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Nexperia USA Inc. PDTC124EU-QF
- Part No.:
- PDTC124EU-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC124EU-QF.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:7,208
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Product details
Overview
PDTC124EU-QF from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, featuring integrated 22 kΩ input bias resistor (R1) and 22 kΩ emitter feedback resistor (R2), 50 V VCEO, 100 mA IO, and optimized for digital switching in automotive control modules.
For engineers reviewing the PDTC124EU-QF datasheet, PDTC124EU-QF pinout, PDTC124EU-QF application, or PDTC124EU-QF equivalent, this device serves as a drop-in replacement for BC847-Q series transistors in load-switching and IC-input control circuits where built-in biasing reduces PCB area and assembly cost.
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-resistor drive logic-level interfacing without external bias networks. Its 1:1 R2/R1 ratio ensures predictable turn-on threshold and stable saturation behavior across temperature.
The device operates with VI(on) = 1.7 V (typ) at IC = 5 mA and VI(off) = 1.1 V (typ) at IC = 100 µA, supporting direct connection to 3.3 V and 5 V microcontroller GPIOs. Thermal resistance Rth(j-a) = 625 K/W on FR4 PCB enables reliable operation up to 125 °C ambient in automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; supports 24 V automotive supply rails with margin. |
| IO | 100 mA - Continuous output current capability; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 22 kΩ (typ) - Input bias resistor value; sets base current for defined switching thresholds with 3.3 V/5 V logic. |
| R2/R1 | 1.0 (typ) - Unity feedback ratio; ensures stable DC bias point and minimizes sensitivity to transistor hFE variation. |
| VCE(sat) | 150 mV (max) at IC = 10 mA, IB = 0.5 mA - Low saturation voltage reduces power loss and heat generation in switching mode. |
| fT | 230 MHz (typ) - Transition frequency of internal transistor; supports fast digital switching up to ~10 MHz edge rates. |
| Ptot | 200 mW at Tamb ≤ 25 °C - Total power dissipation limit; derates linearly above 25 °C per 625 K/W thermal resistance. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 3-terminal, 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, FR4-compatible footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Connected internally to R1; accepts logic-level drive signal directly from MCU or gate output. |
| 2 | Ground (emitter) | Emitter terminal tied to system GND; provides return path for load current and R2 feedback. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode, relay coil, or IC input pull-up). |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias network | Monolithic R1 = 22 kΩ + R2 = 22 kΩ eliminates need for two external resistors and associated layout space. |
| AEC-Q101 qualification | Qualified for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Low VI(on)/VI(off) separation | 1.7 V (on) vs. 1.1 V (off) enables clean logic-level discrimination with standard 3.3 V CMOS outputs. |
| Small-footprint SOT323 | 0.95 mm height and 2.0 mm × 1.25 mm footprint supports high-density routing in space-constrained ECUs. |
| Thermal robustness | Rated for 150 °C junction temperature and qualified for -65 °C to +150 °C ambient operation. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input Stage |
|---|---|
|
Use Scenario: Switching 12 V indicator LEDs and solenoid drivers in door module PCBs. IC Role / Device Role: Digital switch interface between microcontroller GPIO and 12 V loads. Use Value: Eliminates discrete resistor pair, reducing BOM count by 2 parts and saving 1.5 mm² board area per channel. |
Use Scenario: Level-shifting and noise-immune signal conditioning for 24 V dry-contact inputs. IC Role / Device Role: Input buffer isolating field wiring from PLC controller logic. Use Value: Built-in R1/R2 provides inherent hysteresis and ESD tolerance, improving immunity to contact bounce and line transients. |
| Consumer Appliance Control Board | Automotive HVAC Actuator Driver |
|
Use Scenario: Driving small DC fans and status LEDs in smart oven and washer mainboards. IC Role / Device Role: Low-power load switch controlled by 3.3 V SoC outputs. Use Value: VI(on) = 1.7 V allows direct drive from low-voltage MCUs without level shifters or additional biasing. |
Use Scenario: Controlling position-feedback potentiometer wipers and damper motor enable lines. IC Role / Device Role: Signal-level switch for analog sensor paths and motor control logic. Use Value: AEC-Q101 rating and 150 °C Tj support continuous operation in hot dashboard environments. |
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; requires external R1/R2 bias network (typically 10 kΩ/10 kΩ or 47 kΩ/47 kΩ). | Higher component count and layout complexity; less immune to trace parasitics in high-noise environments. | Select when design requires adjustable bias ratio or higher hFE (>200) than PDTC124EU-QF's typical 60–120 range. |
| PDTA124EU | PNP complement with identical R1/R2 values (22 kΩ/22 kΩ), same SOT323 package, and matching AEC-Q101 qualification. | Used for high-side switching or inverted logic configurations; not interchangeable in NPN circuit topologies. | Select for complementary high-side driver stages in H-bridge or dual-rail control circuits requiring matched RET characteristics. |
Compared with BC847B-Q, PDTC124EU-QF reduces bill-of-materials and layout area but trades off bias flexibility; compared with PDTA124EU, it provides NPN polarity essential for low-side switching while maintaining identical automotive qualification and thermal performance.
