EPCOS Aluminum Electrolytic Capacitors for Industrial Power
EPCOS aluminum electrolytic capacitors are used across industrial power electronics where capacitance, voltage rating, ripple-current capability, terminal construction, case size, and long-term operating conditions must be matched carefully to the equipment. Apexon Supply supports global B2B sourcing for EPCOS and TDK EPCOS aluminum electrolytic capacitors used in DC-link circuits, frequency converters, variable-speed drives, industrial inverters, UPS systems, professional power supplies, and renewable-energy power conversion equipment.
This page focuses specifically on EPCOS aluminum electrolytic capacitors and the practical information industrial buyers need when identifying a replacement or sourcing an existing part number. It complements our broader EPCOS capacitor sourcing page and the complete EPCOS and TDK EPCOS product collection. Apexon Supply is an independent supplier and sourcing company; brand names and part numbers are used for product identification and procurement reference.
EPCOS Aluminum Electrolytic Capacitors for Industrial Power Electronics
EPCOS aluminum electrolytic capacitors are represented within the TDK Electronics capacitor portfolio in formats including screw-terminal and snap-in designs. These capacitor technologies are used in industrial equipment where high capacitance is needed for energy storage, smoothing, filtering, and DC-link functions. TDK Electronics identifies frequency converters, wind-power converters, solar inverters, professional power supplies, and UPS systems among the application areas for aluminum electrolytic capacitors.
For maintenance and procurement teams, the brand name alone is not enough to establish a correct replacement. EPCOS order codes can identify differences in capacitance, voltage, terminal style, mechanical dimensions, temperature category, useful-life class, and other electrical or construction details. A replacement review should therefore start with the complete part number and the original equipment requirements rather than a visual match alone.
Product Families and Representative EPCOS Models
The models below are representative examples from the Apexon Supply EPCOS collection and are not an exhaustive list. Exact specifications remain model-specific. Buyers should verify the original order code and datasheet before approving a part for installation.
B43564 Series Screw-Terminal Aluminum Electrolytic Capacitors
The B43564 family appears in several industrial EPCOS sourcing requirements in the Apexon catalog. Within the reviewed models, capacitance and terminal details vary even when the series number is the same. For example, EPCOS B43564-S9588-M3 is listed at 5800 µF and 400 VDC with M5 stud terminals, while EPCOS TDK B43564-S9528-M1 is listed at 5200 µF and 400 V DC with screw terminals. This is a useful example of why the full suffix matters during replacement sourcing.
B43456 and B43457 Series for High-Capacitance Industrial Requirements
Reviewed B43456 models include several different capacitance and voltage combinations. EPCOS B43456-S0338-M1 is listed at 3300 µF and 420 VDC with screw terminals. EPCOS B43456-S9758-M1 is listed at 7500 µF and 400 V DC with screw terminals. A higher-capacitance example, EPCOS B43456-S5129-M1, is listed at 12000 µF and 450 V DC with screw-terminal construction.
The related EPCOS B43457-S5338-M9 is listed at 3300 µF and 450 VDC with screw terminals and a 64 × 151 mm case. That mechanical dimension is specific to this model and should not be assumed for other B43457 or B43456 order codes.
B43701 Series
EPCOS B43701-S9338-M1 is listed at 3300 µF, 400 V DC, ±20% tolerance, and screw terminals. TDK documentation for the B43701/B43721 family covers screw-terminal aluminum electrolytic capacitors in the 350 to 450 V DC range, with model-specific capacitance values and electrical characteristics. When sourcing a B43701 replacement, the complete order code is necessary because series-level documents contain multiple variants.
Representative Model Comparison
| Model | Capacitance | Rated Voltage | Reviewed Terminal / Construction |
|---|---|---|---|
| B43564-S9588-M3 | 5800 µF | 400 VDC | M5 stud terminals |
| B43564-S9528-M1 | 5200 µF | 400 V DC | Screw terminals |
| B43456-S0338-M1 | 3300 µF | 420 V DC | Screw terminals |
| B43456-S9758-M1 | 7500 µF | 400 V DC | Screw terminals |
| B43456-S5129-M1 | 12000 µF | 450 V DC | Screw terminals |
| B43701-S9338-M1 | 3300 µF | 400 V DC | Screw terminals |
How to Select or Replace an EPCOS Aluminum Electrolytic Capacitor
Industrial capacitor replacement should be treated as an electrical and mechanical matching task. Two capacitors with the same capacitance and voltage can still differ in ripple-current capability, ESR, dimensions, terminal arrangement, temperature limits, mounting method, useful-life rating, or application suitability. For existing equipment, the original manufacturer part number is normally the best starting point.
- Full EPCOS or TDK EPCOS part number: Include every letter, number, hyphen, and suffix shown on the label or datasheet.
- Capacitance: Confirm the rated capacitance in µF and the allowed tolerance.
- Rated voltage: Confirm the required DC voltage rating and any applicable surge requirements from the equipment design or datasheet.
- Ripple current and ESR: These values affect heating and performance in rectifier, inverter, and DC-link service and should be checked at the applicable frequency and temperature.
- Terminal configuration: Screw terminals, stud arrangements, snap-in terminals, and other constructions are not automatically interchangeable.
- Case dimensions and mounting: Diameter, length, mounting hardware, terminal spacing, and available enclosure clearance can determine whether a replacement physically fits.
