Polyester Capacitor: The Complete 2026 Market & Sourcing Guide

1. Introduction to Polyester Capacitors

Polyester capacitors, also known as Mylar capacitors, are a type of film capacitor that uses a polyester film (typically polyethylene terephthalate, PET) as the dielectric material. They are widely used in electronic circuits for applications such as bypassing, coupling, decoupling, and filtering. Key characteristics include excellent stability, low leakage current, high insulation resistance, and a wide operating temperature range. These capacitors are non-polarized, making them suitable for AC and DC circuits. Their cost-effectiveness and reliability have made them a staple in consumer electronics, industrial controls, and automotive systems.

2. Global Top 10 Polyester Capacitor Suppliers & Factories

The global market for polyester capacitors is dominated by established manufacturers with strong R&D capabilities and extensive distribution networks. Based on 2025-2026 market data, the top 10 global suppliers are:

Classificação	Empresa	País	Key Strengths
1	Panasonic	Japão	High reliability, automotive-grade series
2	TDK (Epcos)	Japan/Germany	Wide voltage range, industrial applications
3	Vishay	EUA	High capacitance density, military specs
4	KEMET (Yageo)	USA/Taiwan	Advanced film technology, long life
5	WIMA	Alemanha	Premium audio-grade capacitors
6	Nichicon	Japão	Miniaturized designs, low ESR
7	Murata	Japão	High-frequency performance
8	AVX (Kyocera)	USA/Japan	Specialty film capacitors
9	Cornell Dubilier	EUA	High-voltage industrial capacitors
10	Hitachi AIC	Japão	Automotive and power electronics

3. Top 10 Polyester Capacitor Suppliers & Factories in China

China has emerged as a global manufacturing hub for polyester capacitors, offering competitive pricing and large-scale production. The following are the top 10 Chinese manufacturers as of 2026:

Classificação	Empresa	Localização	Especialização
1	Jianghai Capacitor	Nantong	Aluminum electrolytic & film capacitors
2	Nantong Jianghai	Nantong	High-reliability PET capacitors
3	Xiamen Faratronic	Xiamen	Film capacitors for automotive
4	Shenzhen CapXon	Shenzhen	Miniature polyester capacitors
5	Shanghai Aishi	Xangai	Customized film capacitors
6	Dongguan Yunsheng	Dongguan	High-voltage series
7	Hangzhou Shuneng	Hangzhou	Energy storage capacitors
8	Wuhan Huayuan	Wuhan	Industrial-grade capacitors
9	Shenzhen JEC	Shenzhen	Low-cost mass production
10	Changzhou Youhao	Changzhou	Specialty PET/PP films

4. Global Supplier & Factory Contact Table (With Emails)

Below is a curated list of verified contact emails for major global polyester capacitor manufacturers. Note: Emails are for business inquiries only.

Empresa	País	E-mail de contacto	Gama de produtos
Panasonic	Japão	capacitor.sales@jp.panasonic.com	ECHU, ECW series
TDK	Japão	capacitors@tdk.com	B32520-B32529 series
Vishay	EUA	filmcapacitors@vishay.com	MKT, MKP series
KEMET	USA/Taiwan	capacitor.sales@kemet.com	PHE, R76 series
WIMA	Alemanha	info@wima.de	MKS, FKP series
Nichicon	Japão	sales@nichicon.co.jp	UES, UFG series
Murata	Japão	capacitors@murata.com	GRM, LLL series
AVX	EUA	filmcapacitors@avx.com	FFVS, FFVE series
Cornell Dubilier	EUA	sales@cde.com	CDE series
Hitachi AIC	Japão	capacitor@hitachi-aic.com	HCE series

5. Factors to Consider When Choosing a Chinese Manufacturer

5.1 Quality Certifications

Ensure the manufacturer holds ISO 9001, IATF 16949 (for automotive), and RoHS/REACH compliance. Many Chinese factories also have UL and CQC certifications.

5.2 Production Capacity & Lead Time

Verify monthly output (e.g., 10 million units per month for medium factories) and typical lead times (usually 2-4 weeks for standard parts).

5.3 Technical Support & Customization

Check if they offer custom capacitance, voltage ratings, or lead spacing. Top factories provide free samples and engineering support.

5.4 Pricing & MOQ

Minimum order quantities (MOQ) vary from 1,000 to 100,000 pieces. Compare FOB prices (e.g., $0.02-$0.10 per piece for common values).

5.5 Reputation & Reviews

Use platforms like Alibaba, Global Sources, and Made-in-China to check ratings and customer feedback. Also request client references.

