100G QSFP28 to 4×25G SFP28 Passive DAC Breakout Cable: 100G-PDAC-QSFP-SFP
100G QSFP28 to 4×25G SFP28 Breakout Overview
Our 100G QSFP28 to 4×25G SFP28 Passive DAC Breakout Cable enables seamless connectivity between 100G switches and 25G server interfaces. Supporting multi-rate operation from 44.8 to 112.2 Gbps with lengths from 1m to 5m, this AWG 26 twinax breakout provides cost-effective 100G to 25G migration. Operating at 0-70°C with zero power consumption, ideal for leaf-server deployments.
- Cable Type: Passive Direct Attach Cable (PDAC)
- Cable Configuration: Breakout (1 to 4)
- Connector Type: QSFP28 to 4×SFP28
- Supported Data Rate: 44.8 Gbps - 112.2 Gbps
- Maximum Distance: 5 m
- AWG (Wire Gauge): AWG30 (1-3.5m) | AWG28 (2-3m) | AWG26 (5m)
- DDM/DOM: Supported
- Temperature Range: Standard 0°-70°C
- MTBF: 1000000 hours
100G to 4×25G Breakout DAC Pricing
SKU:100G-PDAC-QSFP-SFP
Made to Order - 2 Weeks100G QSFP28 to 4×25G SFP28 Passive DAC Breakout Cable Specification
Cable Type | Passive Direct Attach Cable (PDAC) |
Cable Configuration | Breakout (1 to 4) |
Connector Type | QSFP28 to 4×SFP28 |
Supported Data Rate | 44.8 Gbps - 112.2 Gbps |
Supportet Ethernet Applications | 100G Ethernet (103.125 Gbps) |
Supported Fiber Channel Applications | 4x 32G Fiber Channel (112.2Gbps) |
Supported InfiniBand Applications | InfiniBand EDR (100 Gbps) |
Maximum Distance | 5 m |
Media Type | Twinax Copper Cable |
AWG (Wire Gauge) | AWG30 (1-3.5m) | AWG28 (2-3m) | AWG26 (5m) |
DDM/DOM | Supported |
Temperature Range | Standard 0°-70°C |
MTBF | 1000000 hours |
Compliance | CE, RoHS, QSFP28 MSA, SFP28 MSA, SFF-8402, SFF-8431, SFF-8665, QDR InfiniBand, InfiniBand EDR |
100G QSFP28 to 4×25G SFP28 Passive DAC Breakout Cable Datasheet
v2Complete technical specifications and product details
100G QSFP28 to 4×25G SFP28 Passive DAC Breakout Cable Description
Our EDGEOPTIC 100G-PDAC-QSFP-SFP is a multi-vendor compatible 100G QSFP28 to 4×SFP28 passive direct attach copper breakout cable designed for flexible high-bandwidth connectivity in modern data center environments. The 100G-PDAC-QSFP-SFP cable features a breakout configuration with one QSFP28 connector splitting into four independent SFP28 connectors, enabling efficient port utilization by connecting a single 100G switch port to four separate 25G devices such as servers, storage systems, or aggregation points.
The cable supports multi-rate operation from 44.8 to 112.2 Gbps across all four channels, accommodating the demanding bandwidth requirements of next-generation data center architectures. For Ethernet deployments, the cable handles 25G Ethernet per channel with 100G Ethernet aggregate throughput at 103.125 Gbps, supporting modern server connectivity where 25G NICs have become the standard. Fiber Channel support includes 4×32G FC at 112.2 Gbps aggregate throughput, making the cable ideal for high-performance storage area network connectivity. Additionally, the cable supports InfiniBand EDR at 100 Gbps for high-performance computing and machine learning infrastructure.
As a passive DAC solution, the 100G-PDAC-QSFP-SFP requires no external power and introduces zero latency to signal transmission, making it ideal for latency-sensitive applications. The cable construction utilizes high-quality twinax copper with optimized wire gauges for each length range: AWG30 for 1 to 3.5 meters, AWG28 for 2 to 3 meters, and AWG26 for the 5-meter variant. This progressive wire gauge selection ensures optimal signal integrity at 25 Gbps per lane while maintaining practical cable flexibility for installation.
The breakout configuration is particularly valuable for server connectivity in leaf-spine architectures, where 100G ToR switches need to connect to multiple 25G server NICs. This approach maximizes expensive 100G port utilization while providing each server with dedicated 25G bandwidth. The passive design eliminates power consumption concerns entirely and reduces overall system power budget.
The electrical interface conforms to QSFP28 MSA, SFP28 MSA, SFF-8402, SFF-8431, and SFF-8665 specifications, ensuring broad compatibility with standard host systems from multiple equipment vendors. Our breakout DAC cables can be encoded for compatibility with over 80 different equipment brands. The cable incorporates DDM/DOM (Digital Diagnostic Monitoring) functionality, providing real-time diagnostic data through the MSA-compatible interface.
The cable operates within a 0 to 70°C temperature range with an MTBF rating of 1,000,000 hours, delivering long-term reliability for mission-critical 100G infrastructure. Standards compliance includes QDR InfiniBand and InfiniBand EDR specifications.
Our 100G QSFP28 to 4×SFP28 passive breakout DAC is CE/RoHS certified and compliant with product safety standards. Because our focus is providing top quality service, we perform comprehensive quality checks before delivery including electrical parameter measurements, connector inspection tests, and EEPROM memory data validation tests.