In modern power electronics, designers demand capacitors that deliver reliability, low loss, and thermal stability. Applications such as SMPS, LED drivers, high-frequency inverters, snubber circuits, timing modules, and industrial filters increasingly rely on metallized polypropylene film capacitors, especially axial types known for their high-voltage endurance and dielectric reliability.
The TS04S Double-Sided Metallized Polypropylene Film Circular Axial Capacitor is built for these requirements. Its double-sided metallization, circular winding, axial leads, and broad voltage/dimension range provide long-life stability and strong cross-brand compatibility for OEMs and distributors.
This article summarizes the TS04S’s construction, performance advantages, application suitability, and procurement benefits, focusing on practical engineering and sourcing efficiency.
1. Technical Foundations: What Makes a Metallized Polypropylene Film Capacitor Superior?
Polypropylene film is widely recognized for its excellent electrical characteristics:
• Extremely low dielectric loss (low tanδ)
• High insulation resistance
• Stable dielectric properties across wide temperature ranges
• Excellent self-healing capability
• Strong suitability for high-frequency circuits
• Intrinsically low ESR and low ESL due to their construction
When a capacitor utilizes double-sided metallization, these benefits increase further. Both sides of the film layer receive a thin metallic coating (typically aluminum or zinc–aluminum alloy), improving:
• Current distribution
• Breakdown path redundancy
• Long-term reliability
• Resistance to partial discharge
• Stability under repetitive pulses
The TS04S leverages these strengths by combining metallized polypropylene film with a circular axial construction optimized for demanding electrical conditions.
2. The TS04S Structure: Double-Sided Metallization in a Circular Axial Design
The TS04S uses a circular winding structure, allowing compact dimensions and efficient mechanical support while maintaining uniform electrical characteristics across layers. The axial lead configuration provides:
• Low inductance, due to direct lead-to-foil path
• Stable mounting in through-hole designs
• Better thermal dissipation compared with many radial structures
Key structural advantages of the TS04S:
| Feature | Benefit |
|---|---|
| Double-sided PP metallization | Lower loss, better conduction, and longer lifespan |
| Axial lead layout | Reduced ESL; ideal for pulse and high-frequency circuits |
| Circular winding | Mechanical stability and uniform electric field distribution |
| Self-healing dielectric | Prevents catastrophic failure in high-voltage spikes |
| High-quality encapsulation | Improves moisture resistance and environmental durability |
These features position the TS04S as a high-stability metallized capacitor well suited for power electronics and precision analog systems.
→ Request TS04S Technical Datasheet
3. Low-Loss Performance: Essential for SMPS, LED, and Inverter Designs
Power conversion systems—especially modern high-efficiency SMPS and LED drivers—require capacitors that maintain low losses even under rapid switching environments. Metallized polypropylene capacitors are inherently low-loss, but the TS04S offers enhanced performance due to:
• Low dissipation factor (low tanδ) under operating conditions
• High dv/dt endurance for pulse and snubber circuits
• Reduced heat buildup during continuous operation
• Stable capacitance under high AC ripple currents
This improves long-term system efficiency and extends power supply lifetimes.
Why low-loss behavior matters for OEM design:
• Prevents heat-induced drift in capacitance values
• Enables miniature system design due to improved thermal stability
• Supports high switching frequencies common in modern power electronics
• Improves MTBF and reduces field failure rates
4. High-Voltage Support and Wide Dimension Options
The TS04S line includes multiple voltage specifications commonly required in industrial and commercial designs. The use of high-quality polypropylene film ensures strong dielectric endurance across the entire voltage range.
High-voltage PP film performance includes:
• Stable operation at 630 V to 2000 V
• Excellent resistance to voltage surges
• Suitability for both AC and DC applications
• High dielectric strength with predictable long-term behavior
In addition, the wide dimensional availability allows engineers to select the optimal fit for mechanical layout constraints while maintaining identical electrical performance.
This flexibility improves both the engineering and procurement experience.
5. Cross-Brand Replacement Mapping & Inventory Optimization
One of the most important purchasing-intent benefits of the TS04S is its compatibility with many global film capacitor formats.
Cross-brand replacement advantages:
• Allows drop-in replacement for well-known axial film capacitor series
• Simplifies procurement during supply-chain constraints
• Reduces the need to stock multiple similar parts
• Helps distributors cut inventory size while maintaining broad coverage
For distributors managing hundreds of SKU variations, the TS04S helps reduce stocking pressure by offering:
• Multi-voltage coverage within one platform
• Standardized axial form factors
• Flexible mapping between dimension and capacitance values
• Universal applicability across SMPS, LED, and inverter sectors
This results in a warehouse-friendly, low-SKU management system that improves turnover and lowers total inventory cost.
6. Application Fields: Where the TS04S Performs Best
The double-sided metallized polypropylene TS04S capacitor is designed for environments requiring:
• Electrical stability
• Long lifespan
• Low loss at high frequencies
• High-voltage handling
• Reliable self-healing performance
Primary Applications:
1. SMPS (Switched-Mode Power Supplies)
Used in snubber circuits, energy transfer stages, and output filtering.
2. LED Power Drivers
Supports low-loss, high-frequency operation with excellent thermal stability.
3. Inverter and Motor Control Systems
Endures repetitive high-voltage pulses and elevated temperatures.
4. Precision Analog and Timing Circuits
Delivers stable capacitance with minimal temperature drift.
5. Industrial Filtering and EMI Suppression
Low ESR and high insulation resistance enhance filtering performance.
These versatile roles position the TS04S as a dependable choice for engineers designing next-generation power and control systems.
7. Reliability and Self-Healing: Extending Long-Term Equipment Lifespan
The metallized polypropylene film construction of the TS04S includes a natural self-healing mechanism. When a localized dielectric breakdown occurs, the metallization around the fault vaporizes, isolating the defect and restoring capacitor integrity.
Benefits of this self-healing behavior:
• Avoidance of short circuits
• Improved reliability under surge and pulse stress
• Consistent operation across long service cycles
• Reduced field failures in industrial applications
The TS04S is manufactured under strict process control to ensure the metallization thickness, winding tension, and encapsulation quality all contribute to superior long-term reliability.
For purchasing teams, the TS04S offers advantages beyond electrical performance:
B2B purchasing benefits for TS04S:
• Compatible with multiple major capacitor models
• Long-term stable supply chain
• Supports high-volume and OEM-specific variations
• Reduces SKU count through wide voltage & capacitance coverage
• Fits universal axial-box structures in legacy and new designs
• Lowers total inventory cost for distributors
These factors make the TS04S a high-value component for inventory planning, cross-brand replacement programs, and long-life product series.
Conclusion: A Capacitor Engineered for Modern Power Electronics
The TS04S Double-Sided Metallized Polypropylene Film Circular Axial Capacitor is purpose-built for engineers and procurement teams seeking a stable, low-loss, and universally compatible film capacitor solution. With high-voltage capability, excellent dielectric performance, wide dimensional availability, and strong cross-brand replacement potential, the TS04S is well suited for SMPS, LED systems, inverter circuits, filtering, and industrial-grade electronic applications.
Its construction quality and reliability metrics make it a trusted capacitor for long-lifecycle equipment and demanding power conversion environments.
Recommended Video: Inside the TS04S
Engineering & Procurement Contact
Access full technical files and get engineering support directly from Suntan for your next high-voltage, low-loss axial film capacitor design.
Always refer to the official Suntan datasheets for detailed ratings, safety notes, and design limits.