Do I need to buy this exact same 1270nm-TX model for both ends of the fiber link?

No, you must pair this 1270nm-TX/1330nm-RX module with its complementary matching module (1330nm-TX/1270nm-RX) on the opposite end for the link to work.

We need to order over 500 of these 25G SFP 28BiDi modules for a major project. Do you offer volume discounts?

Yes, we offer tiered wholesale pricing for large orders. Just reach out to our sales team with your quantities and we will send over a custom quote.

Can we track the actual internal temperature of the module remotely during summer spikes?

Yes, the built-in Digital Optical Monitoring (DOM) provides real-time internal temperature telemetry that can be queried anytime via your switch CLI or SNMP tools.

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LINK-PP LS-BL273325-20E 25G SFP28 BiDi 1270nm-TX/1330nm-RX 20km Simplex LC/UPC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-BL273325-20E 25G SFP28 BiDi 1270nm-TX/1330nm-RX 20km Simplex LC/UPC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 183477
Price: 30.96 USD
Availability: InStock
Rating: 4.9 (17 reviews)

Product: LINK-PP LS-BL273325-20E 25G SFP28 BiDi 1270nm-TX/1330nm-RX 20km Simplex LC/UPC DOM SMF Optical Transceiver Module
SKU: 183477
P/N: LS-BL273325-20E
Price: $ 36
Stock: 1150 in Stock
Sold: 850
Product URL: https://www.l-p.com/products/478452.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

New Users: $10 Coupon for Orders , Code: linkpp2610

17 Reviews

3 Questions

850 Sold

$ 36

Free shipping. For wholesale pricing, please contact us directly.

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$ 36

100

$ 34.2

1000

$ 33.12

3000

$ 32.04

6000

$ 30.96

Manufacture: LINK-PP P/N: LS-BL273325-20E SKU: 183477

Compatible:: LINK-PP

Compatible P/N:: LS-BL273325-10C | 10km; LS-BL273325-10E | 10km; LS-BL273325-10I | 10km; LS-BL332725-10C | 10km; LS-BL332725-10E | 10km; LS-BL332725-10I | 10km; LS-BL273325-20C | 20km; LS-BL273325-20E | 20km; LS-BL273325-20I | 20km; LS-BL332725-20C | 20km; LS-BL332725-20E | 20km; LS-BL332725-20I | 20km; LS-BL273125-40C | 40km; LS-BL273125-40I | 40km; LS-BL312725-40C | 40km; LS-BL312725-40I | 40km; LS-BL293025-60C | 60km; LS-BL302925-60C | 60km

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to United States via FedEx

Estimated delivery time : 3 - 10 days.

5-Year Warranty 30-Day Returns 30-Day Exchange

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LINK-PP LS-BL273325-20E 25G SFP28 Specifications

LS-BL273325-20E is an advanced 25G SFP28 BiDi SMF optical transceiver module engineered to deliver robust 20km data transmission across a wide temperature spectrum of -20°C to +85°C by leveraging a bidirectional 1270nm-TX/1330nm-RX single-fiber wavelength configuration.

LINK-PP Part Number	LS-BL273325-20E	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	-20°C to +85°C
Protocols	eCPRI, SFF-8472, SFF-8432, SFF-8431	Warranty	5 Years

Key Features of LINK-PP LS-BL273325-20E 25G SFP28

LINK-PP LS-BL273325-20E is a highly efficient 25G SFP28 BiDi optical transceiver engineered for modern single-fiber architectures. It integrates advanced laser technology and digital monitoring to deliver reliable data transmission over extended distances. This module optimizes network layout by cutting fiber cabling needs in half without sacrificing speed or stability.

LINK-PP LS-BL273325-20E 25G SFP28 Optical Module

This module features a precise 1270nm DFB laser transmitter paired with a highly sensitive 1330nm PIN receiver. This powerful optical combination ensures stable signal generation and clear data reception over single-mode fiber. It provides excellent link budget and reliable data paths for demanding networking environments.

LS-BL273325-20E: 25 Gbps Connectivity for Single-Fiber Architecture

This transceiver delivers a fast 25Gbps data rate, meeting the bandwidth needs of enterprise networks and 5G fronthaul deployments. By utilizing BiDi technology, it achieves this high throughput over a single fiber strand instead of a traditional dual-fiber pair. It is an ideal solution for maximizing bandwidth while saving valuable fiber infrastructure.

