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Nexperia USA Inc. PDTC123JU-QX
- Part No.:
- PDTC123JU-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC123JU-QX.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:4,259
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Product details
Overview
PDTC123JU-QX from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, designed for automotive digital switching. It features built-in bias resistors R1 = 2.2 kΩ and R2 = 47 kΩ, supports 50 V VCEO, delivers 100 mA output current, and operates across –65 °C to +150 °C ambient range - used for controlling IC inputs and load switching in engine control modules.
For engineers reviewing the PDTC123JU-QX datasheet, PDTC123JU-QX pinout, PDTC123JU-QX application, or PDTC123JU-QX equivalent, this part serves as a drop-in replacement for BC847-Q series in digital logic interface circuits where reduced BOM count, simplified base drive, and automotive-grade reliability are required.
Technical Context
This RET integrates a monolithic NPN transistor with two precision on-die bias resistors: R1 connects input (base) to VIN, R2 shunts base to emitter. The R2/R1 ratio of 21 typ enables stable saturation at IC = 5 mA with IB = 0.25 mA, yielding VCE(sat) ≤ 100 mV.
It functions as a single-stage digital switch with defined VI(on)/VI(off) thresholds (0.75 V typ / 0.6 V typ), eliminating external base resistors. Its 230 MHz fT and 2.5 pF Cc support fast edge transitions in 10–100 kHz control signals typical in body electronics and power management subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - maximum collector-emitter voltage before breakdown; ensures safe operation in 24 V automotive systems with transients up to ISO 7637-2 Pulse 5a. |
| IO | 100 mA - continuous output current capability; sufficient to drive LED indicators, small relays, or logic-level inputs without external amplification. |
| R1 | 2.2 kΩ ±30% - input bias resistor enabling direct TTL/CMOS logic-level drive without external pull-up or current-limiting components. |
| R2/R1 | 21 typ (17–26) - internal feedback ratio ensuring predictable turn-off behavior and immunity to leakage-induced false triggering. |
| VCE(sat) | ≤100 mV at IC = 5 mA, IB = 0.25 mA - low saturation voltage minimizes power loss and self-heating in high-duty-cycle switching applications. |
| fT | 230 MHz - transition frequency of the embedded transistor; supports clean signal integrity in PWM dimming and digital enable/disable timing. |
| hFE | 100 min at VCE = 5 V, IC = 10 mA - guaranteed DC current gain ensures reliable saturation under worst-case temperature and process variation. |
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 height. Optimized for reflow soldering per IPC-7095 guidelines with standard footprint dimensions (2.65 mm × 2.35 mm land pattern).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Direct connection point for digital control signal; internally connected to R1 and R2 node - no external base resistor needed. |
| 2 | GND (emitter) | Emitter terminal tied to system ground; provides return path for both input bias current and output load current. |
| 3 | Output (collector) | Switched high-side output node; sinks load current to GND when active - configured for low-side switching topology. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias network | R1 = 2.2 kΩ and R2 = 47 kΩ integrated on-die - eliminates two external resistors and associated placement/assembly steps. |
| AEC-Q101 qualification | Qualified for automotive applications per stress test requirements - validated for temperature cycling, HTRB, and ESD robustness. |
| Low VCE(sat) | ≤100 mV at rated IC - reduces conduction loss to <1 mW at 10 mA, critical for thermally constrained PCB layouts. |
| Wide operating temperature | –65 °C to +150 °C ambient - supports under-hood deployment in engine control units and transmission control modules. |
| Small-footprint packaging | SOT323 (SC-70) - saves >60% board area vs. SOT23 while maintaining compatibility with standard pick-and-place equipment. |
Applications
| Engine Control Unit (ECU) Input Conditioning | Automotive LED Indicator Driver |
|---|---|
|
Use Scenario: Level-shifting and noise filtering of crankshaft position sensor signals before MCU input. IC Role / Device Role / Timing Role: Digital buffer and transient suppressor - converts open-collector sensor output to clean CMOS-compatible logic levels. Use Value: Eliminates need for discrete pull-up + RC filter; VI(on)/VI(off) thresholds ensure reliable detection across battery voltage swings (9–16 V). |
Use Scenario: Driving dashboard warning LEDs in response to CAN bus fault messages. IC Role / Device Role / Timing Role: Low-side switch - interfaces microcontroller GPIO to common-anode LED strings. Use Value: 100 mA rating supports dual-color LEDs; low VCE(sat) prevents thermal derating at ambient >85 °C. |
| Body Control Module (BCM) Relay Interface | Industrial Sensor Signal Switching |
