# Comparison Between SDN 4-24-100P and SDN 4-24-100LP SolaHD Power Supply

**URL:** <https://forum.digikey.com/t/comparison-between-sdn-4-24-100p-and-sdn-4-24-100lp-solahd-power-supply/39550>\
**Category:** Power Supplies (off-board)\
**Tags:** power-supplies-external-internal-off-board, part-numbering, industrial-din-rail-power-supplies, faqs\
**Created:** [March 13, 2024, 6:15am UTC](https://forum.digikey.com/t/comparison-between-sdn-4-24-100p-and-sdn-4-24-100lp-solahd-power-supply/39550 "2024-03-13T06:15:10Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![aayushi.nainwal](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/aayushi.nainwal/32/62803_2.png) [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\
**Post date:** [March 13, 2024, 6:15am UTC](https://forum.digikey.com/t/comparison-between-sdn-4-24-100p-and-sdn-4-24-100lp-solahd-power-supply/39550/1 "2024-03-13T06:15:10Z")

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Would you like to know if you can replace your existing SDN 4-24-100P with [SDN 4-24-100LP](https://www.digikey.com/en/products/detail/solahd/SDN4-24-100LP/10072020?s=N4IgTCBcDaIMoBEByACALAWjJgjABjwBkAFEAXQF8g) ??

The [SolaHD](https://www.digikey.com/en/supplier-centers/solahd) [SDN-P](https://www.digikey.com/en/products/filter/industrial-din-rail-power-supplies/1064?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAG4B2aWehA9lANogDsAzAJwCsAHCALqEAOAFyggQAX3FA) DIN Rail power supply SDN 4-24-100P (24VDC at 4Amps/100Watts) is an **Obsolete** Part (Product is no longer manufactured). Yes, it can be replaced by [SDN 4-24-100LP](https://www.digikey.com/en/products/detail/solahd/SDN4-24-100LP/10072020?s=N4IgTCBcDaIMoBEByACALAWjJgjABjwBkAFEAXQF8g).

The **“LP”** on the newer version stands for Limited Power. It’s a Class II power supply rated (24VDC at 3.8Amps output/92 Watts). For most applications this should be sufficient; if you are running the old part above 3.8A and 92W as a normal mode of operation you may wish to upgrade to a higher power part for improved overhead margin in your system.

> **Applicable Part Number**
>
> [2106-SDN4-24-100LP-ND](https://www.digikey.com/en/products/detail/solahd/SDN4-24-100LP/10072020?s=N4IgTCBcDaIMoBEByACALAWjJgjABjwBkAFEAXQF8g)