LINK-PP LPJK0071AWNL Gigabit Tab-Up RJ45 Connector with LED

0826-1G1T-23-F 10/100/1000 Base-T RJ45 Magjack Overview

The 0826-1G1T-23-F is a premier single-port (1x1) Gigabit Integrated Connector Module (ICM) engineered for high-bandwidth networking devices. Featuring an advanced 12-core magnetic topology with integrated common-mode filtering across all four differential pairs, this Tab-Up, Non-PoE connector delivers ultra-low insertion loss up to 125 MHz, superior EMI suppression, and 50 micro-inch gold plating for demanding commercial Ethernet hardware.

• Product Type: Integrated Connector Module (ICM).
• Data Rate: Supports 10/100/1000 Base-T Gigabit Ethernet applications.
• Mounting: through-hole mount designed for right-angle mounting onto a printed circuit board (PCB).
• Shielding: The 0826-1G1T-23-F is shielded to protect against electromagnetic interference (EMI), ensuring signal integrity.
• LED Indicators: This model typically includes integrated LEDs to indicate link activity and speed.
• AutoMDIX: Automatically configures the internal wiring to work with either straight-through or crossover Ethernet cables, simplifying installation.
• Operating Temperature: Operate in a 0°C to 70°C standard temperature range.

Technical Specifications Table

Internal 12-Core Magnetics & Gigabit Schematic Topology

[ PHY CHIP SIDE ]                    [ CABLE / RJ45 SIDE ]
    Channel 1: TRD1+ (Pin 11) ──┐ 1CT : 1CT ┌───[CMC]─── J1 (TRP1+)
               TRCT1 (Pin 12) ──┼───┐   ┌───┤
               TRD1- (Pin 10) ──┘   │   │   └───[CMC]─── J2 (TRP1-)
                                    │   │
    Channel 2: TRD2+ (Pin 4)  ──┐ 1CT : 1CT ┌───[CMC]─── J3 (TRP2+)
               TRCT2 (Pin 6)  ──┼───┐   ┌───┤
               TRD2- (Pin 5)  ──┘   │   │   └───[CMC]─── J6 (TRP2-)
                                    │   │
    Channel 3: TRD3+ (Pin 3)  ──┐ 1CT : 1CT ┌───[CMC]─── J4 (TRP3+)
               TRCT3 (Pin 1)  ──┼───┐   ┌───┤
               TRD3- (Pin 2)  ──┘   │   │   └───[CMC]─── J5 (TRP3-)
                                    │   │
    Channel 4: TRD4+ (Pin 8)  ──┐ 1CT : 1CT ┌───[CMC]─── J7 (TRP4+)
               TRCT4 (Pin 7)  ──┼───┐   ┌───┤
               TRD4- (Pin 9)  ──┘   │   │   └───[CMC]─── J8 (TRP4-)
                                    ▼   ▼
               [ Bob Smith Termination: 4x 75Ω Resistors + 1000pF/2kV to Shield ]

Engineering Design Rules:

1. 12-Core Full Duplex Isolation: Unlike entry-level 8-core connectors, the 0826-1G1T-23-F integrates dedicated isolation transformers and common mode filters across all 4 differential pairs (TRP1 through TRP4). This architecture delivers continuous -30 dB CM-to-CM rejection and prevents crosstalk across simultaneous transmit/receive lanes.
2. Bandwidth Headroom up to 125 MHz: Standard Gigabit Ethernet operates around a 62.5 MHz Nyquist frequency. This MagJack maintains an insertion loss of better than -1.2 dB up to 125 MHz, leaving exceptional margin for high-speed signal integrity and noisy industrial PCB backplanes.
3. Bob Smith Termination: The cable-side center taps terminate into four 75 Ω balance resistors tied through a 1000 pF/2 kV high-voltage ceramic capacitor directly to the outer shield. Keep out all signal routing and power planes directly underneath this shaded termination footprint.

LPJK0071AWNL RJ45 Connector Datasheet -Schematic

• RoHS Material Screening: Evaluated with X-Ray Fluorescence (XRF) to ensure total compliance with RoHS and REACH standards.
• EMI Shield Ground Continuity Test: Verifies low-impedance ground bonding through all copper alloy shield tabs, confirming −30 dB CM-to-CM noise isolation.
• 100% 1500 Vrms HiPot Dielectric Isolation: Every individual component is tested between PHY-side pins and RJ45 cable contacts at 1500 Vrms to ensure IEEE 802.3 compliance.
• Automated Magnetic Core Analyzer: Validates all 12 cores for 1CT:1CT (±2%) turns ratios, ≥350 μH inductance with 8 mA DC bias, and insertion loss across 1 MHz to 125 MHz.

Technical FAQs

Q1: Does Bel Fuse 0826-1G1T-23-F support Power over Ethernet (PoE)?

No. The 0826-1G1T-23-F is a Non-PoE Gigabit connector. It is engineered strictly for high-speed data transmission up to 1000BASE-T. If your system requires PoE or PoE+ power injection, you should select PoE-rated series like Bel Fuse 0826-1X1T or LINK-PP LPJK series.

Q2: What is the significance of the 12-core magnetic design in 0826-1G1T-23-F?

The 12-core topology incorporates dedicated isolation transformers and common mode filters across all 4 differential pairs (8 conductors) required for Gigabit Ethernet. This design minimizes packet collisions, eliminates inter-pair crosstalk, and ensures high signal integrity up to 125 MHz.

Q3: What are the LED colors and polarities on 0826-1G1T-23-F?

Both LED 1 and LED 2 are standard Green LEDs. LED 1 (right) is driven with positive on Pin 14 and ground on Pin 13. LED 2 (left) is driven with positive on Pin 16 and ground on Pin 15. Both feature a forward voltage drop of approximately 2.2V at 20 mA.