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JL308
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Aruba 40G QSFP+ LC BiDi 150m MMF XCVR
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JL308
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- Aruba 40G QSFP+ LC BiDi 150m MMF XCVR
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JL308 Overview
JL308 is a high-performance SFP+ transceiver designed for 10G Ethernet applications in data centers and enterprise networks. This module features an LC connector and supports a short-range transmission distance over multi-mode fiber, making it ideal for high-speed, low-latency communications in critical network environments.
JL308 delivers reliable performance with support for Ethernet protocols and adheres to a compact SFP+ form factor, ensuring seamless integration into existing telecom and network infrastructures. Its optimized physical dimensions and robust design also cater to rigorous operating conditions, providing an excellent solution for modern high-speed network connectivity requirements.
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JL308 Specifications
- Product Type
- Transceiver
- Form Factor
- SFP+
- Data Rate
- 10G
- Connector Type
- LC
- Wavelength
- 850 nm
- Transmission Distance
- Short-Range
- Fiber Type
- Multi-mode
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco / Juniper / Huawei / Arista
- Weight
- 0.05 lbs
- Max Distance
- 300 meters
- Power Consumption
- 1.5W
- Width
- 0.5 inches
- Depth
- 0.75 inches
- Height
- 0.125 inches
- Product Name
- JL308 10GBASE-SR SFP+ Transceiver
JL308 Use Case
High-Density Spine-Leaf Data Center Interconnect
In a hyperscale data center deploying Aruba 40G QSFP+ LC BiDi 150m MMF transceivers (JL308), network engineers replace legacy 10G links with 40G BiDi optics over existing OM4 fiber trunks. This use case halves fiber count, maximizes port density on spine and leaf switches, and delivers 4× greater East-West throughput—boosting VM migration speeds by up to 300% and lowering cabling and operational costs.
Campus Backbone Upgrade for Education and Research
A large university leverages JL308 Aruba 40G QSFP+ LC BiDi modules to modernize its multimode fiber campus backbone across 120-150m building links. By using BiDi optics on standard LC duplex patches, IT staff avoid costly re-cabling, achieve seamless 40G uplinks between core switches, and support bandwidth-hungry e-learning, VR labs, and big-data research applications—improving network resilience and cutting infrastructure refresh expenses by 40%.
High-Performance Computing Cluster Node Interconnect
An HPC center implements Aruba JL308 40G QSFP+ LC BiDi 150m MMF transceivers to link compute nodes and storage arrays within rack-to-rack distances under 150 meters. This setup delivers ultra-low latency and 40G bandwidth per port, enabling parallel processing workloads (MPI, AI training, scientific simulations) to scale efficiently. The outcome is a 50% reduction in interconnect congestion and a 25% performance uplift in distributed compute tasks.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| JL308 |  J4858C |  J4859D (5 Units) |  JL563A |  J4860D | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP+ | SFP+ | QSFP+ | SFP | SFP+ |
| Data Rate | 10G | 10G | 40G | 10G | 10G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | 850 nm | 850 nm | 850 nm | 850 nm | 850nm |
| Transmission Distance | Short-Range | Short-Range | Short-Range | Short-Range | Short-Range |
| Fiber Type | Multi-mode | Multi-mode | Multi-mode | Multi-mode | Multi-mode |
| Max Distance | 300 meters | 300 meters | 300 meters | 300 meters | 300 meters |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Ethernet |
| Power Consumption | 1.5W | 3.8W | 3.5W | 1.5 W | 3.0W |
| 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 | JL308 10GBASE-SR SFP+ Transceiver | J4858C 10G SFP+ Optical Transceiver | J4859D QSFP+ Transceiver Module (5 Units) | JL563A 10G SFP Transceiver | J4860D 10G SFP+ Transceiver |
| Height | 0.125 inches | 0.12 inches | 0.9 inches | 0.8 inches | 0.9 inches |
| Width | 0.5 inches | 0.65 inches | 0.7 inches | 1.2 inches | 0.65 inches |
| Depth | 0.75 inches | 0.65 inches | 0.4 inches | 1.5 inches | 1.5 inches |
| Weight | 0.05 lbs | 0.05 lbs | 0.2 lbs | 0.05 lbs | 0.1 lbs |
Reviews & Ratings
I
Imran Foxley
4
Consistent short-range 40G links.
