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Nexperia USA Inc. PDTA124ET-QR
- Part No.:
- PDTA124ET-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTA124ET-QR.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,675
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Product details
Overview
PDTA124ET-QR from Nexperia is a PNP resistor-equipped transistor (RET) in SOT23 package, designed for digital switching in automotive and industrial systems. It features 50 V VCEO, −100 mA output current, built-in R1 = 22 kΩ and R2 = 22 kΩ bias resistors, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the PDTA124ET-QR datasheet, PDTA124ET-QR pinout, PDTA124ET-QR application, or PDTA124ET-QR equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, automotive-grade reliability context, and direct alternatives to BC847-based designs.
Technical Context
This RET integrates a PNP bipolar transistor with two precision silicon-based bias resistors (R1 = 22 kΩ ±30%, R2/R1 = 1.0 ±20%) to enable single-resistor drive logic-level interfacing. It operates with −50 V collector-base breakdown voltage and supports −100 mA continuous output at Tamb ≤ 25 °C.
The device exhibits −150 mV VCEsat at IC = −10 mA / IB = −0.5 mA, −1.7 V typical VI(on) at IC = −5 mA, and 60 minimum hFE at VCE = −5 V / IC = −5 mA - confirming robust saturation and predictable turn-on behavior in digital control paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V: Maximum safe collector-emitter voltage with open base; enables use in 24 V automotive supply rails with margin. |
| IO | −100 mA: Continuous DC output current rating; sufficient for driving LED indicators, small relays, or logic inputs. |
| R1 | 22 kΩ (15.4–28.6 kΩ): Input bias resistor value; sets base current for predictable switching without external components. |
| R2/R1 | 1.0 (0.8–1.2): Matched internal resistor ratio; ensures stable off-state leakage and consistent turn-off threshold. |
| VCEsat | −150 mV max at IC = −10 mA / IB = −0.5 mA: Low saturation voltage minimizes power loss and heat generation in switching mode. |
| AEC-Q101 | Qualified: Meets stress-test requirements for discrete semiconductors in automotive environments including temperature cycling and HTRB. |
| Ptot | 250 mW at Tamb = 25 °C: Total power dissipation limit on FR4 PCB; derates linearly above 25 °C per Fig. 1. |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pitch), optimized for automated placement and reflow soldering per IPC-7351 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1 and R2 network; accepts TTL/CMOS logic-level signals directly without external pull-up/down. |
| 2 | Ground (emitter) | Emitter terminal tied to system ground; serves as common reference for input and output paths in high-side switch configurations. |
| 3 | Output (collector) | Switched output node; sinks current to ground when active; rated for −50 V blocking and −100 mA conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | R1 = 22 kΩ and R2 = 22 kΩ monolithically embedded; eliminates two external resistors and reduces BOM count by 2 parts. |
| Automotive qualification | AEC-Q101 qualified per stress test standard; supports deployment in engine control modules, body electronics, and ADAS sensors. |
| Digital switching optimization | −1.7 V typical VI(on) and −150 mV VCEsat; ensures fast, low-loss transitions between logic HIGH/LOW states. |
| SOT23 footprint compatibility | Standard 3-pin SOT23 outline with 1.9 mm pitch; allows drop-in replacement of legacy transistors like BC847 without layout changes. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Output |
|---|---|
|
Use Scenario: Driving LED status indicators and small solenoid valves in door module ECUs. IC Role / Device Role / Timing Role: High-side switch controlling 12 V loads with logic-level enable from microcontroller GPIO. Use Value: Eliminates need for discrete base resistor and pull-down; reduces PCB area by 2.5 mm² per channel and improves thermal margin vs. BC847 + RB. |
Use Scenario: Isolating microcontroller outputs from 24 V field devices in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Logic-level compatible PNP switch enabling sink-type digital output with <1 µs turn-off delay. Use Value: Achieves −100 mA load current capability while maintaining −1.1 V VI(off) to prevent false triggering in noisy factory environments. |
| Consumer Appliance Power Sequencing | Automotive HVAC Blower Control |
|
Use Scenario: Enabling auxiliary power rails during startup sequence in smart washing machines. IC Role / Device Role / Timing Role: Pre-regulator enable switch activated by MCU after brown-out detection. Use Value: −50 V VCEO withstands transient spikes up to ISO 7637-2 Pulse 1; R1/R2 matching ensures reliable turn-off during reset events. |
