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Nexperia USA Inc. PDTC115EU,115
- Part No.:
- PDTC115EU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC115EU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,445
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Product details
Overview
PDTC115EU,115 from NXP Semiconductors is an NPN resistor-equipped transistor (RET) with integrated 100 kΩ base bias resistors (R1 and R2), designed for compact digital switching in space-constrained PCB layouts. It delivers 20 mA DC output current, supports 50 V collector-emitter voltage, and operates reliably up to 150 °C junction temperature - commonly used in level-shifting interfaces between microcontrollers and LED drivers or MOSFET gate control circuits.
For engineers reviewing the PDTC115EU,115 datasheet, PDTC115EU,115 pinout, PDTC115EU,115 application, or PDTC115EU,115 equivalent, key selection criteria include its SOT323 (SC-70) package footprint, guaranteed input-on/off voltage thresholds (Vi(on) = 1.5–3 V, Vi(off) = 0.5–1.1 V), DC current gain (hFE ≥ 80 at IC = 5 mA), and thermal resistance (Rth(j-a) = 625 K/W).
Technical Context
This RET integrates two precision 100 kΩ bias resistors to eliminate external base resistors, enabling direct connection to logic-level signals without additional components. Its internal resistor ratio (R2/R1 = 1.0 ± 0.2) ensures stable saturation behavior under varying drive conditions.
The device functions as a single-stage digital switch with defined turn-on/turn-off thresholds, supporting TTL- and CMOS-compatible input drive. Its 200 mW power dissipation limit and 625 K/W thermal resistance require careful trace design on FR4 substrates for sustained 20 mA operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - maximum safe collector-emitter voltage before breakdown; defines rail compatibility with 3.3 V/5 V logic systems. |
| IO (DC) | 20 mA - continuous output current capability; sufficient to drive LEDs, small relays, or logic inputs directly. |
| R1 / R2 | 100 kΩ ±30% - built-in base bias network eliminates two external resistors and reduces BOM count by one component. |
| hFE | ≥80 at IC = 5 mA - ensures reliable saturation with low base drive current (IB = 0.25 mA typical), minimizing MCU GPIO loading. |
| Vi(on) | 1.5–3 V - minimum input voltage to guarantee full conduction; compatible with 3.3 V CMOS outputs. |
| Vi(off) | 0.5–1.1 V - maximum input voltage to ensure cutoff; provides noise margin against logic-low leakage. |
| Ptot | 200 mW at Tamb ≤ 25 °C - sets practical current limit under still-air conditions; derates linearly above 25 °C ambient. |
Pinout & Package
PDTC115EU,115 is housed in a plastic surface-mounted SOT323 (SC-70) package measuring 2.2 × 1.35 × 0.95 mm, optimized for high-density routing and reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Internal node connecting R1 and R2 | Input terminal for logic-level signal; internally biased via dual 100 kΩ resistors to enable resistorless interface. |
| 2 (Emitter) | Emitter of NPN transistor | Common reference node; tied to ground in standard low-side switch configuration. |
| 3 (Collector) | Collector of NPN transistor | Switched output node; connects to load (e.g., LED anode or MOSFET gate) and supply rail. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | Two matched 100 kΩ resistors (R1, R2) reduce external component count and layout area by eliminating discrete base resistors. |
| Guaranteed switching thresholds | Vi(on) ≤ 3 V and Vi(off) ≥ 0.5 V ensure robust logic-level compatibility across temperature and process variation. |
| SOT323 footprint | 2.2 × 1.35 mm body enables placement in tight spaces where larger packages like SOT23 or SOT346 are impractical. |
| Thermal performance | Rth(j-a) = 625 K/W allows 20 mA DC operation with minimal copper pour; no heatsink required for intermittent use. |
Applications
| LED Driver Interface | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V MCU I/O pins with limited current sourcing capability. IC Role / Device Role / Timing Role: Low-side digital switch translating logic-high to LED-on state with zero external passives. Use Value: Eliminates need for two discrete resistors per channel, reducing BOM cost and board area by ~3 mm² per instance. |
Use Scenario: Adding extra digital outputs to resource-constrained MCUs (e.g., Cortex-M0+) via parallel GPIO expansion. IC Role / Device Role / Timing Role: Level-translating buffer that isolates MCU pins from higher-voltage peripheral loads. Use Value: Enables direct 3.3 V → 5 V or 12 V interface without level-shifter ICs or discrete transistor + resistor combos. |
| Inverter Circuit | Logic-Level Translator |
Use Scenario: Implementing non-inverting or inverting logic gates in analog-digital hybrid boards where gate ICs are unavailable. IC Role / Device Role / Timing Role: Single-transistor inverter stage with predictable threshold and fast edge response (Cc = 2.5 pF). Use Value: Provides sub-100 ns propagation delay with deterministic switching points, avoiding timing ambiguity of unbuffered logic. |