|
Use Scenario: Enabling 12 V relay coils in door lock actuation circuits. IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relay drivers - provides galvanic isolation via optocoupler-compatible input stage. Use Value: Built-in R1/R2 ensures consistent turn-on delay <1 µs and eliminates risk of latch-up during load dump events. |
Use Scenario: Multiplexing analog sensor outputs (e.g., temperature, pressure) into shared ADC channels. IC Role / Device Role / Timing Role: Analog switch controller - gates sensor excitation voltage using digital enable signals. Use Value: 50 V VCEO withstands industrial supply rail transients; low Cc (2.5 pF) prevents crosstalk between adjacent channels. |
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 RBE. | Higher component count and layout sensitivity; less suitable for space-constrained automotive modules. | Select when fine-tuned biasing or higher hFE (>200) is required, and board area is not constrained. |
| PDTA123JU | PNP complement with identical R1/R2 values and SOT323 package; VCEO = –50 V, IO = –100 mA. | Used for high-side switching or complementary logic; not interchangeable in low-side configurations. | Select for push-pull driver stages or inverted logic interfaces where sourcing current is required. |
Compared with BC847B-Q, PDTC123JU-QX reduces bill-of-materials by two resistors and improves production yield; compared with PDTA123JU, it enables low-side switching topologies essential for ground-referenced loads in automotive ECUs.
Availability
PDTC123JU-QX is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and industrial sensor interface circuits requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for PDTC123JU-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 technologies.
PDTC123JU-QX belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) family, engineered specifically for cost-sensitive, space-constrained digital switching in automotive body electronics and powertrain subsystems.
FAQ
Is PDTC123JU-QX suitable for 24 V commercial vehicle applications?
Yes. Its 50 V VCEO rating exceeds ISO 7637-2 Pulse 5a requirements (up to 47 V), and its –65 °C to +150 °C operating range covers under-hood environments in trucks and buses. AEC-Q101 qualification confirms robustness against thermal cycling and humidity exposure typical in heavy-duty applications.
Can PDTC123JU-QX replace BC847B in existing designs without layout changes?
No. While functionally similar, PDTC123JU-QX has different pinout (input/base on Pin 1, emitter/GND on Pin 2, collector/output on Pin 3) versus BC847B (emitter on Pin 1, base on Pin 2, collector on Pin 3). Layout revision is required to match SOT323 pin mapping and avoid misconnection.
What is the maximum allowable duty cycle at 100 mA output current?
At 100 mA continuous IO, the device dissipates up to 10 mW (assuming VCE(sat) = 100 mV). With Ptot = 200 mW at Tamb = 25 °C and Rth(j-a) = 625 K/W, thermal margin allows 100% duty cycle only below ~75 °C ambient. Above that, derating per Figure 1 applies - e.g., 50% duty cycle permitted at 125 °C ambient.
Does PDTC123JU-QX support PWM frequencies above 10 kHz?
Yes. With fT = 230 MHz and Cc = 2.5 pF, the device supports clean switching up to at least 100 kHz. Measured VCE(sat) and rise/fall times remain stable across –40 °C to +100 °C, making it suitable for PWM-controlled LED dimming and solenoid actuation in automotive lighting and HVAC systems.
PDTC123JU-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):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- 230 MHz
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC123JU-QX FAQ
1.How can I place an order for PDTC123JU-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC123JU-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 PDTC123JU-QX reliable?
The price and inventory of PDTC123JU-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC123JU-QX is usually 5 days.
3.What payment methods are accepted for PDTC123JU-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC123JU-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC123JU-QX?
PDTC123JU-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC123JU-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 PDTC123JU-QX?
For technical support, including PDTC123JU-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC123JU-QX requirements.
6.How does Aetrix verify that PDTC123JU-QX is sourced from the original manufacturer or authorized distributors?
All PDTC123JU-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 PDTC123JU-QX meets industry standards.
7.What is the process for return or replacement of PDTC123JU-QX?
All PDTC123JU-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDTC123JU-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 PDTC123JU-QX part is unused and in its original packaging.
Return procedure for PDTC123JU-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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