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Finisar FWLF1634RLxx DWDM 4.25G FC SFP 80km
up to 4.25 Gb/s DWDM 4.25G FC / 2.5G, APD rx (non-rate-select) SFP transceiver, Channel-specific (see variants), up to 80km, commercial (−5 to 70 °c) temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FWLF1634RLxx
- Family
- FWLF1634RL
- Category
- Fiber optic transceiver modules
- Datasheet
- FWLF1634RLxx datasheet (PDF)
FWLF1634RLxx specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FWLF1634RLxx |
| Product family | FWLF1634RL |
| Form factor | SFP |
| Standards / application | 4x FC; 1x/2x FC, GbE and OC-48 LR-2 (rate-select option) |
| Data rate | 0.155–4.25 Gb/s |
| Wavelength | 100 GHz ITU grid C-band, 45 channels: ch17 191.7 THz/1563.86 nm to ch61 196.1 THz/1528.77 nm |
| Laser | Temperature-stabilized DWDM-rated low-dispersion DFB |
| Receiver | APD |
| Reach | Total link budget 26–30 dB @4.25 Gb/s; 31–34 dB @2.5 Gb/s (BER<10⁻¹²) |
| Tx output power | +2 to +5 dBm |
| Rx sensitivity | −28 dBm @2.5 Gb/s; −23 dBm @4.25 Gb/s (BER<10⁻¹²) |
| Rx overload / max input | −9 dBm; damage threshold +6 dBm |
| Extinction ratio | 6.0 dB (≤4.25G); 8.2 dB SONET (rate-select option) |
| Supply voltage | 3.3 V (3.13–3.50 V) |
| Power dissipation | 1.25 W max (Icc 325 mA typ) |
| Operating temperature | Commercial (−5 to 70 °C) |
| Diagnostics | Digital diagnostics per Finisar AN-2030; enhanced features per DWDM SFP MSA (A2h: laser current, temperature, Tx/Rx power) |
| Compliance | Class 1 laser product |
| 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.
FWLF1634RLxx: orderable variants (45)
| Part number | Details |
|---|---|
| FWLF1634RL17 | y = L: non rate select; ITU 100 GHz channel 17 (ordering table: 17 = 191.7 THz) |
| FWLF1634RL18 | y = L: non rate select; ITU 100 GHz channel 18 (ordering table: 18 = 191.8 THz) |
| FWLF1634RL19 | y = L: non rate select; ITU 100 GHz channel 19 (ordering table: 19 = 191.9 THz) |
| FWLF1634RL20 | y = L: non rate select; ITU 100 GHz channel 20 (ordering table: 20 = 192.0 THz) |
| FWLF1634RL21 | y = L: non rate select; ITU 100 GHz channel 21 (ordering table: 21 = 192.1 THz) |
| FWLF1634RL22 | y = L: non rate select; ITU 100 GHz channel 22 (ordering table: 22 = 192.2 THz) |
| FWLF1634RL23 | y = L: non rate select; ITU 100 GHz channel 23 (ordering table: 23 = 192.3 THz) |
| FWLF1634RL24 | y = L: non rate select; ITU 100 GHz channel 24 (ordering table: 24 = 192.4 THz) |
| FWLF1634RL25 | y = L: non rate select; ITU 100 GHz channel 25 (ordering table: 25 = 192.5 THz) |
| FWLF1634RL26 | y = L: non rate select; ITU 100 GHz channel 26 (ordering table: 26 = 192.6 THz) |
| FWLF1634RL27 | y = L: non rate select; ITU 100 GHz channel 27 (ordering table: 27 = 192.7 THz) |
| FWLF1634RL28 | y = L: non rate select; ITU 100 GHz channel 28 (ordering table: 28 = 192.8 THz) |
| FWLF1634RL29 | y = L: non rate select; ITU 100 GHz channel 29 (ordering table: 29 = 192.9 THz) |
| FWLF1634RL30 | y = L: non rate select; ITU 100 GHz channel 30 (ordering table: 30 = 193.0 THz) |
| FWLF1634RL31 | y = L: non rate select; ITU 100 GHz channel 31 (ordering table: 31 = 193.1 THz) |
| FWLF1634RL32 | y = L: non rate select; ITU 100 GHz channel 32 (ordering table: 32 = 193.2 THz) |
| FWLF1634RL33 | y = L: non rate select; ITU 100 GHz channel 33 (ordering table: 33 = 193.3 THz) |
| FWLF1634RL34 | y = L: non rate select; ITU 100 GHz channel 34 (ordering table: 34 = 193.4 THz) |
| FWLF1634RL35 | y = L: non rate select; ITU 100 GHz channel 35 (ordering table: 35 = 193.5 THz) |
| FWLF1634RL36 | y = L: non rate select; ITU 100 GHz channel 36 (ordering table: 36 = 193.6 THz) |
| FWLF1634RL37 | y = L: non rate select; ITU 100 GHz channel 37 (ordering table: 37 = 193.7 THz) |
| FWLF1634RL38 | y = L: non rate select; ITU 100 GHz channel 38 (ordering table: 38 = 193.8 THz) |
| FWLF1634RL39 | y = L: non rate select; ITU 100 GHz channel 39 (ordering table: 39 = 193.9 THz) |
| FWLF1634RL40 | y = L: non rate select; ITU 100 GHz channel 40 (ordering table: 40 = 194.0 THz) |
| FWLF1634RL41 | y = L: non rate select; ITU 100 GHz channel 41 (ordering table: 41 = 194.1 THz) |
| FWLF1634RL42 | y = L: non rate select; ITU 100 GHz channel 42 (ordering table: 42 = 194.2 THz) |
| FWLF1634RL43 | y = L: non rate select; ITU 100 GHz channel 43 (ordering table: 43 = 194.3 THz) |
| FWLF1634RL44 | y = L: non rate select; ITU 100 GHz channel 44 (ordering table: 44 = 194.4 THz) |
| FWLF1634RL45 | y = L: non rate select; ITU 100 GHz channel 45 (ordering table: 45 = 194.5 THz) |
| FWLF1634RL46 | y = L: non rate select; ITU 100 GHz channel 46 (ordering table: 46 = 194.6 THz) |
