Tag Archives: AC/DC

Replacing Your Power Supply from High Tariff Sources

Tariffs are a fact of life and will be for the near future. If you are designing a new product or have a current product and need to replace your power converter, this article will help you.

  • Learn how TAA sourcing will mitigate the risk of fluctuating tariffs from eating at your bottom line.
  • Show you how to find a replacement power supply/ power converter for your application
  • Explain the additional considerations needed when you are qualifying a new power converting product for your design. 

What is TAA Compliance and How Can it Help Me?

TAA stands for the Trade Agreements Act, a U.S. law that was created to make sure that products the U.S. government buys come from countries the U.S. has trade agreements.

What is “TAA Compliance”?

When a product is TAA compliant, it means:

  • It is made or substantially transformed (significantly changed) in:

    • The United States, or

    • A country that the U.S. has a trade agreement with (like Japan, Taiwan, or South Korea).

Doesn’t the US have a Trade Agreement with China?

This can be a point of confusion. While the United States and China engage in extensive trade, China is not considered a “designated country” under the Trade Agreements Act (TAA). This means that products made in China are generally not TAA compliant and cannot be sold to the U.S. federal government under contracts that require TAA compliance.

In addition, Chinese products have been the target of increasing tariffs and excluded from sales to the US Federal Government. In 2025, the US government has made a deliberate effort to reduce the amount of Chinese imports into the US, which is expected to continue in the near future. 

But the US Government Plans on Adding Tariffs on All of its Trading Partners, why Should I Consider TAA Sources?

The best strategy is to source from a supplier that will provide the most stable pricing. Luckily, all of ETA-USA’s products are TAA Compliant and not subject tariffs directed at China. 

How do I Select the right Power Supply?

You can read the post Selecting the Right Power Supply for more in depth information, but to explain briefly. 

  1. Identify your power conversion need and power consumption.
    • Do you need an AC/DC converter? ETA-USA’s line of AC/DC switching power supplies accept universal input and can be used worldwide
    • Do you need a DC/DC converter? ETA-USA has a line of wide input DC/DC converters to save you the time of replacing parts that accept different input voltages. 
    • What about the Watts? The rated wattage  on a power supply  is calculated by multiplying the output voltage (Volts, typically DC voltage) by the output current (Amps). You will want to make sure the voltage matches as close as possible, but you can always oversize the current rating without damaging your product, the job of the  power supply will deliver only what your product demands.
  2. Check the fit of your replacement
    • Switching power supplies come in a variety of forms, but this can easily me solved:
      • ETA-USA has recently introduced a line of power dense AC/DC converters that have a smaller footprint than most products on the market.
      • See PFT65 , PFT150 , and PFT300
      • ETA-USA’s technical team can help you design an adapter plate to fit your new supply in your old chassis.
  3. Check the Connection between the power supply and  your system
    • Most of ETA-USA’s AC/DC and DC/DC power supplies interface with standard terminal rings or headers.
    • For AC/DC external adapters, ETA-USA can accommodate a modification to the DC output cable assembly with low MOQ (30 pcs production, 1-2 evaluation units) without significant impact on price of safety certifications
  4. What type of third party safety or standards do I need to adhere to?
    • Unless you have a product that will be used in a medical application, you just need a power supply  that has ITE certification that meets the harmonized standard of IEC62368-1, which can be found on many of ETA-USA products. 
      • Different regions may require that the certifying body be specific. ETA-USA products are certified for North and South America, Europe, and Japan. 
    • If your product is being used in a medical application, you will need 60601 certification. To learn more, read the blog post about ITE vs Medical Grade Power Supplies.
    • If you are replacing a low voltage, low power DC-DC  converter, you will likely not need to be concerned about third party certification. 

It may be daunting, but ETA-USA is here to help. Contact a representative with your switching power supply requirements today! 

