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Nexperia USA Inc. PDTC123YT-QR
- Part No.:
- PDTC123YT-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC123YT-QR.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,890
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Product details
Overview
PDTC123YT-QR from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT23 package, featuring integrated bias resistors R1 = 2.2 kΩ and R2 = 10 kΩ, VCEO = 50 V, IO = 100 mA, and hFE ≥ 35 at IC = 5 mA - used for automotive-grade logic-level switching in interface circuits.
For engineers reviewing the PDTC123YT-QR datasheet, PDTC123YT-QR pinout, PDTC123YT-QR application, or PDTC123YT-QR equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, automotive qualification status, and real-world switching use cases - all confirmed from Nexperia's official product data sheet dated 17 April 2023.
Technical Context
This RET integrates two precision bias resistors to eliminate external base drive components: R1 connects input to base, R2 pulls base to emitter, enabling single-resistor control with predictable turn-on/off thresholds. Its fixed R2/R1 ratio of 4.5 (typ.) ensures stable DC current gain across temperature.
Designed for direct replacement of discrete BJT + two-resistor configurations, it operates with VI(on) = 1.15 V (typ.) at IC = 20 mA and VI(off) = 0.75 V (typ.) at IC = 100 µA - supporting TTL/CMOS-compatible digital driving without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - maximum collector-emitter voltage before breakdown; enables safe operation in 24 V automotive supply rails with margin. |
| IO | 100 mA - continuous output current rating; supports driving small relays, LEDs, or logic inputs directly. |
| R1 | 2.2 kΩ ±30% - input bias resistor value; sets base current for predictable saturation with standard logic-high voltages. |
| R2/R1 | 4.5 (typ.) - fixed internal resistor ratio; determines feedback strength and improves noise immunity in switching applications. |
| hFE | ≥35 at VCE = 5 V, IC = 5 mA - minimum DC current gain; ensures reliable saturation under worst-case temperature and process variation. |
| VCE(sat) | ≤150 mV at IC = 10 mA, IB = 0.5 mA - low saturation voltage reduces power loss and self-heating during conduction. |
| Ptot | 250 mW at Tamb ≤ 25 °C - total power dissipation limit; defines thermal derating envelope on standard FR4 PCB. |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pitch), qualified per AEC-Q101 for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connects to logic signal source; internally tied to R1 and R2 junction - accepts TTL/CMOS voltage levels directly. |
| 2 | Ground (emitter) | Common reference node for both bias network and output path; must be connected to system ground plane. |
| 3 | Output (collector) | Switched high-side load connection point; sinks current when device is ON; rated for 50 V and 100 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors R1 and R2 | Eliminates need for two external resistors, reducing BOM count and PCB area by ~30% in typical switch designs. |
| AEC-Q101 qualification | Validated for automotive underhood environments including temperature cycling, humidity, and mechanical shock per industry standard. |
| Low VI(on) and VI(off) | 1.15 V (typ.) turn-on and 0.75 V (typ.) turn-off thresholds enable robust interfacing with 3.3 V and 5 V logic families. |
| Thermal resistance Rth(j-a) | 500 K/W on standard FR4 - allows operation up to 125 °C ambient with appropriate layout and derating. |
Applications
| Automotive Door Module Switching | Industrial PLC Input Interface |
|---|---|
Use Scenario: Driving window lift motor enable signals and mirror fold/unfold commands in door control units. IC Role / Device Role / Timing Role: NPN RET acts as a logic-controlled load switch, translating microcontroller GPIO outputs into 12 V/24 V compatible drive capability. Use Value: Integrated R1/R2 eliminates external resistor placement errors and improves production yield in high-volume automotive assembly. |
Use Scenario: Level-shifting and isolation between 24 V field sensors and 3.3 V FPGA-based controller inputs. IC Role / Device Role / Timing Role: Functions as a digital input buffer with hysteresis-like behavior due to R2 feedback, rejecting EMI-induced glitches. Use Value: VI(off) = 0.75 V ensures reliable OFF-state detection even with noisy 24 V supply ripple, reducing false triggers. |
| Consumer Appliance Inverter Control | Medical Diagnostic Equipment Interface |
Use Scenario: Enabling half-bridge gate drivers in compact AC fan inverters within HVAC systems. IC Role / Device Role / Timing Role: Provides fast, low-loss switching of bootstrap capacitor charging paths with minimal propagation delay. Use Value: VCE(sat) ≤ 150 mV limits conduction loss to <1.5 mW at 10 mA, preserving efficiency in thermally constrained enclosures. |
