UTP3315TFL-II 1Ch Linear DC Power Supply

UNI-T UTP3315TFL-II Linear DC Power Supply

High-Capacity Precision Power for Demanding Electronics Applications

The UNI-T UTP3315TFL-II is a high-performance single-channel linear DC power supply designed for electronics professionals, laboratories, and manufacturing environments that require greater current capacity and superior power stability. With its enhanced 0-5A current output at 0-30V, high-precision regulation, and ultra-low noise characteristics, this powerful 150W benchtop power supply delivers the clean, stable power needed for demanding electronics development, testing, and production applications. Featuring a high-resolution 4-digit display, exceptional load regulation (CV≤0.01%+5mV), and automatic constant voltage/constant current mode switching, the UTP3315TFL-II provides the precision and reliability required by R&D engineers, production test technicians, audio equipment developers, and industrial electronics repair professionals.

Key Features

• Enhanced Power Capacity: 0-30V voltage range with 0-5A current output for demanding applications
• 150W Total Power Output: High power capacity for testing and powering substantial loads
• High-Resolution Display: 4-digit voltage and current display with 10mV/1mA precision
• Ultra-Clean Power: Exceptionally low ripple and noise (≤2mVrms) for sensitive electronics
• Superior Load Regulation: CV≤0.01%+5mV, CC≤0.1%+10mA for consistent power delivery
• Linear Design: Clean, noise-free power superior to switching supplies
• Automatic CV/CC Mode Switching: Seamless transition with current limit protection
• Compact Professional Design: Robust construction in space-efficient form factor
• Outstanding Reliability: MTBF(e) of ≥2000 hours for dependable long-term operation
• Universal Power Input: Compatible with 110V/220V±5% AC, 50Hz/60Hz power sources

Laboratory-Grade Linear Power for Professional Applications

The UNI-T UTP3315TFL-II utilizes linear regulation technology to deliver exceptionally clean, stable power essential for professional electronics work. Unlike switching power supplies that introduce high-frequency noise, the UTP3315TFL-II's linear design provides pure DC power with minimal interference. With ripple and noise specifications of just 2mVrms and exceptional load regulation (CV≤0.01%+5mV, CC≤0.1%+10mA), this power supply ensures that measurements, test results, and circuit behavior remain unaffected by power supply artifacts even at higher current outputs.

The 0-5A current capacity significantly expands application possibilities beyond standard 3A benchtop supplies, enabling testing and development of higher-power circuits, industrial electronics, power amplifiers, and automotive systems. The precision 4-digit display with 10mV/1mA resolution allows exact setting and monitoring of power parameters, crucial for replicating specific operating conditions and ensuring consistent power delivery for reliable results.

Enhanced Current Capability for Demanding Applications

With its 150W power capacity and 5A maximum current output, the UTP3315TFL-II handles applications that exceed the capabilities of standard benchtop power supplies:

• Higher-Power Circuit Testing: Support development and testing of circuits requiring more than 3A
• Motor Controller Development: Power and test motor drive circuits and controllers
• Power Amplifier Design: Provide sufficient current for audio power amplifier testing
• Automotive Electronics: Test vehicle control modules and actuators under realistic load conditions
• Industrial Control Systems: Power industrial electronics during development and repair
• Battery Charging Development: Test charging circuits with precise current control up to 5A

This expanded current capacity eliminates the need for multiple parallel supplies or upgrading to more expensive high-power units for applications in the 3-5A range, providing a cost-effective solution for professionals who occasionally need higher current but don't require the expense of laboratory-grade 10A+ supplies.

Automatic Constant Voltage/Constant Current Operation

The UTP3315TFL-II automatically switches between constant voltage (CV) and constant current (CC) modes based on load conditions, providing intelligent power delivery and comprehensive protection:

• Constant Voltage Mode: Maintains precise voltage output while current varies with load
• Constant Current Mode: Limits current to preset value, protecting circuits from overcurrent
• Automatic Mode Switching: Seamless transition between CV and CC based on load requirements
• Current Limit Protection: Set maximum current to protect sensitive components during testing
• Visual Mode Indication: Clear LED indicators show active operating mode

This automatic operation proves particularly valuable when working with higher-power circuits where overcurrent conditions could cause significant damage. The ability to set precise current limits up to 5A provides protection during testing of unknown loads, development of battery charging systems, electroplating applications, and troubleshooting of potentially faulty equipment.

Professional Applications

R&D Laboratory Testing

Research engineers and laboratory technicians rely on the UTP3315TFL-II's precision and stability for:

• Powering development projects and prototype testing with laboratory-grade precision
• Testing higher-current circuits and systems beyond standard 3A capabilities
• Providing ultra-clean power for analog circuit development and characterization
• Supporting research environments where power quality directly impacts test results
• Conducting long-term reliability testing with consistent power delivery

Production Line Electronics Testing

Manufacturing quality control specialists utilize the UTP3315TFL-II for:

• Production testing of assembled electronics with consistent power conditions
• Burn-in testing of higher-power devices and assemblies
• Quality control verification across production batches
• Final testing of industrial control systems and power electronics
• Continuous operation in manufacturing environments with exceptional reliability

Audio Equipment Development

Audio engineers depend on the UTP3315TFL-II's ultra-low noise for:

• Designing and testing audio amplifiers with clean power free from artifacts
• Developing sensitive analog audio circuits without power-related interference
• Testing power amplifier stages with sufficient current capacity
• Isolating and addressing circuit performance issues without power supply noise
• Characterizing audio component behavior under precise power conditions

