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Nexperia USA Inc. PDTD143ET-QR
- Part No.:
- PDTD143ET-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTD143ET-QR.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,880
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Product details
Overview
PDTD143ET-QR from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT23 package, designed for automotive digital switching applications. It features integrated 4.7 kΩ base bias resistors (R1 = R2), 50 V VCEO, 500 mA IO, and operation up to 175 °C junction temperature - enabling direct drive of logic-level inputs and low-side loads without external biasing.
For engineers reviewing the PDTD143ET-QR datasheet, PDTD143ET-QR pinout, PDTD143ET-QR application, or PDTD143ET-QR equivalent, key selection criteria include its ±10% R2/R1 ratio tolerance, guaranteed hFE ≥60 at 50 mA, VI(on)/VI(off) thresholds for robust noise immunity, and qualification for under-hood automotive environments.
Technical Context
This RET integrates a monolithic NPN transistor with two precision laser-trimmed on-die resistors (R1 from base to input, R2 from base to emitter), forming a single-input, single-output digital switch topology. Its internal configuration eliminates need for external base resistors while maintaining predictable turn-on/turn-off behavior across temperature.
The device operates as a saturated switch with VCE(sat) ≤100 mV at IC = 50 mA / IB = 2.5 mA, and supports fast switching via fT = 225 MHz (transistor core). Built-in resistor ratio stability (0.9–1.1) ensures consistent current gain across production lots and thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage before breakdown; enables use in 24 V automotive systems with margin. |
| IO | 500 mA - Continuous output current rating; supports driving relays, LEDs, and small solenoids directly. |
| R1 | 4.7 kΩ (3.3–6.1 kΩ) - Input bias resistor value; sets base current for defined saturation under 3.3 V/5 V logic drive. |
| R2/R1 | 1.0 ±0.1 - Precision resistor ratio ensuring stable hFE and predictable switching thresholds. |
| Tj(max) | 175 °C - Maximum junction temperature; qualified per AEC-Q101 for under-hood placement. |
| VI(on) | 1.0–2.2 V - On-state input voltage range at IC = 20 mA; compatible with TTL and CMOS logic families. |
| hFE | ≥60 - Minimum DC current gain at VCE = 5 V, IC = 50 mA; guarantees reliable saturation with standard logic drive. |
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 height. RoHS-compliant, halogen-free, qualified for reflow and wave soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input (base node) | Single logic-level input terminal connected internally to R1; accepts 0–30 V drive with built-in current limiting. |
| 2 (GND) | Ground (emitter) | Emitter connection tied to system ground; serves as common return path for load current and bias network. |
| 3 (O) | Output (collector) | Switched high-side output node; connects to load (e.g., relay coil anode) with collector current sinking to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Eliminates two external resistors, reducing PCB area by ~1.5 mm² and BOM count in digital interface circuits. |
| AEC-Q101 qualification | Validated for automotive Grade 0 (−40 °C to +175 °C) operation, including HTOL, TC, and ESD testing per stress test plan. |
| Thermal derating support | 460 mW Ptot on 4-layer FR4 PCB enables sustained 500 mA switching at ambient ≤85 °C without heatsinking. |
| Logic-compatible thresholds | VI(on) ≤2.2 V and VI(off) ≥0.6 V ensure clean switching with 3.3 V microcontroller GPIOs and noise margins >0.4 V. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Output Stage |
|---|---|
Use Scenario: Driving door lock actuators and interior lighting PWM dimming circuits in vehicle BCMs. IC Role / Device Role / Timing Role: Low-side switch controlling 12 V/24 V inductive and resistive loads with transient suppression handled externally. Use Value: Eliminates discrete base resistor pair, reduces layout complexity, and meets AEC-Q101 requirements for long-term reliability in vibration-prone environments. | Use Scenario: Replacing BC807-40 transistors in 24 V DC digital output modules of DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Logic-level controlled power switch interfacing field devices (sensors, valves) to controller backplane. Use Value: Reduces component count per channel, improves thermal margin over standard transistors, and simplifies firmware-level current limiting via fixed hFE. |
| Automotive HVAC Blower Control | Smart Home Appliance Motor Interface |
Use Scenario: Controlling auxiliary blower fan speed stages in automotive HVAC systems using PWM signals from climate MCU. IC Role / Device Role / Timing Role: High-speed saturated switch operating at 1–20 kHz PWM frequencies with minimal VCE(sat) loss. Use Value: Enables efficient low-power stage control with <100 mV conduction loss at 500 mA, reducing thermal stress on PCB traces and adjacent components. | Use Scenario: Isolating microcontroller GPIOs from brushed DC motor start-up surges in washing machine control boards. IC Role / Device Role / Timing Role: Robust digital interface buffer protecting MCU pins from inductive kickback and ESD events. Use Value: Built-in resistor network provides inherent current limiting during fault conditions, improving system-level surge immunity without added TVS or RC networks. |
