High-speed 25G modules tend to get very hot. What is the power consumption on this SFP28 module?

Power consumption is kept low (typically under1.5W per module) running on a standard +3.3V supply. This low thermal footprint prevents switch backplanes from overheating when populating high-density 48-port top-of-rack switches.

What type of fiber connector patch cord do I need to buy to connect to this module?

You will need a simplex LC single-mode (9/125µm) patch cable. Make sure to use a simplex LC connector rather than a duplex LC cable.

Our cabinet in Arizona easily hits 50°C in summer. Can this module handle extreme thermal conditions?

Yes, this module is built with an extended operating temperature range of -20°C to +85°C. It handles heat buildup inside sealed outdoor cabinets far better than standard commercial-grade modules (0°C to 70°C).

This module uses 1330nm-TX and 1270nm-RX. Does that mean I can't connect two identical modules to each other?

Correct! BiDi optics work in complementary pairs. To establish a link, End A must use this module (1330nm TX / 1270nm RX), and End B must use its matching pair (1270nm TX / 1330nm RX). If you use 1330nm on both ends, they won't hear each other.

If our field technician hot-plugs this module into an active outdoor switch, will it damage the unit or drop adjacent ports?

Not at all. It is fully hot-pluggable. You can insert or remove the module without powering down the host switch or disturbing neighboring active optical links.

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LINK-PP LS-BL332725-20E 25G SFP28 BiDi 1330nm-TX/1270nm-RX 20km Simplex LC/UPC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-BL332725-20E 25G SFP28 BiDi 1330nm-TX/1270nm-RX 20km Simplex LC/UPC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 183656
Price: 39.99 USD
Availability: InStock
Rating: 4.9 (18 reviews)

# 183656

Product: LINK-PP LS-BL332725-20E 25G SFP28 BiDi 1330nm-TX/1270nm-RX 20km Simplex LC/UPC DOM SMF Optical Transceiver Module
SKU: 183656
P/N: LS-BL332725-20E
Price: $ 46.5
Stock: 880 in Stock
Sold: 220
Product URL: https://www.l-p.com/products/478626.htm

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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-BL332725-20E 25G SFP28 Specifications

LS-BL332725-20E is a single-mode SFP28 BiDi optical transceiver module that delivers 25G data rates up to a 20km range via a simplex LC/UPC connector, utilizing 1330nm-TX/1270nm-RX wavelengths and integrated DOM diagnostics to ensure stable operation from -20°C to 85°C.

LINK-PP Part Number	LS-BL332725-20E	Vendor Name	LINK-PP
Form Factor	SFP28	Max Data Rate	25.78Gbps
Wavelength	1330nm-TX/1270nm-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
Operating Temperature Range	-20 to 85°C	Protocols	eCPRI, SFF-8472, SFF-8432, SFF-8431

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Q: High-speed 25G modules tend to get very hot. What is the power consumption on this SFP28 module? By A***e on 2026-04-18

A: Power consumption is kept low (typically under1.5W per module) running on a standard +3.3V supply. This low thermal footprint prevents switch backplanes from overheating when populating high-density 48-port top-of-rack switches. By admin on 2026-04-19
Q: What type of fiber connector patch cord do I need to buy to connect to this module? By Z***s on 2025-10-02

A: You will need a simplex LC single-mode (9/125µm) patch cable. Make sure to use a simplex LC connector rather than a duplex LC cable. By admin on 2025-10-03
Q: Our cabinet in Arizona easily hits 50°C in summer. Can this module handle extreme thermal conditions? By H***l on 2025-07-07

A: Yes, this module is built with an extended operating temperature range of -20°C to +85°C. It handles heat buildup inside sealed outdoor cabinets far better than standard commercial-grade modules (0°C to 70°C). By admin on 2025-07-08
Q: This module uses 1330nm-TX and 1270nm-RX. Does that mean I can't connect two identical modules to each other? By C***t on 2025-06-04

A: Correct! BiDi optics work in complementary pairs. To establish a link, End A must use this module (1330nm TX / 1270nm RX), and End B must use its matching pair (1270nm TX / 1330nm RX). If you use 1330nm on both ends, they won't hear each other. By admin on 2025-06-05
Q: If our field technician hot-plugs this module into an active outdoor switch, will it damage the unit or drop adjacent ports? By B***e on 2025-05-29

A: Not at all. It is fully hot-pluggable. You can insert or remove the module without powering down the host switch or disturbing neighboring active optical links. By admin on 2025-05-30

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S***s

France

Verified Purchase

5 .0

2026-05-07

Upgraded our inter-facility link using these SFP28 25G BiDi modules across an 11-mile single-strand fiber connection. SFF-8472 digital diagnostic monitoring integrated seamlessly into our CLI, giving us accurate live metrics for laser bias, operating temperature, and optical power. The low thermal output (~1.3W) keeps our dense switch chassis cool under continuous high-throughput traffic. It is rare to find such reliable optical performance at this price point.

126 Helpful vote Comments

D***r

Ireland

Verified Purchase

5 .0

2026-04-01

Tested these BiDi SFP28 modules on our core enterprise aggregation switches. Link synced at 25 Gbps immediately. Temperature sits at a cool ~38°C in a climate-controlled room. Make sure you remember that this 1330nm-TX / 1270nm-RX unit requires the complementary 1270nm-TX / 1330nm-RX optic on the far end!

