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Nexperia USA Inc. PXT4401,115
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- Part No.:
- PXT4401,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
PXT4401,115.pdf
- Description:
- TRANS NPN 40V 0.6A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:5,594
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Product details
Overview
PXT4401,115 from Nexperia is an NPN bipolar junction transistor (BJT) designed for medium-power switching and linear amplification. It delivers 600 mA DC collector current, supports 40 V collector-emitter voltage, and features low saturation voltage (750 mV at 500 mA/50 mA), housed in a thermally enhanced SOT89 surface-mount package with exposed collector pad.
For engineers reviewing the PXT4401,115 datasheet, PXT4401,115 pinout, PXT4401,115 application, or PXT4401,115 equivalent, key selection criteria include its thermal resistance (113 K/W with 6 cm² copper pad), DC current gain (hFE = 100–300 at 150 mA), switching speed (toff = 250 ns), and compatibility with industrial control load drivers and consumer power management circuits.
Technical Context
The PXT4401,115 operates as a general-purpose NPN BJT with fixed emitter-base and collector-base junction structures optimized for stable DC biasing and fast transient response. Its design emphasizes thermal performance via a large collector pad and low Rth(j-s) (30 K/W), enabling reliable operation under pulsed loads up to 800 mA.
It exhibits a transition frequency (fT) of 250 MHz at 20 mA/10 V, supporting high-speed switching in DC-DC converters and relay drivers. The device's VCE(sat) remains below 400 mV at 150 mA/15 mA drive, minimizing conduction loss in low-voltage logic-controlled switches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V - Maximum safe collector-emitter voltage under open-base conditions; defines upper rail limit in 24 V industrial switching circuits. |
| IC (DC) | 600 mA - Continuous collector current rating; supports driving solenoids, small motors, or LED arrays without forced cooling. |
| hFE | 100–300 - DC current gain at IC = 150 mA; enables low-base-drive designs with standard microcontroller GPIOs. |
| VCE(sat) | 750 mV max at IC = 500 mA/IB = 50 mA - Low saturation voltage reduces power dissipation and self-heating during on-state operation. |
| fT | 250 MHz - Transition frequency at 20 mA/10 V; ensures adequate bandwidth for PWM frequencies up to ~10 MHz in gate driver pre-stages. |
| Rth(j-a) | 113 K/W - Junction-to-ambient thermal resistance with 6 cm² copper pad; allows ~1.1 W power dissipation at Tamb = 25 °C. |
| toff | 250 ns - Turn-off time between 10%–90% levels; supports switching frequencies >100 kHz in compact power stages. |
Pinout & Package
Package: SOT89 (SC-62), plastic surface-mount package with exposed collector pad for enhanced thermal conduction; 3-terminal configuration optimized for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current return path; connected to ground or low-side reference in common-emitter configurations. |
| 2 | Collector | Main power output terminal; soldered to large copper area for thermal management and current routing. |
| 3 | Base | Control input; requires current-limited drive (e.g., 50 mA max peak) to ensure saturation without overdrive. |
Key Features
| Feature | Design Value |
|---|---|
| Thermally enhanced SOT89 package | Exposed collector pad reduces Rth(j-a) to 113 K/W with 6 cm² copper, enabling higher continuous current in space-constrained layouts. |
| High DC current gain (hFE) | 100–300 at IC = 150 mA ensures robust saturation with minimal base drive, reducing MCU GPIO loading. |
| Low VCE(sat) | ≤750 mV at 500 mA/50 mA minimizes conduction loss and improves efficiency in battery-powered switching applications. |
| Fast switching performance | 250 ns turn-off time and 250 MHz fT support high-frequency PWM control in DC-DC regulators and motor drivers. |
Applications
| Industrial Motor Control | Consumer Power Management |
|---|---|
Use Scenario: Driving 24 V DC brushed motors in programmable logic controllers and HVAC actuators. IC Role / Device Role / Timing Role: NPN switch controlling motor current path; operated in saturation mode with microcontroller PWM input. Use Value: Low VCE(sat) and high IC rating reduce heat generation and eliminate need for heatsinks in DIN-rail mounted enclosures. | Use Scenario: Enabling/disabling 5 V or 12 V rails in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: High-side or low-side load switch controlled by system management IC or MCU GPIO. Use Value: Fast toff (250 ns) ensures clean power sequencing; hFE ≥100 simplifies base resistor selection for 3.3 V logic interfaces. |
| LED Driver Circuits | Relay and Solenoid Drivers |
