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Nexperia USA Inc. PDTC123TU,115
- Part No.:
- PDTC123TU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC123TU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:1,674
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Product details
Overview
PDTC123TU,115 from Nexperia is an NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, designed for digital switching with built-in 2.2 kΩ input bias resistor and open R2 configuration. It delivers 100 mA output current, supports 50 V collector-emitter voltage, and simplifies load control and IC input driving in space-constrained PCBs.
For engineers reviewing the PDTC123TU,115 datasheet, PDTC123TU,115 pinout, PDTC123TU,115 application, or PDTC123TU,115 equivalent, key selection criteria include its integrated bias network, SOT323 thermal resistance (625 K/W), 150 mV VCEsat at 10 mA/0.5 mA drive, and compatibility with reflow-only assembly per JEDEC J-STD-020.
Technical Context
This RET integrates a single 2.2 kΩ base-input resistor (R1) with no internal emitter-base resistor (R2 = open), enabling direct logic-level drive without external bias components. Its NPN topology provides active-high switching with emitter-grounded configuration.
Designed for low-power digital interface applications, it operates reliably from −65 °C to +150 °C junction temperature, with 200 mW total power dissipation limit at 25 °C ambient and 1 µA ICEO leakage at 30 V VCE - suitable for battery-powered and thermally constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage before breakdown; enables use in 24 V industrial I/O and 3.3/5 V logic interfaces. |
| IO | 100 mA - Continuous DC output current capability; sufficient to drive LEDs, small relays, or logic inputs directly. |
| R1 | 2.2 kΩ (1.54–2.86 kΩ) - Integrated base bias resistor; eliminates need for external pull-up/pull-down, reducing BOM count by one component. |
| VCE(sat) | 150 mV @ IC=10 mA, IB=0.5 mA - Low saturation voltage minimizes power loss and self-heating during on-state operation. |
| Ptot | 200 mW @ Tamb ≤ 25 °C - Power handling limit in SOT323 package; requires thermal derating above 25 °C ambient per 625 K/W Rth(j-a). |
| hFE | 30 min @ VCE=5 V, IC=20 mA - Minimum DC current gain ensures predictable switching behavior under defined load conditions. |
Pinout & Package
SOT323 (SC-70) is a 3-lead surface-mount plastic package measuring 2.2 × 1.35 × 0.9 mm, optimized for high-density routing and automated placement. Thermal resistance is 625 K/W (junction-to-ambient, free air).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts TTL/CMOS logic-level signals directly without series resistor. |
| 2 | GND (emitter) | Common reference node; must be tied to system ground for proper biasing and current return path. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode, relay coil) with supply rail on opposite side. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 bias resistor | 2.2 kΩ ±29% tolerance eliminates external base resistor, reducing layout area and assembly steps. |
| Open R2 configuration | No emitter-base resistor allows full control of turn-off timing via external circuitry or natural leakage discharge. |
| 100 mA output rating | Supports direct driving of medium-current loads such as status indicators, optocoupler inputs, or gate drivers. |
| Reflow-solder compatible | Qualified per JEDEC J-STD-020; only reflow soldering is recommended - avoids mechanical stress and thermal damage. |
Applications
| LED Indicator Control | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Driving multiple status LEDs from limited MCU I/O pins with minimal external components. IC Role / Device Role / Timing Role: Digital switch translating logic-high signal into current-limited LED anode drive. Use Value: Eliminates discrete base resistor per LED channel, cutting BOM cost and PCB real estate by >30% vs. BC847 + R solution. |
Use Scenario: Extending low-drive-strength microcontroller outputs to control higher-current peripherals. IC Role / Device Role / Timing Role: Level-shifting and current-boosting buffer between 3.3 V MCU port and 5 V/12 V load. Use Value: Enables reliable 100 mA sink capability without external bias network, preserving GPIO timing integrity. |
| Logic-Level Signal Conditioning | Low-Power Sensor Interface |
|
Use Scenario: Converting noisy or weak digital signals (e.g., from mechanical switches or open-collector sensors) into clean CMOS-compatible levels. IC Role / Device Role / Timing Role: Schmitt-trigger-like input conditioning via controlled hFE and R1-defined threshold. Use Value: Reduces susceptibility to EMI-induced false triggering while maintaining sub-microsecond propagation delay. |
