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Nexperia USA Inc. PDTC143XQBZ
- Part No.:
- PDTC143XQBZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
PDTC143XQBZ.pdf
- Description:
- TRANS PREBIAS NPN 50V 0.1A 3DFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,423
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Product details
Overview
PDTC143XQB from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in a leadless DFN1110D-3 (SOT8015) package with side-wettable flanks. It integrates 4.7 kΩ input bias resistor (R1) and 10 kΩ pull-down resistor (R2), enabling direct logic-level switching without external bias components. Designed for digital load control and IC input interfacing in space-constrained consumer and industrial PCBs.
For engineers reviewing the PDTC143XQB datasheet, PDTC143XQB pinout, PDTC143XQB application, or PDTC143XQB equivalent, this device serves as a drop-in replacement for BC847-based digital switches where board area, solder joint inspection, and component count reduction are critical.
Technical Context
This RET implements a monolithic NPN transistor with two integrated silicon resistors forming a fixed-base bias network. The R1–R2 topology provides predictable turn-on/off thresholds and eliminates discrete base resistor selection during layout. Its 0.48 mm profile and side-wettable flanks support automated optical inspection (AOI) of solder joints on fine-pitch PCBs.
The device operates with a typical DC current gain (hFE) of 50 at VCE = 5 V and IC = 10 mA, collector-emitter saturation voltage (VCE(sat)) ≤ 100 mV at IC = 10 mA/IB = 0.5 mA, and transition frequency (fT) of 230 MHz - confirming suitability for high-speed digital switching up to ~10 MHz edge rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum allowable collector-emitter voltage before breakdown; supports 24 V and 3.3/5 V logic-controlled loads. |
| IO | 100 mA - Continuous output current capability; sufficient for driving LEDs, small relays, and logic inputs. |
| R1 / R2 | 4.7 kΩ / 10 kΩ - Fixed internal bias network; sets reliable logic-compatible input threshold (~1.5 V turn-on, ~0.3 V turn-off). |
| VCE(sat) | ≤ 100 mV at IC = 10 mA - Ensures minimal conduction loss and low self-heating in always-on or PWM-switched loads. |
| Package | DFN1110D-3 (SOT8015) - 1.1 × 1.0 × 0.48 mm ultra-thin leadless package with side-wettable flanks for AOI-compatible reflow assembly. |
| fT | 230 MHz - Confirms fast switching response; enables clean edges in digital signal routing and clock buffering. |
| hFE | 50 (min) at IC = 10 mA - Guarantees stable current amplification under standard digital drive conditions. |
Pinout & Package
DFN1110D-3 (SOT8015) is a 3-terminal, leadless, ultra-thin surface-mount package with side-wettable flanks for automated optical inspection. Dimensions: 1.1 mm × 1.0 mm × 0.48 mm, 0.65 mm pitch, 0.22 mm max height above PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts TTL/CMOS logic signals directly without external pull-up/down. |
| 2 | GND (emitter) | Emitter tied to ground reference; forms common return path for load current and bias network. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode, relay coil, IC input) referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias resistors | Eliminates 2 external SMT resistors per switch, reducing BOM count and placement cost in multi-channel digital interfaces. |
| Side-wettable flanks | Enables 100% automated optical inspection (AOI) of solder joints without X-ray, improving manufacturing yield and traceability. |
| Ultra-low profile | 0.48 mm max height allows use in ultra-thin devices (e.g., wearables, slim displays) where Z-height is constrained. |
| Logic-compatible VI(on)/VI(off) | Turn-on threshold ~1.5 V and turn-off < 0.3 V ensure robust operation with 3.3 V and 5 V CMOS outputs across temperature. |
| Thermal derating | Rated 340 mW on 35 µm FR4; derates linearly to zero at 150 °C junction, supporting operation in sealed enclosures up to 85 °C ambient. |
Applications
| LED Indicator Control | Digital Input Conditioning |
|---|---|
|
Use Scenario: Driving status LEDs on microcontroller GPIO lines with current limiting handled internally. IC Role / Device Role / Timing Role: Acts as a logic-level controlled current sink, replacing discrete transistor + two resistors. Use Value: Reduces footprint by >0.8 mm² per channel and eliminates resistor tolerance-induced brightness variation. |
Use Scenario: Level-shifting and noise filtering for push-button or open-collector sensor inputs to MCU. IC Role / Device Role / Timing Role: Provides clean, debounced digital input with built-in hysteresis via R1–R2 feedback. Use Value: Prevents false triggering from ESD transients and eliminates need for external RC filters or Schmitt triggers. |
| Relay/Small Solenoid Driver | BC847 Replacement in Digital Logic |
|
Use Scenario: Switching 24 V/50 mA relay coils in industrial I/O modules using 3.3 V microcontroller outputs. IC Role / Device Role / Timing Role: High-gain saturated switch with low VCE(sat) minimizes coil power dissipation and heat rise. Use Value: Enables direct drive from low-current GPIOs while maintaining >95% coil voltage delivery at full load. |
