QSFP-100G-ZR4-S – 100G ZR4 QSFP28 – LC SMF – 80km Reach
24/mo Solds
Established Global IT Distributor
With over a decade of industry experience, we are a certified Cisco Partner delivering genuine enterprise networking hardware and trusted services to system integrators, ISPs, and enterprises worldwide.
QSFP-100G-ZR4-S Description
QSFP-100G-ZR4-S is a Cisco 100GBASE ZR4 QSFP28 optical transceiver for long-reach 100 Gigabit Ethernet links, used to extend Cisco QSFP28 host ports across up to 80 km of G.652 single-mode fiber. It uses duplex LC connectivity with four 25G optical lanes at 1295, 1300, 1304, and 1309 nm, requires host RS-FEC, supports DOM monitoring, and has a 5.5W maximum power consumption for BOMs that need the ZR4-S reach profile and Cisco optics interoperability boundary.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
QSFP-100G-ZR4-S |
|
Product type |
100GBASE ZR4 QSFP28 optical transceiver |
|
Form factor |
QSFP28 |
|
Data rate |
100G |
|
Connector type |
Duplex LC |
|
Fiber type |
G.652 single-mode fiber |
|
Maximum cable distance |
80 km depending on fiber and connector loss |
|
Wavelengths |
1295, 1300, 1304, and 1309 nm |
|
Required host FEC |
RS-FEC |
|
DOM support |
Yes |
|
Maximum power consumption |
5.5W |
Application Scenarios
Use QSFP-100G-ZR4-S when a Cisco 100G QSFP28 port must reach a remote site, regional data center, or service-provider aggregation point across a fiber path that can stay within the documented 80 km ZR4 envelope.
This optic fits spare planning where the cabling standard is duplex LC single-mode fiber and the bill of materials separates ZR4 from LR4, ER4-Lite, and 4W40 variants. The remote optic and host RS-FEC setting should be checked before the module is reserved for a maintenance window.
QSFP-100G-ZR4-S draws more power than many lower-reach QSFP28 optics in the same Cisco family. Platform, port, thermal, and software support should be validated in Cisco compatibility documentation before the quote is approved.
Product Comparison
|
Parameter |
QSFP-100G-ZR4-S |
QSFP-100G-4W40-I | ||
|---|---|---|---|---|
|
Product type |
100GBASE ZR4 QSFP28 transceiver |
100GBASE LR4 QSFP transceiver |
100GBASE ER4-Lite QSFP transceiver |
100GBASE 4W40 QSFP transceiver |
|
Connector type |
Duplex LC |
Duplex LC |
Duplex LC |
Duplex LC |
|
Fiber type |
G.652 single-mode fiber |
G.652 single-mode fiber |
G.652 single-mode fiber |
G.652 single-mode fiber |
|
Supported Ethernet rate |
100G |
100G |
100G |
100G |
|
Maximum cable distance |
80 km depending on fiber and connector loss |
10 km |
40 km with host FEC or 30 km without host FEC |
40 km with host FEC or 30 km without host FEC |
|
Wavelengths |
1295, 1300, 1304, and 1309 nm |
1295, 1300, 1304, and 1309 nm |
1295, 1300, 1304, and 1309 nm |
1295, 1300, 1304, and 1309 nm |
|
Host FEC relationship |
Requires host RS-FEC |
LR4 specification does not employ FEC |
Full 40 km reach requires host FEC |
Full 40 km reach requires host FEC |
|
Maximum power consumption |
5.5W |
4.0W |
4.5W |
4.5W |
|
Pull tab color |
Black |
Blue |
Red |
Red |
- In a QSFP-100G-ZR4-S vs QSFP-100G-LR4-S comparison, the main difference is reach: ZR4-S is the 80 km option while LR4-S is the 10 km LR4 optic.
- The QSFP-100G-ZR4-S difference from QSFP-100G-ER4L-S is also a reach and FEC planning issue, because ER4-Lite is documented for 40 km with host FEC or 30 km without host FEC.
- QSFP-100G-ZR4-S vs QSFP-100G-4W40-I is a ZR4 versus 4W40 comparison at the long-reach edge of the Cisco QSFP-100G family, with ZR4-S adding the 80 km class and a higher 5.5W power value.
- For which model to choose, match the Cisco SKU to the required LC single-mode reach, host FEC behavior, port support, and power profile shown in the table.
Selection Guide
1. Choose it for documented 80 km QSFP28 reach
Select QSFP-100G-ZR4-S when the project needs a Cisco 100G QSFP28 optic for duplex LC single-mode fiber and the measured path can meet the 80 km ZR4 loss assumptions.
2. Use shorter-reach optics when the fiber path does not need ZR4
Choose LR4-S, ER4L-S, or 4W40-I only when their documented distance class, host FEC behavior, and power draw match the design better than the 80 km ZR4-S optic.