LS-BL273325-20E Module with 1270nm-TX/1330nm-RX Wavelength

The transceiver utilizes a 1270nm wavelength to transmit data and a 1330nm wavelength to receive data simultaneously on the same fiber. This exact BiDi wavelength separation prevents signal interference and ensures clean, bidirectional communication. It allows network operators to double their capacity using existing single-mode fiber routes.

LS-BL273325-20E Module Supporting 20km Transmission

Designed for medium-haul network spans, this optical module easily covers link distances up to 20km. It maintains strong signal integrity and low latency over this entire range, making it perfect for connecting regional data hubs. This long-reach capability ensures steady connectivity for metro networks and scattered campus sites.

LS-BL273325-20E Module with Simplex LC/UPC Interface

Equipped with a standard simplex LC/UPC connector, this module ensures secure and quick fiber patching with minimal insertion loss. The compact single-port interface simplifies cable management in high-density patch panels and switches. It reduces physical clutter and makes hardware installation much cleaner.

LS-BL273325-20E Module with DOM for Real-Time Monitoring

Featuring built-in Digital Optical Monitoring (DOM), this module provides real-time access to critical operating parameters. Network administrators can easily track metrics like optical output power, receiver sensitivity, and temperature. This proactive monitoring helps detect potential link issues before they cause network downtime.

LINK-PP LS-BL273325-20E 25G SFP28 Certification

LINK-PP LS-BL273325-20E SFP28 module is manufactured under strict global standards, fully holding ISO 9001, CE, RoHS, and FCC certifications to guarantee international safety and quality compliance.

LS-BL273325-20E Quality Testing Program

Every transceiver undergoes rigorous signal integrity, thermal stress, and optical compliance testing to ensure zero-defect performance before shipping.

LS-BL273325-20E Quality Certifications

These industry credentials verify that the transceiver meets stringent safety, environmental protection, and electromagnetic interference regulations.

LS-BL273325-20E Certified for Reliable Host-Device Compatibility

The module is compliant with MSA standards to ensure seamless plug-and-play interoperability with switches and routers from mainstream brands.

Rigorous Testing Ensures Reliable SFP28 Performance

To guarantee total network dependability, each module undergoes extensive signal validation, which you can explore further at the LINK-PP Test Support Center.

Rigorous Testing Ensures Reliable Transceiver Performance

Optical Spectrum Test

Measure transmitter wavelength precision and side-mode suppression.

Eye Pattern Test

Evaluate optical signal shapes and clock jitter margins.

Bit Error Rate Test

Confirm flawless packet delivery under full traffic loads.

Temperature Test

Validate hardware stability across diverse environmental conditions.

Product Shipping for LINK-PP LS-BL273325-20E 25G SFP28

Our logistics framework guarantees secure safeguarding and rapid fulfillment. We ensure your critical hardware arrives safely and exactly on schedule.

Anti-Static Protective Packaging

Defend sensitive internal circuitry against harmful electrostatic discharge.

Shock-Resistant Transport Protection

Absorb road vibrations and rough handling during transit.

Fast Order Processing and Dispatch

Minimize warehouse turnaround times to expedite customer deployment.

Global Logistics and International Delivery

Navigate complex cross-border shipping lanes for seamless worldwide arrival.

LINK-PP LS-BL273325-20E 25G SFP28 Usage Demonstration

Designed for rapid deployment, the LS-BL273325-20E 25G SFP28 BiDi optical transceiver connects seamlessly via its simplex LC interface to streamline single-fiber physical layouts. It provides an efficient connectivity solution tailored specifically for bandwidth-intensive optical platforms, distributed campus networks, and long-range telecommunications infrastructure requiring precise real-time monitoring.

LS-BL273325-20E Technical Support

LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.

Pre-Sales Technical Consultation

Professional guidance to help you select the optimal LS-BL273325-20E module for your network design and application needs.

Compatibility Verification Support

Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.

Deployment & Installation Assistance

Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.

