# Backup Supercapacitor EB391818875 THT electrolytic capacitor — model EB391818875

**URL:** https://aio.lv/en/product--backup-supercapacitor-eb391818875-tht-electrolytic-capacitor-model-eb391818875--6636755
**Data updated:** 2026-02-12 14:21 (EET)
**Category:** Other Repair Parts
**Manufacturer code:** EB391818875#
**EAN:** 3100000931568
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 4.30 €
**Prices and availability valid until:** 2026-08-16 23:59
**Price without VAT (21%):** 3.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--backup-supercapacitor-eb391818875-tht-electrolytic-capacitor-model-eb391818875--6636755

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.79 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Electrolytic backup supercapacitor EB391818875 in THT (through-hole) format. Designed to provide short-term energy storage and backup power for electronic circuits and devices. Suitable for use in power-fail protection, real-time clocks, and buffer power applications where compact, reliable temporary energy delivery is required.

## Long description

The EB391818875 THT electrolytic backup supercapacitor is a through-hole component designed to provide short-term energy storage and reliable temporary power delivery for electronic circuits. It is intended for applications where compact backup energy is required to maintain settings, support real-time clocks, or supply brief bursts of power during power-fail events. The component’s THT format facilitates secure PCB mounting and mechanical stability in a variety of board designs.
Advantages
This backup supercapacitor offers fast charge and discharge capability, high cycle life compared with traditional batteries for repeated short-term backup use, and stable performance across typical operating temperatures. Its through-hole package ensures robust solder joints and mechanical retention on printed circuit boards, and the electrolytic construction delivers a favorable energy-to-size ratio for compact applications.
Suitable for
Power-fail protection of microcontrollers and embedded systems
Maintaining real-time clocks and non-volatile settings during short outages
Buffer power for communication modules during brownouts
Energy-hold for low-power sensor nodes and data-logging devices
Key specifications
Mounting type: through-hole (THT) for PCB installation
Device type: electrolytic backup supercapacitor for short-term energy storage
Typical characteristics: designed for fast charge/discharge cycles and repeated buffering operations
Mechanical: compact cylindrical/axial or radial through-hole package suitable for soldering and wave/manual assembly
Operating temperature: suitable for common industrial and consumer electronics ambient ranges
How to use
Install the supercapacitor on the printed circuit board according to the board layout and polarity markings, observing correct lead orientation and soldering practices for through-hole components. Use appropriate series resistance or charge-limiting circuitry when charging the device to control inrush current. Place the component near the circuit elements it is intended to back up, such as real-time clock modules or microcontroller power domains, to minimise trace resistance and voltage drop during discharge.
Usage recommendations
Store and operate the supercapacitor within manufacturer-recommended temperature and humidity ranges. Avoid prolonged exposure to high temperature which can reduce service life. For reliable backup behavior, verify charge levels periodically in the system design and include appropriate protection against reverse polarity and overvoltage conditions.

## FAQ

### How much does the Backup Supercapacitor EB391818875 THT cost, and is it available for purchase?

The price is 4.30 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 27.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/6636755/49253754_large.webp