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Nexperia USA Inc. PDTC143ET-QR
- Part No.:
- PDTC143ET-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC143ET-QR.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,184
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Product details
Overview
PDTC143ET-QR from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in SOT23 package, featuring integrated 4.7 kΩ input and feedback bias resistors (R1 = R2 = 4.7 kΩ). It functions as a single-chip digital switch for IC input control and load switching in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the PDTC143ET-QR datasheet, PDTC143ET-QR pinout, PDTC143ET-QR application, or PDTC143ET-QR equivalent, this part offers AEC-Q101-qualified performance with verified VI(on)/VI(off) thresholds, hFE ≥30 at 10 mA, and thermal resistance of 500 K/W - critical for high-reliability digital interface design.
Technical Context
This RET integrates an NPN transistor with two precision-matched on-die resistors: R1 connects base to input, R2 ties base to emitter, enabling direct logic-level drive without external biasing. Its fixed R2/R1 ratio of 1.0 ±0.2 ensures stable saturation behavior across temperature.
The device operates within −65 °C to +150 °C ambient range, supports 100 mA continuous output current, and delivers VCE(sat) ≤150 mV at IC = 10 mA/IB = 0.5 mA - confirming robust low-loss switching capability under automotive thermal stress conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - maximum collector-emitter voltage before breakdown; enables use in 24 V automotive systems with margin. |
| IO | 100 mA - guaranteed continuous output current; sufficient for driving LED indicators, relay coils, and logic inputs. |
| R1 | 4.7 kΩ (typ) - sets input current limit and defines logic-high threshold; eliminates need for external base resistor. |
| R2/R1 | 1.0 (typ) - ensures predictable turn-off behavior and prevents latch-up in noisy environments. |
| VCE(sat) | ≤150 mV at IC = 10 mA, IB = 0.5 mA - minimizes power loss and self-heating during active switching. |
| hFE | ≥30 at VCE = 5 V, IC = 10 mA - guarantees reliable current amplification for digital signal translation. |
| Tj(max) | 150 °C - junction temperature limit aligned with AEC-Q101 automotive qualification requirements. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body; optimized for automated placement and reflow soldering on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base via R1) | Logic-level input node; internal R1 (4.7 kΩ) limits base current and enables direct MCU GPIO connection. |
| 2 | GND (emitter) | Emitter reference terminal; serves as common return path for load current and bias network ground. |
| 3 | Output (collector) | Switched high-side output node; sinks up to 100 mA to GND when driven high at Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Qualified per Automotive Electronics Council standard for discrete semiconductors; validated for under-hood ECU use. |
| Integrated bias network | R1 = R2 = 4.7 kΩ ±28% - eliminates two external resistors, reducing BOM count and layout area by ~30% vs. BC847-Q + bias resistors. |
| Low VCE(sat) | ≤150 mV at rated current - reduces power dissipation to <1.5 mW at 10 mA, enabling compact thermal design. |
| Wide operating temperature | −65 °C to +150 °C ambient - supports engine bay, transmission control, and industrial motor drive applications. |
| Standard SOT23 footprint | Compatible with legacy BC847 layouts - allows drop-in replacement without PCB redesign in existing digital interface circuits. |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Driving LED status indicators and small solenoid valves in door modules and lighting controllers. IC Role / Device Role / Timing Role: Digital switch translating 3.3 V/5 V MCU GPIO signals into controlled current paths. Use Value: Eliminates discrete bias resistors and reduces component count while maintaining AEC-Q101 compliance. |
Use Scenario: Level-shifting and isolation between microcontroller I/O and 24 V field sensors in PLC I/O cards. IC Role / Device Role / Timing Role: Input conditioning element converting industrial voltage levels to safe logic-compatible signals. Use Value: Built-in resistor matching ensures consistent VI(on)/VI(off) thresholds across temperature, improving noise immunity. |
| Consumer Appliance Control Board | Medical Diagnostic Equipment |
Use Scenario: Controlling buzzer drivers and display backlight enable lines in washing machine and HVAC control panels. IC Role / Device Role / Timing Role: Low-power digital load switch with fast turn-on/turn-off response for user feedback signals. Use Value: 100 mA rating and 150 mV VCE(sat) ensure minimal heat generation in sealed enclosures. |
