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