6. Porquê comprar a fabricantes chineses? Principais vantagens

• Custo-eficácia: Chinese factories offer 30-50% lower prices compared to Japanese or European counterparts due to economies of scale and lower labor costs.
• Large Production Volume: China produces over 60% of the world’s film capacitors, ensuring stable supply even for large orders.
• Prototipagem rápida: Many manufacturers can deliver samples within 3-5 days and mass production within 2 weeks.
• Gama de produtos diversificada: From standard 100nF/63V to high-voltage 10µF/1000V, Chinese factories cover all common specifications.
• Condições de pagamento flexíveis: T/T, L/C, and even PayPal for small orders are commonly accepted.
• Inovação: Chinese companies are increasingly investing in R&D for miniaturization and high-temperature stability.

7. In-Depth Introduction to Chinese Factories

7.1 Jianghai Capacitor (Nantong)

Founded in 1958, Jianghai is one of China’s oldest capacitor manufacturers. They produce over 2 billion capacitors annually, including PET film capacitors. Their products are used in Huawei, Siemens, and Schneider Electric equipment.

7.2 Xiamen Faratronic

A subsidiary of Faratronic Group, this factory specializes in metallized polyester film capacitors for automotive and renewable energy applications. They have IATF 16949 certification and supply to Tesla and BYD.

7.3 Shenzhen CapXon

Known for miniaturized capacitors, CapXon produces surface-mount (SMD) polyester capacitors widely used in smartphones and IoT devices. They have 20+ automated production lines.

8. How to Find Professional Wholesalers in China

1. Use B2B Platforms: Search “polyester capacitor” on Alibaba.com, Made-in-China.com, and GlobalSources.com. Filter by “Verified Supplier” and “Trade Assurance”.
2. Attend Trade Shows: Visit the Canton Fair (April/October) and Electronica China (July) to meet suppliers face-to-face.
3. Hire a Sourcing Agent: Companies like Sourcify or local agents in Shenzhen can audit factories and negotiate prices.
4. Check Industry Directories: Refer to the China Eletrónico Componentes Association (CECA) list for verified manufacturers.
5. Request Samples: Always order 10-20 samples for testing before placing bulk orders.

9. Application Scenarios & Solutions

Aplicação	Solution	Recommended Series
Power Supply Filtering	Low ESR, high ripple current	Panasonic ECW, Vishay MKT
Audio Coupling	Low distortion, high stability	WIMA MKS, Nichicon UES
Automotive ECU	High temperature (125°C), AEC-Q200	TDK B32529, KEMET R76
LED Lighting	Compact size, long life	Murata LLL, CapXon SMD
Industrial Motor Drives	High voltage (1000V+), snubber circuits	Cornell Dubilier CDE
Eletrónica de consumo	Miniature, low cost	Jianghai MEF, Yunsheng

10. Perguntas mais frequentes (10 FAQs)

1. Q: What is the difference between polyester and polypropylene capacitors?
   A: Polyester (PET) has higher dielectric constant (3.3 vs 2.2), allowing smaller size for same capacitance, but polypropylene (PP) has lower loss and better stability.
2. Q: Can polyester capacitors be used in AC circuits?
   A: Yes, they are non-polarized and suitable for AC applications up to their rated voltage.
3. Q: What is the typical lifespan of a polyester capacitor?
   A: 10,000 to 100,000 hours at rated temperature, depending on quality and operating conditions.
4. Q: Are polyester capacitors suitable for high-frequency circuits?
   A: They have moderate self-resonant frequency (SRF), typically up to 10 MHz, making them suitable for audio and low-frequency RF.
5. Q: How do I identify counterfeit polyester capacitors?
   A: Check for consistent markings, measure capacitance and ESR with an LCR meter, and verify with manufacturer’s datasheet.
6. Q: What voltage ratings are common?
   A: 50V, 63V, 100V, 250V, 400V, 630V, and 1000V are standard.
7. Q: Can I replace a polypropylene capacitor with polyester?
   A: Only if the application tolerates higher dissipation factor and temperature coefficient. Not recommended for precision circuits.
8. Q: What is the temperature range?
   A: Typically -55°C to +125°C for standard types, with some high-temp versions up to +150°C.
9. Q: Do polyester capacitors have polarity?
   A: No, they are non-polarized and can be inserted in either direction.
10. Q: How should I store polyester capacitors?
    A> Store in a cool, dry place (15-35°C, <60% RH) away from direct sunlight and corrosive gases.

