Critical systems capacitor doubles predecessor's operating life

1st December 2016
Lanna Cooper

New Yorker Electronics has introduced a series ruggedised aluminium electrolytic capacitors with welded seals from Cornell Dubilier Electronics, the MLSG in both Flatpack and Slimpack. This series targets compact power supply applications in military and aerospace, as well as other critical systems.

Design enhancements and an electrolyte push the MLSG to nearly double the operating life of its predecessor, the MLSH, at no added cost.

Two principal package profiles are offered in this technology, the MLSG Flatpack which measures just 0.5" thick and 1.75" wide and the MLSG Slimpack measuring 0.5" thick by 1" wide, both offered in lengths of 1.5, 2, 2.5 or 3".

MLSG Flatpack welded seals capacitors can be made to withstand up to 50g vibrations (10g standard) and altitudes greater than 80,000ft. With stainless steel cases and near hermetic welded seals, they are built for extended duty in very harsh conditions. Especially noteworthy is that a high level of performance is maintained over the full operating temperature range. Capacitance retention at -55°C is very strong, with excellent high temperature performance up to 125°C. The new electrolyte system is fully REACH compliant, allowing application of the components in a broad range of applications where space efficiency and extraordinarily long life are required.

A wide range of standard capacitance values from 220 to 24,000µF are available, with voltage ratings up to 250VDC. The unique flat package design does more than save space. It is easily cooled, and can offer flexibility in ganging two or more devices in ways that conventional electrolytics can’t.

Options include High Vibration (HVMLSG), for performance to 50g, and High Reliability (HRMLSG), with burn-in at rated voltage and 85°C. Where a true glass-to-metal hermetic seal is required, CDE offers the MLSH Slimpack, which is similarly constructed in a flat stainless steel package. It is available in nine values, from 120 to 3,200µF, with ratings up to 250VDC.

With a profile of 1x0.5", the MLSG Slimpack welded seals capacitors fit into the tightest of spaces and meet a DC test of 5,000 hours at rated voltage, 125°C. MLSG Slimpack is a perfect fit for military and aerospace applications requiring a low profile, rugged design and long-life. The MSGL Slimpack is also available in an HRMLSG type for high reliability burn-in – and is rated to vibration levels of 80g.

Features and benefits

  • 5,000 hours at rated voltage of 125°C
  • Stainless steel case
  • Withstands more than 80,000ft. altitude
  • Type HR, high reliability burn-in
  • Type HV, high vibration levels
  • Flatpack to 50g; Slimpack to 80g


  • Aerospace
  • Military
  • Critical systems
  • Power supplies

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