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Nexperia USA Inc. PDTC124EU-QX
- Part No.:
- PDTC124EU-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC124EU-QX.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:7,682
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Product details
Overview
PDTC124EU-QX from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, featuring integrated R1 = 22 kΩ and R2 = 22 kΩ bias resistors. It functions as a single-chip digital switch for IC input control and low-power load switching in automotive and industrial systems, eliminating external base resistors.
For engineers reviewing the PDTC124EU-QX datasheet, PDTC124EU-QX pinout, PDTC124EU-QX application, or PDTC124EU-QX equivalent, key selection criteria include its AEC-Q101 qualification, 150 mV VCEsat at 10 mA/0.5 mA drive, 230 MHz fT, and SC-70 footprint compatibility with space-constrained PCB layouts.
Technical Context
This RET integrates an NPN transistor with two precision-matched on-die resistors-R1 connected between input and base, R2 between base and emitter-enabling direct logic-level drive without external biasing components. Its internal topology supports robust saturation switching with VI(on) = 1.7–2.5 V and VI(off) = 0.8–1.1 V across temperature.
The device operates within −65 °C to +150 °C ambient range, delivers hFE ≥ 60 at 5 mA/5 V, and maintains 50 V V(BR)CEO and V(BR)CBO ratings. Thermal resistance Rth(j-a) is 625 K/W on standard FR4 PCB, supporting reliable operation up to 200 mW total power dissipation at 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with margin. |
| IO | 100 mA - Continuous output current rating; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 22 kΩ (typ) - Input bias resistor value; sets base current for predictable turn-on with 3.3 V or 5 V logic. |
| VCE(sat) | 150 mV (max) at IC=10 mA, IB=0.5 mA - Low saturation voltage minimizes power loss and heat generation. |
| fT | 230 MHz (typ) - Transition frequency of internal transistor; supports fast digital switching up to ~10 MHz. |
| hFE | ≥60 at VCE=5 V, IC=5 mA - DC current gain ensures stable switching behavior under defined bias conditions. |
| Ptot | 200 mW at Tamb ≤ 25 °C - Power dissipation limit on standard FR4 PCB; derates linearly above 25 °C. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 3-pin, 1.3 mm pitch, 2.0 mm × 1.25 mm × 0.95 mm body size, optimized for high-density automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Logic-level signal entry point; internally connected to R1; accepts 1.7–2.5 V for guaranteed turn-on. |
| 2 | Ground (emitter) | Emitter terminal tied to system ground; serves as common reference for both R2 and transistor emitter. |
| 3 | Output (collector) | Switched output node; connects to load (e.g., LED anode or IC input); sinks up to 100 mA when active. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors (R1 = R2 = 22 kΩ) | Eliminates need for two external resistors, reducing BOM count and PCB area by ≥2 components per switch node. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
| Low VCE(sat) (150 mV max) | Reduces conduction loss to <1.5 mW at 10 mA load, enabling thermally efficient operation in sealed enclosures. |
| SC-70 footprint compatibility | Matches industry-standard 0805-sized land pattern; supports automated placement and reflow soldering per IPC-7351B. |
| Wide operating temperature | Functional from −65 °C to +150 °C junction temperature, supporting under-hood and engine-control module deployment. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input Stage |
|---|---|
|
Use Scenario: Switching 12 V indicator LEDs and solenoid drivers in door modules and lighting controllers. IC Role / Device Role / Timing Role: NPN RET acting as level-shifted, current-limited load switch driven directly by 3.3 V microcontroller GPIO. Use Value: Replaces BC847 + two resistors with single SC-70 device, cutting assembly cost and improving thermal stability over temperature. |
Use Scenario: Conditioning 24 V field signals into safe 5 V logic levels for FPGA or ARM-based controller inputs. IC Role / Device Role / Timing Role: Digital interface buffer providing galvanic isolation via optocoupler-compatible current sinking. Use Value: Enables direct connection to 24 V sensors without external voltage dividers; VI(off) ≤ 1.1 V guarantees clean logic-low detection. |
| Consumer Appliance Motor Driver Enable | Medical Diagnostic Equipment Signal Gating |
|
