INTRODUCTION

S

HARMA Mica capacitors have been designed to meet the exacting physical, electrical & environmental

requirements of the MIL-C-5 and RS-153 specifications. Careful selection of raw materials, starting with the

finest available grade of India Ruby Mica, and the constant monitoring of all equipment and processes,

provides an overall uniform level of quality consistent with today's most sophisticated electronic equipment.

Ideal for Tuning, Timing, Filtering and Coupling Circuits.

FEATURES

GENERAL SPECIFICATIONS

CAPACITANCE RANGE: 1 pF to 82,000 pF VOLTAGE RATING: 50 V DC to 500 V DC (Higher voltage capacitors can also be custom

made) TEMPERATE RATING: - 40 to + 150 °C CASE SIZES: DM 05 to DM 42 INSULATION RESISTANCE: 100,000 M Ohms minimum at

25°C for capacitance up to 10,000 pF. Please refer to characteristic curve for values above the range. DISSIPATION FACTOR < 0.1% at

1 M Hz for values between 100 to 1,000 pF <0.2 at 1K Hz for values above 1,000 pF. Please refer to characteristic curve for values above

the range.

LIFE TEST DETAILS:

Capacitors shall withstand 1.5 times the rated DC voltage at 125 °C for 2000 hours. After the test:

1.

Capacitance change shall not exceed 1% of the initial value or 1 pF, which ever is greater.

2.

Dissipation Factor shall be within 1.5 times the original limits.

3.

Insulation Resistance shall meet the initial specified requirements.

4.

There shall be no remarkable change in the appearance and the marking shall remain legible.

Dimension

CASE CODE

DM05

DM10

DM12

DM15

DM19

DM20

DM30

DM42

B

3.05

3.57

5.00

5.95

8.73

11.11

11.11

26.99

± 0.8

± 0.8

± 0.8

± 0.8

± 0.8

± 0.8

± 0.8

± 0.8

C

0.40

0.40

0.50

0.60

0.80

0.80

1.00

1.00

Dimension

CASE CODE

DM05

DM10

DM12

DM15

DM19

DM20

DM30

DM42

B

0.120

0.141

0.197

0.234

0.344

0.438

0.438

1.063

± 0.031

± 0.031

± 0.031

± 0.031

± 0.031

± 0.031

± 0.031

± 0.031

C

0.016

0.016

0.020

0.025

0.032

0.032

0.04

0.04

#26

#26

#24

#22

#20

#20

#18

#18

Case

Capacitance Range in pF

Equivalent

Size

Standard

MIL

MIL Series

DM05

1 to 390

-

None

DM10

1 to 820

1 to 390

CM 04

DM12

1 to 2,500

-

None

DM15

1 to 2,500

1 to 390

CM 05

DM19

100 to 8,200

430 to 4,700

CM 06

DM20

680 to 12,000

-

None

DM30

5,100 to 20,000

5,100 to 20,000

CM 07

DM42

16,000 to 82,000

-

None

LEAD DIMENSIONS IN INCHES

LEAD DIMENSIONS IN MILLIMETERS

CASE SIZE Vs. CAPACITANCE RANGE

LL" = 1.25" min.

Dimension "R" = 0.078" max. for DM 05 TO DM 15 and 0.125"max. for DM 19 to DM 42

LL" = 30 mm min.

Dimension "R" = 2.0 mm max. for DM 05 TO DM 15 and 3.2 mm max. for DM 19 to DM 42

DIMENSIONS:

LL = 31.75 mm (1.25”) min.

Sharma Mica Capacitors

Page 6

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SECI Engineers & Buyers' Guide

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