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Mikrotik S-85DLC05D 1.25G SFP Transceiver 850nm Multimode 550m Dual LC
Original price was: KSh 5,600.00.KSh 4,800.00Current price is: KSh 4,800.00. ex VAT
Mikrotik S-85DLC05D 1.25G SFP Transceiver 850nm Multimode 550m Dual LC
| Form Factor | SFP |
| Data Rate | 1.25G (1000BASE-SX) |
| Wavelength | 850nm |
| Fiber Mode | Multimode |
| Connector | Dual LC UPC |
| Maximum Distance | 550m |
| Transmit Power | -9 to -3 dBm |
| Receiver Sensitivity | -24 dBm |
| Diagnostics | DDM |
| Temperature | -40 to +85°C |
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Warranty 1 year
72-hour (3-day) returns
Description
1.25G SFP Module for Multimode Fiber Links
The Mikrotik S-85DLC05D is a 1.25G SFP transceiver built for 1000BASE-SX links over multimode fiber. It pairs an 850nm VCSEL transmitter with a dual LC UPC connector and reaches 550m. Digital diagnostics report live optical and thermal data.
Transmit output spans -9 to -3 dBm, and average receiver sensitivity sits at -24 dBm. Maximum received power reaches 0 dBm, while LOS asserts at -36 dBm and de-asserts at -24 dBm. The module runs from a single 3.3V rail and draws under 1W. Hot-swap support lets engineers seat it in any SFP 1G cage without powering down the chassis.
The metal housing is tested from -40 to +85°C, which suits outdoor cabinets and unheated rooms. MTBF is roughly 100,000 hours at 25°C. Units interoperate with MikroTik RouterBOARD and CCR hardware and with third-party SFP slots. Reach depends on fiber grade, and OM3 or OM4 cable extends the span beyond the 550m rating.
Key Features
1000BASE-SX Compliance
Conforms to the 1000BASE-SX specification for 850nm short-reach multimode transport.Dual LC UPC Interface
Accepts two multimode strands through a standard duplex LC connector.Digital Diagnostics Monitoring
- Reports TX power, RX power, supply voltage, temperature and laser bias current
- Exposes LOS assert and de-assert thresholds for link fault isolation
Low Power Draw
Operates from a single 3.3V supply and consumes under 1W.Wide Thermal Envelope
Rated for -40 to +85°C ambient testing across the operating range.Hot-Swap SFP Package
Fits standard SFP 1G cages and supports replacement without a chassis shutdown.
Specifications
| Feature | Specification |
|---|---|
| Model | S-85DLC05D |
| Form Factor | SFP |
| Data Rate | 1.25G |
| GigE Standard | 1000BASE-SX |
| Fiber Mode | Multimode (MM) |
| Wavelength | 850nm |
| Connector | Dual LC UPC |
| Maximum Distance | 550m |
| Transmit Optical Power | -9 to -3 dBm |
| Receiver Sensitivity (Average) | -24 dBm |
| Maximum Received Power | 0 dBm |
| LOS Assert | -36 dBm |
| LOS De-assert | -24 dBm |
| Supply Voltage | 3.3V |
| Power Consumption | Under 1W |
| Diagnostics | DDM (Digital Diagnostics Monitoring) |
| Tested Ambient Temperature | -40 to +85°C |
| MTBF | Approximately 100,000 hours at 25°C |
What’s in the Box
S-85DLC05D SFP transceiver module
Why Choose the S-85DLC05D
Adds short-reach multimode connectivity to any SFP cage without replacing the switch platform.
Telemetry on optical power and laser bias current shortens fault isolation on long fiber runs.
Tested interoperability with third-party SFP slots avoids vendor lock-in on mixed network hardware.
Broad thermal rating covers edge cabinets, industrial enclosures and unheated communications rooms.




Eunice Chebet (verified owner) –
850nm module negotiated at 1G with no errors on the counters.
Joseph Mutiso (verified owner) –
Clean.
Mercy Wambui (verified owner) –
Dual LC fits snug, no wiggle.
Kennedy Ouma (verified owner) –
Link came up first try on the 550m run.