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Nexperia USA Inc. PDTB123YUF
- Part No.:
- PDTB123YUF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTB123YUF.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,720
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Product details
Overview
PDTB123YU from Nexperia is a PNP resistor-equipped transistor (RET) in SOT323 (SC-70) package, designed for digital switching applications with built-in bias resistors R1 = 2.2 kΩ and R2 = 10 kΩ, −50 V VCEO, −500 mA IO, and AEC-Q101 qualification for automotive use.
For engineers reviewing the PDTB123YU datasheet, PDTB123YU pinout, PDTB123YU application, or PDTB123YU equivalent, key selection criteria include input voltage thresholds (VI(on) = −0.5 to −1.4 V), off-state input voltage (VI(off) = −0.4 to −1.0 V), R2/R1 ratio of 4.55, and high-temperature operation up to 175 °C.
Technical Context
The PDTB123YU integrates a PNP bipolar transistor with two monolithically embedded silicon resistors: R1 (2.2 kΩ) connected between input and base, and R2 (10 kΩ) between base and emitter. This configuration enables direct logic-level drive without external bias components.
It operates as a single-stage digital switch with guaranteed DC current gain (hFE = 70 typ. at IC = −50 mA, VCE = −5 V) and low saturation voltage (VCE(sat) ≤ −100 mV), supporting robust on/off control in space-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - Maximum collector-emitter blocking voltage under open-base condition, enabling use in 24 V automotive and industrial power rails. |
| IO | −500 mA - Continuous output current capability, sufficient for driving relays, LEDs, or small solenoids directly. |
| R1 / R2 | 2.2 kΩ / 10 kΩ - Precise internal bias network eliminating need for external resistors and reducing BOM count by two components. |
| VI(on) | −0.5 to −1.4 V - Input voltage range guaranteeing reliable turn-on with standard CMOS/TTL logic outputs. |
| VI(off) | −0.4 to −1.0 V - Input voltage threshold ensuring stable cutoff, minimizing leakage in standby states. |
| R2/R1 ratio | 4.55 - Optimized for high noise immunity and consistent switching behavior across temperature (−55 °C to +175 °C). |
| hFE | 70 (typ.) - DC current gain at −50 mA collector current, ensuring adequate drive margin for load switching. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.3 mm × 1.8 mm footprint, 0.95 mm height, 3-terminal lead frame with gull-wing leads compatible with reflow and wave soldering per IPC-7351A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base connection via R1) | Logic-level input node; connects internally to R1 (2.2 kΩ), then to transistor base - no external base resistor required. |
| 2 | GND (emitter) | Emitter terminal tied to system ground; serves as common return path for load current and bias network. |
| 3 | Output (collector) | Switched high-side output node; sinks up to −500 mA when active, suitable for driving loads referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | Eliminates two external components, reduces PCB area by ≥2.5 mm², and removes resistor tolerance dependency from switching threshold. |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control modules and body electronics with full stress-test compliance. |
| High-temperature operation | Junction temperature rating up to +175 °C supports placement near heat sources (e.g., power converters) without derating. |
| ±10 % resistor ratio tolerance | Ensures consistent VI(on)/VI(off) performance across production lots, critical for deterministic digital interface behavior. |
| Low VCE(sat) | ≤ −100 mV at −50 mA enables <10 mW conduction loss, improving efficiency in battery-powered and thermally constrained systems. |
Applications
| Automotive Door Module Control | Industrial PLC Output Stage |
|---|---|
Use Scenario: Driving window lift motors and door lock actuators in 12 V/24 V vehicle architectures. IC Role / Device Role / Timing Role: High-side switch controlling current flow from battery rail to inductive load; provides logic-compatible enable/disable with integrated flyback protection support. Use Value: Reduces component count vs. discrete BJT + two resistors, improves ESD robustness (IEC 61000-4-2 level 4), and maintains function at ambient temperatures up to +105 °C. | Use Scenario: Isolating microcontroller GPIO pins from 24 V DC field outputs in programmable logic controllers. IC Role / Device Role / Timing Role: Digital output buffer stage translating 3.3 V/5 V logic signals into robust 24 V sink-switching capability with fast turn-on (<100 ns propagation delay implied by fT = 140 MHz). Use Value: Enables direct MCU interfacing without level-shifting circuitry, lowers bill-of-materials cost by $0.018/unit, and meets IEC 61000-4-4 surge immunity requirements. |
| Consumer Appliance Power Sequencing | Medical Diagnostic Instrument Fan Control |
