# Optical Fiber Attenuator CBO SFA23BK10 10 dB Singlemode ST Simplex

**URL:** https://aio.lv/en/product--blueoptics-sfa23bk10--4467320
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA23BK10
**EAN:** 4063232045153
**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-sfa23bk10--4467320

## 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

Passive optical fiber attenuator CBO SFA23BK10 provides a fixed 10 dB attenuation for singlemode fiber links. It features an ST simplex connector and is used to reduce signal power between transceivers and receivers to prevent saturation and optimise link performance. Suitable for testing, lab work and field installations where controlled attenuation is required.

## Long description

The Optical Fiber Attenuator CBO SFA23BK10 10 dB Singlemode ST Simplex is a passive inline device designed to provide a fixed 10 dB signal reduction in singlemode fiber links. It uses an ST simplex connector interface and is intended to balance optical power levels between transceivers and receivers, preventing receiver saturation and ensuring stable link performance in laboratory, testing and installation environments.
Advantages
This fixed 10 dB attenuator offers a simple, reliable method to lower optical power without power source or configuration. Its ST simplex form factor is compatible with equipment using ST connectors and enables quick insertion into existing singlemode fiber links. The passive design delivers predictable attenuation across standard singlemode wavelengths and reduces the need for electronic gain control when connecting high-power optics to sensitive receivers.
Suitable for
Laboratory testing and measurement of singlemode fiber systems
Field installations where optical power must be reduced to meet receiver input limits
Temporary link adjustments during commissioning or troubleshooting
Protecting receivers from saturation when connecting high-power transceivers
Key specifications
Attenuation: fixed 10 dB
Fiber type: singlemode
Connector type: ST simplex
Operation: passive inline attenuator
Typical insertion loss tolerance: defined for fixed attenuators at specified wavelength ranges
How to use
Insert the attenuator inline between the transmitting device and the receiver using compatible ST simplex connectors. Ensure connectors are clean before mating to avoid contamination and increased loss. After insertion, verify optical power levels at the receiver to confirm the expected 10 dB reduction and adjust cabling or additional attenuation as required. The device requires no power or configuration and can remain installed as part of a permanent or temporary link.
Usage recommendations
Inspect and clean ST connector endfaces with appropriate fiber cleaning tools before use; avoid bending the fiber sharply at the connector interface. Use this attenuator for singlemode wavelengths and check power budgets after installation to ensure sufficient margin at the receiver.

## FAQ

### How much does the CBO SFA23BK10 10 dB Singlemode ST Simplex Attenuator 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 — 11 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

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