Military Grade Ingress Protected AC/DC Power Supplies – LPM Series

LPM Series, Low Profile, IP65+, Mil-Grade AC/DC Power Supply

ETA-USA has expanded its  line of conduction cooled military grade AC/DC power supplies to provide a low profile solution with improved thermal conduction, 1.80″ height, and multiple mounting locations for heatsinking along 4 planes. Designed rugged and harsh environments and MIL-S 901 D Shock.  Great for indoor and outdoor shipboard applications, covered or exposed ground systems, and airborne applications up to 15,000ft

Units can be built in as little as 6 weeks.

LPM500 Series

  • Input: 95~264 VAC in, 50/60/400 Hz (47~440Hz) operation.
  • In-rush current limited
  • Available voltages: 12, 24, 28, 48
  • Slim profile, 1.8″ height 
  • Aluminum Enclosure with chromate finish for corrosion resistance and low resistance bonding
  • Conformal coated internal circuitry
  • Mounting: 0.20″ diameter thru holes  along the perimeter of the base for secure mounting and thermal conductivity. Threaded M5 inserts for additional mounting or heatsink expansion
  • >20 msec Hold Up time at full load, 115VAC input
  • DC  Output Regulation: Less than 10 mV voltage drift from 0 to full load (measured at output terminal)
  • Ripple and Noise: <1% peak-to peak

LPM650 Series

  • Input: 95~264 VAC in, 50/60/400 Hz (47~440Hz) operation.
  • In-rush current limited
  • Available voltages: 12, 28, 48
  • Current Sharing (Droop) without additional wiring, up to 5 units in parallel proving 630W each (3,150W total)
  • Slim profile, 1.8″ height 
  • Aluminum Enclosure with chromate finish for corrosion resistance and low resistance bonding
  • Conformal coated internal circuitry
  • Mounting: 0.20″ diameter thru holes  along the perimeter of the base for secure mounting and thermal conductivity. Threaded M5 inserts for additional mounting or heatsink expansion
  • >20 msec Hold Up time at full load, 115VAC input
  • Ripple and Noise: <1% peak-to peak

LPM1100 Series

  • Input: 95~265 VAC in, 50/60/400 Hz (47~440Hz) operation.
  • In-rush current limited
  • Available voltages: 12, 24, 28, 48, 55
  • Slim profile, 1.8″ height 
  • Aluminum Enclosure with chromate finish for corrosion resistance and low resistance bonding
  • Conformal coated internal circuitry
  • Mounting: 0.20″ diameter thru holes  along the perimeter of the base for secure mounting and thermal conductivity. Threaded M5 inserts for additional mounting or heatsink expansion
  • >20 msec Hold Up time at full load, 115VAC input
  • DC  Output Regulation: Less than 10 mV voltage drift from 0 to full load (measured at output terminal)
  • Ripple and Noise: <1% peak-to peak
  • Optional Remote on/off
  • Optional I2C reporting functions (Vout, Iout, internal temp and humidity)

Mil-Standard Compliances (Without External Circuitry)

  • EMI: Mil-Std 461, CE101, CE102, RE102
  • Susceptibility: CS114, CS115
  • Input Transient Mil-Std 704
  • Power Factor: Mil-Std 1399
  • Environmental: Mil-Std 810, Mil-S-901 D, IP65 standard, up to IP67 possible. 

Available Modifications

  • Non-standard Voltages (LPM500, LPM1100, Inquire with ETA-USA Representative)
  • Hard Anodized Enclosure with EMI Grounding
  • Powder Coat Paint
  • External Voltage Trim (10%, 20%)
  • User Selectable I/O Interface

Contact ETA-USA for Product Availability and CAD Files. 

See Our Full Line of Military and Aviation Power Supplies 

Government Customers- See Our Capability Statement

Customizing Your Power Solutions with ETA-USA

Endless Custom Power Supply Options

Thirty years of industry experience , ETA-USA has seen a plethora of unique requirements that is has engineered and can build upon to provide its customers solutions as specialized as their applications.

All of of products are TAA compliant. Rackmount, Military, Avionics, and IP65+ Rated products are made in the USA. CAD and STEP models available upon request.

Contact an ETA-USA Representative for Details

Customized AC/DC External Adapters, TAA Compliant.