RF and Communications Equipment

Communications equipment developers leverage the UTP3315TFL-II for:

• Powering radio frequency circuits with stable, precise power control
• Testing transmitters and receivers with low-noise power delivery
• Developing communications equipment with excellent power regulation
• Supporting RF amplifier design with sufficient current capacity
• Ensuring optimal performance in sensitive communications circuits

Industrial Electronics Repair

Service technicians utilize the UTP3315TFL-II's capabilities for:

• Diagnosing and repairing industrial electronics with adequate current capacity
• Testing industrial control systems and motor drivers
• Powering higher-current industrial components during troubleshooting
• Providing precise control for careful diagnosis of sensitive circuits
• Testing automotive electronics and control modules under realistic conditions

Technical Specifications

General Specifications

• Power Input: 110V/220V±5% AC (switchable), 50Hz/60Hz
• Display Type: Dual 4-digit LED display
• Display Resolution: 10mV voltage, 1mA current
• Product Color: Professional grey chassis
• Product Net Weight: 4kg (8.8 lbs)
• Product Dimensions (W×H×D): 105mm × 165mm × 249mm (4.1" × 6.5" × 9.8")
• Cooling: Forced air cooling with internal fan

Package Contents

• UNI-T UTP3315TFL-II Linear DC Power Supply
• International Standard Power Cord
• Test Output Line (banana plug cables)
• User Manual

Product Comparison

Frequently Asked Questions

What makes a linear power supply better for certain applications?

Linear power supplies like the UTP3315TFL-II provide significantly cleaner power with lower noise and ripple compared to switching power supplies. This clean power is essential for sensitive analog circuits, audio applications, and precision measurement systems where even small power fluctuations can affect performance or test results. The linear regulation technology eliminates the high-frequency switching noise that can interfere with sensitive electronics, making it ideal for RF applications, audio equipment development, and laboratory measurement scenarios where power supply artifacts could compromise results.

Can this power supply be used for electroplating or electrolysis?

Yes, the UTP3315TFL-II is well-suited for electroplating and electrolysis applications. The constant current mode allows you to set a precise current level that remains stable regardless of resistance changes in the electrochemical cell. The 5A maximum current is sufficient for many small to medium-scale electroplating and electrolysis projects, and the excellent current regulation ensures consistent plating quality. The ability to monitor both voltage and current simultaneously on the 4-digit display helps you track the progress of electrochemical processes and identify when cell resistance changes indicate completion or problems.

How does the current limiting protection work?

The current limiting protection automatically restricts the output current to your preset maximum value. When the load attempts to draw more current than your set limit, the power supply transitions from constant voltage (CV) to constant current (CC) mode, maintaining the current at your preset limit while reducing the voltage as needed. This protects both the power supply and your connected devices from overcurrent conditions. The visual indicators clearly show which mode is active, allowing you to immediately identify when a circuit is attempting to draw excessive current, which is valuable for troubleshooting short circuits or identifying faulty components.

Is this power supply suitable for powering automotive electronics during bench testing?

Yes, the UTP3315TFL-II is ideal for testing automotive electronics components. The 0-30V range covers typical 12V and 24V automotive systems with headroom for voltage drop testing, while the 5A capacity is sufficient for most control modules, sensors, fuel injectors, and smaller actuators. The clean power output ensures accurate testing conditions without interference from power supply noise, and the current limiting protection helps prevent damage when testing unknown or potentially faulty components. The ability to precisely adjust voltage also allows simulation of various battery charge states for comprehensive testing.

What is the difference between the UTP3313TFL-II and UTP3315TFL-II models?

The primary difference is the current capacity and power rating. The UTP3315TFL-II offers 0-5A output (compared to 0-3A in the UTP3313TFL-II) and 150W of power (versus 90W). Both models share the same excellent load regulation, ripple and noise specifications, and display resolution. The UTP3315TFL-II is more suitable for applications requiring greater current such as testing power-hungry devices, motor controllers, power amplifiers, or industrial systems. If your work consistently involves loads exceeding 2.5A or you need headroom for testing higher-current circuits, the UTP3315TFL-II provides better value despite the modest price difference.

What is the warranty period for the UNI-T UTP3315TFL-II?

The UTP3315TFL-II includes our Exclusive 3+2 Warranty program. You receive a standard 3-year warranty covering manufacturing defects and component failures under normal use conditions. Register your power supply on our website within 30 days of purchase to receive an additional 2 years of coverage at no cost, for a total of 5 years of protection. This comprehensive warranty ensures your investment in professional test equipment is protected, giving you confidence in your purchase decision.

Support and Warranty

UNI-T stands behind the UTP3315TFL-II with comprehensive technical support and our Exclusive 3+2 Warranty program (3 years standard, plus 2 additional years free with product registration). Our dedicated support team is available to assist with configuration questions, application support, and warranty service.

Professional Single-Channel Power for Demanding Applications

The UNI-T UTP3315TFL-II Linear DC Power Supply delivers exceptional precision, stability, and power capacity for professional electronics development, testing, and repair. With its enhanced 0-5A current output at 0-30V, ultra-low ripple and noise specifications (≤2mVrms), superior load regulation (CV≤0.01%+5mV), and high-resolution 4-digit display, it provides the clean, stable power essential for demanding electronics work. The 150W power capacity, automatic CV/CC mode switching, and compact professional design make the UTP3315TFL-II the ideal power solution for engineers, technicians, and laboratories who need higher current capability with laboratory-grade performance at an accessible price point.

Order Your UNI-T UTP3315TFL-II Today and Experience Professional-Grade High-Current Linear Power Supply Performance