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Nexperia USA Inc. PDTC115TT,215
- Part No.:
- PDTC115TT,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC115TT,215.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,880
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Product details
Overview
PDTC115TT from Nexperia is an NPN resistor-equipped transistor (RET) with integrated 100 kΩ base bias resistor (R1), designed for general-purpose switching in low-voltage digital interface circuits. It delivers 100 mA DC output current, 50 V collector-emitter breakdown voltage, and 150 mV saturation voltage at IC = 5 mA/IB = 0.25 mA - enabling compact level-shifting and logic buffer functions in space-constrained consumer and industrial PCBs.
For engineers reviewing the PDTC115TT datasheet, PDTC115TT pinout, PDTC115TT application, or PDTC115TT equivalent, key selection criteria include its SOT23 package footprint, built-in R1 value (70–130 kΩ), thermal resistance (500 K/W), DC current gain (hFE ≥ 100 at IC = 1 mA), and compatibility with reflow-only soldering per JEDEC standards.
Technical Context
This device integrates a single NPN silicon transistor with one external-base bias resistor (R1) and no internal emitter resistor (R2 = open), forming a two-terminal-input configuration. Its simplified topology eliminates discrete bias components while maintaining predictable DC operating points across temperature (−65 °C to +150 °C).
The RET operates as a saturated switch under standard logic drive conditions (e.g., 3.3 V or 5 V CMOS/TTL input), with guaranteed VCEsat ≤ 150 mV and ICEO ≤ 1 µA at VCE = 30 V. Its 2.5 pF collector capacitance supports stable operation up to mid-MHz switching frequencies without unintended oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage before breakdown; enables use with 24 V industrial I/O rails. |
| IO (DC) | 100 mA - Continuous load current capability; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 100 kΩ (typ), 70–130 kΩ (min/max) - Sets base current for predictable turn-on; eliminates need for external bias resistor. |
| VCEsat | 150 mV max at IC = 5 mA / IB = 0.25 mA - Ensures low conduction loss and minimal self-heating during switching. |
| hFE | ≥100 at VCE = 5 V, IC = 1 mA - Guarantees reliable saturation with standard logic-level drive sources. |
| Ptot | 250 mW at Tamb ≤ 25 °C - Defines maximum power dissipation in standard SOT23 mounting; requires derating above 25 °C. |
| Cc | 2.5 pF - Low collector junction capacitance; minimizes signal delay and crosstalk in high-speed digital interfaces. |
Pinout & Package
SOT23 plastic surface-mounted package (JEITA: TO-236AB); 3-lead, 1.3 mm × 2.9 mm × 1.0 mm body; RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Connected internally to R1; accepts logic-level control signal (e.g., MCU GPIO) without external pull-up/down. |
| 2 | GND (emitter) | Common reference node; ties directly to PCB ground plane for stable bias and noise immunity. |
| 3 | output (collector) | Switched output node; drives loads connected between VCC and this pin (low-side switching configuration). |
Key Features
| Feature | Design Value |
|---|---|
| Built-in 100 kΩ base bias resistor | Reduces bill-of-materials count by one passive component and eliminates placement error risk in automated assembly. |
| SOT23 footprint compatibility | Enables drop-in replacement of discrete BJT + resistor combinations without PCB redesign or layout change. |
| Reflow-soldering only process | Ensures mechanical reliability and interconnect integrity under JEDEC J-STD-020D.1 moisture sensitivity Level 1 conditions. |
| 150 °C maximum junction temperature | Supports operation in thermally demanding environments such as enclosed industrial controllers or automotive cabin modules. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving multiple indicator LEDs from a 3.3 V microcontroller with limited GPIO current capability. IC Role / Device Role / Timing Role: Low-side switch that translates logic-high signal into LED current path closure. Use Value: Eliminates need for external base resistor per LED channel, reducing component count by 33% in 8-channel designs. |
Use Scenario: Adding extra digital outputs to an STM32-based motor controller where all native GPIOs are allocated. IC Role / Device Role / Timing Role: Logic-level translator and current amplifier for driving optocoupler inputs or relay coils. Use Value: Enables 100 mA sink capability per channel while maintaining <150 mV voltage drop - preserving signal margin for downstream isolation stages. |
| Level-Shifting Interface | Power Sequencing Control |
Use Scenario: Interfacing 1.8 V FPGA I/O banks to 5 V sensor modules requiring active-low enable signals. IC Role / Device Role / Timing Role: Voltage-level translator with defined turn-on threshold set by internal R1. Use Value: Provides deterministic switching at ~0.7 V base-emitter threshold, avoiding metastability seen with passive resistor dividers. |
