U78-B4126-X0621
| Model | U78-B4126-X0621 |
| Description | Telecom and Datacom Connector |
| PDF file | Total 2 pages (File size: 139K) |
| Chip Manufacturer | AMPHENOL |
SFP
U77-A4114-2001
U77-A1118-2001
Amphenol’s SFP interconnect system consists of a 20-position connector enclosed in a metal cage mounted
to a host PCB.
Amphenol single port and stacked SFP connectors are rated up to 6 Gbps. They are available in standard
RoHS compliant or non-RoHS compliant versions. The cages have a one-piece construction with enhanced
transceiver mating tabs available in press-fit version and solder tail version. Longer or shorter pins are available
as custom options.
Single Row versions (1xN) consist of SMT connectors used with a separate single row cage (press-fit or solder
tail). Stacked versions (2xN) consist of a 2 row cage with integrated 2 row connectors. The entire assembly is
press-fit compliant pin.
Specification Highlights
The interconnect system is comprised of a cage assembly which is used with 20-position
SFP connectors complying with MSA Agreement INF-8074i.
General Characteristics
• RoHS compliant
• Industry standard footprint
• Industry standard EIA-364
Mechanical Characteristics
• Accepts multiple transceivers per INF-8074i
• Compliant press-fit pins or solder tails (1x1 cages)
• Durability: 250 mating cycles minimum
Electrical Characteristics
• Hot swappable
• Operating voltage: 3.3 V
• Operating current: 0.5 A
• Differential impedance: 100
Ω+/-
10
Ω
• DWV: 300 V AC
• Insulation resistance: 1000 MΩ min
• Contact resistance: 70 mΩ max
• Spring fingers for superior EMI grounding
Packaging
• Tape and reel packaging: connector or 1x1 cage
• Tray packaging: cage of all sizes
• Bulk packaging: dust cover
Materials
• Cage
• Base material: copper alloy
• Plating: nickel or tin
• Light pipe: optical grade polycarbonate
• Heat sink: aluminum alloy
• Heat sink clip: stainless steel
• Dust cover: thermoplastic
• EMI ground tabs: stainless steel
• Connector
• Contact base material: copper alloy
• Contact plating: gold on mating area; gold or matte tin on termination
• Housings: glass reinforced, lead-free solder reflow process
compatible thermoplastic, UL94V-0 rated
Temperature Rating
• Operating temperature: -55 °C to +85 °C
• Storage temperature: -55 °C to +105 °C
Configurations
(Rows x Ports per row)
• 1x1
• 1x2
• 1x4
• 2x1
• 2x2
• 2x4
Options
• Light pipes
• Heat sink (standard fin for final cage combo)
• Enhanced EMI performance cage
• Dust cover
• 1x6
• 2x6
1x4 SFP cage with heat sinks
U77-E4124-2041
2x2 SFP Combo
U78-B2127-00121
6
