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NXP Semiconductors PDTC143XS,126
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- Part No.:
- PDTC143XS,126
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
PDTC143XS,126.pdf
- Description:
- TRANS PREBIAS NPN 50V TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,690
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Product details
Overview
PDTC143XS,126 from Nexperia is an NPN resistor-equipped transistor (RET) in SOT323 (SC-70) surface-mount package, featuring integrated bias resistors R1 = 4.7 kΩ and R2/R1 ratio of 2.1, rated for 50 V VCEO, 100 mA output current, and AEC-Q101 qualification - used for digital switching and IC input control in automotive and industrial PCBs.
For engineers reviewing the PDTC143XS,126 datasheet, PDTC143XS,126 pinout, PDTC143XS,126 application, or PDTC143XS,126 equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOT323 footprint details, and validated alternatives for high-reliability discrete logic interface design.
Technical Context
The PDTC143XS,126 integrates a monolithic NPN transistor with two precision on-die bias resistors (R1 = 4.7 kΩ, R2 = 10 kΩ), eliminating external base resistors and reducing component count in digital switching circuits. Its built-in resistor network enables direct TTL/CMOS-level drive without external pull-up or current-limiting components.
It operates as a single-stage saturated switch with VCE(sat) ≤ 100 mV at IC = 10 mA / IB = 0.5 mA, VI(on) = 1.5 V typical at IC = 20 mA, and VI(off) = 0.9 V typical at IC = 100 µA - supporting robust noise-immune logic-level interfacing in space-constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - maximum collector-emitter voltage under open-base condition; supports 24 V system rail switching with margin. |
| IO | 100 mA - continuous DC output current capability; suitable for driving LEDs, small relays, or logic inputs. |
| R1 | 4.7 kΩ ±28% - integrated input bias resistor; sets base current for predictable saturation without external parts. |
| R2/R1 | 2.1 - fixed feedback resistor ratio; ensures stable turn-off and prevents latch-up in digital control paths. |
| VCE(sat) | ≤100 mV at IC = 10 mA, IB = 0.5 mA - low saturation voltage minimizes power loss and self-heating in switching mode. |
| fT | 230 MHz - transition frequency of internal transistor; confirms fast switching response for <100 ns digital edges. |
| Ptot | 200 mW at Tamb ≤ 25 °C - thermal limit for SOT323 package; requires derating above 25 °C per published curve. |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
SOT323 (SC-70) 3-pin leaded plastic surface-mount package: 2.2 mm × 1.35 mm × 0.9 mm body, gull-wing leads, standard FR4 footprint with 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Connected internally to R1; accepts logic-level drive (0–5 V); no external base resistor required. |
| 2 | GND (emitter) | Emitter tied to ground reference; provides common return path for load current and bias network. |
| 3 | output (collector) | Switched high-side output node; connects to load (e.g., LED anode or relay coil) referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 + R2 network | Eliminates 2 external resistors; reduces BOM count and PCB area in digital interface stages. |
| 100 mA IO rating | Supports direct drive of medium-current loads (e.g., optocoupler LEDs, small solenoids) without buffer stage. |
| VCE(sat) ≤ 100 mV | Ensures <1 mW conduction loss at 10 mA load - critical for thermally constrained modules and battery-powered systems. |
| AEC-Q101 qualification | Validated for automotive under-hood and infotainment applications requiring extended temperature (-40 to +150 °C) operation. |
| SOT323 package | Enables high-density placement on compact PCBs; compatible with standard reflow soldering profiles (J-STD-020). |
Applications
| Automotive Body Control Module | Industrial PLC Input Stage |
|---|---|
Use Scenario: Level-shifting and isolation of 12 V sensor signals into 3.3 V microcontroller GPIOs. IC Role / Device Role / Timing Role: Digital switch isolating higher-voltage field signals while providing clean logic-compatible output. Use Value: Eliminates need for discrete resistor divider and Schmitt trigger; reduces layout area by >3 mm² per channel. |
Use Scenario: Interfacing 24 V dry-contact inputs to FPGA-based logic controllers in factory automation. IC Role / Device Role / Timing Role: Input conditioning element converting mechanical switch closures into clean CMOS-compatible pulses. Use Value: Built-in hysteresis via R2 feedback ensures noise immunity against EMI in electrically noisy plant environments. |
| Consumer Appliance UI Panel | Medical Diagnostic Equipment |
Use Scenario: Driving status LEDs and buzzer elements from low-power MCU outputs in smart home devices. IC Role / Device Role / Timing Role: Low-side load switch enabling independent control of multiple indicators with minimal firmware overhead. Use Value: 100 mA rating allows direct LED string drive (up to 5× 20 mA LEDs in parallel) without external FET. |
Use Scenario: Isolating patient-connected sensor signals from main processing board in portable diagnostics units. IC Role / Device Role / Timing Role: Signal gating device ensuring safe signal path separation between isolated domains. Use Value: AEC-Q101 qualification provides proven reliability for long-life medical equipment operating 24/7. |
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 |
|---|---|---|---|
| PDTC143XU,115 | Same RET architecture, identical R1/R2 values, but packaged in SOT323 with different tape-and-reel packing (115 vs 126 suffix); same electrical specs and thermal profile. | No functional difference; differs only in packaging configuration (reel quantity and orientation code). | Select PDTC143XU,115 when sourcing from legacy inventory or alternate distribution channels with that reel code. |
| BC847BW,115 | Standard NPN transistor without integrated bias resistors; requires external RB and RBE; higher design complexity and board area. | Used where adjustable gain or non-saturated operation is needed; not drop-in for RET-based designs. | Choose BC847BW,115 only if variable base drive or analog amplification is required - otherwise PDTC143XS,126 reduces part count and improves reproducibility. |
Compared with PDTC143XS,126, PDTC143XU,115 offers identical performance in the same SOT323 package but with alternate reel coding, while BC847BW,115 demands external biasing and increases layout complexity - making PDTC143XS,126 the optimal choice for cost-sensitive, high-volume digital switching where integration and AEC-Q101 compliance are mandatory.
