25 G - SFP28
Multi Mode / 100 M / Cisco
$95.00
Sale price
$95.00
Regular price
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25 G - SFP28
$95.00
Sale price
$95.00
Regular price
SFP28 — 25G. 25G server access — the current default for new server NICs.
Overview
SFP28 (SFF-8402) raises the SFP+ envelope to 25.78 Gbps NRZ. Mechanically backward-compatible — an SFP+ module fits and links at 10G inside an SFP28 cage — so existing cabling and panels carry over to a 25G refresh.
Key specifications
| Speed | 25G |
|---|---|
| Electrical interface | 1 lane × 25.78125 Gbps NRZ SerDes |
| Signalling | 64B/66B encoded NRZ |
| FEC | RS-FEC (528,514) required and on by default on most platforms |
| Typical power draw | 1.0 W – 2.5 W per module |
| Connectors | LC duplex, SFP28 DAC, MPO-12 (SR4 variants on QSFP28 host with breakout) |
| MSA / standards | SFF-8402 (mechanical / electrical); SFF-8472 rev 12 (DDM) |
| Introduced | 2014 (IEEE 802.3by) |
Available variants
| Part number | Standard | Wavelength | Fiber | Reach | Notes |
|---|---|---|---|---|---|
NAP-SFP28-SR |
25GBASE-SR | 850 nm | MM OM3/4 | 70 / 100 m | VCSEL, RS-FEC required |
NAP-SFP28-LR |
25GBASE-LR | 1310 nm | SM | 10 km | DFB |
NAP-SFP28-ER |
25GBASE-ER | 1310 nm | SM | 30–40 km | EML |
NAP-SFP28-BX-D/BX-U |
25G BiDi | 1270/1330 nm | SM, single strand | 10 km | Single-fiber pair |
NAP-SFP28-DAC-1M…5M |
25G DAC | — | Twinax copper | 1–5 m | Passive direct attach |
NAP-SFP28-AOC-10M…30M |
25G AOC | 850 nm | — | 10–30 m | Active optical |
Coded for these platforms
Every NetAPI SFP28 module is OEM-coded for the target switch and validated against current production firmware. Common targets:
- Cisco Nexus 9300-FX/FX2/FX3, Catalyst 9300X
- Juniper QFX5110/5120/5200/5220
- Arista 7050X3, 7060X, 7280R3
- Dell S5232F/S5248F/S5296F, Z9332F
- NVIDIA Spectrum-2/3/4, ConnectX-6/7 NICs
Recommended for
- Modern 25G server NICs (Intel E810, Mellanox ConnectX-6/7, Broadcom NetXtreme)
- ToR-to-server runs in greenfield data centers
- Storage fabric (NVMe-oF, 25G iSCSI)
- 4×25G breakout from 100G QSFP28 spine ports
Engineering notes
- 25GBASE-SR reaches only 100 m on OM4 — significantly shorter than 10GBASE-SR (400 m). Plan around it for longer runs in retrofit deployments.
- Most platforms default to RS-FEC (528,514) on at 25G — if you see CRC errors with a stable link, FEC mismatch is the first thing to check.
Need a coding or reach you don't see? NetAPI custom-codes against the full Cisco, Juniper, Arista, Dell, HPE, Aruba, Palo Alto, Huawei, and NVIDIA OUI sets. Contact us with your switch model and we'll quote.