# Broadcom HFBR-2521Z Versatile Link, wavelength 60nm/ 660nm?

**URL:** <https://forum.digikey.com/t/broadcom-hfbr-2521z-versatile-link-wavelength-60nm-660nm/5791>\
**Category:** Optoelectronics\
**Tags:** electromechanical, part-numbering, broadcom, optoelectronics, faqs\
**Created:** [March 6, 2020, 6:42am UTC](https://forum.digikey.com/t/broadcom-hfbr-2521z-versatile-link-wavelength-60nm-660nm/5791 "2020-03-06T06:42:27Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Barley\_Li](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/barley_li/32/558_2.png) [@Barley\_Li](https://forum.digikey.com/u/Barley_Li)\
**Post date:** [March 6, 2020, 6:42am UTC](https://forum.digikey.com/t/broadcom-hfbr-2521z-versatile-link-wavelength-60nm-660nm/5791/1 "2020-03-06T06:42:27Z")

</div>

When looking at [HFBR-2521Z](https://www.digikey.com/product-detail/en/broadcom-limited/HFBR-2521Z/516-2062-ND/1990460) Versatile Link, The Versatile Fiber Optic Connection from [Broadcom](https://www.digikey.com/en/supplier-centers/b/broadcom), one may be confused over its emission wavelength - 600nm or 660nm.

HFBR-2521Z is one of Broadcom’s HFBR-0500Z series products. In the datasheet, the description and feature are just the general information of the HFBR-0500Z series products in 6xx nanometers. But in the part number guide, it shows clearly that HFBR-2 **5** 21Z is a 600nm emission wavelength product, as shown below.

 ![image](https://global.discourse-cdn.com/digikey/original/2X/8/85876f43f85bfff0de4d3e4b5b00fc996f2da083.png)

> **Applicable Part Numbers**
>
> HFBR-2521ETZ HFBR-2522ETZ HFBR-2526ETZ  
> HFBR-2531ETZ HFBR-2541ETZ HFBR-2542ETZ
> 
> HFBR-1521ETZ HFBR-1522ETZ HFBR-1527ETZ  
> HFBR-1531ETZ HFBR-1541ETZ HFBR-1542ETZ
> 
> 516-2303-5-ND 516-2305-5-ND 516-2306-5-ND  
> 516-3526-ND 516-3629-ND 516-4079-ND
> 
> 516-2301-5-ND 516-2302-5-ND 516-2304-5-ND  
> 516-3524-ND 516-3624-ND 516-4077-ND