The term **N10-R** typically refers to a specific naming convention used for electronic components, most commonly associated with **Surface Mount Device (SMD) Resistors** or specific **Power NTC Thermistors**. The interpretation depends on whether the code is a **marking on a part** or a **manufacturer part number**. --- ### 1. N10-R as an SMD Resistor In the context of SMD resistors, "R" often acts as a decimal point. However, the prefix "N" usually denotes a specific series or tolerance rating (often related to military or high-stability standards). | Feature | Description | | :--- | :--- | | **Value** | Typically 10 Ohms (if R is the multiplier) | | **Package** | Usually found in 0603, 0805, or 1206 SMD sizes | | **Application** | Current limiting, pull-up/down resistors | ### 2. N10-R as an NTC Thermistor Many manufacturers (like TDK or Epcos) use "N10" as part of a series code for **Negative Temperature Coefficient (NTC)** thermistors. These are resistors whose resistance decreases as temperature increases. #### Key Specifications: * **Resistance at 25°C:** Usually indicated by the number following the N series (e.g., 10 Ohms). * **Purpose:** Inrush current limiting in power supplies. * **Physical Form:** Often a black or green ceramic disc with two radial leads. ### 3. Technical Identification Table If you are looking at a datasheet, here is how the "N10-R" designation usually breaks down: | Component Type | Meaning of "N" | Meaning of "10" | Meaning of "-R" | | :--- | :--- | :--- | :--- | | **Resistor** | Tolerance/Series Code | Base resistance value | Decimal point or RoHS Compliant | | **Thermistor** | NTC Type | Resistance at 25°C | Taped/Reeled packaging | | **Connector** | Series identifier | Number of pins/circuits | Right-angle orientation | --- ### How to Verify the Part To identify your specific part accurately, check the following: 1. **The Logo:** Is there a manufacturer mark (like a 'W' for Vishay or an 'L' for Littelfuse)? 2. **The Color:** * **Black/Green Disc:** It is a Thermistor. * **Flat Black/Blue Rectangle:** It is an SMD Resistor. 3. **Circuit Label:** Look at the PCB silkscreen. * `R10` = Resistor * `RT1` or `TH1` = Thermistor * `J1` or `CN1` = Connector