2026年7月31日
What Is a Cable Assembly? Definition, Components, and Applications
What is a cable assembly? Learn the engineered definition per IPC/WHMA-A-620, key components, and applications. Avoid mismatched specs—read...
Detailed Product Information
Technical Data & Reference
Structured parameters, material notes, application context and frequently asked questions for engineering and procurement evaluation.
Competitor & Cross-Reference
- Alternative Type
- Drop-in Replacement
- Competitor Part Number
- Pulse J0011D21BNL / Bel Fuse SI-60062-F Alternative
- Mates With
- Standard RJ45 / 8P8C Male Ethernet Plugs (Cat5 / Cat5e Patch Cables)
Drop-in Replacement: This part is a direct, pin-compatible substitute for the competitor part number listed above. No design modification required.
Technical Specifications
- Connector Type
- RJ45 8P8C Female Magnetic Modular Jack (MagJack)
- Port Configuration
- 1x1 Single Port
- Data Rate / Standard
- 10/100Base-TX (Meets or exceeds IEEE 802.3)
- Mounting Type
- Through-Hole DIP / Right Angle
- Latch Orientation
- Tab-Down (Latch Bottom)
- Visual Indicators / LEDs
- Without LEDs
- Overall Dimensions (L x W x H)
- 21.35 mm x 15.95 mm x 13.50 mm (Excluding solder leads)
- Height Above PCB
- 13.50 mm (Nominal)
- Solder Tail Length
- 3.05 mm
- Signal Pin Pitch
- 1.27 mm / 2.54 mm grid (11.43 mm total span)
- PCB Hole Specifications
- 8x Ø0.90 mm (Signal P1–P8), 2x Ø1.60 mm (Locating), 2x Ø3.25 mm (Grounding)
- Shield Grounding Center Span
- 15.75 mm
- High-Voltage Isolation (Hi-Pot)
- 1500 Vrms, 1 mA Max. per IEEE 802.3
- Standard Compliance
- RoHS Compliant, UL 94V-0, IEEE 802.3
Material Composition
| Material | Value / Description |
|---|---|
| Housing & Insert Material | Thermoplastic, PBT, UL 94V-0, Black |
| Coil Base Material | Phenolic, PBT, UL 94V-0, Black |
| Contact Terminal Material | Phosphor Bronze |
| Contact Area Plating | 6µ" Gold Plating over 50µ" Nickel Underplate |
| Solder Area Plating | 100µ" Tin Plating over 50µ" Nickel Underplate |
| Coil Terminal | Copper Alloy (T = 0.40 x 0.40 mm Thickness) |
| Metal Shell Material & Plating | Copper Alloy, 30µ" Nickel Plated Overall |
Technical Characteristics
| Characteristic | Value |
|---|---|
| Turn Ratio (±2%) | 1CT:1CT (Transmit & Receive) |
| Inductance (OCL) | 350 µH Min. @ 100 kHz, 0.1V, 8 mA DC Bias |
| Insertion Loss | -1.0 dB Max. @ 1.0–100 MHz |
| Return Loss | -20 dB Min. @ 1–30 MHz; -16 dB Min. @ 30–60 MHz; -12 dB Min. @ 60–80 MHz |
| Crosstalk | -40 dB Min. @ 1–30 MHz; -35 dB Min. @ 30–80 MHz |
| Common Mode Rejection | -35 dB Min. @ 1–100 MHz; -20 dB Min. @ 50–150 MHz |
| Operating Temperature Range | 0°C to +70°C |
| Storage Temperature Range | -40°C to +85°C |
| General Tolerances | 0 Place: ±0.50 mm (±0.02"); 1 Place: ±0.30 mm (±0.015"); 2 Place: ±0.20 mm (±0.01"); 3 Place: ±0.10 mm (±0.005"); Angular: ±2° |
Application Scenarios
-
10/100Base-TX industrial Ethernet switches, unmanaged hubs, and routers
-
Embedded Single Board Computers (SBC) and IoT gateway controllers
-
Programmable logic controllers (PLCs) and factory automation hardware
-
Smart utility metering systems, commercial POS terminals, and ticketing machines
-
Network surveillance IP cameras, servers, and telecommunications gear
Frequently Asked Questions
What are the technical benefits of an integrated transformer in this RJ45 connector?
