| NO. | Brand | Compatible P/N | Transceiver Type |
| 1 | Cisco | QSFP-100G-CU5M | |
| 2 | Arista Networks | CAB-Q-Q-100G-5M | |
| 3 | Juniper | QFX-QSFP28-DAC-5M | |
| 4 | Brocade | 100G-Q28-Q28-C-0501 | |
| 5 | Dell | DAC-Q28-100G-5M | |
| 6 | Huawei | QSFP28-100G-CU5M |
| Juniper Compatible |
QFX-QSFP28-DAC-5M
|
Vendor Name | HYTOPTODEVICE |
| Connector | QSFP28 to QSFP28 | Max Data Rate | 100Gbps |
| Cable Length | 5m (16ft) | Wire AWG | AWG 26 |
| Cable Type | Passive Twinax | Power Consumption | ≤0.5W |
| Media | Copper | Operation Temperature | 0~ 70 °C (32 to 158°F) |
| Jacket Material | PVC(OFNR) | Protocols | QSFP28 MSA, SFF-8662, IEEE 802.3 |
| Minimum Bend Radius | 50mm | Application | 100 Gigabit Ethernet |
Usage Guidelines & Best Practices
Mandatory Port Setting: Host QSFP28 port must enable 100GBASE-CR4 mode; link negotiation failure will happen if forced to optical mode.
Cabling Requirements: Do not exceed the minimum 50mm bend radius, avoid sharp folding, heavy extrusion or long-term tension on the cable assembly.
Port Installation Standard: Works only with standard QSFP28 100G ports; cannot be inserted into SFP+ or XFP slots. Disable the host’s third-party transceiver lock policy in advance if required.
Maintenance Specification: Hot‑swap supported, grip the pull tab instead of pulling the cable body during plug/unplug to prevent internal conductor damage.
Operating Environment: This commercial-grade cable operates reliably within 0℃‑70℃; avoid installation beside high-heat power modules.
For detailed operation instructions, please refer to the User Guide.
Full Compatibility List & Supported Devices
Built on universal MSA open standards, this 100G QSFP28 passive copper twinax cable can interoperate with mainstream network brands including Arista, H3C, Juniper, Dell, NVIDIA Mellanox and more, for mixed-vendor rack stacking and server fabric expansion.
Q1: What is the maximum usable length for HYTOPTODEVICE passive direct attach copper cable at 100G speed? A: The industry maximum reach for 100GBASE-CR4 passive QSFP28 DAC is 5 meters. It is limited by copper insertion loss and crosstalk at 25G per lane, so HYTOPTODEVICE passive twinax DACs are offered in 0.5m,1m,1.5m,2m,3m,5m options within this limit.
Q2: Will running this passive direct attach copper cable longer than rated length trigger unstable links on Juniper switches? A: Yes, link failures or CRC errors are very likely. Exceeding rated length pushes signal loss past the chip’s equalization budget. HYTOPTODEVICE only supplies DACs matched to the labeled length to avoid such instability.
Q3: Do short variants of HYTOPTODEVICE passive direct attach copper cable bring unwanted signal reflection risks? A: Properly manufactured short passive DACs do not create reflection problems. HYTOPTODEVICE controls impedance tightly at 100Ω differential, and our short variants pass return loss testing to keep reflections within MSA specs.
Q4: Can end users reflash the EEPROM profile of HYTOPTODEVICE passive direct attach copper cable locally? A: Standard off-the-shelf HYTOPTODEVICE DACs are pre-coded and locked for stability. We support customer requirements. We can supply coding tools, software and related services, and even provide remote guidance for you.
Q5: Can Junos OS firmware upgrades break compatibility with third-party passive direct attach copper cable? A: It happens occasionally on major OS releases when vendors tighten EEPROM validation rules. HYTOPTODEVICE keeps EEPROM profiles updated and validates against mainstream firmware versions to reduce this risk. We can assist customers with recoding when necessary.
