FIM37000/173 Fujitsu Compatible 100GBASE-ZR4 QSFP28 Transceiver
Fujitsu compatible FIM37000/173 - Key Features
- Compatibility: Fujitsu
- Media Type: Single-Mode Fiber (SMF)
- Connector: Double LC/UPC
- Fiber Count: Duplex
- Maximum Distance: 80 km
- Guaranteed Link Budget: 30 dB
- Tx Wavelength: 1310 nm
- Supported Data Rate: 103.125 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
Fujitsu FIM37000/173 Price
SKU:100G-QSFP28-80-MS
In Stock - Ships Next Business DayFujitsu compatible FIM37000/173 Specifications
Form Factor | QSFP28 |
Modulation | NRZ (Non-Return to Zero) |
Media Type | Single-Mode Fiber (SMF) |
Connector | Double LC/UPC |
Fiber Count | Duplex |
Maximum Distance | 80 km |
Guaranteed Link Budget | 30 dB |
TX Wavelength | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm) |
RX Wavelength | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm) |
Supported Data Rate | 103.125 Gbps |
Supportet Ethernet Applications | 100G Ethernet (103.125 Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
Transmitter Type | EML Laser |
Tx Wave Bandwidth | 4 LAN WDM Seperated 1310 nm Lanes (15.66 nm 1294.53 – 1310.19nm) (L0 Tx center 1295.56nm, L1 Tx center 1300.05nm, L2 Tx center 1304.58nm, L3 Tx center 1309.14nm) |
Average Launch Power (Min) Each Lane | 2 dBm |
Average Launch Power (Max) Each Lane | 6.5 dBm |
Extinction Ratio (Min) | 6 dB |
Receiver Type | SOA+PIN |
RX Wave Bandwidth | 4 LAN WDM Seperated 1310 nm Lanes (15.66 nm 1294.53 – 1310.19nm) (L0 Tx center 1295.56nm, L1 Tx center 1300.05nm, L2 Tx center 1304.58nm, L3 Tx center 1309.14nm) |
Average Receiver Sensitivity (Min) Each Lane | -28 dBm |
Average Receiver Sensitivity (Max) Each Lane | -7 dBm |
Receiver Overload | 5.5 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 6.5 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, Class 1 FDA and IEC60825-1 Laser Safety Compliant, IEEE 802.3ba, 100GBASE-ZR4, QSFP28 MSA, SFF-8636 (Management Interface for 4-lane modules), SFF-8665 |
Fujitsu compatible FIM37000/173 Datasheet
v3Complete technical specifications and product details
Fujitsu compatible FIM37000/173 Description
FIM37000/173 is Fujitsu Optical Components' high-power 100GBASE-ZR4 QSFP28, rated for 80 km on single-mode fiber. This is the +3.5 dBm OMA version — 1 dB above the standard /172 at +2.5 dBm OMA. EdgeOptic's compatible matches the original specs and operates on Fujitsu equipment as well as multi-vendor platforms.
Same form factor, same wavelength plan, same receiver, same 5.5 W draw, same 80 km rating. The only difference is TX output: /173 delivers +3.5 dBm OMA where the /172 provides +2.5 dBm. That extra 1 dB matters on routes with high splice loss, aging connectors, or links approaching the 30 dB budget limit. If the link budget sits comfortably at +2.5 dBm, the /172 suffices. For tighter margins, the /173 is the right choice.
Four LAN WDM channels — 1295.56, 1300.05, 1304.58, 1309.14 nm — 25G each, 103.125 Gbps total. Also runs OTU4 at 111.8 Gbps for OTN deployments — relevant in carrier transport environments using OTN framing for performance monitoring. Receiver sensitivity better than -26.9 dBm, 30 dB link budget on G.652. LC duplex, QSFP28 MSA, 5.5 W. CE/RoHS certified, commercial temp 0-70 °C. The EML lasers include integrated TEC cooling for wavelength stability across the full operating range.
RS-FEC (RS-528,514) must be enabled at the host — the module doesn't do FEC internally. Both ends need matching settings. For short runs under about 15 km, insert a 12 dB (or higher) LC attenuator to keep the receiver from overloading. This is particularly relevant with the /173's higher TX power — the overload threshold gets reached sooner on short spans compared to the /172.
Originally built for Fujitsu FLASHWAVE transport equipment, sharing a common platform design with Fujitsu's 100G ER4 module — convenient for field swaps on existing chassis. EdgeOptic's compatible is coded for multi-vendor use, operating in any QSFP28 slot where the host ASIC and software support ZR4 with RS-FEC. DOM readings (TX/RX power per channel, temperature, supply voltage) display normally via the standard I2C interface.
All vendor options are on the 100GBASE-ZR4 QSFP28 product page. Need help choosing between the /173 and /172 — Contact our sales team for link budget assistance.
Frequently Asked Questions
What is the difference between Fujitsu FIM37000/172 and FIM37000/173?
TX power. The /173 outputs +3.5 dBm OMA, the /172 is +2.5 dBm. Everything else is identical — same form factor, same wavelengths, same 5.5 W draw. If the link budget has less than 3 dB of margin at standard power, the /173 is the appropriate choice. Always verify OMA figures against Fujitsu's current FIM37000 datasheet before running calculations.
Can the FIM37000/173 replace a Fujitsu 100G ER4 module in the same slot?
It fits the same QSFP28 slot. The /173's higher TX power (+3.5 dBm OMA) provides extra margin if the ER4 link was already running tight. Two things to address: ZR4 requires host RS-FEC, which the ER4 port probably doesn't have enabled — reconfigure before swapping. And ZR4 draws 5.5 W versus ER4's typical 3.5 W — confirm the slot can handle the additional power.
Does the FIM37000/173 support OTU4 as well as 100G Ethernet?
Yes — dual-rate: 100GbE at 103.125 Gbps and OTU4 at 111.8 Gbps. The /173's extra TX power is particularly valuable for OTU4 on longer or lossier routes where the /172's standard output may not leave sufficient margin.