LPJG19801DNL 1×1 Tab-Up SMT RJ45 Connector with 10/100/1000 Magnetic

The LINK-PP LPJG19801DNL (Drawing: LP18120302) is a rugged single-port (1×1) Surface Mount Technology (SMT) Gigabit Integrated Connector Module (ICM) engineered for automated high-volume pick-and-place assembly. Featuring an advanced LCP (Liquid Crystal Polymer) UL94V-0 housing rated for convection reflow soldering, an extended operating temperature of -40°C to +85°C, and a Tab-Up, LED-less profile, this connector delivers continuous Gigabit Ethernet performance with ultra-low -1.0 dB max insertion loss and 1500 Vrms dielectric isolation.

LPJG19801DNL Surface Mount RJ45 Connector Specifications

Key Features of SMT Gigabit RJ45 MagJack

LPJG19801DNL is a LINK-PP 1×1 SMT Gigabit RJ45 MagJack for 10/100/1000BASE-T Ethernet. It integrates four 1CT:1CT ±2% magnetic channels, provides 350µH minimum OCL at 8mA DC bias and 1500Vrms isolation, uses a Tab-Up configuration without LEDs, and operates from -40°C to +85°C.

1. High-Speed Gigabit & RF Performance

* 1000BASE-T Gigabit Ethernet: Single-port (1×1) ICM fully compliant with IEEE 802.3 standards for high-speed routing and industrial switching.
* Ultra-Low Insertion Loss: Flat attenuation profile of -1.0 dB Max across 1 MHz – 100 MHz for optimal eye-diagram margin.
* Pure Data Non-PoE Design: Dedicated signal routing optimized for maximum signal integrity without DC power interference.

2. Fully Automated SMT & Thermal Reflow Resilience

* Surface Mount Technology (SMT): Designed for high-volume automated tape-and-reel pick-and-place assembly, eliminating manual through-hole secondary soldering.
* High-Temp LCP Housing: Built with Liquid Crystal Polymer (LCP + 30% G.F.) rated UL 94V-0, capable of withstanding lead-free convection reflow soldering up to **250°C for 5 Seconds Max.

3. Rugged Industrial Construction

* Extended Industrial Operating Temperature: Validated across -40°C to +85°C for mission-critical outdoor and factory floor applications.
* SUS 304 Stainless Steel Shield: Rugged 0.20 mm stainless steel enclosure provides superior corrosion resistance, structural rigidity, and robust EMI suppression.
* Tab-Up & Without LED Configuration: Unlit (Without LED) front bezel eliminates light pipe interference and frees up PCB edge routing channels.

4. Global Safety & Compliance

* UL Safety Certified: Recognized Component under UL File Number E321120.
* Green Compliance: 100% RoHS 2011/65/EU compliant for lead-free SMT assembly.

LPJG19801DNL SMT 10Pins RJ45 Connector Datasheet:

Magnetics Electrical Specifications:

Internal 10-Pin SMT Magnetics & Schematic Topology:

[ PHY CHIP SIDE ]                    [ CABLE / RJ45 SIDE ]
    Channel 1: TD1+ (Pad 1) ──┐ 1CT : 1CT ┌───[CMC]─── J1 (TX1+)
               TD1- (Pad 2) ──┘           └───[CMC]─── J2 (TX1-)
    Channel 2: TD2+ (Pad 3) ──┐ 1CT : 1CT ┌───[CMC]─── J3 (TX2+)
               TD2- (Pad 4) ──┘           └───[CMC]─── J6 (TX2-)
    Center Tap 1 & 2 ──────────── Pad 5 ──┐
    Center Tap 3 & 4 ──────────── Pad 6 ──┼───┐
    Channel 3: TD3+ (Pad 7) ──┐ 1CT : 1CT ┌───[CMC]─── J4 (TX3+)
               TD3- (Pad 8) ──┘           └───[CMC]─── J5 (TX3-)
    Channel 4: TD4+ (Pad 9) ──┐ 1CT : 1CT ┌───[CMC]─── J7 (TX4+)
               TD4- (Pad 10) ─┘           └───[CMC]─── J8 (TX4-)
                                          ▼   ▼
               [ Bob Smith Termination: 4x 75Ω Resistors + 1000pF/2kV to Shield ]

Engineering SMT Advantages:

• Consolidated 10-Pad Layout: Signal leads are arranged in a single inline surface mount row with standard 1.27 mm pitch, optimizing high-speed differential signal breakout and eliminating via stubs associated with through-hole connectors.
• Dedicated Center Tap Pads (Pads 5 & 6): Center taps for channels 1/2 and 3/4 are routed to dedicated SMT pads, providing low-inductance paths for AC termination without internal loop ringing.
• High CMRR up to 150 MHz: Common mode rejection maintains ≤−30 dB up to 150 MHz, suppressing high-frequency harmonics generated by switching DC-DC converters in dense SMT boards.

Mechanical SMT Footprint & Reflow Soldering Guidelines:

1. Recommended PCB SMT Pad Dimensions:

- Signal Pads (Pads 1–10): 10 rectangular SMT pads of 0.80 mm width x 2.10 mm length
- Pad Pitch: Standard 1.27 mm pitch (Total signal span: 11.43 mm)
- Shield Grounding Pads: 2 heavy-duty side solder pads of 4.60 mm width x 3.26 mm length for robust mechanical retention and chassis grounding
- Coplanarity: All solder leads maintain strict coplanarity within <= 0.10 mm (0.004 inch)

2. Stencil Aperture & Solder Paste Recommendation:

- Recommended Stencil Thickness: 0.15 mm (6 mil) laser-cut stainless steel
- Solder Paste Alloy: SAC305 (Sn96.5 / Ag3.0 / Cu0.5) lead-free type 3 or type 4

3. Convection Reflow Profile:

- Preheat Zone: 150°C to 200°C for 60 to 120 seconds
- Liquidus Temperature (>217°C): 60 to 90 seconds
- Peak Reflow Temperature: 245°C ~ 250°C (Absolute Max: 250°C for 5 Seconds Max)
- Ramp-Down Cooling Rate: < 4°C / second

Mechanical SMT Footprint & Reflow Soldering Guidelines:

Q1: What makes LINK-PP LPJG19801DNL suitable for full SMT automated assembly?

Unlike through-hole connectors that require wave soldering or manual insertion, LPJG19801DNL is built with high-temperature LCP (Liquid Crystal Polymer) thermoplastic (UL 94V-0). It features 10 surface-mount gull-wing signal leads and two heavy-duty side ground tabs designed for tape-and-reel pick-and-place automation and standard lead-free convection reflow soldering (up to 250°C).

Q2: What is the operating temperature range of LPJG19801DNL?

LPJG19801DNL is rated for an extended industrial operating temperature range of -40°C to +85°C. It is fully qualified for harsh outdoor environments, industrial Ethernet switches, automation PLCs, and rugged embedded computers.

Q3: Does LPJG19801DNL feature built-in LEDs?

No. LPJG19801DNL is an unlit (Without LED) RJ45 connector. This eliminates light-pipe conflicts, simplifies PCB edge routing, and reduces SMT pad count on dense double-sided boards.