External Adapters
Customizable AC/DC External Adapters

ETA-USA’s ITE and medical grade external power adapters can be customized to power your application requirements with low minimum order quantities and 1-2 piece evaluation units available to purchase.

  • 25W~400W ITE and Medical Grade Products
  • Single and Multiple Outputs
  • Customizable AC Inlets (select Models) DC out connector and Cables.
  • DOE VI and DOE VI Compliance
  • TAA Compliant
  • IP42
  • Customer Name and Part Number Can Be Added at no Additional Charge
  • UL, UK, CE, & TUV Safety Certified
  • US, UK, EU, & JP AC Cords Can be Ordered & Packaged with Product

 

Rackmount AC/DC & DC/DC Power Systems Made in the USA

AC/DC Custom Rackmount Power System

ETA-USA designed and built its first Rackmount for Alstom MUX Train Control system in 1998, which have been in use and operating for over 25 years without requiring service. ETA-USA can quickly deliver a robust and reliable rackmount power systems in as little as 8 weeks after order.

  • 19 Inch Rackmount Units at 1U, 2U, 3U, and 4U sizes
  • Up to 8 Separate & Isolated Outputs or 4 Outputs with Redundancy
  • LED Display with Voltage & Current Reading
  • Alarm Signals & Power Good Indicator
  • I2C Reporting Options Available
  • Industrial & Military Grade Options Available
  • DC/DC Models Available

Military & Defense

Mil-Grade AC/DC & DC/DC

ETA-USA is ITAR registered and all of its Mil-grade and Defense compliant power supplies are designed and built in the USA. ETA-USA maintains an NIST SP800 compliant

  • Conduction Cooled Single Output AC/DC Power Supplies form 500~2,000W, 50/60/400Hz Input Frequency
  • Convection Cooled Single and Multiple Output AC/DC Power Systems up to 6,000W
  • Single and 3 Phase Options
  • Convection and Conduction Cooled DC/DC Models, Meets Mil-Std 1279
  • Mil-Std 461. 810, & 1399 compliant. Mil-Std 910 enclosure Designs Available.
  • User Selectable D38999 or 5015 Connectors available.
  • Multiple, Isolated Output Voltages Available.
  • Anodized, Chromate, or Powder Coat finishes
  • Low MOQ
  • High Altitude Models Coming Soon

Semi-Custom Outdoor and Ingress Protection

IP65 for Explosive Environments

ETA-USA can package its designs into an IP65+ Rated enclosure to be used in rugged and outdoor environments.

  • Selection of Proven designs for AC/DC & DC/DC requirements form 300~1,400W
  • Heatsink Design Capability for High Wattage, Environmentally Sealed
  • IECeX for Explosive Environment Model Line Available
  • View Semi-Custom Page for Baseline Models

Custom Design Capabilities

  • Rapid Design to Prototype Cycle
  • Non-Standard Input & Output Voltages, Isolation Voltages
  • Low and High Volume manufacturing
  • CAD models available
  • EMI & Temperature Testing
  • Engineering experience to meet Commercial, Industrial,  Military, and Aviation standards
  • ISO 9001 2015 Certified, AS9100 Compliant
  • Engineering and Technical Support to Obtain 3rd Party Certification

MILITARY GRADE PRODUCT – 2,000W Conduction Cooled AC/DC Power Supply

CH-M2000 Series- Military Grade Conduction Cooled AC/DC Power Supply

ETA-USA line of conduction cooled military grade AC/DC power supplies provide the single solution to power your military & defense application. Customers may use the standard input & output connector or request their own. Meets Mil-std 461G ground, airborne, and ship-board systems and 1399. Units can be built in as little as 5 weeks.

