# Attenuator BlueOptics SFA23BK5 5 dB Red ST Connector

**URL:** https://aio.lv/en/product--blueoptics-sfa23bk5--4467326
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA23BK5
**EAN:** 4063232045276
**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-sfa23bk5--4467326

## 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

The BlueOptics SFA23BK5 is a 5 dB attenuator designed for ST connectors. It features a red color and is ideal for reducing signal strength in fiber optic applications, ensuring optimal performance and minimal signal loss.

## Long description

The BlueOptics SFA23BK5 is a 5 dB inline fiber optic attenuator with an ST/PC simplex connector, designed to reduce optical signal power in single-mode (9/125 µm) fiber links. It is intended for use across the typical single-mode wavelength window and is supplied in a red housing. The attenuator uses a ceramic (zirconia) ferrule for connector reliability and is tested for input loss and return loss to provide predictable performance on short links or where transmitter power must be reduced to match receiver sensitivity.
Advantages
This attenuator provides a defined 5 dB attenuation level to prevent receiver overload on short-distance or high-power single-mode links. The ST/PC connector interface and ceramic ferrule support stable fiber alignment and durability through repeated matings. The product is factory-tested for insertion loss and return loss, and the housing color (red) helps quick identification during installation and maintenance.
Suitable for
Reducing optical power on short single-mode fiber runs
Telecommunication and data links using ST/PC connectors
Laboratory or field setups where controlled attenuation is required
Systems using G.652.D single-mode fiber
Key specifications
Attenuation: 5 dB nominal
Connector type: ST/PC simplex
Fiber type: single-mode (9/125 µm)
Wavelength range: suitable for common single-mode wavelengths (approx. 1270–1610 nm)
Ferrule material: zirconia ceramic
Housing color: red
Operating temperature range: designed for extended industrial range (typical -40 °C to +75 °C)
Compliance: manufactured to industry norms and low-smoke zero-halogen jacket for reduced smoke emission
How to use
Install the attenuator inline between two ST/PC connectors by inserting the male ST plug into the attenuator and then connecting the attenuator’s ST end to the mating receptacle or patch cable. Ensure connectors and fiber endfaces are clean before connection to avoid contamination-related loss. Verify system power levels after installation with an optical power meter to confirm the effective 5 dB reduction and to ensure the receiver operates within its acceptable input range.
Usage recommendations
Use the attenuator with clean, undamaged connectors and avoid excessive bending or mechanical stress on the fiber. For repeated installations, verify endface condition and mating cycles; the ceramic ferrule supports many matings but proper handling extends service life. If different attenuation values or connector types are required, select the corresponding model to match system requirements.

## Specifications

| Feature | Value |
|---|---|
| Connector(s) | ST |
| Product colour | Red |
| Temperature range (T-T) | -40 - 75 |
| Attenuation | 5 dB |

## FAQ

### How much does the Attenuator BlueOptics SFA23BK5 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 — 16 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/4467326/64294741_large.webp