Forum - Recent Threads

Red LED occasionally not working on 1312020030000 chip LED

DarienRodrigues — Mon, 05 Jan 2026 17:04:46 GMT

We have the WL-ICLED 1312020030000 chip LED powered from a 3V source. The red, green and blue LEDs independently work most of the time. But occasionally, the red LED stops working, while the blue and green continue to work. We are controlling the DIN signal from a MCU, which is also powered from the 3V DC source. I understand that the rated VDD supply is 3.3-5.5V. It does not make sense that only the red LED should stop working when the voltage is below the rated minimum. Additionally, this failure is only occasionally observed. Has anyone else faced this issue. If yes, how was this resolved? Should the DOUT pin be pulled low or connected to GND, if not used? We are using a 4 MHz clock frequency for the DIN signal.

Proteus III SPI BLE module communication using PIC32MX470

kmv — Mon, 04 Mar 2024 06:00:54 GMT

Hello all,

I am using the Proteus III SPI BLE module and facing an issue while communicating it with my host controller i.e PIC32MX470F512H, while sending commands from my host controller to the BLE module using SPI protocol, the module is not responding it is in the same state.

Illuminate the Future: New WE ICLEDs Coming Soon - Your Feedback Matters!

Würth Elektronik — Thu, 25 Jan 2024 08:47:30 GMT

Hello Tech Enthusiasts,

Get ready for a lighting "revolution" with us! WE is gearing up to launch the newest technology ICLEDs, set to redefine the way we use light. But hold on tight – we don't just want to develop for you, but WITH you! Your passion and expertise are invaluable. That's why we want to hear your thoughts on which applications are most exciting for these futuristic ICLEDs. What projects, ideas, or challenges would interest YOU? How do you envision these ICLEDs illuminating your universe? Your feedback makes all the difference.

With radiant anticipation,
Nicola Wieland
Würth Elektronik

10Base-T1L PoDL application, isolation?

PBlumberg — Tue, 26 Sep 2023 11:14:25 GMT

Dear all,

we're implementing 10Base-T1L in our device at the moment. The device is to be installed in a switch cabinet in industrial environment and is powered via 24VDC external power supply.

- Does the 1.5kV isolation requirement for network ports apply to the equipment and if so

- How should one achieve the 1.5kV isolation when implementing PoDL, where power is injected via a differential choke? Shall a 1.5kV isolation DC/DC converter be used for the PoDL supply?

My design below is inspired by the Wuerth SPE physical interface at ⁣Single Pair Ethernet | Application Guide | Würth Elektronik (we-online.com)

Looking for reliable and durable capacitors?

Würth Elektronik — Fri, 19 May 2023 09:30:44 GMT

Then our aluminum hybrid polymer capacitors are just right for you and your application. They combine the positive features of aluminum and polymer capacitors and are characterized, among other things, by a low ESR and high stability over the temperature range from -55 up to 105/125 °C.

Find out more about the features and electrical parameters of this technology here:

www.we-online.com/aluhybrid

What do you think: In which applications do you already use or will you use Aluminum Hybrid Polymer Capacitors in the future?

What is the value/part number for the coupled inductor used in 100BASE-T1 PoDL?

Taip — Mon, 10 Apr 2023 20:00:38 GMT

Sorry if this is a repeated question, I am new here.

What is the value/part number for the coupled inductor used in 100BASE-T1 PoDL? I am designing an engineered PoDL for 500mA 12V, PHY is Microchip LAN8770R. Wurth 7448991068 is mentioned in one of the reference design, but that part is too much for my need, and when I tried it out, it killed the Link.

