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TMOV34S Thermally Protected Varistor – Littelfuse

It consists of a 34mm square format varistor element ( MOV) with an integral thermally activated element designed to open in the event of overheating due to abnormal over-voltage, limited current conditions as outlined in UL1449.

TMOV34S Thermally Protected Varistor – Littelfuse

The device has a third lead, an indicator lead, which may be used to indicate that the MOV has been disconnected from the circuit.

TMOV34S Thermally Protected Varistor - Littelfuse

The integrated configuration also offers lower inductance than most discreet solutions resulting in improved clamping performance to fast over voltage transients.

from Littelfuse

EverCAP – Double Layer Capacitors – Nichicon

They have two types, High Power Density for a large current discharge. High Energy Density for a long backup time. Over a million Charge/Discharge cycles. High Efficiency. Capable of fully discharging to zero volts.

EverCAP – Double Layer Capacitors – Nichicon

EverCAP - Double Layer Capacitors - Nichicon

Some things to note for a design engineer. The EDLC or Electric Double Layer Capacitors …

  • Note Specified Endurance and end of life.
  • Excess Vibration can alter Specs, Damage.
  • Caution – Never Exceed Maximum temperature.
  • Specs are very dependent on Temperature.
  • Maintain Low ripple current on Charge/Discharge.
  • It is Polarized like a Electrolytic cap.
  • No Heating Parts or Heatsink near the Cap.

JC Series Evercap from Nichicon
This is a snap-in terminal type. Good voltage holding property. Suitable for quick charge and discharge.

  • Temperature range : -25°C to + 60°C
  • Capacitance : 15F to 150F
  • Voltage : 2.5V
  • Leakage Current – 0.5 mA

From – Nichicon