EPCOS B41231A3109M Aluminum Electrolytic Capacitor

Date:2026-3-12 Share to:

Product Overview

The EPCOS B41231A3109M is a high-reliability, long-life aluminum electrolytic capacitor engineered for demanding industrial control applications. Manufactured by TDK-EPCOS — a global leader in passive components — this genuine OEM component delivers exceptional stability, low ESR, and extended service life under continuous operation. Designed for rugged environments, the B41231 series meets stringent industrial standards and ensures consistent performance in power supplies, motor drives, and automation systems.

Technical Specifications

Parameter Value
Brand EPCOS (TDK)
Model B41231A3109M
Capacitance 10,000 µF ±20%
Rated Voltage 63 V DC
Series B41231 — Industrial Long-Life Aluminum Electrolytic
Operating Temperature Range –40 °C to +105 °C
Lifetime (at 105 °C, rated voltage) Up to 5,000 hours
Ripple Current (100 Hz, 105 °C) 6.8 A
ESR (100 Hz, 20 °C) Max. 18 mΩ
Case Size (D × L) Φ35 mm × 50 mm

Key Features

  • Genuine EPCOS Original: Fully traceable, factory-fresh stock with authentic TDK-EPCOS markings and packaging.
  • Extended Lifetime Design: Optimized electrolyte and high-purity anode foil ensure ≥5,000 hours at full-rated voltage and 105 °C.
  • Industrial-Grade Reliability: Robust construction resistant to thermal cycling, vibration, and high ripple current stress.
  • Low Impedance & High Ripple Handling: Ultra-low ESR supports stable filtering in switching power supplies and inverters.
  • RoHS Compliant & Halogen-Free: Meets environmental and safety requirements for global industrial deployment.

Typical Applications

The EPCOS B41231A3109M is ideal for mission-critical industrial electronics requiring sustained capacitance stability and endurance, including:

  • AC/DC and DC/DC power supplies in PLCs and HMIs
  • Frequency inverters and servo drive intermediate bus filtering
  • Uninterruptible power supplies (UPS) and energy storage interfaces
  • Welding equipment, CNC controllers, and rail traction systems
  • Renewable energy converters (e.g., solar inverters, wind turbine controls)

Supply Information

We maintain in-stock inventory of the EPCOS B41231A3109M for immediate shipment worldwide. All units are verified genuine, unopened original packaging, with full traceability and compliance documentation available upon request. Volume pricing and custom labeling options are supported for OEM and contract manufacturing partners.

Contact Us

For technical inquiries, bulk quotations, or logistics support, contact our dedicated component team:

  • Phone: +86-21-24208728
  • Email: ghb585@163.com
  • Address: Shanghai, China

Gopi International provides expert technical support, datasheet assistance, cross-reference guidance, and application-level validation for EPCOS aluminum electrolytic capacitors — ensuring optimal selection and seamless integration.

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