LINK-PP LS-BL273325-20E 25G SFP28 After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15-day no-reason return and refund

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free repair services for manufacturing defects throughout the warranty period

Warranty exclusions and conditions apply

Model Comparison Table

	Current Model LS-BL273325-20E	LS-BL273325-10E	LS-BL312725-40I	LS-BL302925-60C	LS-BL273325-20I	LS-BL273325-20C

Compatible	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP
Data Rate (Max)	25.78Gbps	25.78Gbps	25.78Gbps	25.78Gbps	25.78Gbps	25.78Gbps
Wavelength	1270nm-TX/1330nm-RX	1270nm-TX/1330nm-RX	1310nm-TX/1270nm-RX	1309nm-TX/1295nm-RX	1270nm-TX/1330nm-RX	1270nm-TX/1330nm-RX
Connector	Simplex LC	Simplex LC	Simplex LC	Simplex LC	Simplex LC	Simplex LC
Cable Distance (Max)	20km	10km	40km	60km	20km	20km
Cable Type	SMF	SMF	SMF	SMF	SMF	SMF
TX Power	-1 to +7dBm	-3 to +5dBm	-1 to +7dBm	0 to +6dBm	-1 to +7dBm	-1 to +7dBm
Receiver Sensitivity	-15 to +3dBm	-14 to +3dBm	＜-19dBm	-21 to -4dBm	-15 to +3dBm	-15 to +3dBm
Operating Temperature	-20°C to +85°C	-20°C to +85°C	-40 to 85°C	0 to 70°C	-40°C to +85°C	0°C to +70°C
Form Factor	SFP28	SFP28	SFP28	SFP28	SFP28	SFP28
Transmitter Type	DFB	DFB	DFB	EML	DFB	DFB
Receiver Type	PIN	PIN	APD	APD	PIN	PIN
Receiver Overload	2dBm	2dBm	-7dBm		2dBm	2dBm
DDM/DOM	Supported				Supported	Supported
Protocols	eCPRI, SFF-8472, SFF-8432, SFF-8431	MSA Compliant, CPRI, eCPRI	MSA Compliant, CPRI, eCPRI	MSA Compliant, CPRI, eCPRI	eCPRI, SFF-8472, SFF-8432, SFF-8431	eCPRI, SFF-8472, SFF-8432, SFF-8431
Warranty	5 Years	5 Years			5 Years	5 Years

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Q: Do I need to buy this exact same 1270nm-TX model for both ends of the fiber link? By M***n on 2026-02-24

A: No, you must pair this 1270nm-TX/1330nm-RX module with its complementary matching module (1330nm-TX/1270nm-RX) on the opposite end for the link to work. By admin on 2026-02-25
Q: We need to order over 500 of these 25G SFP 28BiDi modules for a major project. Do you offer volume discounts? By O***s on 2025-09-12

A: Yes, we offer tiered wholesale pricing for large orders. Just reach out to our sales team with your quantities and we will send over a custom quote. By admin on 2025-09-13
Q: Can we track the actual internal temperature of the module remotely during summer spikes? By N***l on 2025-03-29

A: Yes, the built-in Digital Optical Monitoring (DOM) provides real-time internal temperature telemetry that can be queried anytime via your switch CLI or SNMP tools. By admin on 2025-03-30

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I***w

United States

Verified Purchase

5 .0

2026-04-29

Bought 50 units of these 25G SFP28 1270nm-TX BiDi optical modules for an enterprise campus network aggregation project. The simplex LC interface saved us massive amounts of patching infrastructure. Real-time DOM telemetry is fully compatible with our routers. Outstanding ROI for high-speed metro networking!

63 Helpful vote Comments

P***n

United States

Verified Purchase

5 .0

2026-03-26

Procured a batch of 100 for a multi-floor high-speed network revamp. Every single optic passed our inbound QA inspection. The DOM monitoring tools helped us verify clean light levels across some older fiber patches easily. Will buy again.

151 Helpful vote Comments

M***n

United States

Verified Purchase

5 .0

2026-02-18

Solid packaging and fast international delivery. Each 25G SFP28 BiDi module arrived in an individual anti-static case with a clean dust cap. Tested insertion loss across our campus backbone link and the dBm metrics are well within the margin of error.

92 Helpful vote Comments

S***m

United States

Verified Purchase

5 .0

2026-01-25

We deployed these 25G SFP28 BiDi modules to aggregate a 16km metro ring linking our core data centers. Physical installation into our primary aggregation routers was smooth, and the simplex LC interface saved us massive amounts of fiber patching infrastructure. Digital Optical Monitoring parameters were monitored via SNMP over a 72-hour burn-in period, showing stable internal temperatures and excellent TX/RX optical power margins. We noticed zero packet loss or CRC anomalies under full line-rate traffic injection tests.