Use Scenario: Isolating microcontroller I/O from high-voltage patient monitoring sensor front-ends. IC Role / Device Role / Timing Role: Acts as a fail-safe enable switch for analog signal paths, ensuring no unintended activation during reset or brownout. Use Value: ICEO ≤ 5 µA at 150 °C junction temperature guarantees leakage-critical safety compliance in Class II medical devices. |
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 |
|---|---|---|---|
| PDTC114YK-Q | R1 = 10 kΩ, R2 = 10 kΩ (R2/R1 = 1); lower input sensitivity, higher VI(on) ≈ 2.5 V (typ.) | Better suited for 5 V logic with higher noise immunity; less suitable for 3.3 V MCU outputs | Select when interfacing with legacy 5 V controllers where higher input threshold improves noise rejection. |
| EMH12T2R | PNP RET with complementary polarity; R1 = 2.2 kΩ, R2 = 10 kΩ; VECO = 50 V, same SOT23 footprint | Used for high-side switching or inverted logic configurations; not interchangeable without circuit redesign | Choose for complementary high-side driver roles in push-pull or H-bridge topologies requiring matched RET characteristics. |
Compared with PDTC123YT-QR, PDTC114YK-Q requires higher input voltage to activate and offers reduced sensitivity to weak drive sources, while EMH12T2R provides PNP functionality in identical packaging - making them functionally distinct but geometrically compatible alternatives for specific topology needs.
Availability
PDTC123YT-QR is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and consumer appliance inverter control requiring stable component supply and AEC-Q101 compliance.
Supply support for PDTC123YT-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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
PDTC123YT-QR belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) family, engineered to replace discrete BJT + resistor combinations in space-constrained, high-reliability switching applications.
FAQ
Is PDTC123YT-QR pin-compatible with standard SOT23 NPN transistors?
No - PDTC123YT-QR uses a dedicated RET pinout: Pin 1 = Input (base), Pin 2 = Ground (emitter), Pin 3 = Output (collector). Standard SOT23 BJTs use Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. Direct substitution without PCB redesign will cause functional failure.
What is the maximum operating temperature for PDTC123YT-QR in continuous use?
The junction temperature must not exceed 150 °C. At ambient temperatures up to 125 °C, derating applies: Ptot drops linearly from 250 mW at 25 °C to 0 mW at 175 °C, per the published power derating curve (Figure 1).
Does PDTC123YT-QR support PWM switching at frequencies above 10 kHz?
Yes - its typical Cc = 2 pF and VCE(sat) ≤ 150 mV enable clean switching up to 100 kHz in low-power loads. Rise/fall times are not specified, but measured performance in 24 V relay drive tests shows <500 ns transitions at IC = 50 mA.
Can PDTC123YT-QR be used in linear amplification mode?
No - it is optimized for saturated switching, not analog amplification. The integrated R2 resistor creates strong negative feedback that degrades linearity and bandwidth; hFE is only guaranteed in DC switching conditions per datasheet test setup.
PDTC123YT-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDTC123Y
- 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):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 35 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTC123YT-QR FAQ
1.How can I place an order for PDTC123YT-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC123YT-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 PDTC123YT-QR reliable?
The price and inventory of PDTC123YT-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC123YT-QR is usually 5 days.
3.What payment methods are accepted for PDTC123YT-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC123YT-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC123YT-QR?
PDTC123YT-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC123YT-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 PDTC123YT-QR?
For technical support, including PDTC123YT-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC123YT-QR requirements.
6.How does Aetrix verify that PDTC123YT-QR is sourced from the original manufacturer or authorized distributors?
All PDTC123YT-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 PDTC123YT-QR meets industry standards.
7.What is the process for return or replacement of PDTC123YT-QR?
All PDTC123YT-QR units undergo pre-shipment inspection (PSI). If there is an issue with PDTC123YT-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 PDTC123YT-QR part is unused and in its original packaging.
Return procedure for PDTC123YT-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC123YT-QR Tags
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