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 |
|---|---|---|---|
| PDTB143ET-Q | PNP complement with identical R1/R2 values and ratings; VECO = 50 V, IO = −500 mA. | Used in high-side switching configurations where load connects to VCC and emitter drives ground-referenced control node. | Select when circuit requires sourcing current instead of sinking, e.g., active-high enable lines or PMOS gate drivers. |
| BC807-40 | Discrete NPN transistor without integrated resistors; hFE = 250–630, VCEO = 45 V, IC = 500 mA - requires external RB and RBE. | Offers higher gain and lower VCE(sat) but increases design complexity and board space; not AEC-Q101 qualified. | Choose only for non-automotive cost-sensitive designs where external biasing is acceptable and thermal margin allows. |
Compared with PDTB143ET-Q, PDTD143ET-QR provides complementary polarity for bidirectional load control; versus BC807-40, it trades raw gain for reduced BOM count, guaranteed bias matching, and automotive qualification - making it optimal for volume automotive digital I/O.
Availability
PDTD143ET-QR is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, smart appliance motor interfaces, and HVAC control systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for PDTD143ET-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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
This part belongs to Nexperia's Automotive Qualified Resistor-Equipped Transistor (RET) family, engineered specifically to replace discrete BJT + resistor combinations in automotive digital signal conditioning and load switching applications.
FAQ
What is the maximum continuous collector current for PDTD143ET-QR?
The device is rated for 500 mA continuous output current (IO) under specified PCB mounting conditions: 4-layer FR4 board with tin-plated copper. Derating applies above 25 °C ambient - full rating is maintained up to ~85 °C ambient on thermally optimized layouts.
Does PDTD143ET-QR require external base resistors?
No. It integrates both R1 (4.7 kΩ) and R2 (4.7 kΩ) internally, forming a complete bias network between input (pin 1), emitter (pin 2), and collector (pin 3). This eliminates need for external resistors in standard digital switching configurations.
Is PDTD143ET-QR suitable for PWM-driven inductive loads?
Yes - its 500 mA IO rating, 100 mV VCE(sat), and 225 MHz fT support PWM operation up to 20 kHz. For inductive loads, external flyback diode protection remains required, as the device lacks integrated clamping.
How does the R2/R1 ratio affect switching performance?
The 1.0 ±0.1 R2/R1 ratio ensures stable base current division, resulting in predictable VI(on)/VI(off) thresholds and consistent hFE across temperature and process variation - critical for noise-immune digital interface operation in automotive environments.
PDTD143ET-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):
- 500 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:
- 60 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 225 MHz
- Power - Max:
- 320 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTD143ET-QR FAQ
1.How can I place an order for PDTD143ET-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTD143ET-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 PDTD143ET-QR reliable?
The price and inventory of PDTD143ET-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTD143ET-QR is usually 5 days.
3.What payment methods are accepted for PDTD143ET-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTD143ET-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTD143ET-QR?
PDTD143ET-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTD143ET-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 PDTD143ET-QR?
For technical support, including PDTD143ET-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTD143ET-QR requirements.
6.How does Aetrix verify that PDTD143ET-QR is sourced from the original manufacturer or authorized distributors?
All PDTD143ET-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 PDTD143ET-QR meets industry standards.
7.What is the process for return or replacement of PDTD143ET-QR?
All PDTD143ET-QR units undergo pre-shipment inspection (PSI). If there is an issue with PDTD143ET-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 PDTD143ET-QR part is unused and in its original packaging.
Return procedure for PDTD143ET-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTD143ET-QR Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
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DTC114EKAT146
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DRDNB16W-7
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PDTC114ET,215
Nexperia USA Inc.
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PDTC143ET,215
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MMUN2211LT1G
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