Can I use this transceiver in a high-density 48-port distribution switch chassis?

Absolutely, its low power consumption design prevents heat buildup even when ports are fully populated.

If I have this 1270nm-TX/1330nm-RX module installed at Site A, can it establish a link with an identical 1270nm-TX/1330nm-RX unit at Site B?

No, a BiDi link requires a matching pair; you must connect this module to its complementary 1330nm-TX/1270nm-RX counterpart on the other side so their wavelengths align correctly.

Can I patch this transceiver directly into a legacy multi-mode fiber infrastructure if the distance is very short?

No, this module is specifically engineered for single-mode fiber to maintain proper optical laser alignment and structural link integrity.

What happens to the link stability if the ambient temperature drops below freezing down to -15°C?

The link will remain completely stable, as the module is engineered to operate seamlessly all the way down to -20°C.

Can my network management platform pull real-time optical diagnostics from this module natively?

Yes, it features full compliance with the SFF-8472 standard, allowing your system to read real-time DOM metrics like TX/RX power and temperature.

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

Name: LINK-PP LS-BL273325-10E 25G SFP28 BiDi 1270nm-TX/1330nm-RX 10km Simplex LC/UPC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 183474
Price: 33.54 USD
Availability: InStock
Rating: 4.9 (18 reviews)

# 183474

Product: LINK-PP LS-BL273325-10E 25G SFP28 BiDi 1270nm-TX/1330nm-RX 10km Simplex LC/UPC DOM SMF Optical Transceiver Module
SKU: 183474
P/N: LS-BL273325-10E
Price: $ 39
Stock: 1500 in Stock
Sold: 980
Product URL: https://www.l-p.com/products/478449.htm

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Manufacture: LINK-PP

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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-BL273325-10E 25G SFP28 Specifications

LS-BL273325-10E is a 25G BiDi single-mode optical transceiver module utilizing a 1270nm DFB laser paired with a high-sensitivity 1330nm PIN receiver to achieve a 10km link budget over a single strand of single-mode fiber, maintaining strict optical power budget integrity across a temperature envelope of -20°C to +85°C.

LINK-PP Part Number	LS-BL273325-10E	Vendor Name	LINK-PP
Form Factor	SFP28	Max Data Rate	25.78Gbps
Wavelength	1270nm-TX/1330nm-RX	Max Cable Distance	10km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-3 to +5dBm	RX Power	-14 to +3dBm
Receiver Sensitivity	<-13dBm	Receiver Overload	2dBm
FEC Function	Not Supported	Operating Temperature Range	-20°C to +85°C
Protocols	MSA Compliant, CPRI, eCPRI	Warranty	5 Years

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Q: Can I use this transceiver in a high-density 48-port distribution switch chassis? By P***l on 2026-04-04

A: Absolutely, its low power consumption design prevents heat buildup even when ports are fully populated. By admin on 2026-04-05
Q: If I have this 1270nm-TX/1330nm-RX module installed at Site A, can it establish a link with an identical 1270nm-TX/1330nm-RX unit at Site B? By S***e on 2026-01-30

A: No, a BiDi link requires a matching pair; you must connect this module to its complementary 1330nm-TX/1270nm-RX counterpart on the other side so their wavelengths align correctly. By admin on 2026-01-31
Q: Can I patch this transceiver directly into a legacy multi-mode fiber infrastructure if the distance is very short? By R***r on 2025-11-07

A: No, this module is specifically engineered for single-mode fiber to maintain proper optical laser alignment and structural link integrity. By admin on 2025-11-08
Q: What happens to the link stability if the ambient temperature drops below freezing down to -15°C? By Q***d on 2025-06-20

A: The link will remain completely stable, as the module is engineered to operate seamlessly all the way down to -20°C. By admin on 2025-06-21
Q: Can my network management platform pull real-time optical diagnostics from this module natively? By T***d on 2025-05-17

A: Yes, it features full compliance with the SFF-8472 standard, allowing your system to read real-time DOM metrics like TX/RX power and temperature. By admin on 2025-05-18

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N***k

United States

Verified Purchase

5 .0

2026-04-25

Our flash storage arrays were heavily throttled by legacy 10G backplanes, driving our migration to a 25G SFP28 infrastructure. Because our inter-rack conduits are completely maxed out, traditional duplex cables were out of the question. This Simplex LC/UPC module solved our structural bottleneck perfectly by doubling bandwidth over our existing single-mode fiber infrastructure. The receiver sensitivity is superb; despite multiple patch panels and high attenuation along the patch path, the optical power budget maintains a highly reliable margin. No frame drops or buffer credit exhaustion noted after weeks of heavy production workload.

102 Helpful vote Comments

Z***y

United States

Verified Purchase

5 .0

2026-04-09

Splitting our single-mode run with these BiDi units cut our fiber deployment costs in half!

56 Helpful vote Comments

G***n

United States

Verified Purchase

5 .0

2026-03-08

The -20°C to +85°C operating temperature range handles our high-density server racks with ease. Monitoring telemetry shows them hovering around a stable 38°C under full 25G load. They slide perfectly into standard high-density SFP28 allocation blocks.

110 Helpful vote Comments

D***m

United States

Verified Purchase

5 .0

2026-02-25

Ordered a dozen of these LS-BL273325-10E optics for a high-speed storage replication link between our primary server room and a secondary backup facility. DDM readings are fully accessible via our switch CLI, showing incredibly stable laser bias and TX power levels.

