47uf 25V Through Hole 5×11 Electrolytic Capacitor (Pack of 1000)

The 47uf 25V Through Hole 5×11 Electrolytic Capacitor is a polarized aluminum electrolytic capacitor designed for power supply filtering, signal coupling, and energy storage applications in electronic circuits. Professional electronics engineers, circuit designers, and PCB manufacturers rely on these capacitors for stable DC voltage regulation and ripple filtering in power conversion systems. This bulk pack of 1000 units solves the critical problem of maintaining consistent voltage levels while eliminating high-frequency noise in power delivery networks across industrial and consumer electronics applications.

Product Overview

Electrolytic capacitors operate on the principle of dielectric polarization, where an aluminum oxide layer acts as the insulating medium between two conductive plates. The 47uf 25V specification indicates a capacitance value of 47 microfarads with a maximum working voltage of 25 volts DC. This capacitor excels in applications requiring high capacitance in a compact form factor, making it ideal for switching power supplies, audio amplifiers, and voltage regulation circuits where space efficiency is critical. The through-hole 5×11mm package provides robust mechanical stability and excellent solderability on standard PCBs.

What distinguishes this capacitor is its combination of high capacitance density and reliable performance across temperature ranges from -40°C to +85°C. The aluminum electrolytic construction delivers superior ripple current handling capability compared to ceramic alternatives, while the 25V rating provides adequate voltage headroom for most consumer and industrial 12V and 24V supply applications. The bulk pack of 1000 units offers exceptional value for production environments, prototyping facilities, and educational institutions requiring consistent inventory of standard passive components.

Key Specifications

Specification	Details
Product Type	Polarized Aluminum Electrolytic Capacitor
Capacitance Value	47 microfarads (47uf)
Voltage Rating	25V DC
Package Type	Through Hole Radial Lead
Physical Dimensions	5mm diameter x 11mm height
Lead Spacing	2.0mm pitch
Tolerance	±20% at 120Hz, 20°C
Operating Temperature Range	-40°C to +85°C
Ripple Current Rating	Typical 680mA at 100kHz
Equivalent Series Resistance (ESR)	Typical 0.5 ohms at 100kHz
Quantity per Pack	1000 units
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp

Key Features

• High Capacitance Density: 47uf capacity in compact 5×11mm form factor enables space-efficient PCB layouts in power supply modules and audio circuits
• Low Equivalent Series Resistance (ESR): Typical 0.5 ohms at 100kHz ensures minimal voltage ripple and efficient energy transfer in switching power supplies
• Robust Ripple Current Handling: 680mA ripple current rating at 100kHz provides reliable performance in high-frequency switching applications and converter circuits
• Wide Temperature Operating Range: -40°C to +85°C stability ensures consistent performance across industrial, automotive, and consumer electronics environments
• Reliable Through-Hole Design: Standard 2.0mm lead pitch integrates seamlessly with conventional PCB manufacturing processes and automated assembly equipment
• Bulk Pack Economy: 1000-unit quantity provides significant cost savings for production runs, prototyping labs, and component inventory management

Applications and Use Cases

• Power Supply Filtering: Primary filtering stage in AC-DC converter circuits where 47uf capacitance effectively reduces output voltage ripple to acceptable levels for sensitive digital and analog circuits
• Audio Amplifier Decoupling: Coupling capacitor in audio signal paths and power supply decoupling networks where low ESR ensures clean audio reproduction without frequency-dependent impedance artifacts
• Switching Power Supply Smoothing: Output filter capacitor in buck, boost, and flyback converter topologies where high ripple current rating handles switching frequency harmonics up to 100kHz
• Microcontroller Power Supply Stabilization: Secondary bulk capacitor in embedded systems and IoT devices requiring stable 5V or 3.3V rails with minimal transient voltage overshoot
• LED Driver Circuits: Energy storage and ripple suppression in constant-current LED driver applications where 25V rating accommodates series LED string voltages up to 20V
• Industrial Control Systems: Voltage regulation in PLC, VFD, and motor control circuits where 47uf provides sufficient charge storage for momentary load transients

