# SFP fiber optic transceiver Cudy SM100GSA-20 1250 Mbit/s 1310 nm single-mode up to 20 km

**URL:** https://aio.lv/en/product--cudy-sm100gsa-20--10781043
**Data updated:** 2026-04-27 19:21 (EEST)
**Category:** Network Transceiver Modules
**Manufacturer:** Cudy
**Manufacturer code:** SM100GSA-20
**EAN:** 6971690790707
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 16.99 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 14.04 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cudy-sm100gsa-20--10781043

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

Cudy SM100GSA-20 is an SFP fiber optic transceiver module for single-mode links operating at 1310 nm with a maximum data rate of 1250 Mbit/s and reach up to 20 km. It uses a standard SFP interface, requires 3.3 V input, and features a stainless-steel housing. Designed for network uplinks, switches and telecom equipment in wide temperature ranges.

## Long description

The Cudy SM100GSA-20 is a fiber optic SFP transceiver module in standard SFP form factor. It supports data transmission up to 1250 Mbit/s over single-mode fiber at a wavelength of 1310 nm and is powered from a +3.3 V supply. The module is compatible with the SFP Multi Source Agreement (MSA) and is intended for Gigabit Ethernet applications compliant with IEEE 802.3 definitions for 1000BASE-T/SFP interfaces. The compact metal housing measures approximately 13.7 mm × 68 mm × 13.8 mm and the product colour is stainless steel.
Advantages
The transceiver provides a standard SFP interface for easy hot-pluggable installation and interoperability with MSA-compliant ports. Its 3.3 V power interface conforms to the typical SFP supply range (±5%), and low-speed control signals conform to open-drain CMOS levels with I2C-accessible PHY settings. The design supports link indication using the SFP RX\_LOS pin and allows PHY reset through the SFP TX\_DISABLE pull-up.
Suitable for
Gigabit Ethernet links using SFP ports
Point-to-point fiber connections at 1310 nm
Network equipment requiring hot-pluggable SFP transceivers
Applications needing I2C access to PHY settings
Key specifications
Manufacturer: Cudy, model SM100GSA-20
Interface type: SFP (hot-pluggable)
Maximum data transfer rate: 1250 Mbit/s
Wavelength: 1310 nm
Power supply: +3.3 V (±5%)
Low-speed signals: MOD\_DEF(1) (SCL) and MOD\_DEF(2) (SDA) open-drain CMOS, require pull-up to host\_Vcc
Link indication: uses SFP RX\_LOS pin
Physical dimensions: 13.7 mm × 68 mm × 13.8 mm
Product colour: Stainless steel
How to use
Insert the SM100GSA-20 module into a compatible SFP slot while the host is powered according to the host equipment instructions to enable hot-pluggable operation. Provide a +3.3 V supply within the specified ±5% tolerance and avoid continuous exposure to voltages above the allowed range. Ensure MOD\_DEF(1) and MOD\_DEF(2) lines are pulled up to the host\_Vcc to permit I2C communication with the module. Use the RX\_LOS pin for link status monitoring and, if required, pull up the TX\_DISABLE pin to reset the internal PHY IC.
Usage recommendations
Use the module in MSA-compliant SFP ports and keep the supply voltage within the specified 3.3 V ±5% range. Do not apply voltages up to 4 V for continuous operation. Ensure appropriate pull-up resistors on MOD\_DEF lines and follow host equipment guidelines for hot-plugging and PHY configuration via I2C.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Maximum data transfer rate | 1250 Mbit/s |
| Wavelength | 1310 nm |
| Fiber optic connector | SFP |
| Maximum transfer distance | 20000 m |

### Network

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

### Packaging data

| Feature | Value |
|---|---|
| Number of products included | 1 pc(s) |

### Operational conditions

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

### Power

| Feature | Value |
|---|---|
| Input voltage | 3.3 |
| Maximum voltage | 4 V |

### Features

| Feature | Value |
|---|---|
| Form factor | SFP |
| Product colour | Stainless steel |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 13.8 mm |
| Width | 13.7 mm |
| Depth | 68 mm |

## FAQ

### How much does the Cudy SM100GSA-20 network transceiver module cost, and is it available for purchase?

The price is 16.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 03.08.2026 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 Cudy 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 Cudy 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, 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/10781043/60053427_large.webp