UES140AZ-SPC / UES140BZ-SPC | 5V–28V 140W Medical Desktop Power Adapter

UES140AZ-SPC / UES140BZ-SPC

A GaN desktop power supply for medical equipment using USB Power Delivery, available with a Type-C output port or a fixed output cable.

USB PD 3.1 support for power requirements beyond 100W
Type-C port or fixed-cable output
Medical isolation with low touch leakage current
Class I and Class II AC inlet configurations
Low standby consumption for mains-connected equipment

Models & Ratings

Both models support the profiles below. The connected equipment requests its operating voltage through PD negotiation. Full 140W output is available at 28V/5A.

Model Number	Power(W)	Input Voltage Range(VAC)	Output Voltage(VDC)	Output Current(A)	Operating Temperature Range(°C)	Safety Standards
UES140AZ-SPC / UES140BZ-SPC	15	80–264	5	0.01–3.00	0 to +40	CB,UL,TUV
UES140AZ-SPC / UES140BZ-SPC	27	80–264	9	0.01–3.00	0 to +40	CB,UL,TUV
UES140AZ-SPC / UES140BZ-SPC	36	80–264	12	0.01–3.00	0 to +40	CB,UL,TUV
UES140AZ-SPC / UES140BZ-SPC	45	80–264	15	0.01–3.00	0 to +40	CB,UL,TUV
UES140AZ-SPC / UES140BZ-SPC	100	80–264	20	0.01–5.00	0 to +40	CB,UL,TUV
UES140AZ-SPC / UES140BZ-SPC	140	80–264	28	0.01–5.00	0 to +40	CB,UL,TUV

Across the listed profiles: voltage tolerance ±5%, line regulation ±1%, load regulation ±5%, maximum ripple and noise 300mVp-p, and start-up delay ≤3 seconds.

Mechanical Details

Choose the output arrangement to suit the equipment package. The UES140AZ-SPC has a Type-C output port for a separate cable. The UES140BZ-SPC has a fixed output cable.

The housing measures 121 × 66 × 32mm. Allow room for the AC connector and output connection when checking its position on a trolley, shelf or work surface. The drawings below show the housing dimensions, output arrangements and AC inlet options.

Input Specifications

The 80–264VAC input covers common nominal 100–240VAC mains supplies. Select the AC inlet to match the required installation class, then specify the mains cord for the destination market.

Input Characteristic	Specification
Input voltage range	80–264VAC
Frequency range	47–63Hz
Input current	2.5A at 90VAC
Standby power	≤0.15W

AC Inlet Options

C8 / Polarized C8 — Class II; replace Z with 1

C6 — Class I; replace Z with 2

C14 — Class I; replace Z with 3

C18 — Class II; replace Z with 4

Environmental & General

The operating range is 0°C to 40°C. Check the temperature where the adapter will actually sit during use, particularly if equipment or a compartment restricts the space around it.

Use that same position during sample evaluation. A result from an open workbench may not represent the conditions inside the finished equipment arrangement.

Characteristic	Specification
Operating temperature	0°C to +40°C
Storage temperature	−40°C to +80°C
Operating humidity	10–90% RH, non-condensing
Storage humidity	5–90% RH
Operating altitude	Up to 5,000m
Enclosure rating	IP42
Weight	340g
Energy efficiency	Level VI
Average efficiency — 5V	82.00%
Average efficiency — 9V	86.80%
Average efficiency — 12V	87.50%
Average efficiency — 15V	88.00%
Average efficiency — 20V	90.00%
Average efficiency — 28V	92.00%
MTBF	>100,000 hours at 25°C

Protection

Overload protection recovers automatically. A short circuit causes the adapter to trip and attempt a restart.

If the equipment repeatedly starts and stops, note the operating mode and load when it happens. Repeated restarting needs investigation rather than being treated as normal operation.

Protection Function	Specification	Recovery
Overload	105–140% of rated output power	Automatic recovery
Short circuit	Trip and restart, hiccup mode	Restart attempts while the fault remains

Safety Approvals

The specification lists medical safety standards for general medical equipment and home healthcare applications. Review the documents for the chosen model and AC inlet configuration before finalizing the supply for your project.

Both models provide 2 MOPP input-to-output isolation, with a 4,000VAC dielectric withstand rating. Touch leakage current is specified at ≤100µA at 264VAC, and input-to-output insulation resistance is 10MΩ at 500VDC.

IEC60601-1

View Certificate

TÜV

EN60601-1

View Certificate

EMC

Include the intended output connection in the equipment’s EMC test setup. For AZ, use the selected USB-C cable. For BZ, retain the fixed lead and its intended routing.

Keep a record of the connected equipment, cable position and operating mode. These details help your team reproduce a result if a problem appears during testing.

