TDK EPCOS Screw Terminal Capacitor Distributor | High-Voltage Aluminum Electrolytics

Genuine TDK EPCOS screw-terminal aluminum electrolytic capacitors, 200 V to 550 V with very high ripple and 85 °C life to 15,000 hours.

Read the TDK EPCOS Screw Terminal Selection Guide

TDK EPCOS Screw Terminal Overview

BeiLuo supplies genuine TDK EPCOS screw-terminal aluminum electrolytic capacitors, the large-can parts used for high-voltage bulk storage and DC-link smoothing in frequency converters, professional power supplies, UPS and renewable-energy equipment. A screw-terminal capacitor connects to a busbar or heavy cable, so it carries the high current and the very high ripple current of a power stage without the lead limitations of a PCB part, and its large can provides the thermal mass to dissipate the ripple heating. TDK EPCOS's screw-terminal families include the B43713 series, rated 85 °C with endurances of 12,000 to 15,000 hours, and the compact high-ripple B43703, B43704 and B43705 series, with rated voltages from 200 V to 550 V and capacitances from 820 uF to 33,000 uF. Case diameters from about 51 mm to 90 mm and case lengths to more than 200 mm cover a wide range, and mounting is by a clamp or a bottom stud with M5 or M6 threaded terminals. These capacitors are rugged, low-inductance and designed for the high ripple that a switching converter imposes, and capacitor banks can be built to multiply the voltage, capacitance and ripple capability. Typical uses include the DC link of a motor drive, the bus of a solar inverter, the storage of a UPS and the smoothing stage of a large power supply. Every capacitor BeiLuo ships is factory-traceable and includes an import declaration, a certificate of origin and a RoHS compliance file. Our FAE team helps you size capacitance and ripple and estimate lifetime from the case temperature.

TDK EPCOS Screw Terminal Product Range

In-stock Screw Terminal series available now, each with import documentation and FAE support. Click a model for full specifications and purchase information.

ModelCapacitanceVoltageCase SizeTemperatureEndurance
B43713A6478M0004700 uF500 VØ90 x 145.5 mm-40 °C to +85 °C12000 h at 85 °C
B43713E2688M0006800 uF250 VØ64.3 x 119.2 mm-25 °C to +85 °C15000 h at 85 °C

Frequently Asked Questions

How do I read the screw-terminal capacitor table?

Capacitance and Voltage set the energy storage and the voltage class, Case Size the mechanical fit and the thermal mass, and Endurance the life at the rated temperature and ripple. Temperature confirms the grade.

Match the voltage with margin and size the capacitance for the ripple you can tolerate.

Open the B43713A6478M000 page

Why choose a TDK EPCOS screw-terminal capacitor?

A screw-terminal capacitor connects to a busbar or heavy cable, so it handles the high current and very high ripple of a power stage far better than a leaded PCB part, and it packs large capacitance and thermal mass into a single can. TDK EPCOS parts are also low-inductance, which suits high-power converters.

That suits DC-link and bulk-storage designs.

Compare screw-terminal capacitors

How do I estimate the capacitor lifetime?

Aluminum electrolytic lifetime roughly doubles for every 10 °C reduction in core temperature, so estimate the core temperature from the case temperature and the ripple heating, then use the datasheet endurance and the lifetime rule. Keep the ripple within the rating for the temperature.

Our FAE team can run the lifetime estimate for you.

Request a lifetime estimate

Are the capacitors genuine and documented?

Every TDK EPCOS capacitor BeiLuo ships is factory-traceable and includes an import declaration, a certificate of origin and a RoHS compliance file. Mainstream models are held in regional warehouses.

Click a model for stock status, or request a quote for current lead time.

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Documentation

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