MPET 4.7uF 400V
Metallized polyester film capacitor, 4.7µF 400V, compact size. Suitable for filtering, coupling, and bypass applicati...
Product Overview
Description
The Samwha MPET series metallized polyester capacitors provide cost-effective solutions for general-purpose filtering, coupling, and bypass applications. With 4.7µF capacitance and 400V rating, this capacitor is suitable for switch-mode power supplies, lighting ballasts, and motor control circuits.
The polyester dielectric offers good volumetric efficiency and stable characteristics across the operating temperature range. The metallized construction provides self-healing properties for enhanced reliability compared to foil capacitors.
The compact dipped package is suitable for high-density PCB layouts and automated assembly processes. The radial lead configuration allows easy through-hole mounting.
Product Series
MPET
Primary Application
SMPS input/output filtering
Key Features
- Metallized polyester for cost-effective performance
- Self-healing properties
- Compact dipped package
- High volumetric efficiency
- Radial leads for easy mounting
- 15+ year expected lifetime
Specifications
| Capacitance | 4.7µF ±10% |
|---|---|
| Voltage Rating | 400V DC |
| AC Voltage | 200V AC |
| Temperature Range | -40°C to +105°C |
| Dissipation Factor | <0.008 at 1kHz |
| Insulation Resistance | >30,000MΩ at 20°C |
| Ripple Current | 2A RMS at 100kHz, 105°C |
| Size | 18mm diameter x 35mm height |
Applications
SMPS input/output filtering
Power conversion and supply
Lighting ballasts
Electronic system design
Motor run capacitors
Motor drive and control systems
Coupling and bypass circuits
Electronic system design
EMI suppression
Electronic system design
FAE Expert Insights
"The MPET series is my go-to for cost-sensitive filtering applications. The 4.7µF 400V is perfect for PFC output filtering in LED drivers and small power supplies. While polyester has slightly higher losses than polypropylene, it's perfectly adequate for applications below 50kHz and much more cost-effective. I've used these extensively in LED lighting projects where they provide reliable filtering at a competitive price point. The self-healing property is valuable - these capacitors just keep working year after year without issues. The compact size (18mm x 35mm) fits well in space-constrained designs. For thermal design, these capacitors are quite forgiving - they work reliably even at 80-90°C ambient. If you're designing consumer electronics, lighting, or general-purpose power supplies where cost matters, the MPET series offers excellent value. I recommend them over electrolytics for any AC filtering or coupling application."
Cost-effective film capacitor for general-purpose filtering applications
— Lisa Wang, BeiLuo
Frequently Asked Questions
What is the difference between MPET (polyester) and MPP (polypropylene) capacitors?
MPET (polyester) and MPP (polypropylene) capacitors have different characteristics: Polyester (MPET) - Higher dielectric constant provides better volumetric efficiency (smaller size for same capacitance), Higher dissipation factor (0.5-1% vs 0.01-0.1% for polypropylene), Lower cost, Good for general-purpose filtering below 50kHz, Temperature coefficient +200 to +600 ppm/°C. Polypropylene (MPP) - Lower dielectric losses (dissipation factor <0.1%), Better frequency response (usable to several hundred kHz), Higher insulation resistance, More stable capacitance over temperature, Temperature coefficient -200 ppm/°C (negative). Selection guide: Use MPET for cost-sensitive applications below 50kHz where size matters, Use MPP for high-frequency, high-current, or precision applications. For LED drivers and consumer power supplies, MPET offers the best value. For motor drives and inverters, MPP is preferred for low losses.
Use MPET for cost-sensitive low-frequency filtering. Use MPP for high-frequency or high-current applications.
What is the typical application for MPET 4.7µF 400V capacitor?
The MPET 4.7µF 400V capacitor is commonly used in: PFC Output Filtering - Power factor correction circuits in LED drivers and power supplies. The 400V rating is suitable for 380-400V DC PFC output. SMPS Filtering - Input and output filtering in switch-mode power supplies up to 200W. The 4.7µF provides good ripple attenuation. Motor Run Capacitors - Small single-phase motor starting and running applications. The self-healing property improves reliability. Lighting Ballasts - Fluorescent and HID ballast applications where non-polar capacitors are required. Coupling Circuits - AC coupling in industrial control circuits. The 400V rating allows use in 230V AC applications with safety margin. EMI Suppression - X-capacitor applications for noise filtering. The compact size (18mm x 35mm) makes it suitable for space-constrained designs. The cost-effective polyester construction provides good performance for these general-purpose applications.
MPET 4.7µF 400V is ideal for PFC filtering, SMPS, and lighting applications up to 200W.
What is the lead time for MPET 4.7uF 400V?
Standard lead time for MPET 4.7uF 400V is 6-8 weeks. For high-volume orders, we offer scheduled deliveries to reduce lead time. Contact our sales team for current lead times and inventory availability.
Contact sales for current lead times and scheduled delivery options.
Does MPET 4.7uF 400V have any special packaging options?
MPET 4.7uF 400V is available in standard packaging. For high-volume production, we offer tape and reel packaging for automated assembly. Contact our sales team for custom packaging requirements. For more detailed information and application-specific recommendations, please contact our FAE team. We can provide detailed technical documentation, Spice models, and application support to ensure optimal capacitor selection for your specific requirements.
Contact sales for tape and reel or custom packaging options.
What certifications does MPET 4.7uF 400V have?
MPET 4.7uF 400V is RoHS compliant and lead-free. For automotive applications, we offer AEC-Q200 qualified versions. Contact our quality team for specific certification requirements. For more detailed information and application-specific recommendations, please contact our FAE team. We can provide detailed technical documentation, Spice models, and application support to ensure optimal capacitor selection for your specific requirements.
Contact quality team for certification documentation.