Availability
PDTC124EU-QF is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and consumer appliance control boards requiring stable component supply and AEC-Q101 compliance.
Supply support for PDTC124EU-QF 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.
PDTC124EU-QF belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) product line, designed specifically to simplify digital interface design in automotive and industrial control systems.
FAQ
What is the maximum operating temperature for PDTC124EU-QF?
The PDTC124EU-QF has a maximum junction temperature (Tj) of 150 °C and is rated for ambient temperatures from –65 °C to +150 °C. Its thermal resistance Rth(j-a) is 625 K/W on standard FR4 PCB, meaning it dissipates up to 200 mW at 25 °C ambient before reaching Tj = 150 °C.
Can PDTC124EU-QF replace BC847B in existing designs?
PDTC124EU-QF can replace BC847B in digital switching applications where the external bias network matches its internal R1/R2 = 22 kΩ/22 kΩ configuration. However, it is not a direct pin-for-pin substitute due to different pinout (input/base on Pin 1 vs. base on Pin 2 in BC847B) and integrated resistors - PCB layout revision is required.
Is PDTC124EU-QF suitable for 3.3 V microcontroller GPIO drive?
Yes. With VI(on) = 1.7 V (typ) and VI(off) = 1.1 V (typ), PDTC124EU-QF reliably switches on/off using standard 3.3 V CMOS outputs. Its 22 kΩ R1 draws only ~150 µA from the GPIO at 3.3 V, well within typical MCU drive capability.
Does PDTC124EU-QF have ESD protection?
The datasheet does not specify on-chip ESD protection diodes. However, its built-in R1 resistor (22 kΩ) inherently limits ESD current into the base node, and the device meets AEC-Q101 stress test requirements including human-body model (HBM) testing per JESD22-A114 - typical HBM rating is ≥2 kV.
PDTC124EU-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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):
- 22 kOhms
- Resistor - Emitter Base (R2):
- 22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 100nA
- Frequency - Transition:
- 230 MHz
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC124EU-QF FAQ
1.How can I place an order for PDTC124EU-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124EU-QF 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 PDTC124EU-QF reliable?
The price and inventory of PDTC124EU-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124EU-QF is usually 5 days.
3.What payment methods are accepted for PDTC124EU-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124EU-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124EU-QF?
PDTC124EU-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124EU-QF 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 PDTC124EU-QF?
For technical support, including PDTC124EU-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124EU-QF requirements.
6.How does Aetrix verify that PDTC124EU-QF is sourced from the original manufacturer or authorized distributors?
All PDTC124EU-QF 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 PDTC124EU-QF meets industry standards.
7.What is the process for return or replacement of PDTC124EU-QF?
All PDTC124EU-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124EU-QF, 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 PDTC124EU-QF part is unused and in its original packaging.
Return procedure for PDTC124EU-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC124EU-QF Tags
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