N
Niels Kristensen
5
Stable bidirectional performance.
H
Hamid Loughton
5
Easy deployment.
J
Jonathan Reed
5
Strong Aruba optic.
Questions & Answers
What is the Aruba 40G QSFP+ LC BiDi 150m MMF XCVR (SKU: JL308)?
The Aruba 40G QSFP+ LC BiDi 150m MMF XCVR (SKU: JL308) is a 40 Gbps bi-directional multimode fiber transceiver designed for high-density data center and campus interconnects over duplex LC connectors up to 150 meters on OM3/OM4 fiber.
Which fiber connectors and cable types are compatible with the Aruba JL308 transceiver?
The JL308 transceiver uses standard duplex LC connectors with OM3 and OM4 multimode fiber cables.
What is the maximum transmission distance of this Aruba 40G QSFP+ BiDi transceiver?
This transceiver supports a maximum reach of 150 meters over OM3 or OM4 multimode fiber.
What data rate and protocol does the Aruba JL308 support?
The Aruba JL308 supports 40 Gigabit Ethernet (40GbE) using the QSFP+ MSA protocol.
Can I use the Aruba JL308 with non-Aruba network devices?
The Aruba 40G QSFP+ LC BiDi XCVR is fully compatible with Aruba switches and interoperable with any QSFP+ port adhering to the MSA specification.
Which wavelengths are used for bidirectional transmission on this module?
The JL308 module transmits and receives over dual 850 nm wavelengths for bidirectional 40 Gbps operation on multimode fiber.
How do I install the Aruba 40G QSFP+ LC BiDi transceiver?
To install the Aruba JL308, insert the QSFP+ module into an available port until the latch clicks and connect duplex LC multimode fiber cables to the module’s LC ports.
Is the Aruba JL308 module hot-swappable?
Yes, the Aruba JL308 is hot-swappable, allowing insertion and removal without powering down the host device.
Does this transceiver support digital diagnostics monitoring (DDM)?
Yes, this transceiver supports digital diagnostics monitoring (DDM) to report real-time parameters such as temperature, laser bias current, and optical power levels.
What is the operating temperature range of the JL308 transceiver?
The operating temperature range for the Aruba JL308 is 0 °C to 70 °C (32 °F to 158 °F).
What is the power consumption of the Aruba 40G QSFP+ BiDi XCVR?
This Aruba QSFP+ XCVR consumes a typical power of 3.5 Watts during normal operation.
What is the MTBF or reliability rating of this module?
The JL308 offers a Mean Time Between Failures (MTBF) of over 2,000,000 hours for reliable performance in enterprise environments.
What warranty coverage is provided with SKU: JL308?
Aruba provides a limited lifetime warranty on the 40G QSFP+ LC BiDi 150m MMF XCVR (SKU: JL308), covering defects in materials and workmanship.
How can I troubleshoot connectivity issues with this transceiver?
To troubleshoot connectivity, verify fiber polarity and cleanliness, inspect LC connectors for damage, check digital diagnostics for optical levels, and confirm switch port configuration.
Is the Aruba JL308 RoHS compliant and certified?
Yes, the Aruba JL308 is RoHS compliant and meets industry standards for quality and electromagnetic compatibility.
How should I clean and maintain the transceiver and fiber connectors?
Maintain optimal performance by cleaning LC fiber connectors with approved fiber cleaners or lint-free wipes and storing the transceiver in dust-proof caps when not in use.