What kind of fiber patch cable do I need to connect this module? Does it take a standard duplex LC cable?

This is a BiDi (Bidirectional) transceiver which transmits and receives over a single strand of fiber. It features a Simplex LC/UPC optical connector interface. You will need a Simplex Single-Mode Fiber (SMF) patch cord with an LC/UPC connector.

Can this transceiver be deployed in uncooled outdoor junction boxes? Summer temperatures here can reach up to 45°C ambient, making rack interiors much hotter.

Yes, this is the Industrial version, which supports a wide operating temperature range from -40°C up to +85°C. It is specifically built with ruggedized internal components to handle extreme heat in enclosed outdoor cabinets.

Does this transceiver support standard telecom transmission protocols like eCPRI for 5G wireless fronthaul networks?

Yes, it is fully compliant with 25G Ethernet standards, IEEE 802.3cc, SFF-8402, and matches all timing and jitter specifications required for eCPRI / CPRI wireless backhaul and fronthaul protocols.

We need to buy around 500pcs of these 25G BiDi 20km modules for a data center expansion. Is there any bulk discount or wholesale price available?

Yes, we offer tiered wholesale pricing for volume B2B purchases. For quantities over 100pcs, the price drops significantly. Please contact our enterprise sales team directly for an official quote.

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HW SFP-25G-eLR-BXU1-I Compatible LINK-PP 25G SFP28 BiDi 1270nm-TX/1330nm-RX 20km Simplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)

Name: HW SFP-25G-eLR-BXU1-I Compatible LINK-PP 25G SFP28 BiDi 1270nm-TX/1330nm-RX 20km Simplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 212871
Price: 32.508 USD
Availability: InStock
Rating: 4.8 (24 reviews)

# 212871

Product: HW SFP-25G-eLR-BXU1-I Compatible LINK-PP 25G SFP28 BiDi 1270nm-TX/1330nm-RX 20km Simplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
SKU: 212871
P/N: LS-BL273325-20I
Price: $ 37.8
Stock: 1690 in Stock
Sold: 875
Product URL: https://www.l-p.com/products/491564.htm

For Order Over $1000 Get $15.00 Off , Code: Linkpp15

For Order Over $3000 Get $50.00 Off , Code: Linkpp50

For Order Over $5000 Get $100.00 Off , Code: Linkpp100

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Manufacture: LINK-PP

P/N: LS-BL273325-20I

Compatible:: Cisco; LINK-PP; Arista; Brocade; DELL; FS; HW; Intel; Juniper; Mellanox

Compatible P/N:: 25GBase-BX-D | 10km; 25GBase-BX-U | 10km; SFP-25G-BXD1-I | 10km; SFP-25G-LR-BXU1-I | 10km; 25GBase-BX-U | 20km; SFP-25G-eLR-BXU1-I | 20km; 25GBase-BX-D4 | 40km; 25GBase-BX-D4-I | 40km; 25GBase-BX-U4 | 40km; 25GBase-BX-U4-I | 40km

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HW SFP-25G-eLR-BXU1-I Compatible LINK-PP 25G SFP28 Specifications

SFP-25G-eLR-BXU1-I is an industrial-grade 25G SFP28 BiDi single-mode optical transceiver module engineered to deliver resilient 20km data links across extreme -40°C to +85°C environments, utilizing a 1270nm-TX/1330nm-RX wavelength pairing backed by a robust optical power profile (TX: -1 to +7dBm; RX: -15 to +3dBm) for pristine signal integrity.

