The part number **006-R** is most commonly associated with **Littelfuse** (specifically within their Wickmann or TR5 sub-series). It refers to a specific type of **Subminiature Radial Lead Fuse**. --- ## Technical Specifications (006-R) These fuses are designed for space-constrained PCB applications where traditional glass tube fuses are too large. | Parameter | Specification | | :--- | :--- | | **Current Rating** | 6.3 Amps (The "006" signifies 6.3A in the TR5 coding system) | | **Voltage Rating** | Typically 250V AC | | **Fuse Type** | Time-Lag (Slow Blow) / T-Type | | **Mounting Type** | Through-hole (Radial Leads) | | **Body Material** | Thermoplastic (UL 94-V0 rated) | | **Standard** | IEC 60127-3 | --- ### Key Features 1. **Small Form Factor:** The "cylindrical" or "teardrop" shape allows for high-density placement on printed circuit boards. 2. **Time-Delay Characteristic:** Being a "Slow Blow" fuse, it can withstand brief surges (like inrush current from a motor or power supply) without blowing immediately. 3. **Direct Solder or Plug-in:** They can be soldered directly to the PCB or inserted into specialized fuse holders for easy replacement. 4. **Vibration Resistance:** Due to their small mass and radial lead design, they are more resistant to mechanical shock and vibration than standard 5x20mm glass fuses. --- ### Common Applications * **Power Supplies:** Protecting the input stage of AC/DC adapters. * **Consumer Electronics:** Televisions, chargers, and audio equipment. * **Industrial Controllers:** Protecting sensitive logic boards from overcurrent events. * **LED Lighting:** Drivers and ballasts. --- ### How to Identify It If you are looking at the physical part, you will usually see: * A small round plastic cap (often reddish-brown or black). * The markings **T6.3A** (indicating Time-lag, 6.3 Amps). * Two long metal pins protruding from the bottom.