QSFP-DD

400G Transceivers

The ZTT 400G portfolio covers the full QSFP-DD range for hyperscale data centre and DCI applications: AOC and SR8 (850 nm) for in-row links, DR4 (500 m) and FR4 CWDM4 (2 km) for pod interconnect, and LR8 / ER8 LWDM8 for 10 km and 40 km reach.

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400G Transceivers — ZTT optical transceiver tier

Features & Characteristics

  • ▪QSFP-DD form factor
  • ▪8× 50G PAM4 electrical lanes
  • ▪CMIS-compliant management
  • ▪In-house hardware, coaxial and structural design
  • ▪COB packaging and silicon-chip capability
  • ▪Automated production platform with SI simulation
  • ▪5 SMT + 5 transceiver assembly lines
  • ▪Capacity: 150K modules/month at ≤ 25G, 70K/month at ≥ 100G
  • ▪Full 1G–400G in-house test system (HT/LT, burn-in)

Applications

  • ▪400G ToR / spine data centre interconnect
  • ▪AI/ML cluster fabric
  • ▪Metro DCI up to 40 km
  • ▪Data centre spine and leaf interconnect
  • ▪Enterprise switch uplinks
  • ▪Metro / access aggregation
  • ▪5G fronthaul and midhaul
  • ▪Carrier backbone transport

Available variants

The following 6 SKUs make up the 400g transceivers range. Contact us for spec sheets, sample availability and volume pricing on any variant.

PortDistanceWavelengthTempMPNPowerTX min (dBm)TX max (dBm)Sensitivity (dBm)
AOC1–30 m850 nmCZAQD-850xxPC< 9.0 W///
MPO100 m850 nm SR8CZMQD-850S8PC< 9.0 W-6.54.0-3.4
MPO500 m1310 nm DR4CZMQD-131DRPC< 8.0 W-2.94.0-3.9
MPO2 kmCWDM4 FR4CZMQD-CDMFRPC< 12.0 W-3.24.4-4.6
Dual LC10 kmLWDM8 LR8CZMQD-LDMLRPC< 12.0 W-2.85.3-7.6
Dual LC40 kmLWDM8 ER8CZMQD-LDMERPC< 12.0 W-0.65.6-17.1

Temperature: C = commercial, I = industrial, E = extended, V = VCSEL. "x" in an MPN denotes I/C build option.

Other transceiver families

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QSFP56

200G Transceivers

200G QSFP56 AOC for short in-rack interconnects up to 30 m at 850 nm.

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QSFP28

100G Transceivers

Full 100G QSFP28 portfolio: DAC, AOC, SR4, CWDM4, LR4, ER4 and 80 km ZR4 — plus 10 km / 30 km / 40 km reach options for metro and DCI.

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SFP28

25G Transceivers

25G SFP28 modules covering 100 m SR, LR, CWDM6, LWDM12, MWDM12 and DWDM80 — plus 15 / 40 km reach and BIDI variants for 5G fronthaul.

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SFP+

10G Transceivers

Broad 10G SFP+ family — RJ45 copper, 850 / 1310 / 1550 nm optical, CWDM18, DWDM48, tunable and BIDI variants covering 100 m to 100 km.

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SFP

2.5G Transceivers

2.5G SFP modules for legacy access and mobile backhaul — 15 km 1310 nm and 15 km BIDI 1310 / 1550 nm variants.

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SFP

1.25G Transceivers

Gigabit SFP modules for access, enterprise and metro — RJ45 copper (100 m), 10 / 20 km 1310 nm, 80 km 1550 nm and BIDI 10 / 20 / 80 km.

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