# Amphenol ICC (FCI) D-Subminiature Delta D and LD differences

**URL:** <https://forum.digikey.com/t/amphenol-icc-fci-d-subminiature-delta-d-and-ld-differences/12232>\
**Category:** D-Sub , D-Shaped Connectors\
**Tags:** part-numbering, amphenol-icc, interconnect, d-sub-d-shaped-connectors, part-comparison\
**Created:** [February 22, 2021, 10:00am UTC](https://forum.digikey.com/t/amphenol-icc-fci-d-subminiature-delta-d-and-ld-differences/12232 "2021-02-22T10:00:45Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![dany\_haikin](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/dany_haikin/32/13589_2.png) [@dany\_haikin](https://forum.digikey.com/u/dany_haikin)\
**Post date:** [February 22, 2021, 10:00am UTC](https://forum.digikey.com/t/amphenol-icc-fci-d-subminiature-delta-d-and-ld-differences/12232/1 "2021-02-22T10:00:45Z")

</div>

Looking for [Amphenol ICC (FCI)](https://www.digikey.com/en/supplier-centers/amphenol-icc) D-Subminiature connectors from “Delta D” series like, for example, **D09S24A4GX00LF** ([609-5872-ND](https://www.digikey.com/en/products/detail/amphenol-icc-fci/D09S24A4GX00LF/1537266?s=N4IgTCBcDaIGwAYCcBaArADgOxhQOQBEQBdAXyA)) or **D15S24A4GV00LF** ([609-1497-ND](https://www.digikey.com/en/products/detail/amphenol-icc-fci/D15S24A4GV00LF/1001811)) one can find additional p/n with “ **L** ” prefix:

 ![image](https://global.discourse-cdn.com/digikey/original/2X/a/a94343724bebfd685b47797110207f999cd7e52c.png)

 ![image](https://global.discourse-cdn.com/digikey/original/2X/3/35749a3e8ed4d85afe7d4592deeea210bdea442f.png)

The same result can come up using “ **Findchips** ” website, for example, looking for the p/n “ **D09S24A4GV00LF** ” gives 2 options like below:

 ![image](https://global.discourse-cdn.com/digikey/original/2X/e/e6ece128a6c5c7babd0eba406ffe9049745b1f0c.png)

So what does this “ **L** ” prefix (actually it is “ **LD** ”) mean and what are the differences between these 2 p/n’s

The parts starting with “ **D** ” are standard D-Subminiature “**[Delta D](https://www.digikey.com/en/products/filter/d-sub-connectors/439?s=N4IgjCBcoBw1oDGUBmBDANgZwKYBoQB7KAbRACYBOAVmoGZ4DKB2asOkAsWhjrlgCyVynCnWoCADADYQAXQIAHAC5QQAZWUAnAJYA7AOYgAvvxiUEIZJHTZ8RUiEnylqyBu36jpkAFoBlta2uATEkGRg5OTMAQogKmomxsZAA)**” series connectors, while the parts having “ **LD** ” prefix are D-Subminiature “**[Economy range](https://www.digikey.com/en/products/filter/d-sub-connectors/439?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAPZQDaIATAGxxUgC6hADgC5QggC%2B3QA)**” series connectors

The “LD - Economy range” connectors are less robust and are targeted for commercial applications and are almost twice cheaper comparing to standard D-Subminiature “ **Delta D** ” series

```
           LD series Delta D series

```

 ![image](https://global.discourse-cdn.com/digikey/original/2X/f/f10b768aa308f681592a718c8291cb067dd68d85.png)

From the data sheets of the "[Delta D" series](https://cdn.amphenol-icc.com/media/wysiwyg/files/documentation/datasheet/inputoutput/io_dsub_deltad.pdf) and "[LD" series](https://cdn.amphenol-icc.com/media/wysiwyg/files/documentation/datasheet/inputoutput/io_dsub_economy.pdf), the following major differences can be noted:

 ![image](https://global.discourse-cdn.com/digikey/original/2X/7/77233dce14860a11cea0674113c87775e6576a2d.png)

 ![image](https://global.discourse-cdn.com/digikey/original/2X/2/212d7f2eab8b264ba49299666c993b6998490bec.png)