100G SR1.2 IS BACK
When the Marvell DSP behind QSFP28 100G SR1.2 hit end-of-life at the end of last year, the market lost a part it had come to depend on. Data center builds had standardized on it for 100G-to-400G connectivity over multimode. Then the part went away.
The replacement chip shipped. We built samples, ran them through our lab, and approved them for production. We’re supporting this solution again.
What changed under the hood
The original 100G SR1.2 ran a Marvell DSP that hit end-of-life. The new generation runs a Broadcom DSP. 400G SR4.2 optics still run Marvell — so a 400G-to-4x100G breakout now has a different chip vendor on each end of the link. That’s the exact scenario worth proving out, so we proved it. Broadcom SR1.2 to Marvell SR4.2, on live hardware in our lab, before we approved the part.
If you qualified the previous generation, this is a new build. We’re telling you that up front so your engineers can plan accordingly — and so they know what it was tested against.
What you can tell your customers
QSFP28 100G SR1.2 — 100G over a single multimode fiber pair, two fibers instead of eight.
150m on OM5, 100m on OM4, 70m on OM3.
Lab-validated interop with our 400G SR4.2 for 4x100G breakout.
Coded for Cisco, Arista, Dell, Extreme, HP, Juniper, NVIDIA/Mellanox, Palo Alto, and Ruckus.
At no additional cost.
Shipping now.
For the engineers designing the BOM
On the cabling: the QSFP28 SR1.2 is duplex LC and carries 100G on two fibers. The 400G SR4.2 side is MPO. A 400G-to-4x100G breakout runs an MPO harness out to four duplex LC pairs, and we supply that cable too — so the whole link is one BOM and one vendor.
We tested this across a wide range of platforms in our lab. We code in-house, so if you need a platform or configuration that isn’t on this list, we can usually build it. Our Cisco and NVIDIA-certified pre-sales engineers are available to work through the design with you before you commit to a spec.
Optics on both ends plus the MPO-to-4x-duplex-LC harness, supplied together.
Need a platform or configuration not on the list? We can usually build it.
Cisco and NVIDIA-certified engineers work through the design with you before you commit to a spec.
We sell through you, never around you.
GigaTech has been channel-only since day one. Your customer stays your customer. Reseller-only — we do not, have not, and will not sell direct to the end user. We’re the connectivity partner on your team, not another vendor competing for the account.