Q6: What technical information do I share with HYTOPTODEVICE to get a Juniper-compatible passive direct attach copper cable pre-configured correctly? A: We need switch brand, exact model, OS version, and required PN to match the EEPROM. Share these details with HYTOPTODEVICE, and we will pre-test the profile before dispatch.
Q7: What shielding construction protects HYTOPTODEVICE passive direct attach copper cable from lane crosstalk? A: Individually shielded twinaxial (SFP/QSFP twinax) copper pairs surrounded by an overall braid and foil shield prevent near-end and far-end crosstalk. This dual-layer design suppresses crosstalk and EMI for HYTOPTODEVICE high-speed DACs.
Q8: Does HYTOPTODEVICE perform full high-frequency signal integrity validation for every batch of passive direct attach copper cable before shipment? A: Yes, every production batch runs TDR, insertion loss, return loss and crosstalk sampling. HYTOPTODEVICE rejects units out of spec to guarantee consistent signal integrity for 100G links.
Q9: How durable are the pull tabs fitted on HYTOPTODEVICE passive direct attach copper cable for frequent hot plug cycles? A: Our pull tabs use reinforced plastic overmolding and strain relief. Under normal hot-swap operation, they resist breakage; HYTOPTODEVICE designs them for repeated plug/unplug in dense data center racks.
Q10: Is the outer jacket material of HYTOPTODEVICE passive direct attach copper cable compliant with data center fire codes? A: Yes, the jacket material meets LSZH low-smoke zero-halogen requirements, suitable for data center aisle deployment. All HYTOPTODEVICE DAC jackets follow standard fire safety specifications.
Q11: How much cost saving can I achieve by replacing fiber optic links with HYTOPTODEVICE passive direct attach copper cable? A: Typically you can save 40%–70% versus paired QSFP28 optics plus fiber patch cords for short rack links. HYTOPTODEVICE passive DAC removes optical component costs for same-rack leaf-spine connections.
Q12: Which deployment scenario makes HYTOPTODEVICE passive direct attach copper cable a better pick than transceivers plus fiber patch cords? A: Pick passive DAC for intra-rack links ≤5m where low latency, zero power and lower cost matter. Choose fiber optics when runs exceed 5m or you need isolation between racks or buildings.
Q13: What warranty and RMA protection is included with HYTOPTODEVICE Juniper compatible passive direct attach copper cable? A: HYTOPTODEVICE provides a 5-year warranty for manufacturing defects. If pre-coded cables fail compatibility due to our EEPROM profile, we support free RMA replacement after troubleshooting confirmation.
Q14: What lead time and MOQ flexibility do you offer for custom coded HYTOPTODEVICE passive direct attach copper cable? A: Standard stocked DACs ship quickly. Custom EEPROM coded orders have flexible MOQ, we try our best to accommodate customer demands. Contact HYTOPTODEVICE sales for exact MOQ and schedule for your custom project.
Q15: Are HYTOPTODEVICE Juniper compatible passive direct attach copper cable certified to RoHS, CE, FCC and MSA standards? A: Yes, all HYTOPTODEVICE QSFP28 passive DAC cables are MSA compliant, RoHS, CE and FCC certified, suitable for global data center and enterprise network deployment.
Packaging & Custom OEM Solutions
ESD Protection & Fast Shipping: Every transceiver is sealed in an ESD-safe bag and ready for same-day dispatch from stock.
Custom OEM & Branding: We provide logo printing, private labeling, and custom packaging to help distributors and integrators build their brand—no factory investment required.
Why Network Engineers Choose HYTOPTODEVICE
HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.
“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia
Quality Certification & Compliance
At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, our processes ensure global compliance and reliability.
We adhere to rigorous standards for our SFP modules and network solutions:
ISO 9001: Certified quality management and production consistency.
CE & FCC: Fully compliant for seamless Global Market Access.
RoHS: Committed to environmental responsibility and hazardous material control.
Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.
Certified Quality. Global Standards. Guaranteed Performance.
