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QSFP28 Price

What is 100G QSFP28?

The 100GBASE-PSM4 QSFP28 transceiver is a parallel 100G single-mode optical transceiver with an MTP/MPO fiber strip connector. It uses 8 fibers (4 transmit and 4 receive), each with a transmission speed of 25Gbps, resulting in a total data rate of 100Gbps over 500 meters on the SMF.


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QSFP28 Price

What is a QSFP28?

QSFP28 is a hot-pluggable transceiver module designed for a 100G data rate. QSFP28 integrates 4 transmit and 4 receiver channels. “28” means each lane carries up to a 28G data rate. QSFP28 can do a 4x25G breakout connection, 2x50G breakout, or 1x100G depending on the transceiver used.

Using the SFP-25G-ER transceiver module, the maximum distance currently supported for 25G is 40 km. Other optics may be released in the future to support longer distances.

Using the SFP-25G-ER transceiver module, the maximum distance currently supported for 25G is 40 km. Other optics may be released in the future to support longer distances.

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The QSFP28 specification has only 4 electrical channels, which is not enough to support a 10-channel 10G electrical interface.

The QSFP28 specification has only 4 electrical channels, which is not enough to support a 10-channel 10G electrical interface.

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SFP28 ER -

SFP28 ER - "ER" means Extended Range. Used in conjunction with OS2 single-mode fiber, it can achieve up to 40km transmission.

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If the SFP+ optical module is inserted into the SFP28 port, the link transmission rate is 10Gbit/s.

If the SFP+ optical module is inserted into the SFP28 port, the link transmission rate is 10Gbit/s.

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The data transfer rate of SFP varies from 100Mbps to 4Gbps.

The data transfer rate of SFP varies from 100Mbps to 4Gbps.

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The transmission rates and standards of SFP and SFP+ are also different.

The transmission rates and standards of SFP and SFP+ are also different.

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The theoretical maximum transmission distance of 10G SFP+ AOC cable can reach 100m, which is usually used for switch-to-switch connection.

The theoretical maximum transmission distance of 10G SFP+ AOC cable can reach 100m, which is usually used for switch-to-switch connection.

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SFP28 LR -

SFP28 LR - "LR" means Remote. It mainly cooperates with OS2 single-mode fiber for long-distance transmission (up to 10km).

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SFP28 SR -

SFP28 SR - "SR" means Short Reach. It is mainly used with OM4 multimode fiber for data transmission over short distances (up to 100m).

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The optical module of QSFP56 package type can support 4x50G transmission to achieve 200G transmission rate.

The optical module of QSFP56 package type can support 4x50G transmission to achieve 200G transmission rate.

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SFP+ transceivers implement more circuitry on the motherboard rather than internally - it offloads some functions onto the motherboard, including signal modulation functions, MAC, CDR and EDC.

SFP+ transceivers implement more circuitry on the motherboard rather than internally - it offloads some functions onto the motherboard, including signal modulation functions, MAC, CDR and EDC.

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Both XFP connectors and SFP+ connectors are LC duplex. For example, XFP 10G 1310nm transceivers can communicate with SFP+ 10G 1310nm modules over LC duplex fiber optic cables.

Both XFP connectors and SFP+ connectors are LC duplex. For example, XFP 10G 1310nm transceivers can communicate with SFP+ 10G 1310nm modules over LC duplex fiber optic cables.

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The most significant change from QSFP+ and QSFP28 to QSFP56 is that QSFP56 undergoes a change from NRZ encoding to PAM4 encoding.

The most significant change from QSFP+ and QSFP28 to QSFP56 is that QSFP56 undergoes a change from NRZ encoding to PAM4 encoding.

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SFP28 and QSFP28 transceivers actually use different sizes and operating principles.

SFP28 and QSFP28 transceivers actually use different sizes and operating principles.

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A QSFP 100G can only support 4x 10G or 4x 25G electrical interface, can be used as 4x 10GbE or 4x 25GbE, but cannot be used as 10x 10GbE.

A QSFP 100G can only support 4x 10G or 4x 25G electrical interface, can be used as 4x 10GbE or 4x 25GbE, but cannot be used as 10x 10GbE.

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The MTP to 4x LC breakout cable consists of an 8-pin MTP connector for 40G QSFP+ on one end and 4 duplex LC connectors for 10G SFP+ on the other end.

The MTP to 4x LC breakout cable consists of an 8-pin MTP connector for 40G QSFP+ on one end and 4 duplex LC connectors for 10G SFP+ on the other end.

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