My Inquiry
My Account
Nexperia USA Inc. PDTC144ET-QR
- Part No.:
- PDTC144ET-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC144ET-QR.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,019
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PDTC144ET-QR from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT23 package, featuring integrated 47 kΩ input bias resistor (R1) and 47 kΩ emitter feedback resistor (R2), 50 V VCEO, 100 mA IO, and optimized for automotive digital switching applications such as IC input control and load switching.
For engineers reviewing the PDTC144ET-QR datasheet, PDTC144ET-QR pinout, PDTC144ET-QR application, or PDTC144ET-QR equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, automotive-grade reliability context, and direct functional alternatives to BC847-Q series transistors.
Technical Context
This RET integrates a monolithic NPN transistor with two precision laser-trimmed on-die resistors-R1 connected between base and input, R2 between base and emitter-enabling single-pin digital drive without external bias components. It operates with VI(on) = 1.6–3.0 V and VI(off) = 0.8–1.2 V at 25 °C, supporting TTL/CMOS-compatible logic-level control.
The device exhibits hFE ≥ 80 at IC = 5 mA, VCE = 5 V, and maintains VCE(sat) ≤ 150 mV at IC = 10 mA / IB = 0.5 mA, ensuring low-loss switching in 12 V automotive subsystems. Thermal resistance Rth(j-a) is 500 K/W on standard FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage under open-base condition; supports 12 V/24 V automotive rail switching with margin. |
| IO | 100 mA - Continuous output current rating; sufficient for driving LEDs, small relays, and logic inputs. |
| R1 | 47 kΩ (typ) - Integrated base-input pull-up resistor; eliminates external bias network and reduces BOM count by one component. |
| R2/R1 | 1.0 (typ) - Unity bias resistor ratio enabling stable saturation and predictable turn-off behavior across temperature. |
| VCE(sat) | ≤150 mV at IC=10 mA/IB=0.5 mA - Low saturation voltage minimizes power loss and self-heating during active switching. |
| hFE | ≥80 at VCE=5 V, IC=5 mA - Ensures reliable current gain for digital switch operation without marginal biasing. |
| fT | 230 MHz - Transition frequency of internal transistor; supports fast edge response in PWM and signal gating up to ~10 MHz. |
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, FR4-compatible footprint per Fig. 11–12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Connected internally to R1; accepts TTL/CMOS logic-level signals directly without series resistor. |
| 2 | Ground (emitter) | Emitter tied to system GND; provides return path for both input bias and output current. |
| 3 | Output (collector) | Switched high-side output node; sinks load current when driven high at Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 + R2 bias network | Eliminates 2 external resistors; reduces PCB area and assembly steps in digital interface circuits. |
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications including temperature cycling, HTRB, and ESD testing. |
| VI(on)/VI(off) window | 1.6–3.0 V on-threshold and 0.8–1.2 V off-threshold ensure robust noise immunity in 12 V vehicle environments. |
| Low VCE(sat) at rated IO | ≤150 mV enables <15 mW conduction loss at 100 mA, reducing thermal stress in sealed modules. |
| SOT23 footprint compatibility | Direct drop-in replacement for BC847-Q series and other SOT23 NPN transistors in existing layouts. |
Applications
| Automotive Body Control Module | Industrial PLC Input Stage |
|---|---|
Use Scenario: Switching 12 V LED indicators and solenoid drivers in door modules and lighting controllers. IC Role / Device Role: Digital output driver interfacing microcontroller GPIO to higher-current loads. Use Value: Eliminates discrete base-resistor network, reducing BOM cost by $0.012/unit and improving layout density. |
Use Scenario: Level-shifting and isolation of 24 V field sensor inputs into 3.3 V/5 V logic inputs. IC Role / Device Role: Input conditioning transistor providing galvanic separation and current limiting. Use Value: Built-in R1/R2 ensures consistent turn-on threshold across temperature, avoiding false triggers in factory-floor environments. |
| Automotive Infotainment Power Sequencing | Consumer Appliance Motor Control |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., USB-C port, display backlight) based on MCU command. IC Role / Device Role: Low-power enable switch controlling PMIC enable pins or LDO ON/OFF inputs. Use Value: VI(off) ≤ 1.2 V guarantees full cutoff even with leakage from adjacent noisy circuits in head unit PCBs. |
Use Scenario: Driving small DC motor direction logic or fan speed control signals in white goods. IC Role / Device Role: Logic-level translator and current amplifier for microcontroller outputs. Use Value: 100 mA IO and 50 V VCEO support direct connection to 24 V motor driver enable lines without level shifters. |
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 BJT without integrated resistors; requires external RB and RE for biasing. | Higher component count and layout sensitivity; less suitable for space-constrained automotive modules. | Select when fine-tuned biasing or adjustable hFE is required; not recommended for rapid prototyping or cost-sensitive production. |
| PDTA144ET-Q | PNP complement with identical R1/R2 values (47 kΩ each), same SOT23 package and AEC-Q101 qualification. | Used for high-side switching where load connects to VCC; shares footprint but opposite polarity logic. | Choose for complementary high-side control in dual-rail systems (e.g., half-bridge gate drive pre-biasing). |
Compared with BC847B-Q, PDTC144ET-QR reduces design time and test validation effort via built-in biasing; versus PDTA144ET-Q, it provides native low-side sink capability essential for ground-referenced loads in automotive ECUs.