11. Procurement Considerations

• Specification Verification: Always confirm capacitance tolerance (e.g., ±5%, ±10%), voltage rating, and lead spacing (e.g., 5mm, 7.5mm, 10mm).
• Embalagem: Choose between bulk pack, tape & reel (for SMD), or ammo pack (for through-hole).
• Shipping Terms: Clarify FOB (e.g., FOB Shenzhen) or CIF terms to avoid unexpected costs.
• Inspeção: Hire a third-party inspection agency (e.g., SGS, Bureau Veritas) for pre-shipment quality checks.
• Segurança de pagamento: Use letter of credit (L/C) for large orders or PayPal for small samples to mitigate fraud risk.

12. Recommended Books

1. “Capacitor Handbook” by Cletus J. Kaiser – Comprehensive guide to all capacitor types including polyester.
2. “Film Capacitors” by Dr. Paul D. Mitcheson – Focuses on theory and application of film capacitors.
3. “Electronic Components: A Complete Reference for Project Builders” by Delton T. Horn – Practical guide for sourcing and using capacitors.
4. “The Art of Electronics” by Paul Horowitz and Winfield Hill – Classic reference with capacitor selection chapters.
5. “Capacitors: Technology and Trends” by R. P. Deshpande – Covers global manufacturing and market trends.

13. Product Quotation (Sample Pricing)

Prices are indicative FOB Shenzhen for standard 100nF/63V polyester capacitors (through-hole, 5mm lead spacing) in 100,000-piece quantities as of Q1 2026:

Manufacturer	Unit Price (USD)	MOQ (pcs)	Prazo de execução
Jianghai	$0.025	10,000	2 weeks
Faratronic	$0.030	5,000	3 weeks
CapXon	$0.020	20,000	1 week
Yunsheng	$0.018	50,000	2 weeks
Shuneng	$0.035	1,000	4 weeks

14. Industry Standards

Polyester capacitors must comply with international and national standards:

• IEC 60384-13: Fixed capacitors for use in electronic equipment – Part 13: Sectional specification for fixed metallized polyester film dielectric capacitors.
• EIA-198: Standard for film capacitors.
• GB/T 14579 (China): General specification for polyester film capacitors.
• UL 810: Capacitors for use in electronic equipment (safety standard).
• RoHS Directive 2011/65/EU: Restriction of hazardous substances.
• AEC-Q200: Stress test qualification for passive components in automotive applications.

15. Global Import/Export Rankings (Top 5)

Based on 2025 trade data (HS Code 8532.25 – Fixed capacitors with dielectric of paper or plastics):

Top 5 Exporting Countries

1. China – 58% of global exports ($4.2 billion)
2. Japan – 15% ($1.1 billion)
3. Germany – 8% ($580 million)
4. USA – 5% ($360 million)
5. South Korea – 4% ($290 million)

Top 5 Importing Countries

1. USA – 22% ($1.6 billion)
2. China – 12% ($870 million) – re-export for assembly
3. Germany – 10% ($720 million)
4. South Korea – 7% ($510 million)
5. Japan – 6% ($430 million)

16. Google Search Commercial Keywords – 10 FAQ Pairs

1. Q: Where to buy polyester capacitors in bulk?
   A: Purchase from Alibaba, Global Sources, or directly from Chinese manufacturers like Jianghai and Faratronic. Use “polyester capacitor wholesale” as search term.
2. Q: What is the price of polyester capacitor 100nF?
   A: Prices range from $0.01 to $0.05 per piece depending on quantity and tolerance. Check current quotes on 1688.com or Alibaba.
3. Q: Which polyester capacitor manufacturer is best for automotive?
   A: Panasonic, TDK, and Faratronic (China) have AEC-Q200 certified series. Search “automotive polyester capacitor supplier”.
4. Q: How to test polyester capacitor quality?
   A> Use an LCR meter to measure capacitance, ESR, and dissipation factor. Also perform a voltage withstand test at 1.5x rated voltage.
5. Q: Can I get free samples of polyester capacitors?
   A: Yes, many Chinese suppliers offer free samples for shipping cost. Contact via Alibaba Trade Assurance.
6. Q: What is the lead time for polyester capacitor orders?
   A: Standard lead time is 2-4 weeks for mass production, 3-5 days for samples.
7. Q: Are Chinese polyester capacitors reliable?
   A: Reputable brands like Jianghai and Faratronic meet international standards. Always request certification documents.
8. Q: How to calculate shipping cost for polyester capacitors?
   A> Use FOB or CIF terms. For sea freight, estimate $500-$2000 per 20-foot container depending on destination.
9. Q: What is the MOQ for custom polyester capacitors?
   A: Typically 10,000 to 50,000 pieces for custom values or lead spacing.
10. Q: Do polyester capacitors have a shelf life?
    A: Yes, recommended storage is 2-3 years under proper conditions. After that, re-test before use.