3. Treat host RS-FEC as a purchase checkpoint
Do not approve this SKU only from connector and distance. The host device must support the required RS-FEC operation for QSFP-100G-ZR4-S.
4. Validate platform and thermal support
Confirm the Cisco platform, line card, QSFP28 port, software release, and thermal allowance before the transceiver is added to the final bill of materials.
Ordering Checklist
|
Verification Area |
Required Evidence |
Ordering Risk Controlled |
|---|---|---|
|
Host RS-FEC readiness |
Cisco platform, line card, QSFP28 port, software release, and RS-FEC support |
Keeps the order from reaching a host that cannot operate the required FEC mode |
|
Optical path budget |
Planned G.652 SMF route, connector count, and loss against the Cisco 80 km condition |
Catches paths where distance alone looks acceptable but connector loss could exceed the ZR4 envelope |
|
Patch-cord standard |
Duplex LC UPC single-mode patching at both ends |
Prevents last-minute changes to a connector plan that does not match Cisco’s cabling note |
|
Far-end optic match |
Cisco-supported optic-to-optic interoperability for the remote side |
Reduces turn-up risk on a long-distance 100G link |
|
Platform thermal review |
5.5W module power and 0 to 70 degrees C operating range checked against the host |
Flags the higher-power QSFP28 profile before the BOM is approved |
|
Warehouse identification |
Black pull tab plus ZR4-S part marking |
Separates this SKU from nearby blue, red, or green Cisco 100G QSFP optics during receiving |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | QSFP-100G-ZR4-S | Product type | 100GBASE ZR4 QSFP28 optical transceiver |
| Form factor | QSFP28 | Host interface | Cisco 100G QSFP28 port |
| Data rate | 100G | Connector type | Duplex LC |
| Fiber type | G.652 single-mode fiber | Required patch cord | Single-mode fiber with dual UPC LC connectors |
| Maximum cable distance | 80 km depending on fiber and connector loss | Wavelengths | 1295, 1300, 1304, and 1309 nm |
| Optical lane structure | Four 25G optical lanes | Coding | NRZ |
| Required host FEC | RS-FEC | DOM support | Yes |
| Maximum power consumption | 5.5W | Pull tab color | Black |
| Operating temperature range | 0 to 70 degrees C | Compatibility reference | Cisco Optics-to-Device Compatibility Matrix |
| Optics interoperability reference | Cisco Optics-to-Optics Interoperability Matrix | Reach note | Depends upon fiber and connector loss |
Get More Information
Need pricing, stock, or shipping details for the QSFP-100G-ZR4-S ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email sales@layer23-switch.com for a fast quotation.
Quality Certifications
Customer Reviews
Questions & Answers
-
What is QSFP-100G-ZR4-S used for on 80 km SMF links?
-
How far can QSFP-100G-ZR4-S reach?
-
Does QSFP-100G-ZR4-S require host FEC?
-
What duplex LC connector does QSFP-100G-ZR4-S use?
-
What wavelengths does QSFP-100G-ZR4-S use?
-
How is QSFP-100G-ZR4-S different from QSFP-100G-LR4-S?
-
When is QSFP-100G-ZR4-S the wrong SKU?
-
What G.652 fiber and 5.5 W power details matter for QSFP-100G-ZR4-S?
Warranty
Layer23-Switch.com offers genuine, high-quality ICT products at competitive wholesale prices—ensuring exceptional value without compromising quality.
All items are brand new, original, and factory-sealed.
Upon request, each unit can be fully tested and verified by a Cisco CCIE-certified engineer to ensure perfect working condition before shipment.
Our Cisco CCIE-certified experts provide free professional support via phone, email, online chat, or remote login—helping you deploy and troubleshoot with confidence.
If you are not satisfied with your purchase, you may request an exchange or full refund. Our customer service team will guide you through the return process quickly and smoothly. Visit Return Policy page for more information.
We support multiple secure payment and logistics options, backed by industry-leading verification:
Visit How to Pay page for more information
Extended, Worry-Free Warranty Coverage Factory New Sealed Enterprise Hardware:
· 3 Years Factory New Sealed
Visit Warranty Policy page for more information
Verify, plan, and comparewith confidence
Use practical tools to check device details, review lifecyclemilestones, and compare hardware before you buy.
Standard Services
Personalized Service, Superior Product Maintenance for Ultimate Satisfaction.
- Projects and Technical Support
- Easy Purchasing Supply
- Product Lifecycle Protection
- Exclusive F3 Team Support
Customized Support for Your Needs with CCIE, HCIE, HPE ASE, etc.
Worth giving them a try. You won’t regret it.
Layer23 has joined our short list of preferred suppliers.
We’ve built a solid purchasing relationship with Layer23 over multiple projects.