800G OSFP — 800G optical module product photo — 800G

800G OSFP Optical Transceiver (SR8/DR8/2×FR4)

800G OSFP carries eight 100 Gb/s PAM4 lanes in a form factor with more surface area than QSFP-DD — which is the point, because 800G optics dissipate 12–16 W and need the thermal headroom. SR8 covers 100 m of multimode, DR8 covers 500 m of parallel single-mode, and 2×FR4 covers 2 km on duplex LC. The choice is driven by fibre plant and switch thermal budget, not by speed alone.

OSFP MSA Type 2 hot-pluggable form factor, 8 × 100G PAM4 lanes
CMIS 5.0 common management interface with full DDM
SR8: 850 nm VCSEL, 60 m on OM3 / 100 m on OM4, MPO connector
DR8/2×FR4: 1310 nm EML transmitters over SMF up to 2 km
Compliant with IEEE 802.3ck / 802.3db and InfiniBand NDR

800G AI cluster leaf-spine fabrics
InfiniBand NDR switch-to-server links
Hyperscale data centre switch uplinks
Breakout to 2× 400G downstream devices

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Full Specifications

OSFP 800G modules

OSFP 800G modules
P/N	Product Description	Data Rate	Reach	Wavelength	Interface	Power (W)	Temp. (°C)
BLO800-SR8	OSFP 800G SR8	800G	60/100 m	850 nm	MPO-16 APC or 2× MPO-12 APC	≤ 12	0–70
BLO800-DR8	OSFP 800G DR8	800G	500 m	1310 nm	2× MPO-12 APC	≤ 16	0–70
BLO800-2FR4	OSFP 800G 2×FR4	800G	2 km	1271–1331 nm	2× duplex LC	≤ 16	0–70

All parameters are typical values at 25 °C unless otherwise stated. Datasheets and test reports available on request.

Trade Terms & Ordering Notes

MOQ	20 pcs per part number; 1-2 pcs evaluation samples
Trade terms	EXW, FOB, CIF. Custom trade terms upon request.
Payment	T/T 30% deposit, balance before shipment
Lead time	Samples 3-5 working days · Bulk 2-4 weeks
Warranty	3 years; RMA replacement for defective units
Packaging	ESD bag + individual box, 50 pcs per carton. Custom packaging solutions are acceptable as requested.
Shipping	DHL / FedEx / UPS / air or sea freight
OEM / ODM	Custom label and coding, MOQ 100 pcs.

Frequently asked questions

Why OSFP instead of QSFP-DD for 800G?

OSFP is taller and has a larger top surface, so it dissipates heat more effectively at 12–16 W per module. It also became the preferred form factor for AI fabrics. QSFP-DD800 exists, but high-density 800G deployments overwhelmingly standardise on OSFP.

What is the difference between SR8, DR8 and 2×FR4?

SR8 is 850 nm VCSEL over multimode, 60 m on OM3 and 100 m on OM4, MPO connectors. DR8 is 1310 nm parallel single-mode to 500 m, dual MPO-12. 2×FR4 uses two CWDM duplex LC pairs up to 2 km. Reach and fibre type decide it, not price.

How much power and cooling does an 800G module need?

Budget 12 W for SR8 and up to 16 W for DR8/2×FR4. On a 32-port 800G line card that is roughly 400–500 W of optics alone, so switch airflow, heatsink design and rack power must be planned together — not added afterwards.

Can I break out an 800G port into 2×400G?

Yes on platforms that support breakout, typically with a 2×DR4 or 2×FR4 style module feeding two 400G downstream links. Confirm the switch supports the specific branch mode and that both ends use compatible FEC settings.

Does 800G require FEC?

Yes. 800G PAM4 relies on RS(544,514) FEC and the link will not meet its BER target without it. The same FEC setting must be used at both ends; a mismatch shows up as a link that trains but never comes up clean.

Is 800G OSFP compatible with 400G OSFP ports?

Mechanically the cage is the same family, but the port must support 8×100G PAM4 and CMIS 5.0 management. Many 400G OSFP ports accept 400G modules only. Verify against the switch's transceiver support matrix before ordering.