94 Helpful vote Comments

E***l

United States

Verified Purchase

5 .0

2026-01-12

The DDM telemetry reads flawlessly in EdgeOS — no blind troubleshooting here.

46 Helpful vote Comments

G***e

United States

Verified Purchase

5 .0

2025-12-30

The hot-swappable latch feels heavy-duty, clicks in tight, and runs surprisingly cool.

74 Helpful vote Comments

U***g

United States

Verified Purchase

5 .0

2025-12-08

We design and integrate dense top-of-rack switch configurations for enterprise clients where low power dissipation profiles are critical to prevent thermal hotspots. We fully populated a 48-port high-speed access switch with these simplex LC transceivers to run continuous storage traffic during our staging phase. Cumulative heat dissipation remained well within our datacenter cooling limits, and the responsive DOM metrics helped us spot a dirty patch cable immediately by flagging low RX power.

160 Helpful vote Comments

L***g

United States

Verified Purchase

5 .0

2025-11-24

For mid-mile point-to-point topologies, this 20km 25G BiDi optical module is the sweet spot. It runs cooler than expected for a high-density 25G module and easily hits full line rate over our 11-mile fiber run. Clean simplex LC connectors, tight fit, clicks in securely.

119 Helpful vote Comments

R***e

United States

Verified Purchase

4 .0

2025-10-27

These SFP28 BiDi transceivers solved our single-strand fiber networking limits between campus nodes. Excellent line-rate throughput. Deducted one star because the pull-tab mechanism felt a bit stiff during the very first insertion test, though it loosened up fine after a couple of swaps.

31 Helpful vote Comments

K***l

United States

Verified Purchase

5 .0

2025-09-09

We deploy these hot-swappable BiDi optical transceivers for fiber-to-the-building business clients. The Tx 1270nm and Rx 1330nm wavelength split works perfectly with our existing network infrastructure filters. They handle heavy 25G routing workloads without generating excess heat inside the rack.

139 Helpful vote Comments

O***h

United States

Verified Purchase

5 .0

2025-08-27

Excellent single-mode SFP28 optical module. Solved a bottleneck in our corporate storage area network (SAN) by bumping the trunk lines from 10G to 25G. The latency improvement across our backup arrays is highly noticeable.

118 Helpful vote Comments

J***g

United States

Verified Purchase

5 .0

2025-07-25

We migrated our core interconnects to 25G single-mode fiber to scale bandwidth. Paired these with the LS-BL332725-20E on the other side. Ran a 48-hour bit error rate test over 18km of dark fiber, and it showed zero packet loss. LINK-PP nailed it with this 20km SFP28 BiDi optical transceiver.

106 Helpful vote Comments

T***e

United States

Verified Purchase

5 .0

2025-06-19

Our engineering group used these single-mode fiber transceivers to upgrade our storage area network for a high-density virtualization cluster. The optics were installed directly into our enterprise leaf switches and server network interface cards, coming up instantly with zero vendor lock issues. The built-in DOM functionality exposes real-time diagnostics perfectly to our telemetry dashboard, allowing our team to track optical health remotely. Under peak replication workloads, these hot-swappable modules demonstrated rock-solid link stability and ultra-low latency.

127 Helpful vote Comments

F***m

United States

Verified Purchase

5 .0

2025-06-02

Zero CRC or framing errors on our spine switches after a full week of stress testing.

59 Helpful vote Comments

N***n

United States

Verified Purchase

5 .0

2025-05-18

We spec'd these 25G SFP28 optical transceivers for a regional hospital network linking a data center to an outpatient clinic 14km away. The specs perfectly matched the engineering requirements. These modules have been running continuously for 2 months now with zero link flaps.

85 Helpful vote Comments

Q***m

United States

Verified Purchase

4 .0

2025-04-14

The LS-BL273325-20E performs cleanly across our 15km single-mode fiber run. Zero framing errors on our routers. I just wish the rubber dust plugs for the simplex LC interface were a brighter color like neon blue or yellow. The black ones are too easy to drop and lose in a dark server room aisle.

28 Helpful vote Comments

H***n

United States

Verified Purchase

5 .0

2025-03-12

Solid optical budget, handled our 5G cell site backhaul rollout perfectly.