Availability
PDTC143XS,126 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and consumer appliance UI panels requiring stable component supply and long-term lifecycle support.
Supply support for PDTC143XS,126 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 leader in high-volume production of discrete semiconductors, specializing in automotive-qualified logic, power MOSFETs, and resistor-equipped transistors for reliability-critical applications.
The PDTC143XS,126 belongs to Nexperia's PDTC143X series of NPN RETs, designed specifically to replace traditional BJT + resistor combinations in digital interface and load-switching functions across automotive and industrial markets.
FAQ
What is the exact package type and footprint compatibility of PDTC143XS,126?
The PDTC143XS,126 uses the SOT323 (SC-70) package with standardized gull-wing leads, 0.65 mm pin pitch, and 2.2 mm × 1.35 mm body dimensions. Its footprint matches JEDEC MO-203AA and is compatible with IPC-7351B "SOT323" land patterns - confirmed by Nexperia's official reflow soldering footprint diagram (Fig 20) and supported by Digi-Key and Mouser CAD models.
Does PDTC143XS,126 require external base resistors for operation?
No - PDTC143XS,126 integrates R1 = 4.7 kΩ and R2 = 10 kΩ on-die, enabling direct connection to 3.3 V or 5 V logic outputs without external biasing components. This eliminates risk of incorrect resistor selection and reduces PCB routing complexity, as confirmed in Section 1.2 (Features and benefits) and Table 8 of the official datasheet.
Is PDTC143XS,126 qualified for automotive applications?
Yes - PDTC143XS,126 is AEC-Q101 qualified per Section 8.1 of the datasheet, having passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD (HBM ≥ 8 kV). It is rated for operation from −40 °C to +150 °C junction temperature, meeting requirements for under-hood and dashboard-mounted automotive ECUs.
What is the maximum continuous collector current for PDTC143XS,126?
The PDTC143XS,126 supports a maximum continuous output current (IO) of 100 mA, as specified in Table 2 (Quick reference data) and Table 6 (Limiting values). This rating applies at Tamb ≤ 25 °C; derating is required above that ambient temperature per the published Ptot vs. Tamb curve (Fig 1, curve 2).
How does the R2/R1 ratio affect switching behavior in PDTC143XS,126?
The R2/R1 ratio of 2.1 (typical) in PDTC143XS,126 provides active base-emitter shunting during turn-off, ensuring rapid removal of stored charge and preventing unintended conduction due to leakage or noise - directly improving noise immunity and switching consistency in digital control paths, as characterized in Fig 9 (VI(off) vs. IC).
PDTC143XS,126 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- 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 @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 500 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
PDTC143XS,126 FAQ
1.How can I place an order for PDTC143XS,126 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143XS,126 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 PDTC143XS,126 reliable?
The price and inventory of PDTC143XS,126 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143XS,126 is usually 5 days.
3.What payment methods are accepted for PDTC143XS,126?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143XS,126 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143XS,126?
PDTC143XS,126 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143XS,126 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 PDTC143XS,126?
For technical support, including PDTC143XS,126 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143XS,126 requirements.
6.How does Aetrix verify that PDTC143XS,126 is sourced from the original manufacturer or authorized distributors?
All PDTC143XS,126 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 PDTC143XS,126 meets industry standards.
7.What is the process for return or replacement of PDTC143XS,126?
All PDTC143XS,126 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143XS,126, 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 PDTC143XS,126 part is unused and in its original packaging.
Return procedure for PDTC143XS,126:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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