| FWLF1634RL47 | y = L: non rate select; ITU 100 GHz channel 47 (ordering table: 47 = 194.7 THz) |
| FWLF1634RL48 | y = L: non rate select; ITU 100 GHz channel 48 (ordering table: 48 = 194.8 THz) |
| FWLF1634RL49 | y = L: non rate select; ITU 100 GHz channel 49 (ordering table: 49 = 194.9 THz) |
| FWLF1634RL50 | y = L: non rate select; ITU 100 GHz channel 50 (ordering table: 50 = 195.0 THz) |
| FWLF1634RL51 | y = L: non rate select; ITU 100 GHz channel 51 (ordering table: 51 = 195.1 THz) |
| FWLF1634RL52 | y = L: non rate select; ITU 100 GHz channel 52 (ordering table: 52 = 195.2 THz) |
| FWLF1634RL53 | y = L: non rate select; ITU 100 GHz channel 53 (ordering table: 53 = 195.3 THz) |
| FWLF1634RL54 | y = L: non rate select; ITU 100 GHz channel 54 (ordering table: 54 = 195.4 THz) |
| FWLF1634RL55 | y = L: non rate select; ITU 100 GHz channel 55 (ordering table: 55 = 195.5 THz) |
| FWLF1634RL56 | y = L: non rate select; ITU 100 GHz channel 56 (ordering table: 56 = 195.6 THz) |
| FWLF1634RL57 | y = L: non rate select; ITU 100 GHz channel 57 (ordering table: 57 = 195.7 THz) |
| FWLF1634RL58 | y = L: non rate select; ITU 100 GHz channel 58 (ordering table: 58 = 195.8 THz) |
| FWLF1634RL59 | y = L: non rate select; ITU 100 GHz channel 59 (ordering table: 59 = 195.9 THz) |
| FWLF1634RL60 | y = L: non rate select; ITU 100 GHz channel 60 (ordering table: 60 = 196.0 THz) |
| FWLF1634RL61 | y = L: non rate select; ITU 100 GHz channel 61 (ordering table: 61 = 196.1 THz) |
Ask for any variant on WhatsApp +91-7827955775 or Sales@nextgennetworks.in – bulk pricing by quantity.
About the Finisar FWLF1634RLxx
The Finisar FWLF1634RLxx (now a Coherent Corp. product, formerly II-VI) is a SFP DWDM 4.25G FC / 2.5G, APD rx (non-rate-select) 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 70 °C. The FWLF1634RLxx family name covers 45 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 links
- Hot-pluggable SFP footprint
- Temperature-stabilized DWDM-rated DFB laser transmitter
- 100 GHz ITU Grid, C-Band
- Wavelength controlled within ±0.1 nm over life and temperature
- Extended link budget with APD receiver technology
FWLF1634RLxx: frequently asked questions
What is the Finisar FWLF1634RLxx?
The FWLF1634RLxx is a Finisar SFP transceiver for DWDM 4.25G FC / 2.5G, APD rx (non-rate-select) 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 FWLF1634RLxx mean?
FWLF1634RLxx 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: 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28 …. 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 FWLF1634RLxx?
Per the Finisar family datasheet, the FWLF1634RLxx transmits +2 to +5 dBm and has a receiver sensitivity of −28 dBm @2.5 Gb/s; −23 dBm @4.25 Gb/s (BER<10⁻¹²). Maximum receiver input is −9 dBm; damage threshold +6 dBm.
Does the FWLF1634RLxx support DDM / digital diagnostics?
Yes. Digital diagnostics per Finisar AN-2030; enhanced features per DWDM SFP MSA (A2h: laser current, temperature, Tx/Rx power). Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which part numbers are in the FWLF1634RLxx family?
Orderable variants include: FWLF1634RL17, FWLF1634RL18, FWLF1634RL19, FWLF1634RL20, FWLF1634RL21, FWLF1634RL22, FWLF1634RL23, FWLF1634RL24, FWLF1634RL25, FWLF1634RL26, FWLF1634RL27, FWLF1634RL28, FWLF1634RL29, FWLF1634RL30, FWLF1634RL31 and 30 more. Next Gen Networks supplies the exact variant you need in bulk with a GST invoice.
What is the maximum distance of the FWLF1634RLxx?
The FWLF1634RLxx 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 FWLF1634RLxx use?
The FWLF1634RLxx works at Channel-specific (see variants) over SMF. 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 FWLF1634RLxx work in my Cisco, Juniper, Arista or HPE switch?
The FWLF1634RLxx 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 FWLF1634RLxx rated for?
The FWLF1634RLxx is a commercial-temperature part rated −5 to 70 °C. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FWLF1634RLxx 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 FWLF1634RLxx 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 FWLF1634RLxx price in India and how do I order?
The Finisar FWLF1634RLxx 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 FWLF1634RLxx need?
It runs from 3.3 V (3.13–3.50 V) with power dissipation of 1.25 W max (Icc 325 mA typ).
Documents
NextGen datasheetPDF · specs, FAQ & buying guideDownload datasheet
Finisar_FWLF1634RLxx_Datasheet_NextGenNetworks.pdfManufacturer datasheet
Finisar / Coherent family datasheet
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