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Description
EPCOS B66417U0100K187 Transformer Cores, EFD20, N87, 47 mm, 31 mm²This is a Transformer Cores, EFD20, N87, 47 mm, 31 mm product from EPCOS with the model number B66417U0100K187Product details Core Type Core Size EFD20 For Use With Core Material Grade N87 Effective Magnetic Path Length 47mm Ae Effective Cross Section Area 31mm Inductance Factor Al 100nH Product Range B66417 Series Other details Brand EPCOS Part Number B66417U0100K187 Quantity Each Technical Data Sheet EN Drawing EN Product Change Notice EN All
This is a Transformer Cores, EFD20, N87, 47 mm, 31 mm² product from EPCOS with the model number B66417U0100K187Product details
| Core Type | - |
| Core Size | EFD20 |
| For Use With | - |
| Core Material Grade | N87 |
| Effective Magnetic Path Length | 47mm |
| Ae Effective Cross Section Area | 31mm² |
| Inductance Factor Al | 100nH |
| Product Range | B66417 Series |
Other details
| Brand | EPCOS |
| Part Number | B66417U0100K187 |
| Quantity | Each |
| Technical Data Sheet EN | |
| Drawing EN | |
| Product Change Notice EN |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.3 ★★★★★
Based on 432 reviews
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Product Reviews
★★★★★ 5
WIDE Dress Shoes With SUPPORT
Size: 10.5, Color: Brown
I've seen dress shoes and worn dress shoes before, but these are simply the best dress shoes I've ever worn my entire life. 99% of dress shoes have the same problem, they have the thinnest little soles that offer no support. BRUNO MARC HAS SOLVED THE PROBLEM. These dress shoes not only support wide feet like mine who historically have had and still have little support in the market, but Bruno Marc has wide options that fit perfectly, and the support with the thick foam sole is so needed and awesome. I had a pleasant surprise putting these things on and there being some tactile grip enhancers inside the shoe so you can feel the shoes better and get a little tickle / massage while you're at it. These things are dripping with style, easy to wear, and while they might look firm on the outside, on the inside the shoe just has such a nice flexibility and foamy feel, the top where the top of your feet feel the roof of the shoe, it has such perfect ooey gooey support I can't believe it. The outside sole also has this neat tactile feel. The durability looks good and feels good for now.
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Reviewed in the United States on September 28, 2025
★★★★★ 5
Good fit and stylish
Size: 12, Color: Brown
They to size pretty good and they're pretty comfortable
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Select your true size.
Size: 12, Color: Brown
True to size. I wear a 10.5 W in dress shoes, tried them on and they felt a little big. Returned for a 10, bad mistake. When I wore them they hurt my feet around the toes area due to the narrow toe part of the shoe. Suggest a true to size pick when buying. Other than my error the shoes felt great.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Very nice quality and affordable
Size: 8.5, Color: Black
Great quality and affordable! Comfortable and look great! Would definitely recommend.
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Reviewed in the United States on September 20, 2025
★★★★★ 4
Snazzy Looking and Cost-Effective Dress Shoes
Size: 9.5, Color: Black
The shoes fit great and look very nice. They keep their shine and comfortable. I would say there are two drawbacks. 1. When you put them on, the tongue pushes up far and you have to pull it back. 2. There is little to no arch support and would recommend insoles if you have any foot condition. I haven’t had these through a snowy and salty winter.
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Reviewed in the United States on August 7, 2025