The part number **RTZ-25V102MJHT-R5** refers to a high-performance **Aluminum Electrolytic Capacitor**. This specific component is manufactured by **ELNA** (or follows their standard nomenclature), belonging to the **RTZ series**, which is known for its low impedance and high reliability. --- ## 1. Part Number Breakdown Understanding the alphanumeric code helps identify the specific technical characteristics of the component: | Code Segment | Meaning | Technical Value | | :--- | :--- | :--- | | **RTZ** | Series Name | Low Impedance, High Ripple Current | | **25V** | Voltage Rating | 25 Volts (DC) | | **102** | Capacitance Code | 1000 µF (10 followed by 2 zeros) | | **M** | Tolerance | ±20% | | **JHT** | Case Size/Type | Specific physical dimensions (approx. 10x12.5mm or 10x16mm) | | **R5** | Packaging/Lead Style | Lead forming or Taping specification | --- ## 2. Key Technical Specifications Based on the **RTZ Series** datasheet, here are the primary electrical and physical characteristics: ### Electrical Profile * **Capacitance:** 1000 µF (Microfarads). * **Rated Voltage:** 25V DC. * **Operating Temperature:** -40°C to +105°C (Standard industrial high-temp range). * **Endurance:** Typically 2,000 to 5,000 hours at 105°C (depending on specific case size). * **Impedance:** Very low ESR (Equivalent Series Resistance), designed for high-frequency filtering. ### Physical Profile * **Type:** Radial Lead (Through-hole). * **Electrolyte:** Liquid electrolyte inside an aluminum can with a safety vent. --- ## 3. Applications and Usage This part is specifically engineered for power management circuits where stability and heat resistance are critical. * **Switching Power Supplies (SMPS):** Used for smoothing output voltage and reducing ripple noise. * **DC-DC Converters:** Acts as an energy reservoir to maintain steady voltage levels. * **Motherboards & Peripherals:** Used in high-speed digital circuits to filter power rails. * **LED Drivers:** Provides stability in lighting control circuits. --- ## 4. Design Considerations When replacing or designing with this part, keep the following in mind: 1. **Polarity:** This is a polarized component. Installing it backwards will lead to catastrophic failure (explosion/venting). 2. **Voltage Derating:** It is best practice to run the capacitor at 80% or less of its rated voltage (e.g., using this 25V cap on a 12V or 16V rail) to extend its lifespan. 3. **Heat:** While rated for 105°C, every 10°C drop in operating temperature approximately doubles the capacitor's life.