TDK Corp. has expanded its EPCOS aluminum electrolytic capacitor family with the introduction of the EPCOS B43657 series with snap-in terminals. These snap-in capacitors with case sizes from 22 × 25 mm to 35 × 60 mm claim extremely high capacitance density, offering increased capacitance by 20% compared with their predecessor. They offer capacitance values from 120 µF to 1250 μF and rated voltages from 450 VDC to 475 VDC.

The aluminum electrolytic capacitors attain a service life of at least 2,000 hours at a maximum operating temperature of 105°C. A key feature is their high-ripple-current capability of up to 8.54 A (120 Hz, 60°C), said TDK. Accurate lifetime calculation under application-specific conditions is available via TDK’s online AlCap Tool.

The high C/V capacitors are housed in an aluminum case with an insulated PET sleeve without an insulation sheet at the bottom of the can. Other features include a capacitance tolerance of +/- 20% and an operating temperature range of –40°C to 105°C.

Thanks to their high reliability, the RoHS-compatible capacitors can be used in high-end switched-mode power supplies and power supplies for industrial and telecommunications applications. Other applications include UPS systems, photovoltaic inverters and frequency converters.

Kyocera AVX has launched the new SCM Series of double-layer, series-connected electrochemical supercapacitor modules. The SCM Series can be used standalone or in conjunction with primary or secondary batteries to extend battery life and backup time.

These supercap modules also can provide instantaneous power pulses in hold-up, energy harvesting and pulse power applications in a range of markets including industrial, energy, telecommunications, automotive, transportation and medical industries. Applications include heavy industrial equipment, uninterrupted power supplies, utility grid, microgrid storage and power shaving, energy harvesting, regenerative energy capture, variable speed pitch control, GSM and GPRS wireless communications, automotive and transportation vehicles and portable medical devices.

Featuring high capacitance, very low equivalent series resistance (ESR), high efficiency, high power density and excellent pulse power handling characteristics, the supercapacitor modules support active cell balancing and withstand high current, high vibration and frequent charge and discharge cycles, according to Kyocera AVX.

The supercapacitor modules offer an operating temperature range from -40°C to 65°C and lifetimes that extend to millions of cycles. They are lead-free compatible, RoHS compliant and compliant with the UL 810A standard for electrochemical capacitors. All devices are tested and qualified for life cycle, high-temperature load life, temperature characteristics, vibration resistance and humidity characteristics.

The first products released in the new SCM family include five part numbers.

• The SCMA63K586SPPB2 is rated for 16 V, 58 F (+30%/-10%), 5-mA DCL, and 15-mΩ ESRDC. The device is housed in a plastic case that measures 226.2 × 48.6mm (L x W) and is equipped with terminal screws.
• The SCMA63S586SPPB2 is rated for 160 V, 5.8 F (+30%/-10%), 25-mA DCL and 150-mΩ ESRDC. Also packaged in a plastic case, the device measures 364.5 × 234 mm (L x W) with terminal screws.
• The SCMZ1EK507STAB2 is rated for 16 V, 500 F (+30%/-10%), 6-mA DCL and 2.5-mΩ ESRDC. It is packaged in an aluminum case that measures 418 × 68 mm (L x W) and is equipped with a four-pin connector.
• The SCMZ1EP1F6STAB2 is rated for 48 V, 165 F (+30%/-10%), 6-mA DCL and 5.22-mΩ ESRDC. It also is enclosed in an aluminum case, measuring 418 × 194 mm (L x W) with a four-pin connector.
• The SCMZ85P836STAB2 is rated for 48 V, 83 F (+30%/-10%), 3-mA DCL and 9-mΩ ESRDC. Also housed in an aluminum case, the device measures 418 × 194 mm (L x W) and comes with a four-pin connector.

The lead time for the SCM series is currently 20 weeks. They can be ordered from Digi-Key and Mouser.

Bourns, Inc. has added five new automotive-grade, AEC-Q200 compliant model series to its line of semi-shielded power inductors. These include the following models: the SRN2010BTA, SRN2510BTA, SRN3010BTA, SRN3012BTA and SRN3015BTA Series with enhanced reliability thanks to their bottom-soldered lead wire construction that provides increased mechanical strength and stability.

The power inductor series are available in a wide range of inductance ratings (see datasheets) with a 20% tolerance. They also offer multiple footprints with a 1-mm max profile. The operating temperature range is -55°C to 125°C. The inductors are manufactured with a ferrite core and enameled copper wire. The terminal finish is Ag/Ni/Sn, and the coating is magnetic resin. The devices offer a moisture sensitivity level (MSL) of 1.

They combine the feature benefits of both non-shielded and shielded inductors, said Bourns, which provides lower magnetic field radiation compared to non-shielded inductors and a more cost-effective alternative to fully shielded ferrite-based inductors.

Applications include differential choke power conversion solutions for automotive systems, as well as DC/DC converters and power supplies in consumer, industrial and telecom electronics that require high reliability. The new semi-shielded power inductor series are available now and are RoHS compliant and halogen-free.

Also recently introduced for automotive applications is the Bourns Model AD and SD Series of miniature thermal cutoff (TCO) mini-breakers  with automotive-grade approval. They are compliant to AEC-Q200 equivalent standards and offer resettable and repeatable protection for a range of automotive heater circuit-based applications.

Cornell Dubilier Electronics, Inc. (CDE) has launched its automotive-grade MYH series of Y2 class RFI and EMI suppression capacitors that are designed for harsh environments. These line-to-ground capacitors filter out electromagnetic noise in applications such as motors, automated meter readers, UPS, power supplies, charging systems and appliances.

The AEC-Q200-qualified suppression capacitors meet a 2,000-hour temperature, humidity and bias (THB) life test. The THB test, conducted at 85°C/85% relative humidity at rated voltage, subjected these components to twice the industry standard test hours required to meet IEC 60834, Class III-B for THB, CDE said.

They also passed AEC-Q200 automotive testing. Tests include mechanical shock and vibration, thermal cycling, solvent resistance and solderability, which qualify the capacitors for use in the most demanding industrial, automotive and consumer applications.

These film capacitors are constructed from metallized polypropylene film encapsulated with a self-extinguishing resin and plastic box that meets the UL 94V-0 requirements.

Key specs include a capacitance value range from 0.001 to 1 µF in 29 standard values, at 300 VAC, 50/60Hz. Capacitance tolerance is +/-10% (+/-20% optional). The operating temperature ranges from -40°C to 110°C. The series meets multiple international safety agency approvals, including UL, CSA and VDE for safety and performance in Y2, line-to-ground applications.

The MYH Series capacitors are available now from authorized distributors.