Can the DDM telemetry alert our team if the laser diode begins to degrade due to long-term harsh industrial deployment?

Yes, a DDM compliant with the SFF-8472 standard will continuously monitor the laser bias current, enabling your SNMP software to proactively issue maintenance alerts.

Our factory assembly line cannot afford a full network shutdown. Can we hot-swap this module while the switch is running?

Yes, the module is fully hot-pluggable. It can be safely inserted or extracted from an active switch port cage without interrupting surrounding operations.

Is the optical performance affected if this transceiver is mounted near heavy industrial motors causing high electrical noise?

No. Since optical fibers utilize light pulses instead of copper currents, this transceiver provides absolute immunity to EMI and RF noise.

Does this 1550nm-TX/1310nm-RX SFP require a specific mating partner on the other side of the 20km single-mode link?

Yes, it must be paired with a matching 1310nm-TX/1550nm-RX SFP (such as our LS-BL315501-20I module) at the opposite end.

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LINK-PP LS-BL553101-20I 155M SFP BiDi 1550nm-TX/1310nm-RX 20km Simplex LC DDM SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-BL553101-20I 155M SFP BiDi 1550nm-TX/1310nm-RX 20km Simplex LC DDM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 205656
Price: 6.45 USD
Availability: InStock
Rating: 4.9 (19 reviews)

# 205656

Product: LINK-PP LS-BL553101-20I 155M SFP BiDi 1550nm-TX/1310nm-RX 20km Simplex LC DDM SMF Optical Transceiver Module (Industrial)
SKU: 205656
P/N: LS-BL553101-20I
Price: $ 7.5
Stock: 850 in Stock
Sold: 1.2K
Product URL: https://www.l-p.com/products/494039.htm

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Manufacture: LINK-PP

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Compatible:: LINK-PP

Compatible P/N:: LS-BL315501-10C | 10km; LS-BL315501-10I | 10km; LS-BL553101-10C | 10km; LS-BL553101-10I | 10km; LS-BL315501-15C | 15km; LS-BL553101-15C | 15km; LS-BL315501-20C | 20km; LS-BL315501-20I | 20km; LS-BL553101-20C | 20km; LS-BL553101-20I | 20km; LS-BL315501-40C | 40km; LS-BL315501-40I | 40km; LS-BL553101-40C | 40km; LS-BL553101-40I | 40km; LS-BL315501-80C | 80km; LS-BL315501-80I | 80km; LS-BL495501-80C | 80km; LS-BL495501-80I | 80km; LS-BL553101-80C | 80km; LS-BL553101-80I | 80km; LS-BL554901-80C | 80km; LS-BL554901-80I | 80km

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LINK-PP LS-BL553101-20I 155M SFP Specifications

LS-BL553101-20I functions as an industrial-grade 155M BiDi SFP optical transceiver module featuring built-in real-time digital diagnostic monitoring, engineered to sustain a 20km reach through 1550nm-TX/1310nm-RX wavelengths over a simplex LC interface across a wide -40 to +85°C operational spectrum.

LINK-PP Part Number	LS-BL553101-20I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	1550nm-TX/1310nm-RX	Max Cable Distance	20km
Connector	Simplex LC	Media	SMF
Transmitter Type	FP	Receiver Type	PIN
TX Power	-14 to -8dBm	Receiver Sensitivity	-32dBm
RX Power	-32 to -6dBm	DOM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Can the DDM telemetry alert our team if the laser diode begins to degrade due to long-term harsh industrial deployment? By O***m on 2026-02-22

A: Yes, a DDM compliant with the SFF-8472 standard will continuously monitor the laser bias current, enabling your SNMP software to proactively issue maintenance alerts. By admin on 2026-02-23
Q: Our factory assembly line cannot afford a full network shutdown. Can we hot-swap this module while the switch is running? By N***y on 2025-07-30

A: Yes, the module is fully hot-pluggable. It can be safely inserted or extracted from an active switch port cage without interrupting surrounding operations. By admin on 2025-07-31
Q: Is the optical performance affected if this transceiver is mounted near heavy industrial motors causing high electrical noise? By P***e on 2025-04-07

A: No. Since optical fibers utilize light pulses instead of copper currents, this transceiver provides absolute immunity to EMI and RF noise. By admin on 2025-04-08
Q: Does this 1550nm-TX/1310nm-RX SFP require a specific mating partner on the other side of the 20km single-mode link? By M***m on 2025-02-03

A: Yes, it must be paired with a matching 1310nm-TX/1550nm-RX SFP (such as our LS-BL315501-20I module) at the opposite end. By admin on 2025-02-04

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T***r

Iran, Islamic Republic of

Verified Purchase

5 .0

2026-05-02

Perfect simplex LC solution to save fiber cores in our municipal camera networks!

66 Helpful vote Comments

E***y

Indonesia

Verified Purchase

5 .0

2026-04-27

Perfect compatibility with our legacy SONET gear. We needed optical transceivers that could withstand high operating temperatures in our top-of-rack passive cabinets. The 1550nm-TX/1310nm-RX wavelength pairing matches perfectly. Not a single CRC error in 2 months of runtime!

104 Helpful vote Comments

S***r

Mexico

Verified Purchase

5 .0

2026-03-26

Great industrial-grade BiDi SFP. We deployed these simplex LC modules across our water treatment plant's ring network. Running perfectly at 155Mbps on single-mode fiber. The DDM/DOM feature is super handy for monitoring signal levels over the 15km span. Perfect for harsh environment setups!

