Q1: What is an SFP-1G-TX module?
A: The SFP-1G-TX module is a Small Form-factor Pluggable (SFP) copper transceiver that supports Gigabit Ethernet (1000 Mbps) over standard twisted-pair copper cabling (Cat5e/Cat6) with an RJ-45 interface.
Q2: What is the maximum transmission distance?
A: Up to 100 meters over Cat5e or better copper cable, following IEEE 802.3ab standard.
Q3: What connector does SFP-1G-TX use?
A: It uses a standard RJ-45 connector for copper twisted-pair networking.
Q4: Is SFP-1G-TX compatible across different brands?
A: Yes. It is MSA-compliant and compatible with major brands like Cisco, Juniper, Arista, Huawei, Meraki, Extreme, Dell, etc.
Q5: Does it support hot-swapping?
A: Yes, SFP-1G-TX modules are hot-pluggable and can be inserted or removed without powering off the device.
Q6: Does the module support DDM (Digital Diagnostic Monitoring)?
A: Most copper SFP modules do not support DDM, since they lack optical diagnostics. Some might offer limited electrical diagnostics but typically not full SFF-8472 support.
Q7: Can SFP-1G-TX operate in SFP+ (10G-capable) slots?
A: Yes, it can operate in 10G-capable SFP+ slots, providing 1 Gbps link speed. However, it will not function in standard 1G-only ports.
Q8: What is the power consumption?
A: Typically low-around <1.3 W, often close to 1 W depending on vendor implementation.
Q9: What temperature range is supported?
A: Standard commercial modules operate from 0 C to 70 C; industrial-grade versions may span -40 C to 85 C.
Q10: What IEEE standard defines this transceiver?
A: Complies with IEEE 802.3ab standard for 1000BASE-T Ethernet over twisted-pair copper cabling.
Q11: How to verify compatibility with network devices?
A: Check vendor documentation for support of generic 1000BASE-T SFP modules and whether SFP+ ports are backward-compatible. Modules labeled SFP-1G-TX are widely supported across brands.
Q12: What applications is SFP-1G-TX commonly used for?
A: Used for short-range copper connections such as switch uplinks, network edge devices, or wherever fiber is not available but RJ-45 copper cabling is standard.
Q13: Is negotiation possible to 100 Mbps or 10 Mbps?
A: No. SFP-1G-TX modules typically only negotiate at 1 Gbps and do not support lower speeds via auto-negotiation.
Q14: Are there variants for extended reach or industrial use?
A: Yes, certain versions offer industrial-grade temperature support (40 C to 85 C) and lifetime warranties for harsh environments and high reliability.