Item	Medical Specification
Conducted emissions	IEC/EN 60601-1-2, CISPR 11
Radiated emissions	IEC/EN 60601-1-2, CISPR 11
Harmonic currents	EN 61000-3-2, Class A
Voltage flicker	EN 61000-3-3
Immunity	IEC/EN 60601-1-2

Immunity Test	Standard	Specified Level
ESD	IEC 61000-4-2	±15kV air, ±8kV contact
Radiated immunity	IEC 61000-4-3	3V/m
EFT/Burst	IEC 61000-4-4	±2kV AC port, ±1kV signal ports
Surge	IEC 61000-4-5	±1kV line-to-neutral; ±1kV line/neutral-to-ground
Conducted immunity	IEC 61000-4-6	3Vrms, 6Vrms; 0.15–80MHz
Magnetic field	IEC 61000-4-8	30A/m
Dips and interruptions	IEC 61000-4-11	0%, 70%, 0% of UT

Refer to the applicable test report for frequency ranges, durations and test conditions.

Common Applications

These models are options to evaluate for medical equipment designed to accept USB-C PD power. Check the required input profile and total operating demand, including battery charging where applicable, before selecting the adapter.

Explore Medical Power Supply Applications →

Frequently Asked Questions

The meter only shows 60W. Should we change the adapter?

We wouldn’t change it on that reading alone. Is the equipment working normally, or is it struggling to run or charge?

If everything works, it may simply need 60W at the time. If it cannot get enough power, keep the meter’s voltage and current readings. Those tell us more than wattage alone and help establish whether the device or connection is limiting the input.

Most of the time our device is asleep. Do we really need a large adapter?

Keep enough capacity for when it wakes up and does its job. Choosing from the standby load could leave the supply too small during operation.

For this model, also check how little current the device draws while asleep. The listed range starts at 0.01A; anything below that needs checking. The adapter’s ≤0.15W standby figure won’t tell you what the complete device consumes.

Can we order it with a C14 inlet?

Yes. Specify C14 on the enquiry; it is the Class I configuration with Z replaced by 3. C6 is also available for Class I. C8 and C18 are Class II.

If your drawing calls for DC negative to be connected to earth, include that drawing. That connection isn’t established by choosing C14, and it isn’t shown in the supplied specification.

We already have 100W cables in stock. Can we use those with AZ?

They are not the cables to select for full 140W operation. Even if they are marked 5A, that does not confirm they support the higher-voltage EPR connection.

For the 28V/5A output, specify a suitable electronically marked EPR cable. Have purchasing keep the approved cable part number on the order. “5A USB-C cable” leaves room for the wrong cable to be supplied.

Can this replace our existing 140W, 19.5V adapter?

We wouldn’t offer it as a straight replacement. Your existing supply provides its power at 19.5V; this one reaches 140W at 28V. Its 20V output is limited to 100W.

Keep the equipment’s required voltage on the replacement enquiry. Unless its input was designed to accept the higher PD profile, another medical supply would be a better starting point.

Related Models

If this series does not match your equipment’s input requirements, compare the alternatives below before ordering a sample. Consider the required output profile, AC connection and cable arrangement together, particularly when replacing an adapter in an existing equipment package.

UED120-SPA | 19V-24V 120W Medical Desktop Adapter

UES120DZ-SPA | 11V-54V 120W Medical Desktop Adapter

UES100DZ-SPA | 12V-24V 100W Medical Desktop Adapter

Medical External Power Supply UES180DZ-SPA

Related Resources

Moving to a higher-power PD supply involves more than choosing a larger wattage. These articles provide background on medical USB-C power, patient-protection isolation and the safety documents to review during equipment development.

Medical grade USB-C power supply

An introduction to USB-C power in medical equipment, including connection formats, power delivery and medical-use considerations. Useful background when defining the external power arrangement for a new device.

What does 2 x MOPP mean for a medical power supply?

Both models list 2 MOPP input-to-output isolation. This article explains the term and its role in patient protection, providing context for the isolation requirements in your project specification.

IEC 60601-1 Safety Standards Explained for Power Supply

Review the relationship between equipment classification, insulation and leakage current before comparing approval documents. This overview helps prepare the discussion with your certification engineer and power supply supplier.

Request Technical Support & Pricing

Our engineering team provides comprehensive support for this power supply series. Whether you need standard models, custom DC output specifications, or specific medical compliance assistance, we ensure your requirements are met with precision and speed.

✔ 2 MOPP & IEC 60601-1 Certification Support

✔ Custom DC Connectors & Cable Options

✔ Free Engineering Samples for Evaluation

✔ Detailed Technical Response within 24h

Name *

Email *

Target Application Device

Project Details / Requirements *