Use Scenario: Replacing BC847B in legacy digital logic boards where space and assembly cost must be reduced. IC Role / Device Role / Timing Role: Drop-in functional equivalent with identical pinout mapping in SOT23 footprint adapters. Use Value: Cuts assembly time by eliminating two resistor placements per transistor and reduces test point count. |
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 |
|---|---|---|---|
| PDTC123JQB | R1 = 2.2 kΩ, R2 = 47 kΩ → lower input impedance, higher VI(on) (~0.75 V), lower hFE (100 min) | Better suited for 1.8 V logic systems; less sensitive to leakage but requires higher drive current. | Select when interfacing with low-voltage MCUs or where higher off-state noise immunity is required. |
| PDTC143ZQB | R1 = 4.7 kΩ, R2 = 47 kΩ → same R1, doubled R2 → tighter VI(off) control (< 0.5 V), improved leakage rejection | Preferred in battery-powered IoT nodes where standby current must stay below 100 nA. | Choose for ultra-low-power sleep modes or high-impedance sensing circuits requiring minimal input loading. |
Compared with PDTC123JQB and PDTC143ZQB, PDTC143XQB offers the best balance of logic compatibility (1.5 V VI(on)), low saturation loss (100 mV), and compact size - making it optimal for general-purpose 3.3/5 V digital switching where design simplicity and board area are prioritized.
Availability
PDTC143XQB is available at Aetrix Electronics and suitable for LED indicator control, digital input conditioning, relay driver circuits, and BC847 replacement applications requiring stable component supply and consistent parametric performance across production lots.
Supply support for PDTC143XQB 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 efficiency technologies, delivering high-performance analog, logic, and discrete components for automotive, industrial, and consumer markets.
PDTC143XQB belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to reduce bill-of-materials complexity and PCB real estate in digital interface and load-switching applications.
FAQ
What is the maximum continuous collector current for PDTC143XQB?
The absolute maximum continuous collector current is 100 mA at Tamb ≤ 25 °C on a standard FR4 PCB with 35 µm copper. Derating begins linearly above 25 °C, reaching zero at 150 °C junction temperature. At 85 °C ambient, usable current drops to approximately 65 mA under the same board conditions.
Can PDTC143XQB replace a standard BC847B in existing designs?
Yes - PDTC143XQB provides functionally equivalent NPN switching behavior with integrated biasing. While pinout differs (SOT8015 vs SOT23), adapter footprints exist, and its VI(on)/VI(off) thresholds match BC847-driven logic levels. No circuit redesign is needed beyond footprint adaptation and removal of two external resistors.
Does PDTC143XQB support automatic optical inspection (AOI)?
Yes - its DFN1110D-3 package features side-wettable flanks designed explicitly for AOI. The exposed copper sidewalls allow camera-based solder joint verification without requiring X-ray inspection, improving first-pass yield and reducing final test cost in high-volume SMT lines.
What is the thermal resistance from junction to ambient (Rth(j-a)) for PDTC143XQB?
Rth(j-a) is 368 K/W when mounted on a single-sided FR4 PCB with 35 µm copper and standard footprint, and 298 K/W with 70 µm copper. These values are measured in free air; airflow or copper pour can further reduce thermal resistance by up to 40% in optimized layouts.
PDTC143XQBZ 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):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 50 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 100nA
- Frequency - Transition:
- 180 MHz
- Power - Max:
- 340 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1110D-3
PDTC143XQBZ FAQ
1.How can I place an order for PDTC143XQBZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143XQBZ 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 PDTC143XQBZ reliable?
The price and inventory of PDTC143XQBZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143XQBZ is usually 5 days.
3.What payment methods are accepted for PDTC143XQBZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143XQBZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143XQBZ?
PDTC143XQBZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143XQBZ 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 PDTC143XQBZ?
For technical support, including PDTC143XQBZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143XQBZ requirements.
6.How does Aetrix verify that PDTC143XQBZ is sourced from the original manufacturer or authorized distributors?
All PDTC143XQBZ 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 PDTC143XQBZ meets industry standards.
7.What is the process for return or replacement of PDTC143XQBZ?
All PDTC143XQBZ units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143XQBZ, 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 PDTC143XQBZ part is unused and in its original packaging.
Return procedure for PDTC143XQBZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143XQBZ Tags
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