Evans Capacitor Company THQA2/M2 Series Capacitors

Product Overview

The THQA2 and THQM2 series capacitors shall utilize sintered tantalum anodes and ruthenium oxide coated cathodes operating in aqueous electrolyte with additives. The components shall be hermetically sealed in a welded tantalum case with a glass-to-metal anode terminal seal.

The THQA2 capacitor comes in a 0.6? round diameter case. The THQM2 series packages the THQA2 capacitor in a 4 pin DAP mount. High Temperature (up to 200°C) and shock hardened series (>10,000g) options are available.

Electrical Specifications

Electrical Specifications

Rated Voltage Range8VDC to 125VDC
Capacitance Range215uF to 10,000uF
Life (@85ºC)>2000 hours @ Rated Voltage

Mechanical Specifications

Mechanical Specifications

ShockMIL-STD-202 METHOD 213GTested for 11ms at 50g
VibrationMIL-STD-202 METHOD 204D12 sweeps/axis, 20g peak
MIL-STD-202 METHOD 214I, Letter D1.5 hours/axis, 12g rms
Moisture ResistanceMIL-STD-202 METHOD 1066V Polarity
Solderability To ANSI J-STD-002.
Operating Temperature Range -55ºC to +85ºC or 125ºC with
voltage derating
Storage Temperature Range -62ºC to +130ºC

Capacitor Life

Capacitor Life

THQA2/M2 Series capacitors are rated for >2,000 hours at 85°C and rated voltage or 125°C at de-rated voltage.

THQS2 capacitors are designed for applications that are limited cycle, limited time on charge such as missile fusing and short duration power hold up.

THQA2-HT capacitors are rated for 1000 hours at 200°C or 2000 hours at 175°C at rated voltage.

THQA2/M2/S2/HT Series Capacitors have an unlimited Shelf life.

Handling Guidelines

Handling Guidelines

Attachment /Mounting by leads only is not allowed. Always ensure capacitor is firmly secured to PWB.

Provide adequate care to protect the Glass to Metal Seal (GTMS)

  • Avoid Forces on the (+) pin, lateral, axial or torque.
  • Avoid Mechanical Shock of any kind to the pin.
  • Secure the part to PWB before soldering


  • Rim of Capacitor is intended to mate directly to PWB. Advise using no-clean flux.
  • Utilize ANSI J–STD 001 Standard Through Hole Soldering methods.

Lead trimming

  • Provide adequate care if leads must be trimmed. Positive terminal can not be trimmed below the nickel lead (0.167 from rim).

CAD Files

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