Use Scenario: Controlling power-up sequence of dual-rail analog front-end (3.3 V & 1.2 V) in medical data acquisition systems. IC Role / Device Role / Timing Role: Delayed-enable switch triggered by reset controller's open-drain output. Use Value: Delivers precise timing via RC network at base (R1 + external capacitor), achieving ±5% delay accuracy over −40 °C to +85 °C. |
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 |
|---|---|---|---|
| PDTC114Y,215 | R1 = 10 kΩ (vs. 100 kΩ); higher base current enables faster switching but increases input power draw. | Better suited for 5 V logic drive with tight propagation delay requirements (<100 ns). | Select when driving capacitive loads >50 pF or requiring sub-50 ns turn-off time. |
| MMBT3904LT1G | No integrated bias resistor; requires external R1/R2 network for bias stability. | Offers higher hFE (≥300) and lower VCEsat (≤100 mV) but increases design complexity and BOM count. | Prefer when precision analog amplification or ultra-low-loss switching is required beyond basic digital switching. |
Compared with PDTC115TT, PDTC114Y,215 provides faster switching at higher input current cost, while MMBT3904LT1G offers superior analog performance but demands additional passives - making PDTC115TT optimal for cost-sensitive, high-volume digital interface applications where simplicity and footprint reduction are primary goals.
Availability
PDTC115TT is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, level-shifting interfaces, and power sequencing control requiring stable component supply across production lifecycles.
Supply support for PDTC115TT 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 leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products business, with core focus on automotive, industrial, computing, and consumer markets.
PDTC115TT belongs to the PDTC115T series of NPN resistor-equipped transistors engineered for simplified digital interface design - reducing component count and improving assembly yield in high-density PCBs.
FAQ
What is the maximum ambient temperature for continuous operation of PDTC115TT?
The PDTC115TT is rated for ambient temperatures from −65 °C to +150 °C, but its usable range depends on power dissipation. At full 250 mW rating, ambient must stay ≤25 °C; above that, linear derating applies per the 500 K/W thermal resistance - e.g., at 85 °C ambient, max power drops to ~150 mW.
Can PDTC115TT be used in linear amplification mode?
No - PDTC115TT is optimized and characterized for saturated switching operation only. Its fixed R1 bias and lack of R2 prevent stable DC biasing for Class-A amplification; hFE variation across IC and temperature further limits linearity. Use discrete transistors like BC847 for analog gain stages.
Is PDTC115TT compatible with lead-free reflow profiles?
Yes - PDTC115TT is qualified for lead-free reflow per JEDEC J-STD-020D.1, supporting peak temperatures up to 260 °C. The SOT23 package uses matte tin plating and meets IPC/JEDEC standard moisture sensitivity Level 1, requiring no dry-pack handling prior to assembly.
How does the open R2 terminal affect circuit behavior?
With R2 = open, the emitter is directly accessible (Pin 2), allowing full control of emitter grounding or connection to feedback networks. This configuration avoids emitter degeneration, maximizing current gain and minimizing VCEsat - ideal for simple on/off switching rather than current-source or emitter-follower topologies.
PDTC115TT,215 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:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 100 kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTC115TT,215 FAQ
1.How can I place an order for PDTC115TT,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC115TT,215 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 PDTC115TT,215 reliable?
The price and inventory of PDTC115TT,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC115TT,215 is usually 5 days.
3.What payment methods are accepted for PDTC115TT,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC115TT,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC115TT,215?
PDTC115TT,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC115TT,215 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 PDTC115TT,215?
For technical support, including PDTC115TT,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC115TT,215 requirements.
6.How does Aetrix verify that PDTC115TT,215 is sourced from the original manufacturer or authorized distributors?
All PDTC115TT,215 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 PDTC115TT,215 meets industry standards.
7.What is the process for return or replacement of PDTC115TT,215?
All PDTC115TT,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC115TT,215, 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 PDTC115TT,215 part is unused and in its original packaging.
Return procedure for PDTC115TT,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC115TT,215 Tags
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