Use Scenario: Enabling/disabling analog sensor power rails or reference paths based on system sleep/wake state. IC Role / Device Role / Timing Role: Low-quiescent-current enable switch controlling VCC to passive sensors or ADC references. Use Value: Achieves <100 nA standby leakage (ICBO) and fast turn-on (<100 ns typical), minimizing sensor bias error and wake latency. |
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 |
|---|---|---|---|
| PDTC123TK,115 | SOT346 (SC-59A) package; 250 mW Ptot, 500 K/W Rth(j-a) - higher power handling but larger footprint. | Better thermal performance in moderate-power switching; less suitable for ultra-dense layouts. | Select when board space permits and >200 mW dissipation is required. |
| BC847B,215 | Standard NPN BJT without integrated resistors; requires external 2.2 kΩ base resistor and layout space. | Offers higher hFE (200 min) and lower VCE(sat) (100 mV), but increases component count and design complexity. | Choose when precise gain control or lowest possible saturation voltage is critical and BOM count is not constrained. |
Compared with PDTC123TK,115, the PDTC123TU,115 trades thermal margin for 40% smaller PCB area; versus BC847B,215, it reduces assembly steps and test points at the cost of fixed bias ratio and slightly higher VCE(sat).
Availability
PDTC123TU,115 is available at Aetrix Electronics and suitable for LED indicator control, microcontroller GPIO expansion, logic-level signal conditioning, and low-power sensor interface applications requiring stable component supply across production lifecycles.
Supply support for PDTC123TU,115 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 delivering high-performance, reliable, and energy-efficient components for automotive, industrial, computing, consumer, and communications markets.
PDTC123TU,115 belongs to the PDTC123T series of NPN resistor-equipped transistors, engineered to replace discrete BJT + resistor combinations in digital switching applications where miniaturization and assembly efficiency are critical.
FAQ
Is PDTC123TU,115 RoHS compliant and halogen-free?
Yes. PDTC123TU,115 meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21. The device uses lead-free matte tin termination and complies with Nexperia's Eco Plan requirements, including absence of brominated flame retardants and antimony trioxide.
What is the maximum allowable peak current for PDTC123TU,115?
The absolute maximum peak collector current is 100 mA for single pulses ≤1 ms, as specified in Table 6. Exceeding this value risks permanent degradation of hFE or bond wire integrity. For repetitive pulsed operation, average power must remain within the 200 mW Ptot limit at the operating ambient temperature.
Can PDTC123TU,115 be used in linear amplifier configurations?
No. PDTC123TU,115 is optimized for saturated switching, not linear amplification. Its fixed R1 and lack of R2 prevent stable DC biasing in common-emitter amplifier topologies. Use BC847 variants or dedicated small-signal transistors for analog gain stages.
Does PDTC123TU,115 require a heatsink in standard SMT applications?
No heatsink is required for typical operation. At 25 °C ambient and 100 mA continuous current, junction temperature rise is ~125 °C (625 K/W × 0.2 W), resulting in Tj ≈ 150 °C - the absolute maximum rating. Derating is mandatory above 25 °C ambient; for sustained 100 mA loads above 40 °C, reduce current or improve PCB copper area.
PDTC123TU,115 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):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 30 @ 20mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC123TU,115 FAQ
1.How can I place an order for PDTC123TU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC123TU,115 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 PDTC123TU,115 reliable?
The price and inventory of PDTC123TU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC123TU,115 is usually 5 days.
3.What payment methods are accepted for PDTC123TU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC123TU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC123TU,115?
PDTC123TU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC123TU,115 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 PDTC123TU,115?
For technical support, including PDTC123TU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC123TU,115 requirements.
6.How does Aetrix verify that PDTC123TU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC123TU,115 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 PDTC123TU,115 meets industry standards.
7.What is the process for return or replacement of PDTC123TU,115?
All PDTC123TU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC123TU,115, 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 PDTC123TU,115 part is unused and in its original packaging.
Return procedure for PDTC123TU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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