64 Helpful vote Comments

M***l

Australia

Verified Purchase

5 .0

2026-03-15

Packaging was simple but secure. Modules arrived in anti-static protection.

49 Helpful vote Comments

B***l

Bulgaria

Verified Purchase

5 .0

2026-02-09

Good balance between price and performance for bulk deployment.

32 Helpful vote Comments

R***s

United States

Verified Purchase

5 .0

2026-01-28

We used these 25G SFP28 transceivers for a metro fiber deployment spanning approximately 16–18km. Even at near maximum distance, the link margin remained stable with no packet drops. The simplex LC/UPC interface is extremely helpful in fiber-constrained scenarios.

105 Helpful vote Comments

J***y

United Kingdom

Verified Purchase

5 .0

2025-12-19

What impressed our NOC team most is the accurate factory calibration of the Digital Diagnostics Monitoring (DDM). During optical attenuation testing, high and low power warning traps triggered precisely at expected dBm thresholds via SNMP. Having precise live Rx/Tx readings allows us to catch fiber bending or splice degradation long before an actual link outage occurs. It is a well-engineered 25G BiDi optic that gives infrastructure teams complete visibility and peace of mind.

96 Helpful vote Comments

T***s

Morocco

Verified Purchase

5 .0

2025-11-08

Upgraded our metro ring links from 10G SFP+ BiDi to 25G SFP28 BiDi using the exact same fiber infrastructure. Didn't have to touch the fiber patch panels or splice closures. Instant 2.5x bandwidth boost without laying a single new foot of glass cable. Highly efficient upgrade!

118 Helpful vote Comments

K***a

Austria

Verified Purchase

5 .0

2025-10-12

Used in an 18km metro link, optical signal margin still looks healthy.

58 Helpful vote Comments

O***n

Canada

Verified Purchase

4 .0

2025-10-02

This 20km BiDi SFP28 module performs as expected with clean DDM stats over single-mode fiber. The courier delayed the final delivery by two days, but customer support was quick to send tracking updates.

36 Helpful vote Comments

E***t

Japan

Verified Purchase

5 .0

2025-09-22

We integrated these SFP28 BiDi modules into a 25G spine-leaf architecture. Latency remained minimal, and throughput tests confirmed full 25Gbps performance. No abnormal DOM alarms were detected during stress testing.

110 Helpful vote Comments

M***r

Hungary

Verified Purchase

5 .0

2025-08-21

We needed to upgrade our inter-building backbone to 25G, but leased fiber strand constraints meant dual-strand cabling wasn't an option. The LS-BL332725-20E (paired with the 1270nm-TX/1330nm-RX BiDi module) bridged our 14km link effortlessly over OS2 SMF. Tx power was well within specs, and Rx sensitivity showed plenty of optical budget headroom.

79 Helpful vote Comments

K***r

Canada

Verified Purchase

5 .0

2025-07-28

We use this BiDi SFP28 module for 25G aggregation links between racks. Stable throughput and no CRC errors.

60 Helpful vote Comments

E***h

Italy

Verified Purchase

5 .0

2025-07-09

Deployed these 25G BiDi optical transceivers in outdoor radio access sites to connect baseband units over single-mode fiber. The 1330nm DFB laser maintained exceptional wavelength stability even under ambient temperature shifts inside outdoor enclosures. The Simplex LC latch provided a tight, dust-resistant physical seal, and signal integrity remained pristine across our entire 17km span. For network engineers struggling with fiber exhaust at remote tower sites, these BiDi optics are an absolute game-changer.

121 Helpful vote Comments

S***s

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-06-27

We deployed the LINK-PP LS-BL332725-20E across a 25G aggregation layer connecting multiple buildings over single-mode fiber. The BiDi design (1330nm TX / 1270nm RX) allowed us to halve fiber usage, which significantly reduced infrastructure costs. DOM/DDM readings remained stable under continuous traffic loads, and all modules maintained consistent optical output within expected thresholds.

91 Helpful vote Comments

A***l

Belgium

Verified Purchase

5 .0

2025-05-16

DOM diagnostics are accurate compared with our external testing tools.

72 Helpful vote Comments

R***s

Germany

Verified Purchase

5 .0

2025-04-12

For a telecom backhaul project, these modules were installed in outdoor cabinets connected via single-mode fiber. While not industrial grade, they handled moderate environmental variations well. Performance remained consistent under fluctuating temperatures.

90 Helpful vote Comments

G***s

Lithuania

Verified Purchase

5 .0

2025-03-31

I was skeptical about third-party optics transceivers, but these modules flashed flawlessly. Plugged into our 25G core switches, the CLI reports full DDM details including laser bias current, operating temperature, and optical power levels. No log spam, no interface flaps. Will be ordering another batch of 200 units next quarter.

119 Helpful vote Comments

L***r

Spain

Verified Purchase

4 .0

2025-03-22

Product quality is excellent, and the link came up instantly. However, international delivery got delayed at customs for two days for tax verification. Order early if you have a tight deployment deadline!

28 Helpful vote Comments