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Finisar FWLF1625P2Lxx CWDM 4.25G FC, APD rx SFP 80km
up to 4.25 Gb/s CWDM 4.25G FC, APD rx SFP transceiver, Channel-specific (see variants), up to 80km, commercial (−5 to 75 °c) temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FWLF1625P2Lxx
- Family
- FWLF1625P2L
- Category
- Fiber optic transceiver modules
- Datasheet
- FWLF1625P2Lxx datasheet (PDF)
FWLF1625P2Lxx specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FWLF1625P2Lxx |
| Product family | FWLF1625P2L |
| Form factor | SFP |
| Standards / application | Gigabit Ethernet and 1x/2x/4x Fibre Channel |
| Data rate | 1.0625–4.25 Gb/s |
| Wavelength | 1471/1491/1511/1531/1551/1571/1591/1611 nm (8 CWDM channels) |
| Laser | CWDM DFB |
| Reach | Up to 80 km on SMF @4.25 Gb/s, BER 10⁻¹² |
| Connector | Duplex LC |
| Tx output power | +1 to +5 dBm |
| Rx sensitivity | 5.6 µW (OMA) @4.25 Gb/s |
| Rx overload / max input | −8 dBm |
| Extinction ratio | 4.5 dB |
| Supply voltage | 3.3 V (3.135–3.465 V) |
| Power dissipation | Supply current 350 mA max |
| Operating temperature | Commercial (−5 to 75 °C) |
| Diagnostics | Built-in digital diagnostics, I²C at A0h/A2h |
| Compliance | RoHS; Class 1 laser product (FDA/CDRH, EN/IEC 60825) |
| Lifecycle | Current production |
Optical and electrical values are from the Finisar / Coherent family datasheet; temperature grade is per part number. Confirm critical values with us before ordering.
FWLF1625P2Lxx: orderable variants (8)
| Part number | Details |
|---|---|
| FWLF1625P2L47 | L = Non rate selectable, 1x/2x/4x FC; Wavelength 1471 nm (clasp color: gray) |
| FWLF1625P2L49 | L = Non rate selectable, 1x/2x/4x FC; Wavelength 1491 nm (clasp color: violet) |
| FWLF1625P2L51 | L = Non rate selectable, 1x/2x/4x FC; Wavelength 1511 nm (clasp color: blue) |
| FWLF1625P2L53 | L = Non rate selectable, 1x/2x/4x FC; Wavelength 1531 nm (clasp color: green) |
| FWLF1625P2L55 | L = Non rate selectable, 1x/2x/4x FC; Wavelength 1551 nm (clasp color: yellow) |
| FWLF1625P2L57 | L = Non rate selectable, 1x/2x/4x FC; Wavelength 1571 nm (clasp color: orange) |
| FWLF1625P2L59 | L = Non rate selectable, 1x/2x/4x FC; Wavelength 1591 nm (clasp color: red) |
| FWLF1625P2L61 | L = Non rate selectable, 1x/2x/4x FC; Wavelength 1611 nm (clasp color: brown) |
Ask for any variant on WhatsApp +91-7827955775 or Sales@nextgennetworks.in – bulk pricing by quantity.
About the Finisar FWLF1625P2Lxx
The Finisar FWLF1625P2Lxx (now a Coherent Corp. product, formerly II-VI) is a SFP CWDM 4.25G FC, APD rx optical transceiver for up to 4.25 Gb/s links at Channel-specific (see variants) over SMF, with reach up to 80km. It is a commercial-temperature part rated −5 to 75 °C. The FWLF1625P2Lxx family name covers 8 orderable variants listed below. Typical uses: Gigabit Ethernet, 1/2/4G Fibre Channel SAN, SONET OC-48 / STM-16 and CWDM/DWDM metro links.
