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K7803-500R3 MORNSUN K7803-500R3 is a linear regulator replacement DC DC converter delivering 3.3V at 500mA with 86% efficiency in a through-hole 3-SIP module.
Mfr Part #:

K7803-500R3

Available from 2 distributors
Mfr Name: Morning Star Industrial
Morning Star Industrial
MORNSUN K7803-500R3 is a linear regulator replacement DC DC converter delivering 3.3V at 500mA with 86% efficiency in a through-hole 3-SIP module.
Total Stock: 1,370 pcs
$ Price Range: $1.09

K7803-500R3 Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,236 pcs
1236 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
134 pcs
134 pcs On Request 1 On Request On Request On Request On Request On Request

K7803-500R3 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Applications
Approval Agency
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Efficiency
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Height
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Mounting Type
Number of Outputs
Operating Temperature
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K7803-500R3 Description

Short technical summary and product information.

The MORNSUN K7803-500R3 is a DC DC converter designed as a linear regulator replacement, providing a regulated 3.3V output from an input voltage as low as 4.75V. It delivers up to 500mA of output current with a power rating of 1.7W and an efficiency of 86%, reducing heat dissipation compared to linear regulators.

 

This converter features short circuit protection (SCP) and is suitable for ITE (commercial) applications. It operates over a temperature range of -40°C to 85°C with derating. The component is housed in a compact 3-SIP through-hole module measuring 11.6mm x 7.6mm x 10.2mm, making it easy to integrate into board-level designs.

 

The K7803-500R3 carries approvals from CB, CE, and cURus agencies. It is intended for commercial electronic equipment where efficient step-down conversion from a higher DC voltage to 3.3V is required.

K7803-500R3 Quick Information

Product Type: DC DC Converter
Series: K78xx
Canonical Name: MORNSUN K7803-500R3 DC DC Converter, 3.3V Output, 500mA, 1.7W
Subcategory: Linear Regulator Replacement

K7803-500R3 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

K7803-500R3 Estimated Pricing

Qty Low High
43+ $1.09 $1.09

Estimated market price range - modelled values for guidance only, not live distributor offers.

K7803-500R3 Features

  • Linear regulator replacement DC DC converter.
  • Delivers 3.3V output at 500mA current.
  • 86% typical efficiency reduces heat loss.
  • Short circuit protection (SCP) included.
  • Through-hole 3-SIP module for easy mounting.

K7803-500R3 Applications

  • Used in commercial ITE (Information Technology Equipment).
  • Ideal for point-of-load power conversion.
  • Suitable for industrial control systems.
  • Replaces linear regulators for higher efficiency.

K7803-500R3 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the output voltage of the K7803-500R3?

The output voltage is 3.3V.

What is the output current rating?

The output current is 500mA.

What is the efficiency of this converter?

The efficiency is 86%.

What package does the K7803-500R3 come in?

It comes in a 3-SIP through-hole module.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C with derating.

Is the K7803-500R3 RoHS compliant?

RoHS status is listed as RoHS3 Compliant but is unverified.

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