Use Scenario: Converting open-drain I²C signals or push-pull UART lines between mixed-voltage domains (e.g., 1.8 V sensor ↔ 3.3 V host). IC Role / Device Role / Timing Role: Active pull-up/pull-down switch enabling bidirectional voltage translation without direction control pins. Use Value: Supports >1 MHz data rates with <150 mV saturation voltage, preserving signal integrity better than passive resistor dividers. |
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 |
|---|---|---|---|
| PDTC123EU,115 | R1 = 2.2 kΩ, R2 = 10 kΩ - lower input impedance, higher base current draw (IB ≈ 1.5 mA at 3.3 V). | Better suited for driving heavier loads (>50 mA) but increases MCU GPIO loading and reduces noise immunity. | Select when higher output current or faster switching is needed; avoid if GPIO current budget is tight. |
| EMH11T2R | Same SOT323 package but R1 = 47 kΩ, R2 = 47 kΩ - symmetric bias with tighter tolerance (±10%) and higher hFE (min 160). | Offers improved gain consistency and lower input threshold (Vi(on) = 0.9 V typ), enabling compatibility with 1.8 V logic. | Prefer for ultra-low-voltage systems or where gain stability over temperature is critical; slightly higher cost. |
Compared with PDTC123EU,115 and EMH11T2R, the PDTC115EU,115 provides optimal balance of noise margin, GPIO loading, and cost for 3.3 V logic interfacing - its 100 kΩ bias network minimizes current draw while maintaining robust 0.5–1.1 V off-threshold and 1.5–3 V on-threshold.
Availability
PDTC115EU,115 is available at Aetrix Electronics and suitable for LED driver interfaces, microcontroller GPIO expanders, inverter circuits, and logic-level translators requiring stable component supply and long-term production continuity.
Supply support for PDTC115EU,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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
PDTC115EU,115 belongs to the PDTC115E series of resistor-equipped transistors, engineered to simplify digital interface design by integrating precision bias networks - targeting cost-sensitive, high-volume consumer and industrial control applications.
FAQ
What is the maximum operating temperature for PDTC115EU,115?
The PDTC115EU,115 has a maximum junction temperature (Tj) of 150 °C and an operating ambient temperature range of −65 °C to +150 °C. Its thermal resistance (Rth(j-a) = 625 K/W) means it can sustain 20 mA DC current at up to +75 °C ambient with standard PCB copper; derating is required beyond that point.
Can PDTC115EU,115 replace a standard NPN transistor like BC847 in switching applications?
Yes, but only when the circuit uses base biasing - PDTC115EU,115 replaces both the transistor and its two base resistors. It cannot substitute for emitter-follower or linear amplifier configurations due to fixed internal resistors. Verify Vi(on)/Vi(off) thresholds match your drive signal levels before replacement.
Is reflow soldering mandatory for PDTC115EU,115?
Yes - the datasheet explicitly states "reflow soldering is the only recommended soldering method" for PDTC115EU,115. Hand-soldering risks thermal damage due to its small SOT323 package and internal resistor tolerances; wave soldering is not supported per NXP's mounting guidelines.
Does PDTC115EU,115 support bidirectional signal translation?
No - PDTC115EU,115 is a unidirectional NPN switch configured for low-side operation only. It lacks internal circuitry for automatic direction detection or dual-rail operation. For true bidirectional level translation (e.g., I²C), dedicated translator ICs or discrete FET-based solutions are required.
PDTC115EU,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):
- 20 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 100 kOhms
- Resistor - Emitter Base (R2):
- 100 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 250µA, 5mA
- 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
PDTC115EU,115 FAQ
1.How can I place an order for PDTC115EU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC115EU,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 PDTC115EU,115 reliable?
The price and inventory of PDTC115EU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC115EU,115 is usually 5 days.
3.What payment methods are accepted for PDTC115EU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC115EU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC115EU,115?
PDTC115EU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC115EU,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 PDTC115EU,115?
For technical support, including PDTC115EU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC115EU,115 requirements.
6.How does Aetrix verify that PDTC115EU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC115EU,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 PDTC115EU,115 meets industry standards.
7.What is the process for return or replacement of PDTC115EU,115?
All PDTC115EU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC115EU,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 PDTC115EU,115 part is unused and in its original packaging.
Return procedure for PDTC115EU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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