100% Traffic Tested 100G QSFP28 ZR4 BiDi 80km Transceiver — FOT Fiber Optic

Click to configure the module — your selection is carried into the quote email.

100G QSFP28 ZR4 BiDi 80km Transceiver

Name: 100G QSFP28 ZR4 BiDi 80km Transceiver
Brand: FOT Fiber Optic
SKU: FOT-TR-100G-Q28-ZR4BD
Availability: InStock

SKU: FOT-TR-100G-Q28-ZR4BD · 100G · QSFP28

100 Gb/s ZR4 BiDi in QSFP28 — LAN-WDM, single fibre, 80 km over OS2 single-mode (single fibre). Vendor-coded and traffic-tested on a live switch before shipment.

100 Gb/s4 × 25G NRZ
80 kmMax reach
LAN-WDM, single fibreWavelength
≤ 6 WMax power

Coding

Generic / MSANVIDIA / MellanoxCiscoAristaJuniperHuawei

Request a Quote Request Datasheet

Ships worldwide

Free qualification samples

3-year warranty

Product Overview

80 km of 100G on ONE strand of fibre — halves leased-fibre cost on metro routes where strands are the expensive part.

Built to 100G ZR4 BiDi (single-fibre bidirectional), this module presents a Simplex LC optical interface and runs over OS2 single-mode (single fibre). Every unit is programmed to your platform's vendor coding, powered up on a live switch and traffic-tested end-to-end before it is packed — so it links up on first insertion rather than throwing an “unsupported transceiver” message at 2 a.m.

Full DDM/DOM telemetry is implemented, so per-lane transmit and receive power, laser bias and case temperature are readable live from your NOS. Modules are serialized, individually bagged with dust caps, and covered by a 3-year warranty. OEM/ODM labelling and custom EEPROM profiles are available on request.

Compatible Part Number Cross-Reference

Tell us the switch model and we will confirm the exact OEM part this replaces, then code and traffic-test the module against that platform before shipping.

Technical Specifications

Optical & Electrical
Data Rate	100 Gb/s (4 × 25G NRZ)
Form Factor	QSFP28
Module Type	ZR4 BiDi
Wavelength	LAN-WDM, single fibre
Maximum Reach	80 km
Fiber Type	OS2 single-mode (single fibre)
Optical Connector	Simplex LC
Power Consumption	≤ 6 W

Compliance & Management
Standard	100G ZR4 BiDi (single-fibre bidirectional)
Management	CMIS / SFF-8636 as applicable to the form factor
DDM / DOM	Full real-time digital diagnostic monitoring
Hot Pluggable	Yes
RoHS	Compliant
Operating Temperature	0 °C to +70 °C (commercial); industrial grade on request
Warranty	3 years

Testing & Supply
Traffic Test	100% — every module linked on a live switch before shipment
BER Verification	Verified end-to-end per unit
Vendor Coding	Programmed to your platform at manufacture; mixed coding available
Traceability	Serialized; serial links to test record and production batch
Test Report	Available per order; sample reports supplied for tenders
Lead Time	Stock items ship in 2–3 days; coded builds 5–7 days
Sample Policy	Free samples available for qualification before volume orders

Ordering Information

Part Number	Configuration	Reach	Availability
FOT-TR-100G-Q28-ZR4BD	ZR4 BiDi	80 km	In stock
FOT-TR-100G-Q28-ZR4BD-NVID	ZR4 BiDi · coded for NVIDIA / Mellanox	80 km	Build to order
FOT-TR-100G-Q28-ZR4BD-CISC	ZR4 BiDi · coded for Cisco	80 km	Build to order
FOT-TR-100G-Q28-ZR4BD-ARIS	ZR4 BiDi · coded for Arista	80 km	Build to order
FOT-TR-100G-Q28-ZR4BD-JUNI	ZR4 BiDi · coded for Juniper	80 km	Build to order

Need a wavelength, channel or coding that is not listed? Custom builds ship in 5–7 days — note it on your RFQ.

Platform Compatibility

Every module is EEPROM-programmed at the factory to the vendor coding you specify, so the host recognises it natively — no “unsupported transceiver” warnings and no console workarounds. Mixed coding (a different vendor at each end) is available for inter-vendor links.

Generic / MSANVIDIA / MellanoxCiscoAristaJuniperHuaweiHPEDellExtreme

Quality & What's in the Box

100% Traffic Tested

Every module is linked on a live switch and BER-verified end-to-end before packing.

Serialized & Traceable

Serial number links to the test record, coding profile and production batch.

Free Samples

Qualify the module on your own platform before committing to a volume order.

Packaging

Individually bagged with dust caps and ESD protection, packed in export cartons.

Typical Applications

Data Center Spine & Leaf

High-radix switching fabrics where port density and power per bit decide the design.

AI / GPU Clusters

Rail-optimised accelerator fabrics running InfiniBand or RoCE at scale.

Metro & DCI

Campus backbone and data-centre interconnect over leased or owned dark fibre.

Enterprise & Storage

Core uplinks, SAN fabrics and aggregation for campus and enterprise networks.

Frequently Asked Questions

What reach will I actually get on OS2 single-mode?

This module is specified to 80 km. Real-world reach depends on your channel loss budget — every mated connector pair costs roughly 0.3 dB and every splice about 0.1 dB. Measure the installed channel rather than assuming the map distance, and keep 2–3 dB of margin for ageing and future repairs.

Do I order these in pairs?

Yes — BiDi modules are directional. Each link needs one module of each wavelength direction (for example TX 1270 / RX 1330 at one end and TX 1330 / RX 1270 at the other). Order in matched pairs and label the ends; two modules of the same direction will not link.

Can you code these for my switch vendor?

Yes. We program the EEPROM at manufacture for NVIDIA/Mellanox, Cisco, Arista, Juniper, Huawei, HPE, Dell, Extreme and generic MSA. Specify the platform on your RFQ; mixed coding (a different vendor at each end) is routine for inter-vendor links.

Do you supply test reports and samples?

Free samples are available so you can qualify the module in your own environment before committing to volume. Per-order test reports are supplied on request, and sample reports can be provided for tender documentation.

Related 100G Products

Request a quote for this part

Tell us the platform and the quantity. An engineer checks the part against your switch and software version before quoting — if it will not work, we say so.

Goes to our engineers and the quotation desk together. Replies come from sales@topnetsystem.com, usually within one working day.