temperature for PDTC143ZQC?
The junction temperature must not exceed 150 °C, and the ambient operating range is -55 °C to +150 °C. For continuous operation at full 100 mA load, derating begins above 25 °C ambient per Figure 1: at +85 °C ambient, maximum allowable power drops to ~220 mW on a standard FR4 board with 35 µm copper.
Can PDTC143ZQC be used with 1.8 V logic inputs?
No-its VI(on) minimum is 0.9 V (typ.) at IC = 5 mA, but guaranteed turn-on requires ≥1.3 V input. At 1.8 V, it may operate unreliably due to insufficient base drive; a level shifter or alternative RET like PDTC123JQC (VI(on) = 0.75 V typ.) is recommended for 1.8 V systems.
How does the R2 resistor improve noise immunity?
R2 (47 kΩ) connects base to emitter, forming a voltage divider with R1 that raises the effective input threshold (VI(off)) to 0.6 V. This prevents false triggering from ESD transients or crosstalk below 0.5 V, unlike single-resistor RETs or discrete BJTs lacking emitter feedback.
Is PDTC143ZQC pin-compatible with other parts in the PDTCxxxQC series?
Yes-all variants (PDTC143XQC, PDTC123JQC, PDTC143ZQC, etc.) share identical DFN1412D-3 (SOT8009) pinout: Pin 1 = Input, Pin 2 = GND, Pin 3 = Output. Mechanical and solder footprint compatibility enables drop-in substitution where electrical parameters align with design requirements.
PDTC143ZQCZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-XDFN Exposed Pad
- 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):
- 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):
- 100nA
- Frequency - Transition:
- 230 MHz
- Power - Max:
- 360 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1412D-3
PDTC143ZQCZ FAQ
1.How can I place an order for PDTC143ZQCZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143ZQCZ 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 PDTC143ZQCZ reliable?
The price and inventory of PDTC143ZQCZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143ZQCZ is usually 5 days.
3.What payment methods are accepted for PDTC143ZQCZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143ZQCZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143ZQCZ?
PDTC143ZQCZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143ZQCZ 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 PDTC143ZQCZ?
For technical support, including PDTC143ZQCZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143ZQCZ requirements.
6.How does Aetrix verify that PDTC143ZQCZ is sourced from the original manufacturer or authorized distributors?
All PDTC143ZQCZ 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 PDTC143ZQCZ meets industry standards.
7.What is the process for return or replacement of PDTC143ZQCZ?
All PDTC143ZQCZ units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143ZQCZ, 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 PDTC143ZQCZ part is unused and in its original packaging.
Return procedure for PDTC143ZQCZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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