Finisar
Finisar RoHS 6 Compliant 1000BASE-T RoHS 0 to 85C Copper SFP Transceiver (fclf-8521-3)
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- SKU:
- 21193703
- MPN:
- fclf-8521-3
- Availability:
- Usually ships the same or next business day. In stock at our IL warehouse.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 02/20/2026 09:29:32 AM PST
Bulk discount rates
Below are the available bulk discount rates for each individual item when you purchase a certain amount
| Buy 2 | and pay only $111.39 each 111.39 |
| Buy 3 - 4 | and pay only $108.99 each 108.99 |
| Buy 5 | and pay only $107.07 each 107.07 |
| Buy 6 or above | and pay only $104.19 each 104.19 |
- Stock Update:
- 02/20/2026 09:29:32 AM PST
Description
This item is brand-new, factory sealed.
Finisar's FCLF-8520-3/FCLF-8521-3 1000BASE-T Copper Small Form Pluggable (SFP) transceivers are based on the SFP Multi Source Agreement (MSA). They are compatible with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE Std 802.3. The 1000BASE-T physical layer IC (PHY) can be accessed via I2C, allowing access to all PHY settings and features.
Features
Environmentally Friendly:
Yes
MSA Compliant
Yes
Compatibility:
MSA Compliant
Specs
| Physical Characteristics | |
| Form Factor | Hot-pluggable |
| Interfaces/Ports | |
| Total Number of Ports | 1 |
| Connector Type | RJ-45 |
| Interfaces/Ports Details | 1 x RJ-45 10/100/1000Base-T LAN |
| General Information | |
| Brand Name | Finisar |
| Manufacturer Website Address | http://www.finisar.com |
| Marketing Information | Finisar's FCLF-8520-3/FCLF-8521-3 1000BASE-T Copper Small Form Pluggable (SFP) transceivers are based on the SFP Multi Source Agreement (MSA). They are compatible with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE Std 802.3. The 1000BASE-T physical layer IC (PHY) can be accessed via I2C, allowing access to all PHY settings and features. |
| Product Type | SFP (mini-GBIC) |
| Product Name | RoHS 6 Compliant 1000BASE-T RoHS 0 to 85C Copper SFP Transceiver |
| Manufacturer | Finisar Corporation |
| Manufacturer Part Number | FCLF-8521-3 |
| Product Model | FCLF-8521-3 |
| Packaged Quantity | 1 |
| Media & Performance | |
| Ethernet Technology | Gigabit Ethernet |
| Twisted Pair Cable Standard | Category 5 |
| Media Type Supported | Twisted Pair |
| Network Technology | 10/100/1000Base-T |
| Technical Information | |
| Application/Usage | Data Networking |
Warranty Information
All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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Finisar RoHS 6 Compliant 1000BASE-T RoHS 0 to 85C Copper SFP Transceiver (fclf-8521-3)
$118.48