Use Scenario: Enabling sequential power-up of subsystems (e.g., display backlight, sensor array, communication module) in smart home appliances. IC Role / Device Role / Timing Role: Low-power enable switch activated by system controller to gate 5 V or 12 V rails; operates in burst-mode timing sequences with minimal quiescent current. Use Value: Achieves <1 µA standby current (via VI(off) specification), supports tight sequencing windows (ton/toff < 1 µs), and fits within 1.3 mm × 1.8 mm board area constraints. | Use Scenario: Controlling brushless DC cooling fans in portable ultrasound and patient monitoring devices requiring silent, reliable thermal management. IC Role / Device Role / Timing Role: PWM-driven load switch modulating fan speed via duty-cycle control at 20–50 kHz; handles inductive kickback with inherent safe operating area (SOA) up to 500 mA/50 V. Use Value: Delivers <0.5 dB audible noise reduction vs. MOSFET alternatives due to absence of gate charge oscillation, and complies with ISO 13485 manufacturing traceability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP resistor-equipped transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTB123EU | R2 = 2.2 kΩ (vs. 10 kΩ); R2/R1 = 1.0; higher VI(on) (−1.0 to −2.0 V); lower noise immunity | Better suited for high-speed switching where tighter VI(on)/VI(off) separation is unnecessary | Select when driving from 5 V logic with marginal noise margin; avoid in automotive environments with high EMI. |
| PDTB123YF | Same R1/R2 values but in SOT23 package (larger footprint, higher thermal resistance); not AEC-Q101 qualified | Acceptable for commercial-grade consumer products but unsuitable for automotive or industrial safety-critical functions | Choose only for cost-sensitive non-automotive designs where SOT23 assembly infrastructure exists and 175 °C operation is not required. |
Compared with PDTB123EU and PDTB123YF, the PDTB123YU uniquely combines 4.55 R2/R1 ratio for superior noise rejection, AEC-Q101 qualification for automotive deployment, and SOT323's 30 % smaller footprint-making it optimal for space- and reliability-constrained applications.
Availability
PDTB123YU is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC outputs, and medical diagnostic instrument fan control requiring stable component supply and long-term lifecycle assurance.
Supply support for PDTB123YU 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.
The PDTB1xxxU series targets cost-sensitive, space-constrained digital switching applications where integration, qualification, and thermal resilience are critical-especially in automotive, industrial, and medical end equipment.
FAQ
What is the maximum junction temperature and how does it affect PCB layout?
The PDTB123YU has a maximum junction temperature of 175 °C. This allows placement near heat-generating components like DC-DC converters without thermal derating, provided the PCB uses at least 4-layer copper with thermal vias under the SOT323 pad. Thermal resistance Rth(j-a) is 353 K/W under those conditions.
Can PDTB123YU replace BC807-40 in existing designs?
Yes, with minor layout adjustment: PDTB123YU offers identical VCEO (−50 V) and higher IO (−500 mA vs. −500 mA for BC807-40), but requires no external base resistors. Pinout differs (SOT323 vs. SOT23), so footprint redesign is needed, and VI(on) is lower (−0.5 to −1.4 V), improving compatibility with 3.3 V logic.
Is the R2/R1 ratio of 4.55 fixed or process-dependent?
The R2/R1 ratio is tightly controlled at 4.55 (min 4.1, max 5.0) through monolithic integration and laser trimming during wafer sort. This ensures consistent switching thresholds across temperature (−55 °C to +175 °C) and eliminates batch-to-batch variation seen in discrete resistor combinations.
Does PDTB123YU require external flyback protection when driving inductive loads?
No external flyback diode is required for typical inductive loads (e.g., relays ≤ 500 mA). The device's SOA and built-in parasitic capacitance (Cc = 11 pF) provide sufficient energy dissipation during turn-off transients. For high-energy solenoids, a TVS or clamp diode remains recommended per IEC 61000-4-5 compliance.
PDTB123YUF 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:
- PNP - Pre-Biased
- Current - Collector (Ic) (Max):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 70 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 140 MHz
- Power - Max:
- 300 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTB123YUF FAQ
1.How can I place an order for PDTB123YUF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTB123YUF 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 PDTB123YUF reliable?
The price and inventory of PDTB123YUF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTB123YUF is usually 5 days.
3.What payment methods are accepted for PDTB123YUF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTB123YUF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTB123YUF?
PDTB123YUF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTB123YUF 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 PDTB123YUF?
For technical support, including PDTB123YUF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTB123YUF requirements.
6.How does Aetrix verify that PDTB123YUF is sourced from the original manufacturer or authorized distributors?
All PDTB123YUF 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 PDTB123YUF meets industry standards.
7.What is the process for return or replacement of PDTB123YUF?
All PDTB123YUF units undergo pre-shipment inspection (PSI). If there is an issue with PDTB123YUF, 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 PDTB123YUF part is unused and in its original packaging.
Return procedure for PDTB123YUF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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