29240B123JO0 - Cornell Dubilier Electronics (CDE)

Capac

High-Voltage Types Ordering Information, Mica Capacitors

Ordering Information

Ordering Information: Order by complete part number, as below. For other options,write your require-

ments on your quote request or purchase order.

Cast-Case Part Numbering System

271 30 B 470 J O

CDE Rated Peak

Type Voltage

10 = 1000

30 = 3000

250 = 25000

Capacitance Capacitance Temperature Range Mounting Style

470 = 47 pF Tolerance O = –55 °C to +125 °C 0 = No mounting plate

361 = 360 pF G = ±2% 1 = Mounting plate

122 = 1200 pF J = ±5% on bottom only

2 = Mounting plates

Characteristic on top and bottom

Temp. Coeff.

ppm/°C Capacitance Drift

Standard

Cap.

Range

Not specied

–200 to +200

–100 to +100

– 20 to +100

Not specied

±(0.5% +0.1pF)

±(0.3% +0.1pF)

±(0.1% +0.1pF)

1–18 pF

20–82 pF

Potted Case Styles

Transmitting mica capacitor type 272 is available in potted case package Type F2. To order this potted style

use the part numbering below and contact us.

F2 30

CDE Rated Peak

Type Voltage

(in hundreds

of peak work-

ing volts)

B 470 J M

Capacitance Capacitance Temperature Range

470 = 47 pF Tolerance M = –55 °C to +70 °C

361 = 360 pF G = ±2%

122 = 1200 pF J = ±5%

(standard)

Characteristic

Military Style Numbers

For the commercial equivalent to military style numbers CM66 through CM93 see the tables below.

Military Style No. Equivalent CDE Type

CM66 271, Mounting Style 0

CM67 271, Mounting Style 1

CM68 271, Mounting Style 2

CM70 F2

CM71 272, Mounting Style 0

CM72 272, Mounting Style 1

CM73 272, Mounting Style 2

CM76 291, Mounting Style 0

CM77 291, Mounting Style 1

CM78 291, Mounting Style 2

Military Style No. Equivalent CDE Type

CM81 292, Mounting Style 0

CM82 292, Mounting Style 1

CM83 292, Mounting Style 2

CM86 293, Mounting Style 0

CM87 293, Mounting Style 1

CM88 293, Mounting Style 2

CM91 294, Mounting Style 0

CM92 294, Mounting Style 1

CM93 294, Mounting Style 2

CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800 • www.cde.com

High-Voltage Types Application Guide, Mica Capacitors

Type 271 Type 273

MOUNTING STYLE 0 MOUNTING STYLE 1 MOUNTING STYLE 2 TOLERANCES UNLESS

Type 272

OTHERWISE SPECIFIED:

.031

MOUNTING STYLE 0 MOUNTING STYLE 1 MOUNTING STYLE 2

Type 291 Type 292

Cast-Case Styles

MOUNTING STYLE 0 MOUNTING STYLE 1 MOUNTING STYLE 2 MOUNTING STYLE 0 MOUNTING STYLE 1 MOUNTING STYLE 2

Type 293 Type 294

MOUNTING STYLE 0 MOUNTING STYLE 1 MOUNTING STYLE 2 MOUNTING STYLE 0 MOUNTING STYLE 1 MOUNTING STYLE 2

CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800 • www.cde.com

High-Voltage Types Application Guide, Mica Capacitors

CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800 • www.cde.com

High-Voltage Types Application Guide, Mica Capacitors

Specications

Capacitance is within tolerance

when measured at these frequen-

cies:

1–1000 pF @ 1 MHz

> 1000 pF @ 1 kHz

Dissipation Factor is typically less

than 0.05% when measured as

above. Dissipation factor (DF) equals

2πfRC, where f is the test frequency,

R is the equivalent series resistance

(Ω), and C is nominal capacitance

(F). Q is the reciprocal of the dissipa-

tion factor.

Operating Temperature Range is

–55 °C to +125 °C. Insulation Resis-

tance is no less than 7500 MΩ when

measured at 100 Vdc.

Temperature Coecient and Ca-

pacitance Drift: Measure the capac-

itors’ capacitance at 25 °C, 55 °C, 25

°C, 125 °C, and at 25 °C after stabi-

lizing at each temperature. The ca-

pacitance will meet the limits of the

Characteristic table shown in Order-

ing Information.

Rated Peak Voltage is not to be ex-

ceeded in actual use. Voltage ratings

are in the listings and apply under

the following conditions:

Temperature: Within the specied

operating temperature range.

