SFP-25G-ER-I – 25GBASE-ER SFP28 – 40km SMF – Industrial Temp
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SFP-25G-ER-I Description
SFP-25G-ER-I is a Cisco 25GBASE-ER SFP28 industrial-temperature optical transceiver for 25 Gigabit Ethernet links that need long-reach single-mode fiber connectivity. It supports 40 km operation over standard ITU-T G.652 single-mode fiber, uses a dual LC/PC connector with 1310 nm optics, requires RS-FEC on host ports for full 25G reach, and is specified for -40 to 85 degrees C industrial environments with 1.5W maximum power consumption.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
SFP-25G-ER-I |
|
Product type |
Industrial-temperature 25GBASE-ER SFP28 transceiver |
|
Ethernet rate |
25 Gigabit Ethernet |
|
Fiber type |
Standard single-mode fiber |
|
SMF reference |
ITU-T G.652 |
|
Nominal wavelength |
1310 nm |
|
Operating distance |
40 km |
|
Connector |
Dual LC/PC |
|
Host FEC requirement |
RS-FEC on host ports for full reach at 25G |
|
Maximum power consumption |
1.5W |
|
Operating temperature class |
Industrial -40 to 85 degrees C |
Application Scenarios
SFP-25G-ER-I fits supported Cisco SFP28 ports where the fiber plan needs a 25G ER transceiver and the site temperature range rules out commercial-temperature optics.
For campus, aggregation, or service-edge paths that approach the 40 km class, this SKU keeps the BOM tied to duplex G.652 SMF, RS-FEC, and Cisco’s engineered-link note for distances greater than 30 km.
Use a separate order line for SFP-25G-ER-I when the design is duplex ER. The bidirectional SFP-25G-BX40D-I and SFP-25G-BX40U-I parts are matched single-fiber variants, and SFP-10/25G-LR-I stays in the shorter LR family.
Product Comparison
|
Parameter |
SFP-25G-ER-I |
SFP-25G-BX40D-I |
SFP-25G-BX40U-I | |
|---|---|---|---|---|
|
Product type |
25GBASE-ER SFP28 industrial transceiver |
10/25GBASE-LR SFP28 industrial transceiver |
25GBASE-BR40 SFP28 BiDi industrial transceiver |
25GBASE-BR40 SFP28 BiDi industrial transceiver |
|
Supported Ethernet rate |
25 Gigabit Ethernet |
10 and 25 Gigabit Ethernet |
25 Gigabit Ethernet |
25 Gigabit Ethernet |
|
Fiber type |
Standard SMF |
Standard SMF |
Standard SMF |
Standard SMF |
|
Fiber reference |
G.652 |
G.652 |
G.652 |
G.652 |
|
Fiber topology |
Duplex SMF |
Duplex SMF |
Single-fiber bidirectional downstream |
Single-fiber bidirectional upstream |
|
Nominal wavelength |
1310 nm |
1310 nm |
1314 nm transmit and 1289 nm receive |
1289 nm transmit and 1314 nm receive |
|
Documented reach |
40 km |
10 km |
40 km |
40 km |
|
Host FEC requirement |
RS-FEC for full reach at 25G |
RS-FEC for full reach at 25G |
RS-FEC for full reach at 25G |
RS-FEC for full reach at 25G |
|
Maximum power consumption |
1.5W |
1.3W |
1.9W |
1.9W |
|
Pull tab or bail latch color |
Red |
Blue |
Red |
Red |
|
Ordering description |
25GBASE-ER SFP28 Module for SMF Industrial Temp |
10/25GBASE-LR SFP28 Module for SMF Industrial Temp |
25GBASE-BR40 SFP28 BiDi module for SMF Industrial Temp Downstream |
25GBASE-BR40 SFP28 BiDi module for SMF Industrial Temp Upstream |
- In a SFP-25G-ER-I vs SFP-10/25G-LR-I comparison, the table changes from a 40 km 25G ER order line to a 10 km 10/25G LR order line, while both remain industrial-temperature SMF modules.
- The SFP-25G-ER-I difference from SFP-25G-BX40D-I is fiber topology and wavelength pairing: SFP-25G-ER-I is a duplex ER optic, while SFP-25G-BX40D-I is the downstream member of a single-fiber bidirectional pair.
