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Finisar FTLX3912M331 DWDM high link budget XFP 1552.52nm
10 Gb/s class DWDM high link budget multirate XFP transceiver, 1552.52nm (ITU C31).
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTLX3912M331
- Family
- FTLX3912
- Category
- Fiber optic transceiver modules
- Datasheet
- FTLX3912M331 datasheet (PDF)
FTLX3912M331 specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTLX3912M331 |
| Product family | FTLX3912 |
| Form factor | XFP |
| Standards / application | DWDM multi-rate (SONET/SDH, 10GbE, FC) |
| Data rate | 8.5 to 11.3 Gb/s |
| Wavelength | C-band DWDM (Rx 1270–1600 nm) |
| Reach | High link budget; dispersion −300 to +800 ps/nm |
| Tx output power | −1 to +3 dBm |
| Rx sensitivity | −24 to −27 dBm depending on rate/BER |
| Rx overload / max input | −7 dBm |
| Extinction ratio | 8.2 dB min |
| Supply voltage | Vcc5 4.75–5.25 V |
| Operating temperature | 0 to 70 °C |
| Lifecycle | Legacy / end-of-life |
| Variant note | ITU channel 31 (family convention) |
Optical and electrical values are from the Finisar / Coherent family datasheet; temperature grade is per part number. Confirm critical values with us before ordering.
About the Finisar FTLX3912M331
The Finisar FTLX3912M331 (now a Coherent Corp. product, formerly II-VI) is a XFP DWDM high link budget multirate optical transceiver for 10 Gb/s class links at 1552.52nm (ITU C31) over Duplex SMF LC. It belongs to Finisar's FTLX3912 family, which has 5 orderable variants that differ by temperature grade, latch, receiver build or wavelength channel. This is a legacy Finisar part; we help buyers find remaining stock or a current Coherent alternative. Typical uses: 10G Ethernet, 10G Fibre Channel, SONET OC-192 / OTN and DWDM metro / DCI links.
- High Link Budget, Multi-Rate, DWDM XFP Optical Transceiver
FTLX3912M331: frequently asked questions
What is the Finisar FTLX3912M331?
The FTLX3912M331 is a Finisar XFP transceiver for DWDM high link budget multirate at 10 Gb/s class. Finisar is now part of Coherent Corp. (formerly II-VI), and the part number is unchanged. It is used for 10G Ethernet, 10G Fibre Channel, SONET OC-192 / OTN and DWDM metro / DCI links.
What is the maximum distance of the FTLX3912M331?
Share your link length and fibre type and we will confirm the reach of the FTLX3912M331 from the Finisar datasheet before you order.
What is the optical power budget of the FTLX3912M331?
Per the Finisar family datasheet, the FTLX3912M331 transmits −1 to +3 dBm and has a receiver sensitivity of −24 to −27 dBm depending on rate/BER. Maximum receiver input is −7 dBm.
Which fiber and connector does the FTLX3912M331 use?
The FTLX3912M331 works at 1552.52nm (ITU C31) over Duplex SMF LC. CWDM/DWDM optics must match the channel of your mux/demux port. Both ends of a link must use the same optical standard.
Will the FTLX3912M331 work in my Cisco, Juniper, Arista or HPE switch?
The FTLX3912M331 follows the XFP MSA, so it fits any matching port. It carries Finisar's own EEPROM programming; switches that check the module vendor may need a configuration setting or a vendor-branded optic. Send us your switch model and we confirm before dispatch.
FTLX3912M331 vs FTLX3912M339: what is the difference?
Both are in Finisar's FTLX3912 family. They differ in wavelength (1552.52nm (ITU C31) vs 1546.12nm (ITU C39)). Pick the variant that matches your temperature, latch and wavelength needs.
What does the FTLX3912M331 part number mean?
The FTLX prefix marks Finisar's 10G family (SFP+, XFP, X2, XENPAK). The remaining characters identify the optical design and build variant.
Is the FTLX3912M331 still available?
The FTLX3912M331 is a legacy Finisar part, so new production is limited or ended. Next Gen Networks helps source remaining genuine stock and can suggest a current Coherent alternative with the same reach and wavelength.
What is the FTLX3912M331 price in India and how do I order?
The Finisar FTLX3912M331 price in India depends on quantity, delivery city and current stock. Next Gen Networks supplies it with a GST invoice (input tax credit ready) and pan-India dispatch from New Delhi. Send the part number, quantity and delivery city on WhatsApp +91-7827955775 or email Sales@nextgennetworks.in for a GST quote.
What power does the FTLX3912M331 need?
It runs from Vcc5 4.75–5.25 V.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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