Use Scenario: Constant-current switching for high-brightness LED strings in signage and lighting modules. IC Role / Device Role / Timing Role: Current-switching element in series with LED load; driven by PWM controller for dimming control. Use Value: 600 mA IC rating supports multi-LED chains; low Cc (8 pF) preserves signal integrity at PWM edges. | Use Scenario: Driving 12 V/24 V electromagnetic relays and fuel injectors in appliance control boards. IC Role / Device Role / Timing Role: Interface transistor amplifying logic-level signals to coil-driving current levels. Use Value: Robust ICM (800 mA peak) handles relay inrush; VCEO = 40 V provides margin against back-EMF spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBT4401 | SOT23 package; lower Ptot (310 mW); Rth(j-a) ≈ 300 K/W; same hFE range but lower IC (200 mA). | Not suitable for >300 mA continuous loads or thermally demanding PCBs without active cooling. | Select when board space is critical and load current ≤200 mA; avoid for motor or relay drivers requiring >400 mA. |
| PZT4401 | SOT223 package; higher Ptot (1.5 W); Rth(j-a) ≈ 60 K/W; identical electrical specs but larger footprint and better thermal handling. | Better suited for high-reliability industrial environments where ambient temperature exceeds 70 °C. | Select when thermal margin is prioritized over size; compatible pinout but requires PCB layout change. |
Compared with MMBT4401 and PZT4401, the PXT4401,115 uniquely balances SOT89's compactness with 1.1 W thermal capability-making it optimal for mid-power switching where both space and heat dissipation matter.
Availability
PXT4401,115 is available at Aetrix Electronics and suitable for industrial motor control, consumer power management, and LED driver circuits requiring stable component supply and long-term manufacturability.
Supply support for PXT4401,115 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 leader in discrete semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in high-volume, high-reliability components for automotive, industrial, and consumer markets.
The PXT4401,115 belongs to Nexperia's "General Purpose Transistors" product line, engineered for cost-effective, thermally robust switching in space-constrained industrial and consumer power interfaces.
FAQ
What is the maximum allowable junction temperature for PXT4401,115?
The absolute maximum junction temperature (Tj) is 150 °C, as specified in the Limiting Values table. Operation above this temperature risks permanent degradation of the silicon die and bond wires. Derating curves in Figure 2 confirm that full 1.1 W power dissipation is only permissible at Tamb ≤25 °C with a 6 cm² copper pad.
Can PXT4401,115 be used in linear amplifier configurations?
Yes-it is characterized for linear amplification per its datasheet Applications section and exhibits hFE stability across IC = 0.1 mA to 500 mA. However, its SOT89 thermal design favors switching use; linear operation at >100 mW requires careful thermal design due to limited Rth(j-a) improvement beyond 6 cm² copper.
Is there a PNP counterpart to PXT4401,115?
Yes-the PXT4403 is the designated PNP complement, sharing identical SOT89 packaging, voltage/current ratings (VCEO = −40 V, IC = −600 mA), and thermal characteristics. Both devices are marked with matching *2X codes and share the same footprint for complementary pair designs in H-bridge or push-pull outputs.
Does PXT4401,115 require a base resistor in all applications?
Yes-a current-limiting base resistor is mandatory to prevent excessive IB, which could exceed the 200 mA peak rating or cause thermal runaway. For 500 mA collector current, typical design uses IB = 50 mA, requiring ~68 Ω when driven from 5 V (accounting for VBE(sat) ≈ 1.2 V). Microcontroller GPIOs must be verified for sink/source capability before direct connection.
PXT4401,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 600 mA
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 750mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 150mA, 1V
- Power - Max:
- 1.1 W
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
PXT4401,115 FAQ
1.How can I place an order for PXT4401,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PXT4401,115 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 PXT4401,115 reliable?
The price and inventory of PXT4401,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PXT4401,115 is usually 5 days.
3.What payment methods are accepted for PXT4401,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PXT4401,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PXT4401,115?
PXT4401,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PXT4401,115 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 PXT4401,115?
For technical support, including PXT4401,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PXT4401,115 requirements.
6.How does Aetrix verify that PXT4401,115 is sourced from the original manufacturer or authorized distributors?
All PXT4401,115 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 PXT4401,115 meets industry standards.
7.What is the process for return or replacement of PXT4401,115?
All PXT4401,115 units undergo pre-shipment inspection (PSI). If there is an issue with PXT4401,115, 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 PXT4401,115 part is unused and in its original packaging.
Return procedure for PXT4401,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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