Use Scenario: Isolating microcontroller outputs from peripheral actuators in portable diagnostic devices. IC Role / Device Role / Timing Role: Safe, low-risk interface buffer preventing backfeed and overcurrent damage to sensitive SoCs. Use Value: AEC-Q101 qualification provides proven reliability margin for long-life medical equipment deployments. |
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-Q | Discrete NPN transistor requiring external R1/R2; no integrated bias network. | Higher BOM count and layout complexity; lacks AEC-Q101 qualification out-of-box. | Select when custom bias ratios or higher hFE (>200) are required beyond PDTC143ET-QR's fixed configuration. |
| PDTA143ET | PNP complement with identical R1/R2 values and SOT23 package; VCEO = −50 V, IO = −100 mA. | Used for high-side switching or inverted logic configurations where sourcing current is needed. | Choose for complementary pair design in H-bridge drivers or dual-rail digital interface circuits. |
Compared with BC847B-Q and PDTA143ET, PDTC143ET-QR delivers plug-and-play digital switching with zero external components, AEC-Q101 assurance, and matched resistor tolerance - making it optimal for cost-sensitive, high-volume automotive and industrial control nodes where design cycle time and supply chain simplicity are critical.
Availability
PDTC143ET-QR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer appliance control boards requiring stable component supply and AEC-Q101-compliant performance.
Supply support for PDTC143ET-QR 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 mobile markets.
PDTC143ET-QR belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT + bias resistor combinations in automotive digital control and interface applications.
FAQ
What is the exact R1 and R2 value tolerance for PDTC143ET-QR?
The datasheet specifies R1 = 4.7 kΩ with min/typ/max of 3.3 kΩ / 4.7 kΩ / 6.1 kΩ, corresponding to ±28% tolerance. R2/R1 ratio is 0.8–1.2 (±20%), confirmed by test conditions in Table 8 and Section 11. These values are measured at 25 °C using the defined resistor test circuit in Figure 9.
Can PDTC143ET-QR replace BC847B in existing designs without layout changes?
Yes - PDTC143ET-QR uses the same SOT23 footprint and pinout (input/base on Pin 1, emitter/GND on Pin 2, collector/output on Pin 3), enabling direct PCB-level replacement. However, verify that the integrated 4.7 kΩ R1 matches the original base drive requirement; no external resistors are needed post-replacement.
Is VI(on) guaranteed across the full −40 °C to +125 °C operating range?
VI(on) is specified as 2.5 V (max) at 25 °C and 1.9 V (typ) at 100 °C per Figure 5. While not explicitly guaranteed across the full range, the typical curve shows VI(on) decreases with rising temperature - ensuring reliable turn-on at 3.3 V logic levels even at +125 °C ambient.
Does PDTC143ET-QR support PWM switching at frequencies above 10 kHz?
Yes - with fT = 230 MHz (typ) for the internal transistor and low Cc = 2.5 pF, the device supports clean switching well beyond 10 kHz. Measured VCE(sat) and hFE stability across temperature (Figures 3–4) confirm suitability for repetitive digital switching in fan control and LED dimming circuits.
PDTC143ET-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 4.7 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 30 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- 230 MHz
- Power - Max:
- 250 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTC143ET-QR FAQ
1.How can I place an order for PDTC143ET-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143ET-QR 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 PDTC143ET-QR reliable?
The price and inventory of PDTC143ET-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143ET-QR is usually 5 days.
3.What payment methods are accepted for PDTC143ET-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143ET-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143ET-QR?
PDTC143ET-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143ET-QR 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 PDTC143ET-QR?
For technical support, including PDTC143ET-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143ET-QR requirements.
6.How does Aetrix verify that PDTC143ET-QR is sourced from the original manufacturer or authorized distributors?
All PDTC143ET-QR 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 PDTC143ET-QR meets industry standards.
7.What is the process for return or replacement of PDTC143ET-QR?
All PDTC143ET-QR units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143ET-QR, 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 PDTC143ET-QR part is unused and in its original packaging.
Return procedure for PDTC143ET-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143ET-QR Tags
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MUN5211T1G
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DTC043ZEBTL
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