Regards,

100BASE-T1 PoDL Coupled inductor

Taip — Mon, 10 Apr 2023 13:01:05 GMT

I am seeking advices for the values/part numbers for the DMI for filtering the power lines for the 100BASE-T1 PoDL with capacitive coupling in an engineering environment. I am using a pair of the Microchip Eval boards https://www.microchip.com/en-us/development-tool/EV02N47A and add the filter and DMI suggested by TI's app note https://www.ti.com/lit/pdf/tiduet1 . The paper calls out the Wurth's cross-polarity coupled inductor 7448991068 (6.8uH) and 330nH inductors.

When I inserted the contraption the Link got lost. I traced back and the DMI is the part that killed the link. Researching on different paper, I think the value of 6.8uH for the DMI is too low, but I am not sure what is the right value to go with. I only need about 500mA at 12V to be transfered over the T1 line.

Thanks in advance for your help!

„Behind the scenes“ of the new Editon of the Trilogy of Connectors.

Würth Elektronik — Tue, 07 Feb 2023 14:16:52 GMT

Read the exclusive chapters, which did not make the cut for the official book and stay tuned till the new release of the book.

Every two weeks we will upload the articles for you to give a sneak peek behind the Offline Memory Technology.

Read the first ones here:

Technical Insights - Dive Deeper into the World of the MagI³C Power Modules

Würth Elektronik — Tue, 20 Dec 2022 08:10:51 GMT

Our goal is to give you a deeper insight into the world of technology and to make this available to you through short articles. Therefore we have created the first Technical Insights about our MagI³C Power Modules and will now regularly upload more articles.

Isolated MagI³C Power Module Masters the 24V Industry Bus

Selection Criteria and Voltage Ranges

If you have any questions, comments or requests, please feel free to ask and we will look deeper into them!

Application Note ANP085

suresh11 — Thu, 29 Sep 2022 12:30:55 GMT

Hello WE Team,

In Application note ANP085, For 10BASE-T1 transformer design, you have mentioned a minimum value of 100 nF capacitor is required to meet the limits of IEEE802.3cg (Capacitor C3 in figure 16).

What is the maximum capacitor value limit for the same design (with the same transformer)?

Regards

Suresh

Watts Up - The Podcast of Würth Elektronik

Würth Elektronik — Mon, 12 Sep 2022 12:57:39 GMT

Knowledge for the Ears!

Each week, we're seeing what's up in the world of electronic and electromechanical components and PCB design. We'll be checking in with leading industry experts, and Würth Elektronik technology specialists and product managers, who are going to shine a light on interesting topics such as energy harvest, wireless power transfer, EMI issues and more. The Watts Up Podcast can be found on Spotify, iTunes, Google Podcasts, Deezer, and other major podcast streaming networks.

Tune in to get technical design tips and applications during your commute, at your desk, or wherever you might be with the Würth Elektronik's Watts Up Podcast.

Hear all episodes here.

10BASE-T1L, PoDL, Single Pair Ethernet

suresh11 — Mon, 20 Jun 2022 20:11:26 GMT

Hello

I am implementing Power over Data Line in my 10BASE-T1L project. I checked the Würth Electronics webinar video on YouTube "Single Pair Ethernet filter design for industry". The following picture is taken from that [presentation](https://www.we-online.com/web/en/index.php/show/media/06_passive_components_-_custom_magnetics/events_1/webinar_videos/2021_webinars/Single_Pair_Ethernet_Filter_Design.pdfhttps://www.we-online.com/web/en/index.php/show/media/06_passive_components_-_custom_magnetics/events_1/webinar_videos/2021_webinars/Single_Pair_Ethernet_Filter_Design.pdf).

Here, a differential mode inductor is used to inject/takeout DC power on the line. What should be the minimum value of coupled inductor (U3 & U4) for class power (IEEE802.3cg class 10-12)? This might be quite a simple question, but I am very new to circuit design.

Regards

Raj

Tech Spotlight: 3-axis MEMS Acceleration Sensors

Würth Elektronik — Fri, 04 Feb 2022 10:25:10 GMT

Hi everyone!

You want to learn in how to use 3-axis MEMS Acceleration Sensors in live saving wearable devices?

