The **CJP00-1003JB** is a specific electronic component, typically categorized as a **high-precision NTC (Negative Temperature Coefficient) thermistor** or a specialized resistor network, often manufactured by brands like **TDK** or **Murata** (though part numbering can vary by distributor). Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications The part number follows a specific nomenclature used in surface-mount device (SMD) manufacturing. | Parameter | Value / Description | | :--- | :--- | | **Component Type** | NTC Thermistor / Precision Resistor | | **Resistance Value** | 10k $\Omega$ (indicated by "1003") | | **Tolerance** | $\pm$ 5% (indicated by "J") | | **Package Size** | 0402 or 0603 (Standard Metric/Imperial) | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ### 2. Part Number Breakdown Understanding the alphanumeric code helps identify the electrical properties: * **CJP:** Product series code (often denoting high-stability ceramic or automotive-grade components). * **00:** Designates the size/physical dimensions or a specific voltage rating. * **1003:** Represents the **Resistance Value**. * The first three digits (100) are the significant figures. * The fourth digit (3) is the multiplier (number of zeros). * *Result:* $100 \times 10^3 = 100,000 \Omega$ or **100k $\Omega$** (Note: Depending on the specific datasheet, 1003 can also map to 10k $\Omega$ if using 3-digit logic, but standard 4-digit logic is 100k). * **J:** Represents the **Tolerance**. * J = $\pm 5\%$. * **B:** Represents the **Packaging/Form Factor** (Bulk or Taping). --- ### 3. Electrical Functions The CJP00-1003JB is primarily used for the following circuit functions: 1. **Temperature Compensation:** Used in LCDs or crystal oscillators to stabilize performance as heat rises. 2. **Inrush Current Limiting:** Protecting sensitive components from power spikes. 3. **Temperature Sensing:** Acting as a sensor for battery packs (Li-ion) to prevent overheating during charging. --- ### 4. Implementation Example In a typical voltage divider circuit for temperature sensing, the CJP00-1003JB would be used as follows: ```cpp // Pseudocode for reading the CJP00-1003JB via Microcontroller float V_in = 5.0; float R_fixed = 10000.0; // Fixed resistor int adc_value = analogRead(A0); float V_out = adc_value * (5.0 / 1023.0); // Calculate Resistance of Thermistor float R_thermistor = R_fixed * (V_out / (V_in - V_out)); ``` ---