The **RM-07-T-R** typically refers to a high-precision, surface-mount (SMD) thick film chip resistor, often following the naming conventions used by manufacturers like **ASJ** or **Rohm**. Below is the detailed breakdown of its electronic specifications and characteristics. --- ### 1. Specification Overview The part number is alphanumeric, where each segment represents a specific physical or electrical property. | Parameter | Specification | Description | | :--- | :--- | :--- | | **Type** | Thick Film Chip Resistor | Reliable technology for general-purpose circuitry. | | **Size Code (07)** | 0805 (Imperial) | Dimensions: approx. 2.0mm x 1.25mm. | | **Resistance Value** | Variable | Typically defined by the middle digits in a full SKU. | | **Tolerance (T)** | ±1% (F) or ±5% (J) | "T" often signifies the packaging/temperature coefficient. | | **Packaging (R)** | Tape & Reel | Supplied on a 7-inch reel for automated SMT assembly. | --- ### 2. Key Physical Characteristics * **Dimensions:** For the "07" (0805) size: * Length: 2.00 ± 0.10 mm * Width: 1.25 ± 0.10 mm * Height: 0.50 ± 0.10 mm * **Termination:** Lead-free (Sn) finish on a nickel barrier layer to prevent "leaching" during soldering. * **Substrate:** High-purity Alumina (Al2O3) ceramic. --- ### 3. Electrical Performance Thick film resistors of this series generally adhere to the following standards: 1. **Power Rating:** Usually **0.125W (1/8W)** at 70°C. 2. **Maximum Working Voltage:** Typically **150V**. 3. **Temperature Coefficient (TCR):** Usually **±100 ppm/°C** to **±400 ppm/°C**, depending on the specific resistance value. 4. **Operating Temperature Range:** -55°C to +155°C. --- ### 4. Typical Applications The RM series is highly versatile and found in: * **Consumer Electronics:** Smartphones, tablets, and laptops. * **Industrial Controls:** Power supplies and sensor interfaces. * **Automotive:** Non-safety critical interior electronics (unless AEC-Q200 qualified). --- ### 5. Part Number Decoding Example If the full code were `RM-07-1002-F-T-R`: ```text RM -> Series (Thick Film) 07 -> Size (0805) 1002 -> Resistance (10k Ohms) F -> Tolerance (±1%) T -> Temperature Coefficient / Special Code R -> Taping / Reel ```