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Nexperia USA Inc. PDTC124ET-QR
- Part No.:
- PDTC124ET-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC124ET-QR.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,371
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Product details
Overview
PDTC124ET-QR from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT23 package, featuring integrated 22 kΩ base bias resistors (R1 = R2 = 22 kΩ), 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 PDTC124ET-QR datasheet, PDTC124ET-QR pinout, PDTC124ET-QR application, or PDTC124ET-QR equivalent, this part serves as a drop-in, cost-optimized replacement for BC847-series transistors in digital logic interface circuits where built-in biasing reduces PCB area and assembly steps.
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) = 1.7–2.5 V and VI(off) = 0.8–1.1 V at 25 °C, supporting TTL/CMOS-compatible logic-level control.
The device delivers hFE ≥ 60 at IC = 5 mA and VCE = 5 V, with VCE(sat) ≤ 100 mV at IC = 10 mA / IB = 0.5 mA, ensuring low-loss switching in 12 V automotive domains. Its thermal resistance Rth(j-a) = 500 K/W (FR4, single-sided) supports reliable operation up to Tj = 150 °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 (15.4–28.6 kΩ) - Integrated base pull-up resistor; eliminates need for external bias network. |
| R2/R1 | 1.0 (0.8–1.2) - Matched internal resistor ratio ensures stable saturation and predictable turn-on threshold. |
| VCE(sat) | ≤100 mV at IC=10 mA/IB=0.5 mA - Low saturation voltage minimizes power loss and self-heating during switching. |
| hFE | ≥60 at VCE=5 V, IC=5 mA - Guaranteed DC current gain ensures reliable digital on/off behavior across temperature. |
| fT | 230 MHz - Transition frequency of internal transistor; supports fast edge rates in digital signal paths. |
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) | Logic-level input terminal connected internally to R1; accepts 0–5 V digital signals directly. |
| 2 | Ground (emitter) | Emitter reference and return path; tied to system GND; forms common node for R2 and transistor emitter. |
| 3 | Output (collector) | Switched high-side output; connects to load (e.g., LED anode or relay coil); sinks current when active. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Monolithic R1 + R2 resistors eliminate 2 external components and reduce layout complexity. |
| AEC-Q101 qualification | Qualified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22. |
| Low VI(on)/VI(off) spread | VI(on) = 1.7–2.5 V and VI(off) = 0.8–1.1 V ensure robust noise immunity in 12 V vehicle environments. |
| Thermal derating support | Ptot = 250 mW at Tamb = 25 °C, with linear derating above 25 °C per Fig. 1 - enables predictable thermal design. |
Applications
| Automotive Body Control Module | Industrial PLC Input Interface |
|---|---|
Use Scenario: Switching 12 V indicator LEDs and solenoid drivers in door modules and lighting control units. IC Role / Device Role / Timing Role: Digital output switch interfacing MCU GPIO to higher-current loads. Use Value: Eliminates discrete base resistor placement and reduces BOM count by one per channel. |
Use Scenario: Level-shifting and isolating 24 V industrial sensor signals into 3.3 V/5 V microcontroller inputs. IC Role / Device Role / Timing Role: Input conditioning stage converting field-side voltage to logic-compatible levels. Use Value: Built-in resistor ratio ensures consistent VI(on)/VI(off) thresholds across temperature and unit variance. |
| Automotive Infotainment Power Sequencing | Consumer Appliance Microcontroller Interface |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., USB-C port VBUS) under MCU control in head units. IC Role / Device Role / Timing Role: Low-side enable switch with defined turn-on delay and clean edge response. Use Value: VCE(sat) ≤ 100 mV limits voltage drop and heat generation during sustained 100 mA conduction. |
Use Scenario: Driving optocoupler inputs or small relays in white-goods control boards (e.g., washing machine timers). IC Role / Device Role / Timing Role: General-purpose digital switch replacing BC847B in cost-sensitive consumer designs. Use Value: Identical SOT23 footprint and pinout allows direct substitution without PCB rework. |
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,115 | Discrete NPN BJT requiring external 10 kΩ–47 kΩ base resistor network; no integrated R2; hFE = 200–450 (wider spread). | Higher component count and layout sensitivity; less suitable for high-volume automated assembly. | Select when precise hFE tuning or analog amplification is required - not recommended for simple digital switching. |
| PDTA124ET-Q | PNP complement with identical R1/R2 values (22 kΩ), same AEC-Q101 qualification, but inverted polarity and VEBO = 10 V. | Used for high-side switching or complementary logic stages; requires inverted control signal logic. | Select only when sourcing current (e.g., driving cathodes or PMOS gates); not interchangeable in NPN circuit positions. |
Compared with BC847B and PDTA124ET-Q, PDTC124ET-QR provides guaranteed resistor matching, lower assembly cost, and automotive qualification out-of-the-box - making it optimal for volume digital switching where predictability and supply chain consistency matter most.
Availability
PDTC124ET-QR 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 PDTC124ET-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-enhancing components - delivering high-performance, reliable, and scalable solutions for automotive, industrial, and consumer markets.
PDTC124ET-QR belongs to Nexperia's Automotive Logic Transistor family, engineered specifically to replace discrete BJT + resistor combinations in digital interface and load-switching applications while meeting stringent automotive reliability standards.
FAQ
Is PDTC124ET-QR pin-compatible with standard SOT23 NPN transistors like BC847?
Yes - PDTC124ET-QR uses the standard SOT23 pinout (1 = base/input, 2 = emitter/GND, 3 = collector/output), matching BC847B and similar devices. However, its internal resistor network means external base resistors must be omitted to avoid double-biasing and unintended operation.
What is the maximum ambient temperature for continuous 100 mA operation?
At 100 mA output current, PDTC124ET-QR dissipates up to ~10 mW in saturation (VCE(sat) × IC). With Ptot = 250 mW at 25 °C and Rth(j-a) = 500 K/W, junction temperature remains below 150 °C up to Tamb ≈ 125 °C - verified per Fig. 1 derating curve.
Does PDTC124ET-QR support 3.3 V logic-level drive?
Yes - VI(on) ranges from 1.7 V (min) to 2.5 V (max) at 25 °C, ensuring reliable turn-on with 3.3 V CMOS outputs. VI(off) stays below 1.1 V, providing >2.2 V noise margin against typical 3.3 V logic low states.
Can PDTC124ET-QR be used in linear amplifier configurations?
No - this device is optimized for digital switching, not analog amplification. Its hFE is specified only at IC = 5 mA and VCE = 5 V, and the integrated resistors prevent independent bias point adjustment required for stable linear operation.
PDTC124ET-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):
- 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:
- 250 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTC124ET-QR FAQ
1.How can I place an order for PDTC124ET-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124ET-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 PDTC124ET-QR reliable?
The price and inventory of PDTC124ET-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124ET-QR is usually 5 days.
3.What payment methods are accepted for PDTC124ET-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124ET-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124ET-QR?
PDTC124ET-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124ET-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 PDTC124ET-QR?
For technical support, including PDTC124ET-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124ET-QR requirements.
6.How does Aetrix verify that PDTC124ET-QR is sourced from the original manufacturer or authorized distributors?
All PDTC124ET-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 PDTC124ET-QR meets industry standards.
7.What is the process for return or replacement of PDTC124ET-QR?
All PDTC124ET-QR units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124ET-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 PDTC124ET-QR part is unused and in its original packaging.
Return procedure for PDTC124ET-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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