Just click here to read our Tech Spotlight and join the conversation.

FINAL COUNTDOWN: Sensor FeatherWing Kit Roadtest

Würth Elektronik — Wed, 19 Jan 2022 09:12:05 GMT

Hi everyone!

We are having this great Roadtest with our Featherwings:

If you haven´t applied yet now is your chance. There are only 5 days left for application!

Just click here.

Battery chargeing

zuberzahi — Sat, 21 Aug 2021 15:29:01 GMT

Sir i am making a 60V battery pack with 3.2V and 10A small battery cell. And the battery takes lot of time to charge with 3.5 V charger that i am useing now, I reasearched to increase the charge speed I got to know Traditional 12V charger can be used to charge battery Can I use 12V charger to charge 3V battery, what might happen, is there any solution.

Thank you for your time please calrify

Can i change 3.5 V charger to which capacity charger

Help w ceiling fan cap

ral411 — Tue, 02 Jul 2019 17:41:47 GMT

I have an outdoor ceiling that has failed and want to switch out the capacitor and pull chain switch. I have searched anywhere and everywhere I know to look. It appears they no longer manufacturer this particular capacitor.

It is a CBB61 with two orange 600v wires on the one side and on the other side it has:

Yellow @250V 5uF

Purple @250V 5uF

Red .@ 300V 4.5uF

Is there anything that I can safely use to get the fan working working and can you

Point me in a direction to find get one?

Sure appreciate any assistance I can get.

We Ask You - Electronics Blog Würth Elektronik

sleuz — Wed, 25 Mar 2015 09:06:34 GMT

Hi there

We from Würth Elektronik are thinking of having our own electronics blog where we write about several e-related topics and issues.

What we would like to ask the e14 community, is what subjects you would love to read about in a blog?

Maybe you´re following a blog already. If so, please let us know what you find interesting about this particular blog and why you´re following it..

We already have a few areas in mind, feel free to comment:

EMC
Singal & Communication
Power Inductors
Optoelectronics
Electromechanicals
Future Technologies (e.g.: Wireless Power Charging & Energy Harvesting)
Topologies (e.g.: Buck, Boost, Sepic, Cuk)

Looking forward to your answers.

Simon

Get your Hands on these Fingers!

sleuz — Tue, 04 Dec 2012 14:37:14 GMT

SMD EMI Contact Fingers suitable for automated placement and available in different types and sizes. The copper-beryllium (CuBe) gold-plated (AU) material makes this series corrosion-resistant. High temperatures and mechanical weight have no influence on the excellent connection properties.

Get your hands on Würth Elektronik´s WE-SECF SMD EMI Contact Finger series!

Have you ever seen white inductors????? -Check this out!

lfa555 — Fri, 23 Nov 2012 07:38:08 GMT

http://de.farnell.com/jsp/search/productListing.jsp?ICID=I-WUE-1007860-HPBSFP-0113&SKUS=2219493,2219494,2219495,2219496,2219497,2219498,2219500,2219501,2219502,2219503,2219504,2219506,2219507,2219508,2219509,2219510,2219511,2219512,2219513,2219514,2219515,2219516

Crazy stuff! But cool idea/solution for LED drivers! and for all who want something special on their PCB *lol*

Component Selector? - The full magnetics design solution for You!

lfa555 — Tue, 19 Jul 2011 18:54:58 GMT

Dear friends,

Würth Elektronik just released a new sofware tool - the component selector - which is a all-in-one design solution for ferrites, transformers, power inductor and RF filter designs.

