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)

# 183477

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

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$ 33.12

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Manufacture: LINK-PP

P/N: LS-BL273325-20E

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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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

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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