Electronic Products Division
Santa Maria, California

MICA RELIABILITY

HIGH VOLTAGE MICA CAPACITORS

• Temperature Stability (-65°C to 125°C) • High Reliability (Proven Rel-testing) • 100% Inspection (Capacitance, Voltage, Dissipation Factor and Burn-in) • Capacitance Stability (Temperature, Voltage and Frequency) • Low Inductance Capability (EFI Applications) • Mechanical Durability (Military Shock and Vibration Environments)

 

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HIGH VOLTAGE
Micapacitors
From Teledyne Reynolds
Electronic Products Division  

Glossary of High Voltage Capacitor Terms:

MICA: Mineral silicates H2KA13(Si04 )3 naturally occurring. An excellent
insulator resistant to temperatures. Used as a dielectric in capacitors
and as insulation in high voltage, high temperature environments.

Teledyne Reynolds Micapacitors are manufactured with reliability as the prime
consideration. Teledyne Reynolds engineers have developed and implemented an extensive reliability proofing program consisting of thermoset epoxy impregnated MICA dielectric systems over a period of 540,000 unit hours of operation. (consult the factory for reliability data)

Teledyne Reynolds Micapacitors are available in a variety of configurations:
 

• Raw Sections: For use in potted/embedded next higher assemblies.
• Wrapped and End Capped: For stand alone applications requiring no subsequent potting or embedment processes. Wrap material is Mylar® or woven glass.
• Fiberglass Encased Epoxy-filled Construction: Provides the attributes
  of the epoxy molded configuration with no hard tooling required.
   
• Low Inductance/High Current: Ideal for Exploding Foil Initiators (EFI).
  Micapacitors designed for very low inductance (6nH) and high currents (3 to 10 kA) are available in any of the above configurations. Similar low inductance, high current designs are available for Exploding BridgeWire initiators (EBW).
   
• MONOBLOC Construction: A unique method of construction used in Teledyne Reynolds Micaplier high voltage multipliers.

 

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Micapacitors	Specifications
General specifications Capacitance: 20 pF to 10 µF Voltage Range: (operating) 1,000 to 60,000 D.C. Temperature Range: (operating) -55 to + 125 degrees C. Energy Density: 0.2 to 1.5 joules per cubic inch. (consult factory for application details) Note: A two hour burn-in is performed on every capacitor manufactured.	Capacitor Proof Voltage A DC voltage, as listed below, shall be applied for a period of five seconds with charge and discharge current limited to one ampere.   Rated Voltage Test Voltage 0 to 8.0 KV 200% 8.1 to 10.0 KV 175% 10.1 to 12.0 KV 150% 12.1 to 20.0 KV 140% 20.1 to 30.0 KV 130% 30.1 KV and up 120% Capacitance tolerance is plus or minus 10%

   

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Micapacitor Applications

Epoxy Molded Micapacitors Epoxy molded assemblies can be configured in solid complex shapes and mounting arrangements. Units can contain several voltage and capacity values and a variety of terminations. These configurations offer stand-alone shock, vibration and environmental security with Mica reliability. Epoxy molded Micapacitors are currently qualified for use on major military and commercial programs.
	Micapacitors in Voltage Multipliers Raw Micapacitors are used in Teledyne Reynolds Micaplier voltage multipliers. These units have output voltages ranging to 160 kVDC. Micapliers are used in a wide range of military and commercial applications. Typical applications are: CRT anode and focus supplies for airborne EFIS (Electronic Flight Instrumentation Systems), X-Ray equipment and low power (mini) TWT's.
Micapacitor Variety Shown are Micapacitors in various configurations: Epoxy molded, fiberglass encased with epoxy filling, wrapped and end capped. Also shown are capacitors attached to low inductance strip lines for use on EFI and EBW initiators and ESA&F systems.

 

 

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Special Order Micapacitors

Let us design a high voltage mica capacitor to your requirements by e-mail or FAX. Just provide us with a few critcal items like operating voltage and temperature and in two days we will provide critical dimensions, weight, price and delivery! 

Mica Paper Only the finest Mica paper is used in the manufacture of Teledyne Reynolds Micapacitors. The material comes in a roll of a specified width and thickness and undergoes a thorough incoming inspection before use. Precision winding machines are used to wind the Mica material into a custom, computer generated configuration.
	Raw Micapacitors During the winding process, tabs are inserted to serve as termination points. The wound sections are then impregnated in a special epoxy and pressed to a specific density. The sections are then cured under pressure and post cured in an oven. After extensive testing, the units are ready to be assembled into a next higher assembly by the customer or at Teledyne Reynolds Santa Maria facility.
Wrapped & End Capped Micapacitors The raw Micapacitors are wrapped in Mylar® or woven glass, have lead wires attached and are end filled with epoxy. These units are a stand-alone configuration which require no subsequent potting or embedment processes.