Inductor Selector
With this software you select a suitable inductor for non-isolated DC/DC converters in a second. After entry of input voltage range, output voltage and current, a list with all suitable inductors is shown. You can sort this list or narrow it further by individual filter criteria. For all inductors the wire and core losses are simulated, and the estimated temperature is calculated.
FLEX Transformer Designer
This is a practical application for quick and easy determination of suitable transformers out of the WE-FLEX and WE-FLEX+ product range. These flexible transformers have six individual windings that can be connected by the user individually. By entering input and output voltages as well as output current, the suitable components including the windings configuration are determined.
RF Inductor Finder
Choose inductors for high-frequency applications with this program. In the graphs it shows you the inductance value, Q factor and impedance at any frequency to compare and analyze them. Furthermore very complex filter criteria can be set to determine your suitable inductor.
Chip Bead Ferrite Selector
The Chip Bead Ferrite selector is the software for designating the best suitable ferrites for your filter application. The technical values and characteristic curves of all chip bead ferrites of the WE-CBF series can be easily compared and analyzed. You can search for impedances at each specific frequency and filter as well. This very complex filter criteria are easy to handle. Existing filter settings as well as DC/DC converters can be saved and reloaded later on. Furthermore you have online access to all data sheets of the articles listed in the software. S-Parameters can be downloaded, too.

Download:

http://www.we-online.de/web/de/passive_bauelemente_-_standard/toolbox_pbs/Component_Selector_1.php

Ferrit Kabel-clips - EMV

e14 Contributor — Mon, 18 Jul 2011 09:27:12 GMT

Guten Tag,

ich suchte Farnells Website Ferrite - Kabelclips welche man auf Speisungs- und andere Kabel clippen kann und die dann einen Ringkern um das Kabel bilden und so HF blockieren. Ich habe jedoch nichts derartiges gefunden und daraus schliesse ich, dass ich nicht zutreffend vorgegangen bin. Also, wie wird man fündig?

Danke und Gruss - rbrusa

WEdirekt: Rapid PCB online store from the leading European circuit board manufacturer!!!

lfa555 — Thu, 03 Mar 2011 07:56:16 GMT

Dear element 14 community

Wurth Elektronik is now introducing its online shop ‘WEdirekt’ to our global customer base. The shop allows a rapid prototyping service for printed circuit boards made to your specifications.
Order your samples and prototypes easily online. Use the configurator to calculate your circuit board step by step, for just one piece or more — available around the clock.

Select from three categories and get the best value for your money:

Basic guarantees the best value for your money by using default parameters

Select lets you freely configure parameters without fixed default settings

Express offers an especially quick delivery service, from as little as two working days

Please visit the Wurth Elektronik online PCB store and make the ‘WEdirekt’-experience. Please don't hesitate to share your experiences with us here on element 14!

WeDirekt.com

Würth Elektronik EMC Seminars - A must for the design and compliance engineering community

lfa555 — Tue, 24 Aug 2010 11:57:13 GMT

Dear design and compliance engineering community,

We are starting again a series of our famous free EMC Seminars all over Germany with our strategic business partners.

The seminar contains EMC basics as well as specific application examples out of the world of EMC and much more......

Interested? Please visit our website or check out the apointments on the Würth Elektronik element14 page for all dates and locations.

Link to all seminars within Germany:

http://www.we-online.de/web/de/emc/termine_2/eisos_Seminar_Termine.php

Link to all seminars in Europe, Asia and the Americas

http://www.we-online.de/web/en/emc/termine_2/eisos_Seminar_Termine.php

best regards

Würth Elektronik

Press-fit Power Elements are both reliable and flexibility, whilst providing considerable reduction in the thermal loading of your PCB............

e14 Contributor — Thu, 19 Aug 2010 09:24:17 GMT

To read more.....

Ask our expert a question on Inductive components including ferrites, ferrite beads, inductors, common-mode chokes, transformers, and connectors

richardleighton — Thu, 15 Jul 2010 11:00:27 GMT

This thread has been closed to new questions.

However, we welcome you to Post Your Question about Power Management in the element14 Community Power Management group. You'll find many fellow members and experts who have just the answer you're looking to find!

Thank You, Your Friends at element14 Community