40 Helpful vote Comments

Verified Purchase

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|
1.1K Sold

$ 39.5 ~~$ 0.00~~

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LINK-PP

LS-BL332725-10C | 10km

LINK-PP LS-BL332725-10C 25G SFP28 BiDi 1330nm-TX/1270nm-RX 10km Simplex LC/UPC DOM SMF Optical Transceiver Module

28 Reviews
|
1.4K Sold

$ 39.5 ~~$ 0.00~~

{"pid":476627,"minimum_ordered_quantity":1,"skulist":[{"pskuid":181488,"cid":752,"pid":476627,"sku":"181488","psvid1":269168,"psvid2":269169,"psvid3":0,"psvid4":0,"left_num":810,"price":"39.500","strike_price":"0.000","innercode":"","addtime":"2024-06-24 13:41:35","uptime":"2025-04-10 19:50:42","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"39.5","subtotal":39.5}]}
LINK-PP

LS-BL273325-10I | 10km

LINK-PP LS-BL273325-10I 25G SFP28 BiDi 1270nm-TX/1330nm-RX 10km Simplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)

26 Reviews
|
870 Sold

$ 39 ~~$ 0.00~~

{"pid":476131,"minimum_ordered_quantity":1,"skulist":[{"pskuid":181157,"cid":752,"pid":476131,"sku":"181157","psvid1":268966,"psvid2":268967,"psvid3":0,"psvid4":0,"left_num":1130,"price":"39.000","strike_price":"0.000","innercode":"","addtime":"2024-06-13 11:15:30","uptime":"2026-06-25 18:27:13","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"39","subtotal":39}]}
LINK-PP

LS-MM8532E-S1C | 100m

LINK-PP LS-MM8532E-S1C 8G/16G/32G SFP28 850nm 100m Duplex LC DOM MMF Optical Transceiver Module

205 Sold

$ 138 ~~$ 0.00~~

{"pid":497276,"minimum_ordered_quantity":1,"skulist":[{"pskuid":223495,"cid":752,"pid":497276,"sku":"223495","psvid1":326606,"psvid2":326607,"psvid3":0,"psvid4":0,"left_num":95,"price":"138.000","strike_price":"0.000","innercode":"","addtime":"2026-08-16 23:40:30","uptime":"2026-08-16 23:40:30","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"138","subtotal":138}]}
Generic

SFP-25GMCSR-85 | 300m

Generic SFP-25GMCSR-85 Compatible LINK-PP 10G/25G SFP28 850nm 300m DDMI Duplex LC MMF Optical Transceiver Module

3.5K Sold

$ 32 ~~$ 0.00~~

{"pid":497140,"minimum_ordered_quantity":1,"skulist":[{"pskuid":222760,"cid":752,"pid":497140,"sku":"222760","psvid1":325136,"psvid2":325137,"psvid3":0,"psvid4":0,"left_num":301,"price":"32.000","strike_price":"0.000","innercode":"","addtime":"2026-08-13 19:41:22","uptime":"2026-08-13 19:41:22","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"32","subtotal":32}]}
NVIDIA/Mellanox

SFP-25GMCSR-85 | 300m

NVIDIA/Mellanox SFP-25GMCSR-85 Compatible LINK-PP 10G/25G SFP28 850nm 300m DDMI Duplex LC MMF Optical Transceiver Module

3.3K Sold

$ 32 ~~$ 0.00~~

{"pid":497139,"minimum_ordered_quantity":1,"skulist":[{"pskuid":222761,"cid":752,"pid":497139,"sku":"222761","psvid1":325138,"psvid2":325139,"psvid3":0,"psvid4":0,"left_num":245,"price":"32.000","strike_price":"0.000","innercode":"","addtime":"2026-08-13 19:41:24","uptime":"2026-08-13 19:41:24","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"32","subtotal":32}]}
FS

SFP-25GMCSR-85 | 300m

FS SFP-25GMCSR-85 Compatible LINK-PP 10G/25G SFP28 850nm 300m DDMI Duplex LC MMF Optical Transceiver Module

4.6K Sold

$ 32 ~~$ 0.00~~

{"pid":497138,"minimum_ordered_quantity":1,"skulist":[{"pskuid":222759,"cid":752,"pid":497138,"sku":"222759","psvid1":325134,"psvid2":325135,"psvid3":0,"psvid4":0,"left_num":253,"price":"32.000","strike_price":"0.000","innercode":"","addtime":"2026-08-13 19:41:20","uptime":"2026-08-13 19:41:20","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"32","subtotal":32}]}