Another casualty of the 21st century world are simple, rugged, reliable parts that do what they do without fuss or drama. Once you could find mica compression variable caps in tons of gear. They were everywhere - until they weren't anymore.
This Arco (Electromotive) 313M is only 0.85" by 0.95" but the capacitance range is a whopping 1000 pf and 2155 pf at a maximum voltage of 1 KV. If you're not familiar with compression trimmer they are very simple; They have a set of metal plates separated by sheets of mica. As you tighten the screw it brings the stack of interleaved mica/metal closer and this increased capacitance. If you loosen the screw the reverse happens.
You can do this from either side of the part.
I do not have the brass nut used to panel mount these, but hey I found you the trimmer, you can go and find them if you need them.
Ships by USPS First Class Package
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Shipping & policies
Almost all orders received before 11 am will be shipped the same day.
Typical transit times:
Priority Mail: 3 business days
First Class Package: 4-5 business days
All items are shipped with tracking. You will receive an email with the tracking number once the item has shipped. Feel free to contact me at any time with questions.
If you need special packing for a gift or special occasion please let us know and we'll see what we can dream up.
I cannot ship under your UPS, DHL, or Fed Ex account.
We accept both PayPal and credit cards through Etsy's Direct Checkout.
You may cancel an order any time before it is shipped for a full refund.
Returns & exchanges
- Custom or personalized orders
- Perishable products (like food or flowers)
- Digital downloads
- Intimate items (for health/hygiene reasons)
You can return any item that is not marked as "AS-IS" within seven (7) business days of receipt. Item must be in the condition it was shipped. You will receive a refund less the shipping cost to you. You must pay return shipping.
The one exception is digital downloads. There are NO returns on digital downloads.
I accept exchanges. You must pay shipping back to Leeds and shipping of new item to you.
Claims for damage:
Leeds has been shipping with the United States Postal Service for 18 years and shipped thousands and thousands of delicate electronic parts and fragile vacuum tubes. In that time we have had only ONE claim for damage.
In the extremely unlikely event that your item arrived damaged please contact me immediately. Save ALL packing.
If there is a problem please contact me through Etsy's convo system.
I want you to be happy.
SPECIAL NOTICE TO FOREIGN BUYERS
1) USPS rates, while still far below those of FedEx and UPS, are quite expensive even for small and light items. You can go to usps.com to get shipping costs.
2) Do NOT ask me to falsify customs declarations.
3) I test everything I sell and I pack VERY carefully but I cannot control how items are handled when they go through customs, for that reason there are NO RETURNS on VACUUM TUBES shipped outside the US.
4) USPS considers Items made of glass to be "inherently fragile" so most of the time they will not pay claims on damaged vacuum tubes. They will however pay claims for items that are lost.
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