- SFP-25G-ER-I vs SFP-25G-BX40U-I is the matching upstream-side comparison for the same BiDi family; the table keeps reach aligned but changes the transmit and receive wavelengths.
- For which model to choose, match the duplex or single-fiber design, reach class, temperature class, RS-FEC support, and Cisco host-support entry before replacing one industrial 25G SFP28 SKU with another.
Selection Guide
1. Select it for duplex 40 km ER
Choose SFP-25G-ER-I when the bill of materials calls for Cisco 25GBASE-ER over two-strand G.652 single-mode fiber and the intended host has official Cisco support.
2. Keep LR-I for shorter dual-rate needs
Use SFP-10/25G-LR-I where the deployment needs the Cisco industrial LR family, 10 km reach, or the documented 10G and 25G dual-rate scope rather than a single-rate 25G ER optic.
3. Use the BX40 pair only for single-fiber links
Order SFP-25G-BX40D-I with SFP-25G-BX40U-I when the design uses Cisco’s single-fiber bidirectional 40 km path, not when the fiber plant is a duplex ER pair.
4. Check engineered-link conditions early
For SFP-25G-ER-I spans beyond 30 km, keep the fiber-loss record and RS-FEC setting with the quote package so the deployment is reviewed as an engineered link.
Ordering Checklist
|
Check Item |
What to Confirm |
Procurement Risk Controlled |
|---|---|---|
|
Cisco host support |
Target switch, port, and software release are checked in Cisco compatibility documentation |
Avoids approving the optic from SFP28 form factor and 25G speed alone |
|
Fiber topology |
Cabling plan uses duplex G.652 single-mode fiber for the ER link |
Prevents substituting single-fiber BiDi optics into a two-strand design or the reverse |
|
RS-FEC readiness |
Host ports can use RS-FEC for full-reach 25G operation |
Reduces turn-up risk on long 25G ER paths |
|
Industrial temperature need |
Site conditions require Cisco’s -40 to 85 degrees C industrial range |
Keeps the industrial SKU tied to a real environmental requirement |
|
Connector plan |
Patch cords use LC/PC or LC/UPC ends and avoid APC connectors |
Matches Cisco’s connector rule for the SFP28 optical link |
|
Link engineering record |
Fiber loss and path details are reviewed when the span is greater than 30 km |
Keeps the 40 km order tied to Cisco’s engineered-link note |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | SFP-25G-ER-I | Product type | Industrial-temperature 25GBASE-ER SFP28 transceiver |
| Ordering description | 25GBASE-ER SFP28 Module for SMF Industrial Temp | Ethernet rate | 25 Gigabit Ethernet |
| Receiver electrical interface | Limiting | Form factor | SFP28 |
| Fiber type | Standard single-mode fiber | SMF reference | ITU-T G.652 |
| Nominal wavelength | 1310 nm | Transmit and receive wavelength range | 1295 to 1310 nm |
| Operating distance | 40 km | Engineered-link note | Links greater than 30 km are engineered links |
| Transmit power range | +6.0 to -3.0 dBm | Receive power range | -4.0 to -21.0 dBm |
| Connector | Dual LC/PC | Patch-cord rule | PC or UPC connectors supported |
| Pull tab color | Red | Maximum power consumption | 1.5W |
| Host FEC requirement | RS-FEC on host ports for full reach at 25G | Operating temperature class | Industrial |
| Industrial operating temperature | -40 to 85 degrees C | Storage temperature range | -40 to 85 degrees C |
| Standards references | SFF-8402, SFF-8472, IEEE 802.3, IEEE P802.3by, IEEE P802.3cc | Standard warranty | 5 years |
| Platform support boundary | Cisco host platform and software support must be verified in the Transceiver Module Group Compatibility Matrix |
Get More Information
Need pricing, stock, or shipping details for the SFP-25G-ER-I ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email sales@layer23-switch.com for a fast quotation.
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Questions & Answers
-
What distance does SFP-25G-ER-I target?
-
Why does SFP-25G-ER-I require tighter link budgeting?
-
Is SFP-25G-ER-I a dual-rate 10G optic?
-
What temperature profile does SFP-25G-ER-I provide?
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Which fiber type belongs with SFP-25G-ER-I?
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Why is RS-FEC important for SFP-25G-ER-I?
-
When does SFP-25G-ER-I replace SFP-10/25G-LR-I?
-
Which ordering mistake affects SFP-25G-ER-I?
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