Availability
PDTC144ET-QR is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, infotainment power sequencing, and consumer appliance motor control requiring stable component supply and AEC-Q101 compliance.
Supply support for PDTC144ET-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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
PDTC144ET-QR belongs to Nexperia's Automotive Resistor-Equipped Transistor (RET) product line, engineered specifically to replace legacy BJT+resistor combinations in cost- and space-sensitive automotive digital interfaces.
FAQ
Is PDTC144ET-QR pin-compatible with standard SOT23 NPN transistors like BC847?
Yes - PDTC144ET-QR uses the standard SOT23 pinout: Pin 1 = input (base), Pin 2 = emitter (GND), Pin 3 = collector (output). It fits the same PCB footprint as BC847-series devices, though its internal resistor network changes external circuit requirements.
What is the maximum ambient temperature for continuous operation at full 100 mA output current?
At IO = 100 mA and Ptot = 250 mW, junction temperature must stay ≤150 °C. With Rth(j-a) = 500 K/W, maximum allowable Tamb is 25 °C - derating is required above that; at 85 °C ambient, max IO drops to ~60 mA per Fig. 1 power curve.
Does PDTC144ET-QR support 3.3 V logic-level drive without additional components?
Yes - VI(on) ranges from 1.6 V to 3.0 V at 25 °C, making it fully compatible with 3.3 V CMOS outputs. VI(off) ≤ 1.2 V ensures reliable cutoff even with logic-high leakage or noise coupling in mixed-signal automotive boards.
How does the R2/R1 = 1.0 ratio affect switching behavior compared to asymmetric RETs?
A unity R2/R1 ratio stabilizes the base voltage during switching transitions, minimizing storage time and improving turn-off speed. It also yields predictable hFE-independent saturation, simplifying design verification versus RETs with R2/R1 ≠ 1.0.
PDTC144ET-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):
- 47 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 5mA, 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
PDTC144ET-QR FAQ
1.How can I place an order for PDTC144ET-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144ET-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 PDTC144ET-QR reliable?
The price and inventory of PDTC144ET-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144ET-QR is usually 5 days.
3.What payment methods are accepted for PDTC144ET-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144ET-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144ET-QR?
PDTC144ET-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144ET-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 PDTC144ET-QR?
For technical support, including PDTC144ET-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144ET-QR requirements.
6.How does Aetrix verify that PDTC144ET-QR is sourced from the original manufacturer or authorized distributors?
All PDTC144ET-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 PDTC144ET-QR meets industry standards.
7.What is the process for return or replacement of PDTC144ET-QR?
All PDTC144ET-QR units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144ET-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 PDTC144ET-QR part is unused and in its original packaging.
Return procedure for PDTC144ET-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144ET-QR Tags
-
MUN5211T1G
onsemi
-
DTC043ZEBTL
Rohm Semiconductor
-
DTC114EKAT146
Rohm Semiconductor
-
DDTD113ZC-7-F
Diodes Incorporated
-
DRDNB16W-7
Diodes Incorporated
-
PDTC114ET,215
Nexperia USA Inc.
-
PDTC143ZT,215
Nexperia USA Inc.
-
PDTC143ET,215
Nexperia USA Inc.
-
PDTC143XT,215
Nexperia USA Inc.
-
MMUN2211LT1G
onsemi
-
PDTC144ET,215
Nexperia USA Inc.
-
PDTC124ET,215
Nexperia USA Inc.
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
