× Due to the severe weather in Wareham, our phone lines are temporarily out of service today. We're here to assist you though! Please direct all enquiries through our online contact forms, email us directly at sales@relec.co.uk, or use our live chat feature. All of our office-based staff will not have access to emails so some queries may be picked up on Monday. Our remote staff are still operational. We apologise for any inconvenience this may cause and appreciate your understanding. Stay dry!
Power > K78_JT-500R3-LB Series

K78_JT-500R3-LB Series

Input: 4.75-36Vdc
Outputs: 3V3 to 15Vdc
Power: 0.75-7.5 Watt
Tamb: -40 to +85°C
Dims: 12 x 12 x 4.5mm (SMD)

Make an enquiry
Request a sample

Make an Enquiry

  • This field is for validation purposes and should be left unchanged.

Request a Sample

  • This field is for validation purposes and should be left unchanged.
have a question? Contact us now


The Mornsun K78xxJT-500R3-LB series are high-efficiency switching regulators that are ideal for space constrained mobile applications. There is no need for any heat sinks, even if operating at +85°C.

K7803JT-500R3-LB4.75 - 36Vdc3V31.5W
K7805JT-500R3-LB6.5 - 36Vdc5V3W
K7809JT-500R3-LB12 - 36Vdc9V4.5W
K7812JT-500R3-LB15 - 36Vdc12V6W
K7815JT-500R3-LB19 - 36Vdc15V7.5W


Click on the link below for an instant download.

  • K78_JT-500R3-LB datasheet

We would love to know more about the problem you are trying to solve

Our experts are on hand to help you find the best solution!

LET’S MAKE THIS EASY. CALL 01929 555 700

why choose relec?
  • Faster

    Our aim is to get back to you with an initial response within the hour.

  • Attention to detail

    We pride ourselves on getting you the right product, at the right price and on time.

  • New ideas

    We are constantly looking for latest technology and products for your applications.

  • Beyond standard

    It’s not just about the product.  Our service goes way beyond the norm.

  • Easy

    We want to make your life as simple as it can be. Call us to find out what we can offer.

sign up for our newsletter

Enter your email address below

  • This field is for validation purposes and should be left unchanged.