## Overview of the DF1B-R28 The **DF1B-R28** is a specific hand tool component, more accurately described as a **Crimp Contact Extraction Tool** manufactured by **Hirose Electric Co Ltd**. It is designed specifically for the DF1B series of connectors. --- ### Technical Specifications | Feature | Details | | :--- | :--- | | **Manufacturer** | Hirose Electric Co Ltd (HRS) | | **Part Number** | DF1B-R28 | | **Tool Type** | Extraction Tool (Contact Removal) | | **Compatible Series** | DF1B Series Connectors | | **Connector Pitch** | 2.5mm | | **Application** | Removing crimp terminals from housing | --- ### Key Components & Functionality The DF1B-R28 is not an electronic "part" in terms of circuitry (like a resistor), but rather a precision mechanical tool for electronic assembly. Its main functions include: 1. **Housing Release:** It is designed to depress the plastic lance (locking tab) inside the DF1B connector housing. 2. **Terminal Removal:** It allows for the safe extraction of crimped wires from the connector shell without damaging the metal terminal or the plastic housing. 3. **Repair & Prototyping:** Essential for correcting wiring errors or replacing damaged contacts in wire-to-board or wire-to-wire configurations. --- ### The DF1B Connector System To understand why the DF1B-R28 is used, it is helpful to look at the connector system it supports: * **Pitch:** 2.5mm spacing between pins. * **Mounting:** Discrete wire crimping. * **Versatility:** Available in single and double-row configurations. * **Current Rating:** Typically up to 3A depending on wire gauge (AWG 20-30). --- ### Usage Instructions To use the DF1B-R28 tool: * **Step 1:** Insert the thin metal tip of the tool into the terminal cavity from the mating side of the connector. * **Step 2:** Gently push down the lance that holds the terminal in place. * **Step 3:** Pull the wire from the back side of the connector to remove the terminal.