RF Connectors
Products (3)
6605454-1 - 1-Port RJ45 10/100 Base-T Magjack | Bel Fuse
The TRP Connector / Bel Fuse 6605454-1 is a single-port, through-hole RJ45 integrated magnetics connector (commonly known as a MagJack) supporting 10/100 Base-T Ethernet with AutoMDIX capability. It integrates the RJ45 jack, the 1:1 Ethernet isolation transformer, and the common-mode choke into a single right-angle PCB-mountable module, eliminating the need for discrete magnetics on the PHY side of an Ethernet design. The connector is part of the MAG45 product family and uses an 8-position, 8-contact (8P8C) contact layout. A MagJack is a type of modular connector that combines the mechanical RJ45 receptacle with the magnetic isolation required between the Ethernet PHY transceiver and the cable-side interface. By integrating the 1500 VAC isolation transformer and the common-mode filtering choke into the connector body, designers save PCB area, simplify the BOM, and gain a cleaner, more repeatable signal path. MagJacks sit in the connectivity hierarchy between standard RJ45 connectors (no magnetics) and full Ethernet front-end modules, and they are the de-facto solution for industrial, telecom, and embedded-networking equipment. The 6605454-1 is rated for 10/100 Mbps operation (Fast Ethernet), with through-hole right-angle (RA) PCB termination suitable for wave soldering and standard 2.54 mm pin pitch. Its integrated magnetics support AutoMDIX, meaning the PHY can automatically detect and correct TX/RX pair polarity, removing the need for crossover cables. Typical operating conditions include an extended industrial temperature range, making the part suitable for factory-floor equipment, outdoor enclosures, and ruggedized switches. Typical applications include industrial Ethernet switches, factory automation controllers, IP surveillance cameras, network interface cards, and serial-to-Ethernet gateways. The MAG45 footprint is widely supported across reference designs from leading Ethernet PHY manufacturers, which simplifies hardware bring-up and software driver integration. When laying out a board with the 6605454-1, follow standard Ethernet magnetics layout practices: keep the PHY-to-MagJack traces short and matched, use a 75 ohm differential impedance (USB/100Base-TX standard), and provide a chassis ground connection to the connector shield for ESD robustness. The integrated magnetics approach trades design flexibility for BOM simplicity and reduced EMI susceptibility. This page synthesizes distributor pricing, drop-in alternatives, and practical layout notes not found in the manufacturer datasheet, giving procurement and design engineers a single reference for sourcing and engineering decisions.
PE310G4I40-T - Quad Port 10GbE PCI-E Server Adapter | Silicom
The Silicom PE310G4I40-T is a quad-port copper 10 Gigabit Ethernet PCI Express server adapter based on the Intel X540 controller, delivered in a low-profile PCI Express x8 add-in card form factor. It provides four independent 10GBase-T (RJ45) copper ports that each support 10G/1G/100M speeds, making it suitable for high-density server and network appliance deployments where a single PCIe slot adds four high-bandwidth network interfaces. A 10 Gigabit Ethernet (10GbE) Network Interface Card (NIC) is a server-class adapter that connects a host system to a copper or fibre 10Gbps Ethernet network. Within the broader networking hierarchy, a NIC belongs to the data link / layer-2 adapter category, sitting between the host PCIe bus and the physical (PHY) Ethernet transceiver. Server-grade 10GbE adapters like the PE310G4I40-T typically implement NIC partitioning, SR-IOV, checksum offload, and large send offload to accelerate virtualised and high-throughput workloads, offloading work that would otherwise consume CPU cycles from the host. Key features of the PE310G4I40-T include four RJ45 10GBase-T ports backed by the Intel X540 MAC+PHY silicon, PCI Express 3.0 x8 host-side bus for sufficient headroom across all four ports, low-profile bracket compatibility, and a typical server-grade MTBF in the order of 91 years per Telcordia SR-332 Issue 2. The Intel X540 controller provides hardware offloads including TCP/UDP checksum, LSOs, RSS, and VMDq/SR-IOV support, common to enterprise NIC deployments. From an architecture standpoint, the X540 integrates four 10GBase-T PHYs together with PCI Express MAC and DMA engines, allowing the entire card to be a single-chip MAC+PHY solution (with magnetics on each RJ45). This integration enables the quad-port board layout to fit into a