Mfr Part #:

HD28-4-A+

Mfr Name: SL Power Electronics Manufacture of Condor/Ault Brands

The SL Power Electronics HD28-4-A+ is a 112W AC/DC converter with a 28V output and 4A current rating. It features adjustable output, remote sense, and universal input capabilities.

Stock on Request

HD28-4-A+ Description

Short technical summary and product information.

The SL Power Electronics HD28-4-A+ is a linear AC/DC converter designed for ITE (Commercial) applications. It provides a single 28V output at 4A, delivering up to 112W of power.

Key electrical specifications include a universal input voltage range of 100-240 VAC, 45% efficiency, and line/load regulation of ±0.05%. The converter offers features such as adjustable output, remote sense, and automatic current limit/foldback for short circuit protection. It operates within a temperature range of 0°C to 70°C with derating.

This unit is designed for chassis mounting and meets various approval agency standards including CE, cURus, and TUV. Environmental compliance includes RoHS3 compliance and an MSL 1 rating. The dimensions are 228.6mm x 124.0mm x 69.9mm.

Additional features include built-in overvoltage protection on 5V models and vibration/shock resistance per Mil-Std-810D.

HD28-4-A+ Quick Information

Product Type: AC DC Converter

Canonical Name: SL Power Electronics Manufacture of Condor/Ault Brands HD28-4-A+ AC/DC Converter

Subcategory: AC DC Converters

HD28-4-A+ Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

HD28-4-A+ Features

112W total power output.
28V DC output voltage.
4A maximum output current.
Universal AC input range.
Chassis mountable design.

HD28-4-A+ Applications

Suitable for ITE commercial applications.
Designed for industrial equipment.
Used in various electronic systems.
Provides stable DC power output.

HD28-4-A+ FAQs

7 frequently asked questions generated from this part’s specifications.

What is the output voltage of the HD28-4-A+?

28V.

What is the output current of the HD28-4-A+?

4 A.

What is the input voltage range?

100 to 240 VAC.

What is the operating temperature range?

0°C to 70°C with derating.

Is the converter RoHS compliant?

RoHS3 Compliant.

What protection features are included?

Automatic current limit/foldback for short circuit protection. Overvoltage protection is built-in on 5V models and optional on others.

Does the converter have remote sense?

Yes, provided on all models with open sense lead protection.

Category	AC DC Converters
Manufacturer Name	SL Power Electronics Manufacture of Condor/Ault Brands
Applications	ITE (Commercial)
Approval Agency	CE, cURus, TUV
Current	4 A
Efficiency	45%
Features	Adjustable Output, Remote Sense, Universal Input
Mounting Type	Chassis Mount
Number of Outputs	1
Operating Temperature	0°C ~ 70°C (With Derating)
Output Voltage	28V
Power (Watts)	112W
SVHC Present	Not Present
Stability	±0.05% for 24 hours after warmup
Storage Temperature	-40 to +85 °C
Temperature Coefficient	±0.01%/°C maximum
Type	Linear
Voltage	100 ~ 240 VAC