85 Helpful vote Comments

I***p

United States

Verified Purchase

5 .0

2026-03-18

We executed a field upgrade across 35 wayside control points using these 155M single-mode modules for automated track signaling networks. Because these unconditioned roadside cabinets endure intense heavy-machinery vibration and temperature swings, commercial optics always fail. These ruggedized wide-temperature modules proved exceptionally resilient, establishing immediate links upon installation into our switches. Clean optical loss budget and accurate DOM telemetry make this an outstanding choice for critical industrial deployments.

128 Helpful vote Comments

G***z

Hungary

Verified Purchase

5 .0

2026-02-06

Upgraded our legacy 155M links in our hydro-electric plant. These BiDi modules are fully compatible with our older industrial switches. Optical Tx/Rx power levels are perfect through the 20km single-mode fiber span. Perfect manufacturing quality!

119 Helpful vote Comments

J***t

India

Verified Purchase

5 .0

2026-01-18

Standard Fast Ethernet specs matched perfectly, plug-and-play for our legacy optical loops!

55 Helpful vote Comments

K***e

Nepal

Verified Purchase

4 .0

2026-01-04

We deploy these in harsh coastal surveillance camera networks. High humidity and temperature fluctuations don't affect these transceivers at all. The 20km range allows us to backhaul video feeds directly to the main terminal over single-strand fiber. Delivery took two days longer than expected, but the product is great!

17 Helpful vote Comments

A***n

Finland

Verified Purchase

5 .0

2025-12-31

Physical-layer optical reliability is non-negotiable for our remote substation SCADA rings. We deployed these industrial SFP BiDi modules across an 18km single-mode span, and they handle the extreme cabinet heat flawlessly. The simplex LC design successfully doubled our fiber capacity without the massive capital expenditure of laying new single-strand cables. Accurate DDM data integrates perfectly via SNMP, showing rock-solid Tx/Rx power levels with zero packet drop. Highly recommended!

152 Helpful vote Comments

T***t

Canada

Verified Purchase

5 .0

2025-11-22

Building dependable network infrastructure in northern climates means preparing for deep sub-zero winters that destroy standard commercial optics. We utilize these industrial-rated SFPs in our rural broadband-over-fiber project to connect wireless backhaul nodes across long 20km single-mode spans. Outdoor enclosures routinely drop below -25°C, yet these modules maintain constant, stable Tx power levels and fantastic receiver sensitivity. The simplex LC single-fiber design completely cut our routing and cable installation costs in half. A true lifesaver!

83 Helpful vote Comments

G***s

Malaysia

Verified Purchase

5 .0

2025-11-09

Fantastic cost saver for our rural broadband telemetry project! Using simplex LC fiber allowed us to double our fiber capacity without laying new cables. Spec sheet says 20km range, and we are getting solid, error-free transmission at 18.4km. Outstanding build quality.

85 Helpful vote Comments

K***e

Macao

Verified Purchase

5 .0

2025-10-12

The real-time DDM diagnostics are highly accurate, showing perfect optical Rx power levels.

39 Helpful vote Comments

O***n

France

Verified Purchase

5 .0

2025-09-22

Excellent 155M BiDi optical transceivers for smart grid communication nodes. Standard simplex LC connectors make deployment quick, and the -40 to +85°C rating is a hard requirement for our outdoor poles.

61 Helpful vote Comments

N***r

Israel

Verified Purchase

5 .0

2025-08-04

Swapping to these simplex LC BiDi optical modules cut our fiber deployment budget in half!

67 Helpful vote Comments

H***s

Netherlands

Verified Purchase

5 .0

2025-06-29

These BiDi SFP modules are incredibly resilient. Placed them in remote outback telemetry boxes where ambient temperatures exceed 45°C inside uncooled enclosures. DDM telemetry reports steady TX power and RX sensitivity even during peak heat. Will source all our industrial-grade optical transceivers from LINK-PP.

94 Helpful vote Comments

L***s

Belgium

Verified Purchase

4 .0

2025-05-21

Excellent compatibility with our legacy Alcatel STM-1 network equipment. Wavelengths (1550nm-TX/1310nm-RX) align perfectly and link established immediately over simplex LC fiber. However, the shipment took three days longer than expected to arrive at our Brussels warehouse. Highly recommend the product, but advise planning ahead for shipping lead times!

33 Helpful vote Comments

R***y

Maldives

Verified Purchase

5 .0

2025-04-12

Zero frame loss over 18km of single-mode fiber, outstanding transceiver build quality!

90 Helpful vote Comments

C***n

Ireland

Verified Purchase

5 .0

2025-03-22

We ordered a batch of 50 for a legacy utility substation upgrade. These 155M BiDi modules synced immediately with our switches. Optical diagnostics (DDM) integrated seamlessly into our SNMP platform. Definitely an industrial-grade workhorse for substation automation!

122 Helpful vote Comments

M***b

Morocco

Verified Purchase

5 .0

2025-02-28

Super reliable 155M BiDi SFP optical modules, instantly brought up our 15km remote sensor links!

58 Helpful vote Comments

J***d

Norway

Verified Purchase

5 .0

2025-01-22

Perfect replacement transceivers for old SONET equipment. We were worried about finding high-quality industrial simplex LC optics at 1550nm-TX/1310nm-RX, but these fit the bill perfectly. DDM function matches original specifications beautifully. The ordering process was super smooth!

106 Helpful vote Comments