# Optical attenuator CBO SFA22BK3 Singlemode 3 dB SC Simplex

**URL:** https://aio.lv/en/product--blueoptics-sfa22bk3--4467317
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA22BK3
**EAN:** 4063232044910
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 24.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfa22bk3--4467317

## 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

CBO SFA22BK3 is a singlemode optical attenuator with 3 dB attenuation and SC simplex connector. Designed to reduce optical signal power in fibre networks, it provides stable attenuation for testing, link balancing and protection of receivers. Compact inline design supports easy installation in patch panels, enclosures and field cabling.

## Long description

CBO SFA22BK3 Singlemode 3 dB SC Simplex optical attenuator from BlueOptics is designed to reduce optical signal power in singlemode fibre links by a fixed 3 dB. Its compact inline SC simplex connector form factor allows integration directly into patch panels, adapters, fibre enclosures or field cabling to provide controlled attenuation for testing, link balancing and protection of sensitive receivers. The device is intended for use in standard singlemode networks and offers a passive, wavelength-independent solution for managing optical power levels.
Advantages
The attenuator provides a precise, stable 3 dB attenuation with low back reflection and consistent performance across common singlemode wavelengths. Its SC simplex connector and inline design make installation straightforward without additional adapters. Passive construction requires no power and ensures long-term reliability and maintenance-free operation in both lab and field environments.
Suitable for
 Balancing optical power between transmitters and receivers in singlemode links
 Reducing signal level for receiver protection during testing or commissioning
 Laboratory measurements and field verification of fibre links
 Integration into patch panels, wall boxes or connectorised patch cords
Key specifications
 Attenuation value: 3 dB (fixed)
 Fibre type: singlemode
 Connector type: SC simplex
 Design: inline/passive attenuator
 Typical return loss: low back reflection suitable for singlemode applications
 Operating characteristic: wavelength-independent over standard singlemode ranges
How to use
Insert the SC simplex connector of the attenuator directly between two SC-terminated fibre connectors or into an SC adapter in a patch panel. Ensure connectors are clean before mating to avoid insertion loss caused by contamination. The fixed 3 dB attenuation will be applied immediately when the attenuator is in place; no configuration or power is required. For measurement tasks, place the attenuator in the optical path at the point where reduction of power is needed and verify link performance with an optical power meter or OTDR as appropriate.
Usage recommendations
Store the attenuator in a clean, dry environment when not in use and avoid exposing connectors to dust. Always inspect and clean fibre endfaces with appropriate cleaning tools before connection. For best results in critical measurements, confirm attenuation effect with calibrated test equipment and avoid chaining multiple fixed attenuators unless total attenuation is verified.

## FAQ

### How much does the Optical attenuator CBO SFA22BK3 Singlemode SC 3 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 — 50 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/4467317/59859869_large.webp