17. Customs Data & Tariff Rates

For HS Code 8532.25 (fixed capacitors with dielectric of paper or plastics), the following tariff rates apply as of 2026:

País/Região	Import Duty Rate	Notas
Estados Unidos	2.5% (MFN)	Additional Section 301 tariffs may apply for Chinese origin (25%)
União Europeia	0% (for most origins)	Preferential rates for GSP countries
China	5% (MFN)	Reduced rates for ASEAN, Korea FTA
Japão	0% (WTO bound rate)	Free trade agreements with many countries
Coreia do Sul	3% (MFN)	FTA with USA, EU reduces to 0%
Índia	10% (MFN)	Higher for non-ASEAN origin

Note: Always check with a customs broker for the latest rates, as trade policies change frequently.

18. Why Choose Small & Medium-Sized Factories

• Flexibilidade: Small factories (50-200 employees) often accept smaller MOQs (1,000-5,000 pieces) and custom orders.
• Resposta mais rápida: Decision-making is quicker, with sample turnaround in 2-3 days.
• Serviço personalizado: Direct communication with the factory owner or engineer, leading to better problem-solving.
• Preços competitivos: Lower overhead costs can result in 10-20% price advantage over large corporations.
• Inovação: Many small factories specialize in niche products (e.g., high-voltage, low-ESR) that large players ignore.
• Risk Mitigation: Diversifying suppliers across multiple small factories reduces dependency on a single source.

19. April 2026 News Summary (Compiled from Major Media)

• Source: Reuters (April 3, 2026) – “Global capacitor shortage eases as Chinese factories ramp up production. Polyester capacitor prices drop 15% year-on-year.”
• Source: Nikkei Asia (April 8, 2026) – “Panasonic announces new high-temperature polyester capacitor series for EV inverters, rated up to 150°C.”
• Source: China Daily (April 12, 2026) – “Jianghai Capacitor invests $50 million in new PET film production line in Nantong, targeting 30% capacity increase.”
• Source: Electronics Weekly (April 18, 2026) – “EU proposes new eco-design regulations for capacitors, requiring 95% recyclability by 2030.”
• Source: Bloomberg (April 22, 2026) – “US tariffs on Chinese capacitors remain at 25%, prompting buyers to shift to Southeast Asian sources.”
• Source: South China Morning Post (April 25, 2026) – “Xiamen Faratronic wins contract to supply capacitors for India’s 5G infrastructure rollout.”

20. Visão geral dos dados principais do mercado de 2026

Métrica	Valor	Fonte
Global polyester capacitor market size	$8.5 billion (2026)	Pesquisa Grand View
Compound annual growth rate (CAGR)	4.2% (2024-2030)	Inteligência de Mordor
China’s share of global production	62%	China Electronics Components Association
Average selling price (100nF/63V)	$0.025 (FOB China)	Industry survey
Top application segment	Consumer electronics (35%)	Statista
Automotive segment growth	8.5% YoY	Yole Développement
Number of manufacturers in China	Mais de 500	China Electronic Components Association

21. Customer & Market Pain Points

• Inconsistência de qualidade: Many buyers report variations in capacitance and ESR between batches from Chinese suppliers. Solution: Require batch testing reports and use third-party inspection.
• Produtos de contrafação: Fake capacitors with incorrect ratings are common in the spot market. Solution: Buy directly from authorized distributors or verified factories.
• Long Lead Times for Custom Orders: Custom voltage or lead spacing can take 6-8 weeks. Solution: Plan ahead and maintain safety stock.
• Barreiras de comunicação: Language and time zone differences cause delays. Solution: Use bilingual sourcing agents or platforms with Chinese customer support.
• Tariff & Trade Uncertainty: US-China trade tensions increase costs unpredictably. Solution: Diversify sourcing to Vietnam, Malaysia, or Mexico.
• Minimum Order Quantities: Large factories require MOQs of 100,000+ pieces. Solution: Partner with small factories or use group buying through trading companies.
• Lack of Technical Documentation: Some Chinese suppliers provide incomplete datasheets. Solution: Request full specifications and compare with IEC standards.
• Shipping Damage: Capacitors are sensitive to moisture and mechanical shock. Solution: Specify moisture barrier bags and anti-static packaging.
• Payment Fraud: Scams involving fake bank accounts are prevalent. Solution: Use Trade Assurance on Alibaba or L/C for large transactions.
• Conformidade ambiental: RoHS and REACH certifications may be falsified. Solution: Verify certificates with issuing bodies like SGS or TÜV.