HW Part Number	SFP-25G-eLR-BXU1-I	Vendor Name	LINK-PP
Form Factor	SFP28	Max Data Rate	25.78Gbps
Wavelength	1270nm-TX/1330nm-RX	Max Cable Distance	20km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-1 to +7dBm	RX Power	-15 to +3dBm
Receiver Sensitivity	<-14dBm	Receiver Overload	2dBm
DDM/DOM	Supported	Operating Temperature Range	-40°C to +85°C
Protocols	eCPRI, SFF-8472, SFF-8432, SFF-8431	Warranty	5 Years

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Q: What kind of fiber patch cable do I need to connect this module? Does it take a standard duplex LC cable? By C***s on 2026-01-18

A: This is a BiDi (Bidirectional) transceiver which transmits and receives over a single strand of fiber. It features a Simplex LC/UPC optical connector interface. You will need a Simplex Single-Mode Fiber (SMF) patch cord with an LC/UPC connector. By admin on 2026-01-19
Q: Can this transceiver be deployed in uncooled outdoor junction boxes? Summer temperatures here can reach up to 45°C ambient, making rack interiors much hotter. By B***s on 2025-11-03

A: Yes, this is the Industrial version, which supports a wide operating temperature range from -40°C up to +85°C. It is specifically built with ruggedized internal components to handle extreme heat in enclosed outdoor cabinets. By admin on 2025-11-04
Q: Does this transceiver support standard telecom transmission protocols like eCPRI for 5G wireless fronthaul networks? By D***s on 2025-07-22

A: Yes, it is fully compliant with 25G Ethernet standards, IEEE 802.3cc, SFF-8402, and matches all timing and jitter specifications required for eCPRI / CPRI wireless backhaul and fronthaul protocols. By admin on 2025-07-23
Q: We need to buy around 500pcs of these 25G BiDi 20km modules for a data center expansion. Is there any bulk discount or wholesale price available? By A***s on 2025-05-12

A: Yes, we offer tiered wholesale pricing for volume B2B purchases. For quantities over 100pcs, the price drops significantly. Please contact our enterprise sales team directly for an official quote. By admin on 2025-05-13

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A***a

Verified Purchase

5 .0

2026-01-20

We use these inside wayside rolling stock housings. Internal rack temps hit 65°C easily during mid-day but these industrial-grade 25G BiDi modules haven't dropped a single packet. 1270nm-TX/1330nm-RX wavelength isolation is exceptionally clean.

34 Helpful vote Comments

C***n

Australia

Verified Purchase

5 .0

2026-01-18

Our fiber run has quite a few patch panels and splices, but the TX power of this 1270nm transmitter punches right through with plenty of receiver overload margin (+2dBm) left over.

96 Helpful vote Comments

I***z

Japan

Verified Purchase

5 .0

2026-01-02

Tested across Arista and Cisco switches in our test lab. Multi-vendor interoperability is excellent. Our purchasing department is moving all future orders here.

62 Helpful vote Comments

M***z

Germany

Verified Purchase

5 .0

2025-12-29

Asked the vendor to code these for our mixed Mellanox and Dell server environments. Received them well-labeled and ready to go. Saved our field engineers a ton of time during the datacenter deployment phase.

33 Helpful vote Comments

W***s

Italy

Verified Purchase

4 .0

2025-12-12

Ordered 100pcs for a massive top-of-rack layout upgrade. The pricing is super competitive compared to OEM optics. Packing box was a little bit bent on arrival but modules were undamaged. Will order the 1330nm-TX matching pair next week.

56 Helpful vote Comments

A***n

United Arab Emirates

Verified Purchase

5 .0

2025-08-11

Using these for suburban FTTH aggregation points. Winters here drop below freezing but the LS-BL273325-20I 25G BiDi module handles it easily. Excellent hardware choice.

61 Helpful vote Comments

A***r

United States

Verified Purchase

5 .0

2025-08-02

Monitored the transceiver via SNMP for a week. Voltage, temperature, and bias current metrics are highly accurate and stable. No erratic reporting like cheaper generic brands.

22 Helpful vote Comments

M***z

Poland

Verified Purchase

5 .0

2025-07-22

BiDi single fiber technology is a game changer for our metropolitan network. Cut our fiber leasing costs in half by utilizing just one strand of single-mode fiber for bidirectional 25G data rate transport.

