# SFP Transceiver BlueOptics SFP-21A-BO 1250 Mbit/s Fiber Optic

**URL:** https://aio.lv/en/product--blueoptics-sfp-21a-bo--4468744
**Data updated:** 2026-02-25 16:33 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP-21A-BO
**EAN:** 4063232647753
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 58.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 48.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfp-21a-bo--4468744

## 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 SFP-21A-BO is a fiber optic SFP transceiver module with a maximum data transfer rate of 1250 Mbit/s. It features a metal housing, operates at an input voltage of 3.3 V, and weighs only 3 g. Ideal for high-speed data communication in networking applications.

## Long description

The BlueOptics SFP-21A-BO 1250 Mbit/s Fiber Optic SFP transceiver is a compact single‑module solution for fiber-based network links. Designed to meet MSA SFP form-factor requirements, it supports 1250 Mbit/s (1.25 Gbit/s) data rates over single‑mode fiber using an LC simplex connector. The module has a metal housing, operates from a 3.3 V supply and weighs approximately 3 g, making it suitable for installation in switches, routers and storage systems that accept SFP transceivers.
Advantages
The module provides support for up to 1.25 Gbit/s optical transmission over long distances and complies with common MSA standards for mechanical and electrical compatibility. Its metal housing offers mechanical robustness and heat dissipation, while the lightweight design eases handling and installation. Integrated digital diagnostic monitoring (DDM/DOM, MSA SFF-8472 compliant) enables real‑time access to operating parameters such as supply voltage, laser bias current, transmit output power, receive input power and temperature, helping with remote diagnostics and maintenance.
Suitable for
1 Gbit/s fiber uplinks and network aggregation links
Switches, routers and storage interfaces that accept SFP transceivers
Long‑reach single‑mode connections (up to tens of kilometers depending on fiber and link design)
Environments requiring DDM/DOM monitoring for link diagnostics
Key specifications
Form factor: SFP (MSA compliant)
Max. data rate: 1250 Mbit/s (1.25 Gbit/s)
Connector: LC simplex
Fiber type: single‑mode
Typical wavelengths: separate transmit and receive wavelengths for single‑fiber bi‑directional links
Operating voltage: 3.3 V
Housing: metal
Weight: approx. 3 g
Digital diagnostics: DDM/DOM (MSA SFF-8472 compatible)
How to use
Insert the BlueOptics SFP-21A-BO into an available SFP slot on a compatible network device while the device is powered according to the manufacturer's instructions or hot‑swap if the host supports it. Connect an LC simplex single‑mode fiber patch cord to the module and to the corresponding remote transceiver, observing correct orientation for Tx and Rx. Verify that the host device recognizes the module and, if required, enable DDM/DOM monitoring through the host management interface to read operational parameters. Follow standard safety practices for handling optical transceivers and fiber optic cabling, including avoiding direct eye exposure to active optical ports.
Usage recommendations
To achieve optimal link performance, use single‑mode fiber and high‑quality LC patch cords, ensure the host hardware supports the SFP-21A‑type transceiver and enable DDM/DOM support if remote diagnostics are needed. Keep fiber connectors clean and follow the network equipment vendor’s specifications for supported transceiver models and firmware compatibility.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Maximum data transfer rate | 1250 Mbit/s |
| Fiber ethernet cabling technology | 1000BASE |
| Duplex system | Full |
| Fiber optic connector | SFP |
| Rx wavelength (max) | 1490 nm |
| Tx wavelength (max) | 1310 nm |
| SFP transceiver standard | BX-U |

### Network

| Feature | Value |
|---|---|
| SFP transceiver type | Fiber optic |

### Operational conditions

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | 0 - 70 |
| Maximum operating temperature | 70 °C |
| Minimum operating temperature | 0 °C |

### Power

| Feature | Value |
|---|---|
| Input voltage | 3.3 |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 2 g |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.003 kg |

### Features

| Feature | Value |
|---|---|
| Product colour | Silver |
| Housing material | Metal |

## FAQ

### How much does the SFP Transceiver BlueOptics SFP-21A-BO cost, and is it available for purchase?

The price is 58.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 131 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: interface type, maximum data transfer rate, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/4468744/64296147_large.webp