# Optical Fiber Attenuator CBO SFA23BK25 Singlemode 25 dB

**URL:** https://aio.lv/en/product--blueoptics-sfa23bk25--4467324
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA23BK25
**EAN:** 4063232045238
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 24.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfa23bk25--4467324

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Fixed optical fiber attenuator CBO SFA23BK25 for singlemode networks with 25 dB attenuation. Designed to reduce optical signal power in fiber links to prevent receiver saturation and match power levels. Compact inline device suitable for splices, patch panels and testing setups; passive, no power required. Commonly used in telecom, datacom and lab environments.

## Long description

The Optical Fiber Attenuator CBO SFA23BK25 Singlemode 25 dB is a fixed inline attenuator designed for singlemode fiber networks. It provides a stable 25 dB reduction of optical power to protect receivers from saturation and to equalize link power levels. The compact, passive design requires no external power and is suitable for integration in patch panels, splice enclosures and temporary test setups where predictable attenuation is needed.
Advantages
This singlemode attenuator delivers a precise, fixed attenuation value of 25 dB with low insertion loss variance, ensuring repeatable optical performance. Its robust, compact housing simplifies deployment in confined spaces and rack-mounted environments. Being a passive device, it requires no electrical connection and contributes no additional noise to the optical path. The design supports standard singlemode connectors and is suitable for use in telecom, datacom and laboratory environments.
Suitable for
Reducing optical power to prevent receiver overload in singlemode links
Power equalization between fiber links in multi-span or multi-channel systems
Temporary connection for measurement and testing during installation and maintenance
Insertion into patch panels, splice trays or inline fiber assemblies
Key specifications
Attenuation: fixed 25 dB
Fiber type: singlemode (SM)
Operating principle: passive inline attenuator
Connector compatibility: standard singlemode connector interfaces (check connector type before installation)
Typical applications: telecom, datacom, laboratory testing and fiber installations
How to use
Insert the attenuator inline between two connectorized fiber cables or into the designated port on a patch panel. Ensure connector endfaces are clean and free of dust before mating to avoid additional loss or damage to connectors. Confirm the connector type and polarity match the system requirements. After installation, verify signal levels with an optical power meter or test equipment to confirm expected attenuation and proper system operation.
Usage recommendations
Store the attenuator in a clean, dry environment when not in use and avoid excessive bending of connected fibers. For reliable performance, inspect and clean connectors with appropriate fiber cleaning tools before each connection and verify attenuation with measurement equipment after installation.

## FAQ

### How much does the Optical Attenuator CBO SFA23BK25 Singlemode 25 dB cost, and is it available for purchase?

The price is 29.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 23.07.2026 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. 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.

### What is the warranty period?

All BlueOptics products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized BlueOptics service centers and through AiO.lv

### 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/4467324/59859871_large.webp