It appears you are referring to **MJS**, which most commonly refers to the **MJS Series** of subminiature fuses manufactured by companies like **Bel Fuse Inc.** or specific connector/mounting series in electronics. Below is an overview of the most common electronic parts associated with the MJS designation. --- ## 1. MJS Subminiature Fuses (Bel Fuse) The most widespread use of "MJS" in electronics is the **MJS Series subminiature glass tube fuses**. These are used to protect circuits from overcurrent conditions. ### Key Specifications | Feature | Description | | :--- | :--- | | **Type** | Subminiature Glass Body Fuse | | **Size** | Typically 5x15mm (Slightly smaller than standard 5x20mm) | | **Response Time** | Time-Lag (Slow Blow) | | **Current Rating** | Ranges from 100mA to 7A | | **Voltage Rating** | Typically 125V to 250V AC | ### Common Applications * **Power Supplies:** Protecting input stages from surges. * **Consumer Electronics:** Used in chargers, monitors, and set-top boxes. * **Industrial Boards:** Where space is limited but a glass-body fuse is preferred for visibility. --- ## 2. ITT Cannon MJS (Micro-D Connectors) In high-reliability interconnects, **MJS** refers to a specific series of **Micro-D connectors** (Micro-Junction Shell). These are high-density connectors used in aerospace and defense. ### Characteristics * **Pin Spacing:** 0.050 inch (1.27 mm) centers. * **Durability:** Designed for high vibration and extreme temperatures. * **Hardware:** Often utilizes **Jackposts** or **Jackscrews** for secure mechanical locking. --- ## 3. Comparison of MJS Fuse vs. Standard Fuse If you are specifically looking at the MJS fuse for a repair or design, here is how it compares to standard types: | Metric | MJS Fuse | Standard (GMA/AGC) | | :--- | :--- | :--- | | **Form Factor** | Subminiature (5x15mm) | Standard (5x20mm or 6x32mm) | | **Blow Characteristic** | Slow-Blow (Time-Delay) | Fast or Slow-Blow | | **Mounting** | Clip or Pigtail Lead | Fuse Holder or Clip | --- ## Technical Code Example When identifying these parts in a Bill of Materials (BOM), you might see syntax like this: ```yaml component: type: "Fuse" series: "MJS" manufacturer: "Bel Fuse" part_number: "MJS 1.5-R" attributes: current: "1.5A" voltage: "250V" material: "Glass" rohs: "Compliant" ``` ---