81 Helpful vote Comments

J***n

United States

Verified Purchase

5 .0

2026-01-08

We recently moved our SaaS hosting infrastructure into a new colocation facility and needed high-speed 25G uplinks to the provider's demarcation patch panel. These SFP28 BiDi transceivers performed flawlessly when connected to our core switches. The DOM feature gave us complete peace of mind during provisioning, confirming that the colocation provider's fiber cross-connect met our attenuation expectations. The physical latching mechanism is smooth yet tight, ensuring no accidental disconnects. A very dependable piece of hardware for mission-critical cloud operations.

89 Helpful vote Comments

L***n

United States

Verified Purchase

5 .0

2025-12-22

For enterprise-level network monitoring, accurate Digital Optical Monitoring (DOM) is absolutely non-negotiable. I hooked this transceiver up to our monitoring stack via automated telemetry scripts. The data matches our standalone hardware testers exactly: TX power is dead-on, and RX power updates in real-time. Thermal dissipation is highly efficient; even when packed tightly into a dense 48-port leaf switch, the operating temperature stays well within the 70°C limit. The build quality of the LC/UPC receptacle is robust, handling multiple insert/extract cycles during our rack reorganization without scratch issues.

124 Helpful vote Comments

C***m

United States

Verified Purchase

5 .0

2025-11-11

We needed to scale our campus edge network from 10G to 25G, but we were out of dark fiber strands. These SFP28 BiDi modules saved the day by letting us multiplex Tx and Rx onto our existing Simplex LC infrastructure. Absolute lifesaver for tight budgets.

105 Helpful vote Comments

I***h

United States

Verified Purchase

5 .0

2025-10-09

This was the quickest deployment we've had all quarter for our corporate core expansion. The digital optical monitoring (DOM) feed updates in real-time, displaying highly precise voltage and thermal stats. High-grade hardware all around.

55 Helpful vote Comments

B***h

United States

Verified Purchase

5 .0

2025-09-24

TX1270/RX1330 laser filtering is incredibly sharp over our 8km campus link.

42 Helpful vote Comments

P***l

United States

Verified Purchase

4 .0

2025-09-18

Excellent DOM readings and robust build quality. A minor logistics issue occurred when the courier swapped our delivery route, pushing our guaranteed morning delivery to late in the afternoon and throwing off our technician's scheduling.

28 Helpful vote Comments

F***h

United States

Verified Purchase

5 .0

2025-08-02

Swapped out some absurdly overpriced OEM 25G single-mode optics with these LINK-PP alternatives. Honestly, there is zero noticeable difference in latency, jitter, or frame loss, but our accounting department is absolutely thrilled about the cost savings.

77 Helpful vote Comments

O***m

Canada

Verified Purchase

4 .0

2025-07-15

Outstanding price-to-performance ratio for 25G optical transceivers. However, the international express shipping took an extra three days because local customs held up the paperwork for a random inspection. Once in hand, it plugged right in and worked perfectly.

35 Helpful vote Comments

A***k

Germany

Verified Purchase

5 .0

2025-07-08

Fast shipping to Germany, well-packaged, and standard MSA hot-swapping works perfectly.

69 Helpful vote Comments

K***g

United States

Verified Purchase

5 .0

2025-06-26

As a regional ISP network engineer, I'm always looking for ways to optimize our metro Ethernet rings. This 25G 10km SFP28 transceiver allows us to double our capacity on existing single-strand fiber feeds to enterprise customers. The optical budget easily overcomes multiple splice points and patch panels along the path. We highly appreciate the clear labeling on the pull-tab, making it incredibly easy for field technicians to identify the 1270nm TX wavelength during hot-swaps in dark server aisles. Will definitely maintain a rolling inventory of these.

91 Helpful vote Comments

E***h

United States

Verified Purchase

5 .0

2025-05-05

Perfect upgrade path for building a high-speed NAS link or connecting top-of-rack enterprise switches without overspending. The 1270nm-TX and 1330nm-RX matching works exactly as spec'd over our single-mode fiber patch panels.

44 Helpful vote Comments

H***n

United States

Verified Purchase

5 .0

2025-04-30

Whenever you find yourself facing an infrastructure bottleneck with limited fiber, single-strand BiDi is the way to go. This 1270/1330nm module cleared up our bandwidth congestion instantly, giving us clean 25Gbps throughput right out of the gate.

143 Helpful vote Comments

M***d

United States

Verified Purchase

5 .0

2025-03-26

We integrated these 25G BiDi optical transceivers into our standardized hardware verification pipeline before staging a massive metro backbone expansion. Running over a 9km single-strand fiber spool, the optical eyes remained wide open during continuous bit-error-rate testing (BERT). Jitter metrics and latency variations were virtually non-existent, aligning perfectly with standard telecom backhaul criteria. Despite the fact that these are rated from -20°C to +85°C, our thermal telemetry shows they run exceptionally cool under maximum power load inside highly stacked open-networking distribution chassis.

157 Helpful vote Comments

W***e

United States

Verified Purchase

5 .0

2025-03-02

Unbeatable value for upgrading server-to-switch uplinks on a tight budget.

33 Helpful vote Comments