Click on Image for Datasheet

Features

  • Input: 95~264 VAC in, 50/60/400 Hz (47~440Hz) operation
  • Available voltages: 12, 24, 28, 48
  • In-rush current limited
  • 8″ x 14″ footprint (excluding connectors)
  • Aluminum Enclosure with chromate finish for corrosion resistance and low resistance bonding
  • Conformal coated internal circuitry
  • Mounting: Two rows of five, 0.20″ diameter thru holes for secure mounting and thermal conductivity
  • >20 msec Hold Up time at full load, 115VAC input, >50 msec at 220 VACin.
  • DC  Output Regulation: Less than 10 mV voltage drift from 0 to full load (measured at output terminal)
  • Ripple and Noise: <1% peak-to peak
  • Constant Current OCP Protection
  • Weight: 9.5 lbs (Standard Unit)

Mil-Standard Compliances (Without External Circuitry)

  • EMI: Mil-Std 461, CE101, CE102, RE102, RE103
  • Susceptibility: CS114, CS115
  • Input Transient Mil-Std 704
  • Surge protection: Mil-Std 1275
  • Power Factor: Mil-Std 1399
  • Environmental: Mil-Std 810

Available Modifications

  • Hard Anodized Enclosure with EMI Grounding
  • Mil-Std 901 Shock Compliant Enclosure (Product Dimensions Subject to Change)
  • IP66 Enclosure
  • Customized Input and Output Connector
  • External Voltage Trim (10%, 20%)
  • Remote On/Off
  • I2C Status Reporting (Output Voltage, Output Current, Internal Temperature)
  • Three Phase Wye or Delta Input (Contact ETA-USA Representative for Details)

Contact ETA-USA for Product Availability and CAD Files. 

See Our Full Line of Military and Aviation Power Supplies 

Government Customers- See Our Capability Statement

 

 

MILITARY GRADE PRODUCT – 1,000W Conduction Cooled AC/DC Power Supply

CH-M1000 Series- Military Grade Conduction Cooled AC/DC Power Supply

ETA-USA line of conduction cooled military grade AC/DC power supplies provide the single solution to power you Mil-standard Application. Customers may use the standard input & output connector or request their own. Designed for Mil-Std 461 Ground, Airborne, and Ship-board applications. Units can be built in as little as 5 weeks.

Link to CH-M1000 Datasheet
Click Image for Datasheet

 

Features

  • Input: 95~264 VAC in, 50/60/400 Hz (47~440Hz) operation.
  • Available voltages: 12, 24, 28, 48
  • In-rush current limited
  • Compact 7.5″ x 11″ footprint (excluding connectors)
  • Aluminum Enclosure with chromate finish for corrosion resistance and low resistance bonding
  • Conformal coated internal circuitry
  • Mounting: Two rows of five, 0.20″ diameter thru holes for secure mounting and thermal conductivity
  • >20 msec Hold Up time at full load, 115VAC input, >50 msec at 220 VACin.
  • DC  Output Regulation: Less than 10 mV voltage drift from 0 to full load (measured at output terminal)
  • Ripple and Noise: <1% peak-to peak
  • Constant Current OCP Protection
  • Weight: 5.5 lbs (Standard Unit)

Mil-Standard Compliances (Without External Circuitry)

  • EMI: Mil-Std 461, CE101, CE102, RE102, RE103
  • Susceptibility: CS114, CS115
  • Input Transient Mil-Std 704
  • Surge protection: Mil-Std 1275
  • Power Factor: Mil-Std 1399
  • Environmental: Mil-Std 810

Available Modifications

  • Non-standard Voltages from 5V~55 VDC (Contact ETA-USA Representative for Details)
  • Secondary isolated output voltages: 5, 12, 15, 24; 10W
  • Hard Anodized Enclosure with EMI Grounding
  • Mil-Std 901 Shock Compliant Enclosure (Product Dimensions Subject to Change)
  • IP66 Enclosure (Product Dimensions Subject to Change)
  • Customized Input and Output Connector
  • External Voltage Trim (10%, 20%)
  • Remote On/Off
  • Remote Sense
  • I2C Status Reporting (Output Voltage, Output Current, Internal Temperature)
  • Three Phase Wye or Delta Input (Contact ETA-USA Representative for Details)

Contact ETA-USA for Product Availability and CAD Files. 

See Our Full Line of Military and Aviation Power Supplies