6605454-1 - 1-Port RJ45 10/100 Base-T Magjack | Bel Fuse
MPN: 6605454-1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.86 | $5.86 |
| 10 | $5.45 | $54.50 |
| 100 | $4.95 | $495.00 |
| 500 | $4.42 | $2,210.00 |
| 1,000 | $3.92 | $3,920.00 |
6605454-1 Overview
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.
Drop-in alternatives for 6605454-1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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1-6605454-1
✅ Drop-In📋 Reference alternative (not in catalog)
6605454-1
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →6605445-6
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6605424-1
✅ Drop-In📋 Reference alternative (not in catalog)
1840448-6
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6605454-1 Maximum Ratings & Electrical Characteristics
| Product Type | Modular Connector with Magnetics (MagJack) |
| Series | MAG45 |
| Number of Ports | 1 |
| Number of Positions/Contacts | 8P8C (RJ45) |
| Ethernet Speed | 10/100 Base-T (Fast Ethernet) |
| AutoMDIX Support | Yes |
| Mounting Type | Through Hole, Right Angle |
| Termination Style | Solder (8 terminals) |
| Pin Pitch | 2.54 mm |
| Shielding | Shielded |
| Integrated Magnetics | Yes (transformer + common-mode choke) |
| Isolation Voltage | 1500 VAC (typical for integrated magnetics) |
| RoHS Status | Compliant |
6605454-1 standard Pin Configuration Guide
Pin configuration for 6605454-1 (standard package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for 6605454-1.
Refer to the datasheet for full pin configuration.
Typical Applications
6605454-1 is suitable for 7 applications: Industrial Ethernet Switches, IP Surveillance Cameras, Factory Automation Controllers, Network Interface Cards (NICs) and Adapters, Serial-to-Ethernet Gateways, Embedded Networking Equipment, Telecommunications Equipment.
Industrial Ethernet Switches
The 6605454-1's integrated 10/100 Base-T magnetics and through-hole right-angle construction make it a standard choice for managed and unmanaged industrial Ethernet switches deployed on factory floors. The single-port 8P8C layout supports Fast Ethernet connections to PLCs, HMI panels, and motor drives, while the integrated transformer provides the 1500 VAC isolation required between the cable and the PHY side. Combined with AutoMDIX, the connector auto-corrects TX/RX polarity, eliminating crossover-cable mistakes in field installations. The MAG45 footprint is supported across reference designs from major Ethernet PHY vendors, simplifying hardware bring-up. Designers should still follow standard 75 ohm differential impedance routing between the connector and the PHY to maintain signal integrity at 100 Mbps.
Recommended
IP Surveillance Cameras
IP surveillance cameras benefit from the 6605454-1's compact integrated magnetics, which shrink the PCB footprint and reduce BOM cost - critical for high-volume camera production. The 10/100 Base-T capability matches the bandwidth needs of 1080p and 4K IP cameras with H.265 compression, while AutoMDIX removes the hassle of crossover cable handling during installation. The through-hole right-angle mounting provides mechanical robustness against vibration in outdoor pole-mount or in-vehicle deployments. The MAG45 footprint is compatible with common PoE-derivative layouts, allowing camera designers to upgrade to PoE later without a complete redesign. Always pair the connector with a chassis-ground connection to the metal shield for ESD robustness in outdoor enclosures.
Recommended
Factory Automation Controllers
Factory automation controllers (PLCs, distributed I/O, motor drives) rely on the 6605454-1 for deterministic 10/100 Ethernet connectivity to supervisory control systems. The integrated isolation transformer withstands the EMI noise typical of motor-drive environments, while the right-angle through-hole pins survive the mechanical vibration of industrial cabinets. AutoMDIX simplifies field wiring by eliminating crossover-cable requirements - a significant reliability advantage when cables are terminated by non-IT staff. The connector's compact MAG45 footprint fits inside IP65-rated enclosures where board space is at a premium. For Profinet, EtherNet/IP, or EtherCAT compatibility, pair with a PHY that supports those industrial protocols; the 6605454-1 is transparent to the protocol layer.
Recommended
Network Interface Cards (NICs) and Adapters
USB-to-Ethernet adapters, PCIe NICs, and embedded networking cards use the 6605454-1 to expose a single Fast Ethernet port with minimal BOM. The integrated magnetics eliminate 4-6 discrete components that would otherwise crowd a small NIC board, and the through-hole right-angle pins simplify wave-solder assembly for low-to-mid volume production runs. The 8P8C contact layout supports standard RJ45 cables and patch cords. AutoMDIX ensures the adapter works with any switch port, regardless of whether it is a normal port or an uplink port. For USB 3.0 to Gigabit Ethernet adapters, designers should select a gigabit-rated MagJack instead - the 6605454-1's 10/100 limit becomes the bandwidth bottleneck.
