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Description
WELWYN RC55Y-301KBI Through Hole Resistor, 301 kohm, 200 V, Axial Leaded, 250 mW, � 0.1%, RC55 SeriesThe Welwyn RC55 series are axial leaded, precision metal film resistors. The resistance value includes E24 and E96 decade values from 1ohm to 4Mohm. These resistors have a metal film deposited on high quality ceramic former. Nickel plated steel caps are force fitted to the former and termination wires are welded to the caps. The resistor is adjusted to value by a helical cut in the film and the body is protected with a specially formulated epoxy
The Welwyn RC55 series are axial leaded, precision metal film resistors. The resistance value includes E24 and E96 decade values from 1ohm to 4Mohm. These resistors have a metal film deposited on high quality ceramic former. Nickel plated steel caps are force fitted to the former and termination wires are welded to the caps. The resistor is adjusted to value by a helical cut in the film and the body is protected with a specially formulated epoxy coating.
- Available in �0.055(W), �0.1%(B), �0.25%(C), �0.5%(D) & �1%(F) tolerance values
- Temperature coefficient is 5(V), 10(T), 15(Y), 25(D), 50(C) & 100ppm/�C(Z) values available
- Power rating of 0.25W
- Limiting element voltage of 350V
- Low noise and negligible voltage coefficient
- Operating temperature range -55�C to +155�C
Applications
Industrial, Consumer Electronics, Portable Devices, Power Management
Product details
| Temperature Coefficient | � 15ppm/�C |
| Power Rating | 250mW |
| Resistor Element Material | Metal Film |
| Automotive Qualification Standard | - |
| Resistance | 301kohm |
| Resistance Tolerance | � 0.1% |
| Product Range | RC55 Series |
| Resistor Case Style | Axial Leaded |
| Voltage Rating | 200V |
Other details
| Brand | WELWYN |
| Part Number | RC55Y-301KBI |
| Quantity | Each |
| Technical Data Sheet EN |
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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]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Continent for freshening up your smile
Size: 40 Count (Pack of 1)
These Crest 3D whitening strips are seriously effective! I noticed a difference after just a few uses—my teeth looked brighter and cleaner without any harsh sensitivity. They stick well and stay in place, which makes it easy to go about my day while using them. The results feel professional without the expensive price tag. Definitely a simple and convenient way to freshen up your smile at home!
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Really works!
Size: 40 Count (Pack of 1), Size: 40 Count (Pack of 1)
I used this product faithfully and it worked!my teeth got brighter, and whiter I wish I could have taken a before and after.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
★★★★★ 5
Truly see the difference
Size: 40 Count (Pack of 1)
Works amazingly. Definitely worth it.
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Reviewed in the United States on June 9, 2026
★★★★★ 5
The strips work great!
Size: 40 Count (Pack of 1)
It's a great product that works. I left the strips on for 2 hours. And my teeth were so white, I decided not to use the light. I drink 3-4 cups of strong coffee everyday, and they are still really white (after one application over two weeks ago). My gums were a little sensitive after 2 hours, but that only lasted a few hours after usage. Just be aware if you leave on more than 60 minutes. Then brush and rinse really good. I use their "brilliance" tooth paste as well.
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Reviewed in the United States on June 16, 2025
★★★★★ 4
DOOOO IT (see before & after pics)
Size: 40 Count (Pack of 1), Size: 40 Count (Pack of 1)
My dentist actually recommended this in contrast to the products offered in office! So I had to try. I was especially interested in a whitening system that would not sacrifice effectiveness for gum sensitivity. Not only could I see instant improvement, but I had no gum irritation whatsoever, not even next day. So that's the two big things that exceeded expectation. A few drawbacks though - (1) Instructions were unclear as to how long to leave the light on, & I didn't realize until after mixed Internet recommendations & testing it out blindly that it automatically times out after a few minutes; (2) the product unfortunately outlasts the light's battery life, so I had to find a $16 replacement LED on Ebay, & (3) the adhesive will strip your dental work fyi. Not cool, but still overall beneficial as a whitener & hundreds cheaper than true, professional whitening. BTW this before and after were taken within a month of each other.
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Reviewed in the United States on April 29, 2026