Integrating the 1CT:1CT isolation transformer and common-mode filter inside the RJ45 body eliminates discrete magnetic modules on the PCB. This reduces component count, minimizes high-frequency trace lengths, optimizes return loss, and guarantees 1500Vrms IEEE 802.3 dielectric isolation against ground loops and voltage transients.
What is the recommended PCB footprint and hole layout for this magnetic modular jack?
The PCB requires 8x Ø0.90mm through-holes on a 1.27mm / 2.54mm grid (11.43mm span) for signal pins P1–P8, two Ø1.60mm locating peg holes, and dual Ø3.25mm shield grounding holes spaced 15.75mm apart with standard ±0.05mm positioning tolerances.
How do the magnetic and electrical specifications perform under DC bias current?
The internal transformer provides an open circuit inductance (OCL) of at least 350µH at 100 kHz (0.1V) even when subjected to an 8mA DC bias current. It maintains insertion loss below 1.0 dB up to 100 MHz and return loss better than -20 dB across 1–30 MHz for robust 100Base-TX data integrity.
How do the materials and plating protect signal performance across operating temperatures?
Contacts are phosphor bronze with 6µ" gold on the mating area and 100µ" tin on solder tails over a 50µ" nickel underplate, encased in a UL 94V-0 PBT housing and 30µ" nickel-plated copper alloy shell. This provides continuous 360-degree EMI isolation and low contact resistance across 0°C to +70°C operating temperatures.
Overview and Application Notes
This 100Base-TX RJ45 8P8C female magnetic modular jack (MagJack) integrates an internal 1CT:1CT isolation transformer and common-mode filtering into a single 1×1 port assembly. Featuring a tab-down latch orientation, 13.50mm height above PCB, and right-angle through-hole DIP mounting, it delivers IEEE 802.3 compliant 10/100 Mbps signal conditioning, 1500Vrms high-voltage isolation, and superior EMI shielding for industrial network switches, embedded automation controllers, and IoT communication gateways.
Key Features
- Integrated Magnetics Architecture: 1×1 port 8P8C connector with integrated 10/100Base-TX transformer, 350µH min OCL (with 8mA DC bias), and integrated common mode chokes.
- Standard Through-Hole Form Factor: Right-angle DIP mounting with a 21.35mm overall depth and standard tab-down latch orientation.
- Clean Panel Design: Built without integrated LEDs and without outer EMI tabs (smooth shielded profile) for flush enclosure panel integration.
- Rugged Material System: Flame-retardant PBT housing and insert (UL 94V-0 black), phenolic PBT coil base, phosphor bronze contacts with 6µ” gold plating over 50µ” nickel, and a 30µ” nickel-plated copper alloy shell.
- High Dielectric Isolation: Complies with IEEE 802.3 isolation requirements, tested to 1500Vrms (1mA Max.) Hi-Pot isolation.
- Optimized Insertion & Return Loss: Delivers ≤ 1.0 dB insertion loss (1–100 MHz) and ≤ -20 dB return loss (1–30 MHz) with strong common-mode rejection.
Engineering Specifications & PCB Integration
Designed for through-hole component-side mounting on standard FR-4 circuit boards. The signal footprint utilizes an 8-pin layout on a 1.27mm / 2.54mm grid (8x Ø0.90mm through-holes, 11.43mm span, pins P1–P8) with a 3.05mm solder tail length. Physical PCB retention and grounding are reinforced by dual Ø1.60mm locating holes and dual Ø3.25mm shield grounding posts spaced 15.75mm apart with a ±0.05mm layout tolerance.