How to Use

Before installation, verify polarity identification on the capacitor body where the negative lead is typically marked with a white or black stripe. Insert the longer positive lead into the designated positive pad on your PCB and the shorter negative lead into the ground or negative rail. Solder both leads using standard reflow or wave soldering processes, ensuring solder joint quality without excessive heat exposure that could degrade the electrolytic medium. For hand soldering, maintain iron temperature below 350°C and limit contact time to 3-5 seconds per lead to prevent thermal damage to the capacitor's internal construction.

In circuit design, always derate the voltage rating to 50-60% of the 25V maximum for optimal lifetime and reliability. For a 12V application, this capacitor provides safe operation with 13V margin. Connect the capacitor as close as possible to the power supply output or load, minimizing lead inductance that could compromise high-frequency filtering effectiveness. In multi-stage filtering networks, combine this 47uf capacitor with smaller ceramic capacitors (0.1uf to 10uf) to achieve superior ripple attenuation across a broader frequency spectrum from DC to several megahertz. Always verify reverse polarity protection in your circuit design to prevent catastrophic capacitor failure if polarity is accidentally reversed during assembly or rework operations.

Frequently Asked Questions

What is the difference between 47uf 25V and 47uf 50V capacitors?

The 25V and 50V ratings indicate the maximum DC voltage these capacitors can safely withstand. The 25V version is suitable for applications with supply voltages up to 12-15V, while 50V versions handle higher voltages up to 35-40V. The 50V capacitor typically has larger physical dimensions and higher cost. For your specific application, select the voltage rating that provides 50-60% safety margin above your circuit's actual operating voltage. Using a 25V capacitor in a 20V application risks premature failure and potential circuit damage.

How do I identify the positive and negative leads on an electrolytic capacitor?

The positive lead is typically longer than the negative lead on new capacitors. Additionally, the capacitor body features a white or black stripe running vertically along one side, which marks the negative terminal. The positive terminal is on the opposite side. Always verify this polarity before soldering, as reverse polarity connection will cause the capacitor to fail within seconds, potentially damaging your circuit. If the leads have been trimmed equally, refer to the body marking or use a multimeter in diode mode to verify polarity.

Can I use a 47uf capacitor in place of a 100uf capacitor in my circuit?

Not directly without circuit analysis. The capacitance value directly affects voltage ripple magnitude and transient response. Substituting 47uf for 100uf will result in approximately 2x higher output voltage ripple, which may exceed your load circuit's tolerance specifications. If your circuit is designed for 100uf, use 100uf or higher. However, you can use higher capacitance values as long as the voltage rating remains adequate. Always verify ripple voltage specifications and transient response requirements before making substitutions.

What is ESR and why does it matter in capacitor selection?

Equivalent Series Resistance (ESR) represents the internal resistance of the capacitor, typically 0.5 ohms at 100kHz for this model. Low ESR is critical in power supply applications because it directly determines voltage ripple: Ripple Voltage = Ripple Current × ESR. A capacitor with 0.5 ohm ESR carrying 680mA ripple current produces only 0.34V ripple, while a high-ESR capacitor would generate significantly more noise. In switching power supplies and audio circuits, low ESR ensures clean voltage regulation and minimal noise injection into sensitive analog circuits.

What temperature range should I consider for my application?

This capacitor operates reliably from -40°C to +85°C, making it suitable for most consumer, industrial, and automotive applications. However, capacitor lifetime decreases exponentially with temperature. At 85°C, expected lifetime is significantly shorter than at 25°C. For applications in hot environments like automotive under-hood installations or industrial furnace controls, consider derating the voltage rating further or selecting capacitors with higher temperature ratings. Always check your circuit's worst-case temperature scenario and verify the capacitor can maintain performance throughout that range.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
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• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing

Buy 47uf 25V Through Hole 5×11 Electrolytic Capacitor (Pack of 1000) Online in India

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