## Overview of the DF1B-R28A The **DF1B-R28A** is a specialized hand tool manufactured by **Hirose Electric**. It is designed specifically for the termination of discrete wires into insulation displacement (IDC) connectors within the **DF1B Series**. Unlike standard crimp tools that use pressure to deform a terminal around a wire, this tool is an **IDC Termination Tool** used to press wires into the "U" slots of the connector contacts. --- ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Manufacturer** | Hirose Electric (HRS) | | **Part Number** | DF1B-R28A (CL No. 550-0223-2) | | **Compatible Series** | DF1B Series (IDC Type) | | **Wire Gauge (AWG)** | 28 AWG | | **Insulation Diameter** | φ0.9 to φ1.2 mm | | **Tool Type** | Manual Hand Tool (Pistol Type) | --- ### Key Electronic & Mechanical Features 1. **IDC Mechanism**: The tool is engineered to push the wire into the IDC terminal. The terminal's blades pierce the wire insulation to establish an electrical connection with the conductor without the need for stripping the wire. 2. **Precision Alignment**: The "R28A" variant is calibrated specifically for **28 AWG** wires. Using a different wire gauge can lead to poor electrical conductivity or physical damage to the connector housing. 3. **Ratchet Control**: It features a built-in ratchet mechanism that ensures the tool completes a full cycle before releasing. This guarantees that the wire is fully seated to the required depth for a reliable gas-tight connection. 4. **Replaceable Parts**: The tool consists of a main body (handle) and a specific **Applicator/Guide** head. The heads can often be swapped if different wire gauges within the DF1B series are required. --- ### Compatibility Chart The DF1B-R28A is used with specific Hirose connector components: | Component Type | Part Number Example | | :--- | :--- | | **IDC Socket (Single Row)** | DF1B-2S-2.5R | | **IDC Socket (Double Row)** | DF1B-10DS-2.5R | | **Compatible Wire** | UL1061 or UL1007 (28 AWG) | --- ### Usage Precautions * **Do Not Strip**: IDC tools are designed for unstripped wire. Stripping the wire before using the DF1B-R28A will result in a loose connection. * **Alignment**: Ensure the connector is placed firmly in the guide before pulling the trigger to avoid crushing the plastic housing. * **Maintenance**: Regularly check the "punch" tip for wear or debris buildup, which can affect the depth of the wire insertion. ---