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Quick Details

  • Place of Origin: China (Mainland)
  • Brand Name: Top-trans
  • Model Number: TOP-SFP-1.25G-MMD
  • Wavelength: 1.25G
  • Data Rate: 850nm
  • Distance: 550M
  • Connector: Dual LC Connector
  • Diagnostics: digital
  • Name: DDM SFP
  • Temperature: 0°C~70°C
  • Voltage supply: 3.3v
  • Module type: Pluggable
  • Warranty: 3 years

Packaging & Delivery

Packaging Details: according to quantity ,we can offer 1 by one in box ,or 10pcs in plastic box or 20pcs. and we can do as required
Delivery Detail: Shipped in 1 days after payment
Product Description



H3C SFP-GE-SX-MM850-A 1.25gb/s MMF 850nm sfp transceiver

  •  Transceiver unit with independent
  •  VCSEL laser transmitter and PIN photo-detector
  •  Up to 1.25Gbps data rate operation
  •  Up to 550M transmission distance at 1.25Gbps
  •  Standard serial ID information compliant with SFP MSA
  •  SFP MSA package  with duplex LC connector
  •  Digital Diagnostic Monitor Interface
  •  +3.3V single power supply
  •  RoHS compliant
  •  Case operating temperature  
  •           Commercial: 0°C to +70°C  
  •           Extended: -10°C to +80°C  
  •           Industrial: -40°C to +85°C


Our Services


Packaging & Shipping



Company Information






Q1. Are your transceiver modules compatible with Cisco? 

A1: Yes, Topstar  transceivers can compatible with Cisco. All the brand  Topstar's SFP compatible as the fellowing:Cisco, Nortel, Juniper, 3COM, HUAWEI, H3C, Alcatel-lucent, FOUNDRY, D-Link, EXTREME, Ruijie, NETGEAR, ZTE, Enterasys, ZyXEL, Linksys, Ericsson, DCN, Allied, SMC, Brocade, Force10, Hirschmann, Planet, Adtran, ASNTE, Trendnet, BDCOM, BLADE, BITWAY, Telco, Feixun...etc



Q2. How does your company do regarding quality control?

A2: Every single optic individually tested in our test center , and also tested for compatibility on a variety of different brands of network equipment



Q3. What are the trade terms?

A3: Lead Time: most popular optics in stock ,ready to ship. some of higher-value and specialize optics have a short lead time. 

              Payment term: Western union, T/T, Aliexpress escow, money gram ,cash payment

              Warranty:  3 year  



 Q4. What is operating temperature range of optical modules?

A4: Commercial temperature range(COM) : 0 to 70°C(32 to 158°F)

     Extended temperature range(EXT):-5 to 85°C(23 to 185°F)

     Industrial temperature range(IND)::-40 to 85°C(-40 to 185°F)

     Storage temperature range:-40 to +85°C(-40 to 185°F)

     We can supply according to your request. 




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Transaction History of the Supplier

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Transaction Details

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China (Mainland)
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10 Transactions 30,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $39,000
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