 

 

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Standard Micapacitors All standard capacitors meet the specifications and testing requirements shown on the Micapacitors Specifications chart.
Part Number	Voltage (KVDC)	Cap. (nF)	Length	Width	Thickness
M103A252A000	2.5	10	1.31/33.3	0.73/18.5	0.13/3.3		PDF DATA SHEET
M253A252A000	2.5	25	1.56/39.6	0.83/21.1	0.18/4.6
M503A252A000	2.5	50	1.94/49.3	1.15/29.2	0.184/4.7
M104A252A000	2.5	100	2.19/55.6	1.36/34.5	0.24/6.1
M254A252A000	2.5	250	2.81/71.4	1.79/45.5	0.30/7.6
M502A502A002	5	5	1.44/36.6	0.82/20.8	0.17/4.3		PDF DATA SHEET
M103A502A000	5	10	1.69/42.9	0.97/24.6	0.20/5.1
M253A502A000	5	25	2.19/55.6	1.32/33.5	0.22/5.6
M503A502A003	5	50	2.56/65.0	1.62/41.1	0.26/6.6
M104A502A004	5	100	3.06/77.7	2.01/51.1	0.31/7.9
M252A752A000	7.5	2.5	1.56/39.6	0.84/21.3	0.19/4.8		PDF DATA SHEET
M502A752A000	7.5	5	1.81/46.0	1.08/27.4	0.20/5.1
M103A752A000	7.5	10	2.19/55.6	1.32/33.5	0.22/5.6
M253A752A000	7.5	25	2.69/68.3	1.75/44.5	0.28/7.1
M503A752A002	7.5	50	3.19/81.0	2.16/54.9	0.33/8.4
M102A103A000	10	1	1.56/39.6	0.90/22.9	0.19/4.8		PDF DATA SHEET
M252A103A000	10	2.5	1.94/49.3	1.18/30.0	0.20/5.1
M502A103A001	10	5	2.19/55.6	1.35/34.3	0.23/5.8
M103A103A000	10	10	2.69/68.3	1.69/42.9	0.25/6.4
M253A103A000	10	25	3.19/81.0	2.08/52.8	0.34/8.6
M503A103A003	10	50	3.81/96.8	2.60/66.0	0.40/10.2
M102A133A000	12.5	1	1.94/49.3	1.08/27.4	0.20/5.1		PDF DATA SHEET
M252A133A000	12.5	2.5	2.19/55.6	1.36/34.5	0.24/6.1
M502A133A000	12.5	5	2.56/65.0	1.62/41.1	0.26/6.6
M103A133A001	12.5	10	3.12/79.2	2.06/52.3	0.27/6.9
M253A133A001	12.5	25	3.94/100	2.72/69.1	0.35/8.9
M503A133A001	12.5	50	4.69/119	3.26/82.8	0.41/10.4
M102A153A001	15	1	2.19/55.6	1.31/33.3	0.21/5.3		PDF DATA SHEET
M252A153A000	15	2.5	2.56/65.0	1.59/40.4	0.25/6.4
M502A153A000	15	5	2.81/71.4	1.81/46.0	0.31/7.9
M103A153A001	15	10	3.31/84.1	2.18/55.4	0.34/8.6
M253A153A003	15	25	4.44/113	3.10/78.7	0.38/9.7
M102A203A001	20	1	2.57/65.3	1.58/40.1	0.25/6.4		PDF DATA SHEET
M252A203A000	20	2.5	2.82/71.6	1.78/45.2	0.25/6.4
M502A203A000	20	5	3.44/87.4	2.24/56.9	0.34/8.6
M103A203A000	20	10	4.19/106	2.58/65.5	0.42/10.7
M253A203A000	20	25	5.32/135	3.77/95.8	0.58/14.7
M501A253A000	25	0.5	2.69/68.3	1.65/41.9	0.27/6.9		PDF DATA SHEET
M102A253A002	25	1	2.82/71.6	1.84/46.7	0.31/7.9
M252A253A000	25	2.5	3.32/84.3	2.26/57.4	0.36/9.1
M502A253A001	25	5	3.82/97.0	2.68/68.1	0.41/10.4
M103A253A001	25	10	4.69/119	3.30/83.8	0.46/11.7
M501A303A000	30	0.5	3.19/81.0	2.09/53.1	0.33/8.4		PDF DATA SHEET
M102A303A001	30	1	3.57/90.7	2.46/62.5	0.35/8.9
M252A303A000	30	2.5	4.32/110	3.06/77.7	0.39/9.9
M502A303A000	30	5	4.69/119	3.42/86.9	0.68/17.3