Use Scenario: Controlling fan speed feedback circuitry in climate control units. IC Role / Device Role / Timing Role: Level-shifting interface between 3.3 V MCU and 12 V tachometer signal conditioning stage. Use Value: −100 nA ICEO at 150 °C junction temperature guarantees no false wake-up during extended under-hood operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP digital switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC124ET-Q | NPN complement with identical R1/R2 values and SOT23 package; VCEO = +50 V, IO = +100 mA. | Requires inverted logic drive and low-side load placement; unsuitable for high-side switching where emitter must connect to supply rail. | Select when load is grounded and controller output is active-low; retains same board footprint and bias network simplicity. |
| BC847B,115 | Discrete PNP BJT without integrated resistors; requires external 22 kΩ base resistor; hFE = 200–450 (vs. 60 min for PDTA124ET-QR). | Higher gain but demands additional passive component and layout space; lacks AEC-Q101 qualification and guaranteed R1/R2 matching. | Choose only for non-automotive cost-sensitive designs where external resistor placement is acceptable and qualification is not required. |
Compared with PDTC124ET-Q, PDTA124ET-QR provides native high-side switching capability and automotive qualification, while BC847B offers higher gain at the cost of BOM complexity and unqualified reliability - making PDTA124ET-QR optimal for AEC-compliant digital load control.
Availability
PDTA124ET-QR is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC outputs, and consumer appliance power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PDTA124ET-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 essential semiconductors for automotive, industrial, mobile, and computing markets.
PDTA124ET-QR belongs to Nexperia's Automotive-Qualified Resistor-Equipped Transistor (RET) product line, engineered to replace discrete BJT + resistor combinations in digital logic interfacing and load switching applications.
FAQ
Is PDTA124ET-QR pin-compatible with BC847 series transistors?
No - PDTA124ET-QR uses SOT23 pinning where Pin 1 = Input (base), Pin 2 = GND (emitter), Pin 3 = Output (collector); BC847 has Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. Direct replacement requires PCB layout revision to match terminal assignments and functional roles.
What is the maximum operating temperature for continuous operation?
The device supports continuous operation up to Tamb = 150 °C, with junction temperature limited to 150 °C. At ambient temperatures above 25 °C, total power dissipation must be derated linearly per Fig. 1 - e.g., 125 mW at 75 °C ambient on standard FR4 PCB.
Does PDTA124ET-QR support 3.3 V logic-level drive?
Yes - VI(on) is −2.5 V to −1.7 V (typical −1.7 V) at IC = −5 mA, ensuring reliable turn-on with 3.3 V CMOS outputs driving Pin 1 through a pull-up to 3.3 V or direct connection to an active-low GPIO.
How does the R2/R1 ratio affect switching performance?
An R2/R1 ratio of 1.0 ±0.2 ensures matched feedback to the base, stabilizing the off-state leakage current (ICEO ≤ −5 µA at 150 °C) and minimizing sensitivity to temperature-induced hFE variation - critical for fail-safe behavior in automotive safety-related circuits.
PDTA124ET-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:
- PNP - 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 @ 10mA
- Current - Collector Cutoff (Max):
- 100nA
- Frequency - Transition:
- 180 MHz
- Power - Max:
- 250 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23
PDTA124ET-QR FAQ
1.How can I place an order for PDTA124ET-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA124ET-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 PDTA124ET-QR reliable?
The price and inventory of PDTA124ET-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA124ET-QR is usually 5 days.
3.What payment methods are accepted for PDTA124ET-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA124ET-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTA124ET-QR?
PDTA124ET-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA124ET-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 PDTA124ET-QR?
For technical support, including PDTA124ET-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA124ET-QR requirements.
6.How does Aetrix verify that PDTA124ET-QR is sourced from the original manufacturer or authorized distributors?
All PDTA124ET-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 PDTA124ET-QR meets industry standards.
7.What is the process for return or replacement of PDTA124ET-QR?
All PDTA124ET-QR units undergo pre-shipment inspection (PSI). If there is an issue with PDTA124ET-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 PDTA124ET-QR part is unused and in its original packaging.
Return procedure for PDTA124ET-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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