- Up to 4.25 Gb/s bi-directional data links
- Up to 80 km on SMF at 4.25 Gb/s
- Hot-pluggable SFP footprint
- Built-in digital diagnostic functions
- RoHS compliant
- Single 3.3V power supply
FWLF1625P2Lxx: frequently asked questions
What is the Finisar FWLF1625P2Lxx?
The FWLF1625P2Lxx is a Finisar SFP transceiver for CWDM 4.25G FC, APD rx at up to 4.25 Gb/s. Finisar is now part of Coherent Corp. (formerly II-VI), and the part number is unchanged. It is used for Gigabit Ethernet, 1/2/4G Fibre Channel SAN, SONET OC-48 / STM-16 and CWDM/DWDM metro links.
What does the 'x' in FWLF1625P2Lxx mean?
FWLF1625P2Lxx is Finisar's family / ordering name. The 'x' is replaced by a code to make the exact orderable part number. For this family the codes are: 47, 49, 51, 53, 55, 57, 59, 61. Two-digit numbers are ITU / CWDM wavelength channel codes. See the variants table and tell us which one you need, or share your switch and link details and we will pick the right one.
What is the optical power budget of the FWLF1625P2Lxx?
Per the Finisar family datasheet, the FWLF1625P2Lxx transmits +1 to +5 dBm and has a receiver sensitivity of 5.6 µW (OMA) @4.25 Gb/s. Maximum receiver input is −8 dBm.
Does the FWLF1625P2Lxx support DDM / digital diagnostics?
Yes. Built-in digital diagnostics, I²C at A0h/A2h. Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which part numbers are in the FWLF1625P2Lxx family?
Orderable variants include: FWLF1625P2L47, FWLF1625P2L49, FWLF1625P2L51, FWLF1625P2L53, FWLF1625P2L55, FWLF1625P2L57, FWLF1625P2L59, FWLF1625P2L61. Next Gen Networks supplies the exact variant you need in bulk with a GST invoice.
What is the maximum distance of the FWLF1625P2Lxx?
The FWLF1625P2Lxx is specified for up to 80km over SMF. Long-reach optics may need an attenuator on short links; we can advise based on your link loss.
Which fiber and connector does the FWLF1625P2Lxx use?
The FWLF1625P2Lxx works at Channel-specific (see variants) over SMF. Both ends of a link must use the same optical standard.
Will the FWLF1625P2Lxx work in my Cisco, Juniper, Arista or HPE switch?
The FWLF1625P2Lxx follows the SFP 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.
What temperature range is the FWLF1625P2Lxx rated for?
The FWLF1625P2Lxx is a commercial-temperature part rated −5 to 75 °C. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FWLF1625P2Lxx part number mean?
The FWLF prefix marks Finisar's CWDM / DWDM wavelength-specific SFP family. The C letter in the suffix usually marks the commercial temperature grade. The remaining characters identify the optical design and build variant.
Is your FWLF1625P2Lxx genuine Finisar?
Yes. Next Gen Networks supplies original Finisar / Coherent modules, not third-party lookalikes or grey-market stock, and shares serial numbers on request.
What is the FWLF1625P2Lxx price in India and how do I order?
The Finisar FWLF1625P2Lxx 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 FWLF1625P2Lxx need?
It runs from 3.3 V (3.135–3.465 V) with power dissipation of Supply current 350 mA max.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideDownload datasheet
Finisar_FWLF1625P2Lxx_Datasheet_NextGenNetworks.pdfManufacturer datasheet
Finisar / Coherent family datasheet
Related Finisar parts
FWLF1625P2L47CWDM 4.25G FC, APD rx, 80kmFWLF1625P2L49CWDM 4.25G FC, APD rx, 80kmFWLF1625P2L51CWDM 4.25G FC, APD rx, 80kmFWLF1625P2L53CWDM 4.25G FC, APD rx, 80kmFWLF1625P2L55CWDM 4.25G FC, APD rx, 80kmFWLF1625P2L57CWDM 4.25G FC, APD rx, 80kmGovernment, PSU and enterprise orders welcome. GST invoice and pan-India delivery.
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