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Description
FERROXCUBE RM12/I-3C90 Transformer Cores, RM12/I, 3C90, 56.6 mm, 146 mm�The RM series Transformer Core designed for use in high Q, high stability filters inductors. Its shape allows economic utilization of surface area on the PCB. The range is standardized in IEC 431 and is available worldwide from many suppliers. The sizes are based on the standard PCB grid distance. RM 5, for instance, fits on a board space of 5 x 5 modules of 2. 5mm grid. Coil formers and clips were optimized for automated winding and mounting. The
The RM series Transformer Core designed for use in high Q, high stability filters inductors. Its shape allows economic utilization of surface area on the PCB. The range is standardized in IEC 431 and is available worldwide from many suppliers. The sizes are based on the standard PCB grid distance. RM 5, for instance, fits on a board space of 5 x 5 modules of 2.5mm grid. Coil formers and clips were optimized for automated winding and mounting. The slots provide sufficient space for leads of windings. Magnetic shielding is not as good as with P-core, but still effective. For applications other than filter inductors the centre hole in the RM core is not necessary. Inductance adjustment is generally not required. For wideband and power transformers core performance can be improved by using a solid centre pole. AL-values will be higher and less flux concentrations occur in the core because its cross section has become more uniform.
- Standardized range
- Complete range of accessories
- Easy for automated winding
- Simple assembly and mounting system
- Efficient utilization of PCB area
- Wider slots to get leads out
- Good magnetic shielding
- Good selection of coil formers
- Small winding area
Applications
Industrial, Power Management
Product details
| Ae Effective Cross Section Area | 146mm� |
| Effective Magnetic Path Length | 56.6mm |
| Core Material Grade | 3C90 |
| Core Type | - |
| Product Range | RM Series |
| For Use With | - |
| Inductance Factor Al | 5.6�H |
| Core Size | RM12/I |
Other details
| Brand | FERROXCUBE |
| Part Number | RM12/I-3C90 |
| Quantity | 1 Pair |
| Technical Data Sheet 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.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.6 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Nice
Color: Suitcase - Black
This was a Christmas gift for my son. He loves records. He was very happy with it. So far it works and very nice suite case where we can move it from one place to other.
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Reviewed in the United States on January 8, 2026
★★★★★ 5
Power adapter missing
Color: Suitcase - Black
Got the item today everything was in the box except the power adapter ! Please replace so we can use this player.update in just a couple of days we received a new one! Works perfect Hubby is really enjoying listening to his vintage albums! Thank you so much!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2025
★★★★★ 5
Good Speakers with plenty of volume.
Size: 1 Pair, Color: Black
Got these speakers just so I could have sound, but the speakers turned out to be better then I expected. The sound good and they have plenty of volume. I adjusted everything to full volume and it was way too loud. The only knock on these speakers is their built in volume knob is on the speaker cable and hangs below my desk (no big deal for me I set the hardware volume to almost max then adjust with my software volumes. The USB power made setup easy and they are compatible with anything with a line out port. Good speaker at a great price.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Bang for your buck!
Size: 1 Pair, Color: Black
Bought these for my Dell computer because the built-in speakers were hard to hear. These made a big difference right away. Sound is much louder and clear for music, videos, and everyday use. They don’t have a lot of bass, but for the price I really can’t complain. Good speakers if you’re looking for a simple and affordable upgrade.
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Reviewed in the United States on June 6, 2026
★★★★★ 4
Best used with Laptop
Size: 1 Pair, Color: Black
These speakers are of better quality than they seem and will probably surprise most if used properly. When hooked up to a computer or laptop (via usb and aux), they work AMAZING. But when I tried to hook them up to my ps5, the quality went way down— the sound ceiling and especially base is almost non existent when plugged into a gaming system. I still use them for my ps5 but only because I live in an apartment—when I move, I’m upgrading. However, the quality for the price is so good that I bought another pair for my classroom. It’s more than enough sound to get the job done. Classic, Solid Amazon brand quality getting the job done.
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Reviewed in the United States on April 9, 2026
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