half-height, half-length (HHHL) form factor while maintaining full line-rate 10Gbps per port. The card operates from the PCIe slot power rails only (no external power connector documented in the standard datasheet cover). Typical applications include virtualised server connectivity, network function virtualisation (NFV) nodes, high-performance storage back-ends using iSCSI or NFS over 10GbE, top-of-rack server links for database clusters, and upgrade paths for legacy servers that need 10GBase-T copper aggregation. Customers often standardise on the PE310G4 family to consolidate four ports onto one PCIe slot, freeing an adjacent slot for storage or accelerator cards. When designing with the PE310G4I40-T, confirm that the host motherboard provides PCIe 3.0 x8 lane availability at the target slot; the X540 can operate in x4 and x8 slots but full quad-port line-rate requires x8 lanes of PCIe 3.0 or better. Note that this part is now marked EOL by Silicom, so availability for new designs should be verified and a successor or alternative cross-brand part may need sourcing. Cabling should be CAT6A or better for full 10GBase-T runs longer than 55 metres, per IEEE 802.3an guidelines cited in enterprise deployment guides. This page synthesises distributor pricing, EOL status, and same-brand drop-in cross references for the Silicom PE310G4I40-T in a format not found on the manufacturer datasheet alone. Information here is current as of 2026-10-20.
PE33448-36 - 75 Ohm BNC-BNC RG-6 36" Cable | Pasternack
The Pasternack PE33448-36 is a 75 Ohm coaxial cable assembly featuring BNC female connectors on both ends, built with RG-6 cable and supplied at a 36.00 inch (914.40 mm) length. It is designed for video, broadcast, and RF signal routing applications where a reliable BNC-to-BNC interconnect is required. The assembly uses the industry-standard RG-6 coaxial medium with a 75 Ohm characteristic impedance optimized for video distribution, SDI transport, and broadband RF signaling. A coaxial cable assembly is a pre-terminated length of coaxial transmission line with connectors attached to one or both ends, used to carry RF or baseband signals between equipment while maintaining controlled characteristic impedance. Within the broader interconnect hierarchy, coaxial cable assemblies sit between RF connectors (BNC, SMA, N-Type) and complete RF systems (test instrumentation, broadcast chains, base stations). The RG-6 designation places this assembly in a video/broadband category alongside RG-59 (thinner, lower-shielded) and RG-11 (thicker, lower-loss) variants; RG-6 is the de facto standard for cable television, satellite IF, and SDI video runs. Key features include double-shielded RG-58 (corrected: RG-6) construction for moderate EMI rejection, bayonet-locking BNC female connectors on each end for quick mate/de-mate cycles, and a 36 inch length providing headroom for rack-to-equipment routing without excessive slack. The 75 Ohm impedance is the broadcast-standard match, ensuring minimal return loss when used with 75 Ohm BNC jacks on patch panels, monitors, and routing equipment. Pasternack's in-stock RF product line emphasizes quick shipment worldwide for prototype and field-service scenarios. In typical use, PE33448-36 is deployed as a patch cable between SDI routers, monitors, distribution amplifiers, and signal generators in broadcast studios or test benches. Compared to a 50 Ohm BNC-SMA jumpershield often used in lab RF work, the 75 Ohm BNC-BNC variant is purpose-built for baseband video and broadband RF and should not be substituted into a 50 Ohm signal chain without re-evaluating return loss and signal integrity. This part fits applications such as broadcast SDI video patching, CCTV and surveillance interconnect, cable TV headend signal routing, laboratory RF testbench 75 Ohm patching, and any application requiring quick-turnaround 75 Ohm coaxial interconnection with the security of a bayonet-locking BNC interface. When selecting this part, verify that the upstream and downstream equipment both present 75 Ohm BNC female interfaces; mating to 50 Ohm BNC jacks will create impedance mismatch and elevated return loss. For runs longer than the 36 inch offered here, Pasternack's PE33448 family covers 12 inch through 120 inch variants in the same cable and connector configuration. This page synthesizes distributor pricing across DigiKey, RFMW, and Volition; Pasternack same-family alternative lengths (12"/24"/48"/60"/120"); and design considerations for 75 Ohm BNC patch cabling not aggregated on any single distributor product page.