390µF 6.3V Solid Aluminum Capacitor

INTRODUCTION

Product Parameter

Technical Specifications

390µF 6.3V product parameters

Parameter	Reference Value
Capacitance	390µF nominal
Rated Voltage	6.3V DC
Operating Temperature	-40°C to +85°C / +105°C options
Dimensions	Ø5 × 9mm; alternative case sizes subject to engineering review
Endurance	2,000–8,000 hours by selected series and operating conditions
Application Fields	low-voltage processor, converter and point-of-load filtering; industrial electronics, power supplies and control boards
Customization Support	Capacitance, voltage, temperature class, case size, endurance target, application matching, marking, customer brand and packaging

Product Information

Designed for compact power-density decisions

Electrical fit

Review ripple current, ESR or impedance, leakage, surge exposure and circuit frequency—not capacitance and voltage alone.

Thermal fit

Estimate self-heating and ambient temperature at the installed position because operating stress directly affects service life.

Mechanical fit

Confirm diameter, height, lead or terminal layout, polarity marking, board clearance and assembly method.

Why Solid Aluminum Matters

A practical format for compact, ripple-sensitive power rails

Solid aluminum electrolytic construction is commonly considered when designers need stable filtering behavior in a compact envelope. For this 390µF 6.3V item, the nominal rating and Ø5 × 9mm case provide the first selection layer; final approval should also cover actual impedance behavior, ripple heating, surge conditions and the required qualification plan.

The result is a clearer RFQ: engineering defines the operating limits, sourcing confirms the physical and commercial requirements, and both teams review one controlled product specification.

Best Fit for Buyers

Where this 390µF 6.3V option can enter a shortlist

OEM and EMS programs

Use for low-voltage processor, converter and point-of-load filtering when board space, repeatability, sample approval and traceable production requirements must be aligned.

Distributors and importers

Build a cross-reference around nominal value, case size, temperature class, life target, packing format and customer-specific marking.

Selection Workflow

Six checks from RFQ to repeat order

1. Circuit conditions

Working voltage, surge, waveform, frequency and duty cycle.

2. Electrical limits

Capacitance tolerance, ripple current, ESR/impedance and leakage targets.

3. Thermal profile

Ambient temperature, cooling, expected rise and service-life target.

4. Mechanical envelope

Ø5 × 9mm case, board clearance, polarity and assembly constraints.

5. Sample validation

Confirm the selected series through samples and the agreed test plan.

6. Production control

Lock marking, packing, inspection and repeat-order references.

Quality & Documentation

Evidence that supports qualification

Production checkpoints

Material control, assembly, aging/screening, electrical inspection, appearance, polarity marking and packing verification can be aligned to the selected product and order.

Documents to request

Current datasheet, outline drawing, inspection information, packing reference and applicable compliance documentation should be requested for the selected series.

RFQ Checklist

Send the engineering and commercial requirements together

Information to provide	Why it matters
Application and circuit position	Defines filtering, buffering and transient conditions.
Working voltage, surge and ripple	Supports electrical and thermal stress review.
Temperature and life target	Supports endurance and derating review.
Case size and board constraints	Confirms physical fit and assembly compatibility.
Samples, quantity and packing	Aligns validation, production and delivery planning.

FAQ