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J9142B-C
1G SFP LC BX-D Transceiver HP X122 Compatible
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J9142B-C is a high-performance SFP+ optical transceiver designed for reliable 10G Ethernet connectivity across data centers, enterprise networks, and telecom infrastructures. It features a compact form factor with LC connector support, making it ideal for high-density applications requiring short-range optical transmission.
J9142B-C supports a data rate of 10G over single-mode fiber with a typical wavelength of 1310 nm and a maximum transmission distance of up to 10 km. With precise physical dimensions of 0.87 inches in height, 1.66 inches in width, and 0.30 inches in depth, this transceiver is engineered for optimal power efficiency and broad compatibility with industry-leading network platforms.
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| J9142B-C |  J4859A-C |  J8177D-C |  J4858C-C |  J8177B-C | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP+ | SFP+ | SFP+ | SFP+ | QSFP |
| Data Rate | 10G | 10G | 10G | 10G | 100G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | 1310 nm | 850 nm | 850nm | 850 nm | 1310 nm |
| Transmission Distance | Short-Range | Short-Range | Short-Range | Short-Range | Short-Range |
| Fiber Type | Single-mode | Multi-mode | Multi-mode | Multi-mode | Multi-mode |
| Max Distance | 10 km | 300 meters | 300 meters | 300 meters | 150 meters |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Power Consumption | 1.5 W | 3.5 W | 3.5W | 3.5 W | 10W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista |
| Product Name | J9142B-C SFP+ Optical Transceiver | J4859A-C 10GBASE-SR SFP+ Transceiver | J8177D-C 10G SFP+ Optical Transceiver | J4858C-C 10G SFP+ Transceiver | J8177B-C 100G QSFP Transceiver |
| Height | 0.87 inches | 0.5 inches | 0.28 inches | 0.33 inches | 0.5 inches |
| Width | 1.66 inches | 0.9 inches | 0.87 inches | 2.17 inches | 0.8 inches |
| Depth | 0.30 inches | 0.4 inches | 1.1 inches | 0.5 inches | 1.2 inches |
| Weight | 0.12 lbs | 0.08 lbs | 0.05 lbs | 0.06 lbs | 0.1 lbs |
Reliable BX-D BiDi performance. Successfully doubled our fiber capacity over single strands. Perfectly compatible with HP X122 requirements. Very stable.
Exceptional signal clarity on single-fiber runs. Recognized instantly by our switches. A high-quality, professional solution for efficient fiber utilization.
Solid 1G BiDi connectivity. No configuration headaches and steady throughput. These BX-D modules are a perfect match for our network.
Impressive reliability for single-strand fiber. The HP gear identifies it correctly. Rock-solid performance and great value for our team.
High-quality BiDi optics. They offer perfect compatibility and clean signaling. Essential for our fiber-constrained site connections. Five stars.
Steady and dependable BX-D link. The build quality is excellent, providing a reliable single-strand connection for our branch offices.
The J9142B-C is a 1 Gigabit SFP transceiver with LC duplex interface and bidirectional (BX-D) operation, fully compatible with HP X122 switches and routers for single-mode fiber links.
The J9142B-C supports single-mode fiber (SMF) applications using standard LC connectors for long-reach data transmission.
This transceiver delivers reliable links up to 20 kilometers over single-mode fiber at 1 Gbps data rate.
It uses a 1310 nm transmit laser and a 1490 nm receiver, enabling bidirectional communication over a single fiber pair.
Yes, the J9142B-C can be inserted or removed without powering down the host device, ensuring uninterrupted network operation.
Yes, the module offers DDM (SFF-8472) for real-time monitoring of optical power, temperature, voltage and laser bias.
It is compatible with HP X122 series switches and routers that support 1 Gbps SFP LC BX-D modules.
Power down the port, insert the module into the SFP slot until it clicks, connect the LC fiber cables, then power up and verify link status.
The transceiver operates reliably between –5 °C and +70 °C ambient temperature.
Yes, you can mix it with other SFP types, but ensure matching wavelengths and distance ratings for proper bidirectional BX operation.
It supports a data rate of 1.25 Gbps (Gigabit Ethernet) over single-mode fiber.
Yes, BX-D modules require correct transmit/receive pairing; TX on one end must match RX on the opposite end using a crossover or paired fiber.
It includes a standard 1-year limited warranty covering defects in materials and workmanship under normal use.
The module is rated for –5 °C to +70 °C; for temperatures below –5 °C or above +70 °C, select an industrial-grade transceiver.
It’s ideal for campus networks, metro Ethernet, FTTH, and data center uplinks requiring 20 km single-mode links.
Use your switch’s interface or DDM monitoring to confirm optical power, temperature, and link/trunk status for each port.
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