Use Scenario: Enabling/disabling small DC brush motors in smart home HVAC actuators and coffee makers. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling motor driver IC's EN pin or gate drive path. Use Value: Delivers 100 mA sink capability with <150 mV drop, ensuring full logic-high assertion at downstream driver inputs. |
Use Scenario: Gating analog sensor excitation signals in portable ultrasound or blood glucose meters. IC Role / Device Role / Timing Role: Precision-controlled current sink for timed activation of piezoelectric transducers or photodiode bias networks. Use Value: Matched R1/R2 ratio (0.8–1.2) ensures consistent turn-on threshold across production lots, critical for calibrated signal timing. |
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 22 kΩ base resistor; no integrated R2; hFE = 200–450 (wider spread). | Lacks built-in bias network; increases BOM count and layout complexity; less suitable for high-volume automated assembly. | Select when tighter hFE control or higher gain is required, and board space allows discrete resistor placement. |
| PDTA124EU | PNP complement with identical R1/R2 values (22 kΩ), same SOT323 package, but opposite polarity and −50 V VECO. | Used for high-side switching or complementary logic stages; not interchangeable without circuit redesign. | Choose for PNP-side matching in push-pull or dual-rail digital interfaces where polarity inversion is acceptable. |
Compared with BC847B-Q, PDTC124EU-QX reduces component count and improves repeatability; versus PDTA124EU, it provides NPN functionality essential for low-side switching and sink-driven logic interfaces.
Availability
PDTC124EU-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and medical diagnostic equipment requiring stable component supply and AEC-Q101 compliance.
Supply support for PDTC124EU-QX 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-QX belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT + resistor combinations in cost-sensitive, space-constrained automotive and industrial digital switching applications.
FAQ
Is PDTC124EU-QX pin-compatible with BC847 series transistors?
No. PDTC124EU-QX uses a 3-pin SOT323 configuration with dedicated Input (pin 1), Ground (pin 2), and Output (pin 3) terminals, whereas BC847 variants have Base/Collector/Emitter pinout. Direct replacement requires PCB layout revision and logic-level adaptation due to integrated biasing.
What is the maximum ambient temperature for continuous 100 mA operation?
At 100 mA output current, power dissipation reaches ~15 mW (100 mA × 150 mV). With Rth(j-a) = 625 K/W, junction rise is ~9.4 °C - well below 150 °C limit. Full 100 mA operation is supported up to +125 °C ambient on standard FR4, per derating curve in Figure 1.
Does PDTC124EU-QX support 1.8 V logic drive?
No. VI(on) minimum is 1.7 V at 25 °C but drops to 1.1 V at −40 °C (Fig. 5); at 1.8 V, turn-on is marginal and not guaranteed across temperature and process variation. Use ≥2.5 V logic for robust operation per datasheet test conditions.
Can PDTC124EU-QX be used in linear amplification mode?
No. This device is optimized as a saturated switch, not a linear amplifier. Its hFE is specified only at VCE = 5 V and lacks linearity characterization; using it in active region risks inconsistent gain, thermal instability, and undefined bias point due to internal resistor network.
PDTC124EU-QX 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-QX FAQ
1.How can I place an order for PDTC124EU-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124EU-QX 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-QX reliable?
The price and inventory of PDTC124EU-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124EU-QX is usually 5 days.
3.What payment methods are accepted for PDTC124EU-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124EU-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124EU-QX?
PDTC124EU-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124EU-QX 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-QX?
For technical support, including PDTC124EU-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124EU-QX requirements.
6.How does Aetrix verify that PDTC124EU-QX is sourced from the original manufacturer or authorized distributors?
All PDTC124EU-QX 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-QX meets industry standards.
7.What is the process for return or replacement of PDTC124EU-QX?
All PDTC124EU-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124EU-QX, 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-QX part is unused and in its original packaging.
Return procedure for PDTC124EU-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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