25V 47uF Smd Silver Capacitor

If your board needs a 47uf capacitor, and the old part is a 25V SMD aluminum electrolytic part with a silver casing, this is the part to order. It is a 47uf SMD electrolytic capacitor in a small surface-mount body, built for energy storage, filtering, and voltage smoothing where a through-hole part will not fit. It fits solar inverters, power management circuits, and boards that need a compact 47uF part at up to 25V. It does not fit jobs that need a different capacitance value, a higher voltage than 25V, a through-hole body, or a non-polar capacitor. Check the checks below before you order, so the value, the voltage, the polarity, and the body all match your board.

This is an original, high-quality part.

What it does

A capacitor stores electrical charge and gives it back when the circuit needs it. An aluminum electrolytic capacitor does that job with a high capacitance in a small body, which is why it is used for energy storage and for smoothing voltage on power boards. This 47uf part holds its 47uF value within 20%, so a board that calls for 47uF gets between 37.6 and 56.4uF. The silver colour is the casing, not a different capacitor type — the part inside is an aluminum electrolytic capacitor, and it behaves like one. It is a surface-mount part, so it solders onto pads on the board instead of going through holes.

Repair techs use a part like this as a 47uf capacitor for energy storage, where it holds charge for the next stage, and for filtering, where it smooths out voltage ripples so the circuit sees a steady level. It also fits voltage smoothing in power management circuits, where a steady supply keeps the rest of the board working well.

Key features

• 47uF capacitance, ±20% tolerance
• 25V rated voltage
• SMD (surface-mount) aluminum electrolytic body with a silver casing
• Operating temperature range −40°C to +85°C
• Body about 6 mm across and 4.5 mm high
• Dissipation factor 0.16 max at 120Hz (series reference for 25V)
• RoHS compliant

Checks before you order

• Value: your board list must call for 47uF. A nearby value is not the same part — if your board needs a different value, stop and check the board list again. A 25V 330uF part is a different value for a different job, not a swap for this one.
• Voltage: the voltage across this part must never go above 25V. If your circuit runs at a higher voltage, this part is the wrong pick — a 200V 47uF part is a different job in a radial body, not a swap for this one.
• Polarity: this is a polar capacitor. The negative terminal is marked on the part — match the mark to your board before you solder, and never reverse the polarity. Reversed polarity can damage the capacitor and the board.
• Tolerance: the real value may sit up to 20% away from 47uF, so between 37.6 and 56.4uF. If your circuit needs tighter than 20%, this part is the wrong pick — do not hope the part you get sits near the middle.
• Body and fit: your board must take a surface-mount part, not a through-hole part. Measure the old part and match it against the pads and the space on your board. The live page states about 6 mm across and 4.5 mm high — if your old part is much bigger, check the board list again before you order.
• Fit for the job: this part is made for reflow soldering onto surface-mount pads. Do not use it in a circuit that charges and discharges it again and again at speed — aluminum electrolytic capacitors are not made for that kind of job.

Specifications

All figures below are from the maker series documents for this capacitor family, except the body size and the RoHS line, which are from the live page. No figure here was guessed. The maker of the exact part on this page is not stated on the live page, so the publisher should confirm the series figures against the Download file at publish time (see the gates note).

Other names for the same part (good to know)

Shoppers and repair techs call this same part by a few names. 47uf is the plain name from its value. 47uf 25v capacitor is the name buyers use when both the value and the voltage matter. Smd electrolytic capacitor is the name for its surface-mount construction. 25v 47uf capacitor is the name that carries the voltage first and the value second. Smd capacitor is the short name for its mounting style. If your board list calls for 47uF at 25V in an SMD body, this page is the right match. Do not judge by the silver colour alone — check the value, the voltage, and the body too.

Frequently Asked Questions

What does 47uF mean?

It means 47 microfarads of capacitance. The uF sign stands for microfarad, which is a millionth of a farad, so 47uF is a small amount of charge storage suited to filtering and smoothing on a board.

What does “silver capacitor” mean here?

It means the casing is silver in colour. The part inside is an aluminum electrolytic capacitor — silver is the finish on the outside, not a different capacitor type such as silver-mica or tantalum.

Is this capacitor polar?

Yes. It is a polar aluminum electrolytic capacitor, so it has a positive and a negative terminal. The negative terminal is marked on the part. Never reverse the polarity — fit it the way your board marks it.

Can I use a 47uF capacitor rated for a higher voltage?

Only if the body fits your board and the circuit allows it. A higher-voltage part of the same value can work in place of a lower-voltage one, but it is usually bigger, so check the pads and the space first. Never use a part rated for a lower voltage than your circuit needs.

Can I use a different value, like a nearby microfarad part?

No, not without checking the circuit. The capacitance value sets how much charge the part stores and how well it smooths voltage, so a different value changes how the circuit behaves. Only swap in a different value if the circuit design allows it — otherwise match the board list exactly.

What is the price of this part?

Check the live price on the website. The price shown on the product page is the current one.

Use note kept from the old page: this part was listed before as a 47uF electrolytic capacitor that stores and regulates electrical energy, keeps voltage flow smooth and stable in solar inverters, reduces noise, filters out unwanted signals, and improves the efficiency of the power system, used for energy storage, filtering, and power regulation in solar inverters, power management circuits, and industrial automation, with a compact SMD design for space-saving boards — and that use still stands.