- Temperature and useful life: Review the component's rated temperature range, useful-life conditions, and the thermal environment inside the equipment.
- Application conditions: Frequency converter, UPS, inverter, power supply, servo drive, or renewable-energy converter requirements can place different electrical and thermal stresses on the capacitor.
If the original label is difficult to read, send clear photos of the capacitor body, top terminals, base, equipment nameplate, and any visible order code. A datasheet or machine manual can also help separate visually similar parts.
Industrial Applications
Aluminum electrolytic capacitors are commonly selected for power-electronics functions that require substantial capacitance in a compact package. TDK Electronics identifies industrial applications including frequency converters, professional power supplies, UPS systems, wind-power converters, and photovoltaic inverters. In these systems, aluminum electrolytic capacitors may be used in DC-link, smoothing, filtering, or energy-storage positions depending on the circuit design.
For maintenance teams working on drives and inverters, the capacitor bank is often part of the high-energy DC bus. Replacement decisions should therefore account for more than nominal capacitance. Electrical stress, ambient and internal temperatures, cooling, ripple current, mechanical installation, and the original equipment manufacturer's requirements all matter. The correct component is the one that satisfies the complete design requirement, not simply the closest available capacitance value.
Replacement and Obsolete EPCOS Capacitor Sourcing
Older industrial equipment can remain in service for many years after a particular capacitor series, suffix, packaging style, or production configuration becomes difficult to obtain through normal channels. Apexon Supply supports sourcing review for standard, older, discontinued, and difficult-to-find EPCOS and TDK EPCOS capacitor requirements. This support begins with identification: the original order code, capacitance, voltage, terminal configuration, dimensions, application, and available documentation are reviewed before a sourcing request is matched to a specific part.
When the exact original EPCOS capacitor can be sourced, buyers may still want label photos, packaging photos, date-code information, dimensions, or datasheet confirmation before shipment. When the original part cannot be located, a technically suitable alternative may be considered, but an alternative should not be treated as equivalent based on capacitance and voltage alone. Ripple-current rating, ESR, operating temperature, useful-life data, mounting, terminal configuration, case dimensions, polarity, safety considerations, and equipment requirements may all affect suitability.
Apexon Supply can help organize this comparison using the information available from the original component, manufacturer documentation, customer photos, and equipment data. Final approval of any substitute or cross-reference remains with the customer, end user, engineer, or other qualified technical personnel responsible for the equipment.
Why Industrial Buyers Use Apexon Supply
- Part-number verification: We review complete EPCOS order codes and suffixes to reduce errors caused by similar-looking models.
- Datasheet-based review: Available technical documentation can be compared against the requested capacitance, voltage, terminals, dimensions, and application requirements.
- Support for difficult-to-find parts: We handle sourcing inquiries for older, obsolete, discontinued, or locally unavailable industrial components.
- Photo and nameplate review: Customers can submit product labels, equipment nameplates, and installed-part photos when the exact model is uncertain.
- Global B2B order coordination: Apexon Supply supports quotation, quantity review, commercial documentation, and international delivery coordination for industrial buyers.
For additional EPCOS product categories, including film capacitors and power line filters, browse the full EPCOS collection. For a broader overview of capacitor and filter procurement support, visit our EPCOS capacitor supplier and sourcing page.
Frequently Asked Questions
Can Apexon Supply help source a specific EPCOS aluminum electrolytic capacitor?
Yes. Send the complete EPCOS or TDK EPCOS part number, required quantity, delivery country, and any available technical information. Sourcing options depend on the exact model and current market availability.
Can I replace an EPCOS capacitor with another model that has the same capacitance and voltage?
Not automatically. Capacitance and rated voltage are only part of the comparison. Ripple current, ESR, temperature range, useful life, terminal style, dimensions, mounting, and equipment requirements should also be reviewed before a replacement is approved.
What information should I send if the EPCOS part number is unreadable?
Send clear photos of the complete capacitor, label, terminals, base, nearby wiring, and equipment nameplate. Case dimensions, capacitance, voltage markings, and the machine or inverter model can also help with identification.
Do you support obsolete or difficult-to-find EPCOS capacitor models?
Apexon Supply accepts sourcing requests for older, discontinued, and difficult-to-find EPCOS and TDK EPCOS parts. Availability cannot be guaranteed, but the original part number and technical data can be reviewed to determine appropriate sourcing paths.
Which EPCOS capacitor series are shown on this page?
Representative reviewed models include B43564, B43456, B43457, and B43701 series order codes. These examples are not exhaustive; additional EPCOS capacitor models are available through the main collection and sourcing inquiry process.
Are all EPCOS capacitors on this page interchangeable with one another?
No. The models shown have different capacitance values, voltage ratings, dimensions, and terminal or construction details. Each part should be evaluated against the original equipment specification.
Is Apexon Supply an authorized EPCOS or TDK distributor?
Apexon Supply is an independent global B2B sourcing supplier. We do not represent ourselves as an authorized distributor, official representative, or brand affiliate unless that relationship is explicitly documented.
Request an EPCOS Capacitor Quote
For an EPCOS aluminum electrolytic capacitor RFQ, send the full part number, required quantity, capacitance, rated voltage, terminal type, dimensions if available, application or equipment model, destination country, and any datasheet or photos. If the original part is obsolete or unavailable, include the equipment information needed for replacement review. Apexon Supply can then evaluate the sourcing request and help coordinate the next procurement steps.