Low ESR Polymer Aluminum Capacitor for High-Frequency Power Circuits – TS13EY Series

TL;DR: The TS13EY polymer solid aluminum capacitor provides ultra-low ESR, high ripple current capability, and stable high-frequency performance for DC-DC converters, VRM modules, and switching power supplies.

What Is a Polymer Aluminum Capacitor?

A polymer aluminum electrolytic capacitor uses conductive polymer as the electrolyte to achieve significantly lower ESR, higher ripple current handling, and improved high-frequency performance compared with liquid electrolytic capacitors.

TS13EY Series Overview

The TS13EY low ESR polymer aluminum capacitor is designed for modern high-frequency power electronics requiring efficient filtering and fast transient response. It supports compact PCB layouts while maintaining thermal stability and long operational life.

Key Electrical Characteristics

  • Ultra-low ESR for high-frequency switching circuits
  • High ripple current capability
  • Stable capacitance over temperature and frequency
  • Improved transient response for DC-DC converters
  • Long operational life compared with liquid electrolytic types

Performance Advantages in Switching Power Supplies

In high-frequency DC-DC converters and VRM applications, low ESR directly reduces output ripple and power loss. The TS13EY polymer capacitor improves efficiency and voltage stability under dynamic load conditions.

Typical Applications

  • DC-DC converters and VRM modules
  • Switching power supplies (SMPS)
  • Motherboards and computing systems
  • Industrial power control circuits
  • Telecommunications power modules

Polymer vs Liquid Aluminum Electrolytic Capacitors

Parameter Polymer Aluminum Liquid Electrolytic
ESR Ultra-low Higher
Ripple Current Higher Moderate
High-Frequency Performance Excellent Limited
Operational Life Longer Shorter

Selection Considerations for High-Frequency Power Design

When selecting a low ESR polymer capacitor for switching power supplies, engineers should evaluate ESR value, ripple current rating, frequency response, and thermal performance to ensure optimal efficiency and reliability.

Download TS13EY Datasheet

Access full electrical specifications and application guidance:



TS13EY Polymer Aluminum Capacitor Datasheet

Request Samples and RFQ

Looking for a low ESR polymer capacitor for DC-DC converter or SMPS design? Contact our engineering team for samples, technical support, and quotation.