Recommended
Serial-to-Ethernet Gateways
Serial-to-Ethernet gateways and protocol converters use the 6605454-1 to bridge legacy RS-232/RS-485 equipment onto modern Ethernet networks. The single-port 10/100 MagJack is a cost-effective solution for gateways serving one or two serial ports, where gigabit speeds are unnecessary. The integrated transformer isolation protects the gateway's sensitive microcontroller from cable-side ESD events and ground loops common in industrial installations. AutoMDIX removes crossover-cable concerns when installing gateways in the field. The MAG45 footprint fits in DIN-rail enclosures, which are standard for industrial gateways. For multi-port gateways, consider stacking multiple 6605454-1 connectors or selecting a multi-port MagJack from the same Bel Fuse MAG45 family.
Recommended
Embedded Networking Equipment
Embedded networking equipment such as wireless access points, IoT gateways, and edge-compute nodes benefit from the 6605454-1's compact integrated magnetics, which keep the BOM small and the PCB layout clean. The 10/100 Base-T capability matches the backhaul bandwidth typical of these devices, especially when combined with a Wi-Fi 6 or 5G radio front-end. The through-hole right-angle construction withstands the mechanical stress of repeated cable insertions in field-deployed equipment. AutoMDIX simplifies installation by eliminating cable-orientation errors - important for non-technical end users. For designs requiring Power over Ethernet, designers should specify a PoE-rated variant in the same MAG45 family footprint to drop in without layout changes.
Recommended
Telecommunications Equipment
Telecommunications infrastructure equipment such as media converters, VoIP phones, and small-cell base stations use the 6605454-1 to terminate 10/100 Ethernet connections in space-constrained form factors. The integrated magnetics simplify EMI compliance by providing common-mode chokes inside the connector body, reducing conducted emissions that would otherwise require filtering on the PCB. The through-hole right-angle pins provide the mechanical strength needed for telecom rack-mount equipment subject to fan-induced vibration. The 8P8C contact layout supports standard RJ45 patch cords and structured cabling. For PoE-powered VoIP phones, designers should verify the connector's current rating against the phone's power consumption; the 6605454-1 is rated for data-only applications in its standard configuration.
Recommended
Recommended Products Summary
Engineering reference data for 6605454-1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 1-6605454-1 | 6605445-6 | 6605424-1 | 1840448-6 |
|---|---|---|---|---|---|
| Brand | Bel Fuse (TRP) | Bel Fuse | Bel Fuse | Bel Fuse | Bel Fuse |
| Package | Through-Hole RA RJ45 (MAG45) | Through-Hole RA RJ45 (MAG45) - same | Through-Hole RA RJ45 (MAG45) - same | Through-Hole RA RJ45 (MAG45) - same | Through-Hole RA RJ45 (MAG45) - same |
| Number of Ports | 1 | 1 | 1 | 1 | 1 |
| Ethernet Speed | 10/100 Base-T | 10/100 Base-T | 10/100 Base-T | 10/100 Base-T | 10/100 Base-T |
| AutoMDIX | Yes | Yes | Yes | Yes | Yes |
| Integrated Magnetics | Yes (1:1 transformer + CMC) | Yes | Yes | Yes | Yes |
| Pin Pitch | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant |
| Single-Piece Price (USD) | $5.86 | $5.86 (est.) | $5.86 (est.) | $5.86 (est.) | $5.86 (est.) |
Key Differentiators
- AutoMDIX support eliminates crossover-cable handling in field installations (vs 0826-1G1T-23-F)
- MAG45 family footprint widely supported across Ethernet PHY reference designs (vs Generic RJ45 + discrete magnetics)
- Single-piece pricing around $5.86 is competitive for an integrated MagJack (vs 6605445-6 (alternate MAG45 SKU))
Design Notes
Maintain 75 ohm differential impedance between the 6605454-1 MagJack and the Ethernet PHY, with trace lengths matched within 2 mm to preserve signal integrity at 100 Mbps. Keep PHY-to-MagJack traces short (typically <25 mm) and avoid routing them across noisy power or clock planes. Place the connector's chassis ground pin directly to the board's chassis ground pour, not the digital ground, to provide ESD discharge path.
The 6605454-1 is rated for 10/100 Base-T only; do not use it for Gigabit Ethernet (1000 Base-T) designs that require all four differential pairs - this part supports only two pairs for TX/RX. For gigabit applications, select a 1000 Base-T MagJack from the same Bel Fuse MAG45 family. Also verify LED pin connections against the specific variant, as different MAG45 part numbers have different LED indicator configurations.
The integrated magnetics inside the 6605454-1 provide 1500 VAC isolation between the cable side and the PHY side, but proper PCB layout is still required to maintain common-mode rejection. Route the center tap of each transformer pair through a 0.1 uF bypass capacitor to ground placed within 5 mm of the MagJack pin. Avoid placing any digital signals or switching regulators within 10 mm of the connector body to minimize coupling.
The 6605454-1's through-hole right-angle construction provides good thermal dissipation through the PCB pins, but the connector's rated current capacity should be observed in PoE or high-power applications. While the standard part is rated for data-only Fast Ethernet, the integrated magnetics' common-mode choke can handle moderate DC bias current if the design routes PoE through the same connector. Verify against the latest Bel Fuse MAG45 family datasheet for specific current ratings.
Compliance Information
RoHS compliant per Newark and LCSC product listings. AEC-Q100 not applicable for a connector with magnetics; industrial temperature variants are available within the MAG45 family if required.