SFP28
25G Transceivers
The ZTT 25G SFP28 range is optimised for 5G fronthaul and data centre access: SR / LR (100 m), CWDM6 / LWDM12 / MWDM12 (10 km), DWDM80 dense WDM, 15 km and 40 km extended reach, plus BIDI 10 / 15 / 20 / 40 km on single-fibre.

Features & Characteristics
- ▪SFP28 form factor
- ▪25G NRZ electrical
- ▪Industrial (I) and commercial (C) temperature options
- ▪In-house hardware, coaxial and structural design
- ▪COB packaging and silicon-chip capability
- ▪Automated production platform with SI simulation
- ▪5 SMT + 5 transceiver assembly lines
- ▪Capacity: 150K modules/month at ≤ 25G, 70K/month at ≥ 100G
- ▪Full 1G–400G in-house test system (HT/LT, burn-in)
Applications
- ▪5G fronthaul (CPRI / eCPRI)
- ▪25G data centre access
- ▪Metro aggregation
- ▪Data centre spine and leaf interconnect
- ▪Enterprise switch uplinks
- ▪Metro / access aggregation
- ▪5G fronthaul and midhaul
- ▪Carrier backbone transport
Available variants
The following 12 SKUs make up the 25g transceivers range. Contact us for spec sheets, sample availability and volume pricing on any variant.
| Port | Distance | Wavelength | Temp | MPN | Power | TX min (dBm) | TX max (dBm) | Sensitivity (dBm) |
|---|---|---|---|---|---|---|---|---|
| Dual LC | 100 m | 850 nm | I/C | ZMLP-850SRNx | < 1.2 W | -8.4 | 2.4 | -9.5 |
| Dual LC | 100 m | 1310 nm | I/C | ZMLP-131LRNx | < 1.5 W | -4.0 | 2.0 | -13.0 |
| Dual LC | 100 m | CWDM6 | I/C | ZMLP-1xxLRNx | < 1.5 W | 2.0 | 7.0 | -14.0 |
| Dual LC | 10 km | LWDM12 | I/C | ZMLP-LxxLRNI | < 2.0 W | 0.0 | 6.0 | -14.0 |
| Dual LC | 10 km | MWDM12 | I/C | ZMLP-MxxLRNI | < 2.0 W | 2.0 | 7.0 | -14.0 |
| Dual LC | 10 km | DWDM80 | I/C | ZMLP-CxxERNx | < 2.0 W | -1.0 | 5.0 | -14.5 |
| Dual LC | 15 km | 1310 nm | I/C | ZMLP-131LONx | < 1.5 W | 0.0 | 6.0 | -14.0 |
| Dual LC | 40 km | 1310 nm | I/C | ZMLP-131ERNx | < 1.8 W | 0.0 | 6.0 | -19.0 |
| BIDI LC | 10 km | 1270 / 1330 nm | I | ZMLP-B03LRNI / ZMLP-B30LRNI | < 1.5 W | -4.0 | 2.0 | -13.0 |
| BIDI LC | 15 km | 1270 / 1330 nm | I | ZMLP-B03LONI / ZMLP-B30LONI | < 1.5 W | 2.0 | 7.5 | -14.5 |
| BIDI LC | 20 km | 1270 / 1330 nm | I | ZMLP-B03L1NI / ZMLP-B30L1NI | < 1.5 W | 3.0 | 7.5 | -14.5 |
| BIDI LC | 40 km | 1270 / 1310 nm | I | ZMLP-B2CERNI / ZMLP-BC2ERNI | < 1.8 W | -3.0 | 6.0 | -19.0 |
Temperature: C = commercial, I = industrial, E = extended, V = VCSEL. "x" in an MPN denotes I/C build option.
Other transceiver families
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400G Transceivers
400G QSFP-DD modules from 850nm short-reach SR8 to 40 km ER8 — including DR4, FR4 and LR8 for hyperscale and data centre interconnect.
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200G Transceivers
200G QSFP56 AOC for short in-rack interconnects up to 30 m at 850 nm.
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100G Transceivers
Full 100G QSFP28 portfolio: DAC, AOC, SR4, CWDM4, LR4, ER4 and 80 km ZR4 — plus 10 km / 30 km / 40 km reach options for metro and DCI.
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10G Transceivers
Broad 10G SFP+ family — RJ45 copper, 850 / 1310 / 1550 nm optical, CWDM18, DWDM48, tunable and BIDI variants covering 100 m to 100 km.
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2.5G Transceivers
2.5G SFP modules for legacy access and mobile backhaul — 15 km 1310 nm and 15 km BIDI 1310 / 1550 nm variants.
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1.25G Transceivers
Gigabit SFP modules for access, enterprise and metro — RJ45 copper (100 m), 10 / 20 km 1310 nm, 80 km 1550 nm and BIDI 10 / 20 / 80 km.
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