78 Helpful vote Comments

D***z

Czech Republic

Verified Purchase

4 .0

2025-07-14

Deployed a batch of these industrial 25G SFP28 transceivers across our outdoor wayside smart city cabinets. Unlike climate-controlled enterprise datacenters, our enclosure internal temperatures fluctuate violently—dropping to -25°C during Nordic winter nights and soaring past 60°C in mid-summer due to direct solar loading on the uncooled metal housing. We have been running these for a complete seasonal cycle now. Looking at our Grafana dashboards, the laser bias current adjusted dynamically with the temperature swings exactly as specified by SFF-8472 guidelines. Port uptime is 100% with absolutely no link flaps, framing errors, or CRC faults on our ruggedized industrial switches. The only slight drawback is that the pull-tab latch mechanism feels a bit rigid when you are wearing heavy-duty thermal work gloves in the field, but the physical casting shell is incredibly durable. Rock solid industrial gear. d(_)b

56 Helpful vote Comments

S***s

Hungary

Verified Purchase

5 .0

2025-07-05

Plugged into our campus fiber networking core switch and recognized instantly. No log errors or port flapping. Dom monitoring works like a charm.

15 Helpful vote Comments

C***r

Portugal

Verified Purchase

5 .0

2025-06-28

Our regional ISP was facing a massive capacity crunch on a suburban base station backhaul route. Renting additional dark fiber strands was cost-prohibitive, so we decided to migrate our legacy 10G links to 25G BiDi technology. This simplex LC/UPC single-mode fiber setup completely saved our budget by squeezing bidirectional 25.78Gbps traffic onto just one single fiber strand. We paired this 1270nm-TX/1330nm-RX module with its matching 1330nm-TX counterpart on the remote cell tower site. The CPRI/eCPRI protocol mapping was seamless—zero timing sync issues or clock degradation detected by our synchronization test sets. Power consumption is incredibly well-managed; even under full traffic loads, it stays well below 1.5W per port, keeping our switch thermal dissipation within nominal parameters. If you are trying to maximize existing fiber plant capacity while upgrading to 25G Ethernet, this is the exact hardware you need.

123 Helpful vote Comments

O***n

Greece

Verified Purchase

5 .0

2025-06-15

Needed to link two data centers across town. This simplex LC/UPC single-mode fiber module worked perfectly over a 16km dirty fiber lease path. Real-time DDM metrics show excellent TX power margin (-1 to +7dBm). Highly recommend!

29 Helpful vote Comments

M***s

Ireland

Verified Purchase

5 .0

2025-06-03

Tested with RFC2544 traffic generator, zero frame loss over 18.5km SMF fiber. Pure quality.

13 Helpful vote Comments

H***n

Verified Purchase

4 .0

2025-05-05

We recently overhauled our corporate campus networking framework, upgrading 48 hypervisor nodes from 10G to 25G infrastructure. With 48 ports packed tightly into a 1U Top-of-Rack (ToR) switch, internal thermal management was our number one concern. Some cheap generic transceivers run hot, pushing past 3.5W and causing localized port shutdown loops. The LS-BL273325-20I surprised us pleasantly. Thermal imaging shows a highly uniform heat dissipation pattern, with power draw strictly capped under 1.2W. Our core switch exhaust temperatures have remained completely stable. We did experience a minor logistics hiccup—the DHL delivery package arrived with a slightly crushed outer corner box due to a customs inspection delay at the airport. However, the internal transceiver module were completely intact, and every single optic passed its visual inspection and built-in loopback test. Excellent value for high-density enterprise deployments. (^_^)

25 Helpful vote Comments

C***e

Verified Purchase

4 .0

2025-04-25

The outer carton box took a hit during transit to the UK, but luckily the individual anti-static packaging kept the simplex LC optical transceiver perfectly safe. DDM values align precisely with specifications.

12 Helpful vote Comments

W***O

Turkey

Verified Purchase

5 .0

2024-06-04

Worked perfectly.

70 Helpful vote Comments

T***i

Ukraine

Verified Purchase

5 .0