Altitude: Up to 50,000 feet or

3.4 inches of mercury.

Relative Humidity: Up to 80%.

Frequency: As specied.

Where pulse conditions are en-

countered, contact us.

Withstanding Voltage: Capacitors

will withstand application of an ac

potential between terminals hav-

ing an rms value equal to the rated

peak voltage at a frequency of 100

Hz or less without damage, arcing or

breakdown. Apply the potential by

raising the voltage from zero to the

specied value. Apply the full po-

tential for a minimum of 5 seconds.

Case Insulation: Capacitor cases

will withstand, without damage, arc-

ing or breakdown, a 60-Hz peak ac

potential equal to twice the rated

peak voltage applied between the

terminals connected together and

a metal electrode touching the case.

Apply this potential for 1to 5 sec-

onds.

Current Ratings at various

fre-quencies are in the listings and

ap-ply under the following condi-

tions:

Temperature: 65 °C maximum

Derating Factor: None

Vibration: Capacitors will with-

stand vibrational forces occurring

at rates of from 10 to 55 Hz for 4½

hours. The total excursion during vi-

bration is 0.06 inches. At the end of

this period, make the following in-

spections and tests:

Visual and Mechanical Inspection:

No perceptible deterioration. With-

standing Voltage: As specied under

Withstanding Voltage.

Insulation Resistance: No less than

7500 MΩ.

Capacitance Change: Not to exceed

3% of the nominal value or one pico-

farad, whichever is greater.

Temperature and Immersion Cy-

cling: Capacitors will withstand the

temperature and immersion cycles

indicated in the tables below. Fol-

low three temperature cycles by two

immersion cycles. Make the mea-

surements listed below no more

than 30 minutes following the nal

immersion cycle:

Withstanding Voltage: As specied

under Withstanding Voltage.

Insulation Resistance: No less than

7500 MΩ.

Capacitance: Change not to exceed

4% of the nominal value or one pico-

farad, whichever is greater.

Temperature Cycling Test Con-

ditions

Steps Temp Interval

(°C) (Minutes)

1 –55 + 0 30

–3

2 25 +10 10 to 15

–5

3 125 + 3 30

–0

4 25 +10 10 to 15

–5

Immersion Test Conditions

•Number of cycles: 2

•Duration of each immersion: 15

minutes

•Immersion bath: Saturated solu-

tion of sodium chloride and water

•Temp. of hot bath: 65 –0 +5 ºC

•Temp. of cold bath: 25 –0 +10 ºC

Life Test: Subject all capacitors

to a temperature of 55 °C for 48

hours. Then subject units cast in

rectangular cases (Types 271, 272,

and 273) to a 60-Hz rms voltage

equal to the rated peak voltage

for 250 hours. Subject units cast in

cylindrical cases (Types 291, 292,

293, and 294) to a 60-Hz rms volt-

age equal to 90% of the rated peak

voltage for 250 hours. In both

tests, maintain the temperature

at 125 °C. After test, the capacitors

will meet these requirements:

Withstanding Voltage: As speci-

ed under Withstanding Voltage.

Insulation Resistance: No less than

7500 MΩ.

Capacitance Change: Within the

limits given in the table below or

one picofarad, whichever is great-

er.

Characteristic Maximum Cap.

B ±8%

C ±3%

D ±3%

E ±3%

In addition, the capacitor must

show no visual damage and the

markings must be legible

CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800 • www.cde.com

High-Voltage Types Application Guide, Mica Capacitors

Notice and Disclaimer: All product drawings, descriptions, specications, statements, information and data

(collectively, the “Information”) in this datasheet or other publication are subject to change. The customer

is responsible for checking, conrming and verifying the extent to which the Information contained in this

datasheet or other publication is applicable to an order at the time the order is placed. All Information given

herein is believed to be accurate and reliable, but it is presented without any guarantee, warranty, representation

or responsibility of any kind, expressed or implied. Statements of suitability for certain applications are based

on the knowledge that the Cornell Dubilier company providing such statements (“Cornell Dubilier”) has

of operating conditions that such Cornell Dubilier company regards as typical for such applications, but

are not intended to constitute any guarantee, warranty or representation regarding any such matter – and

Cornell Dubilier specically and expressly disclaims any guarantee, warranty or representation concerning

the suitability for a specic customer application, use, storage, transportation, or operating environment.

The Information is intended for use only by customers who have the requisite experience and capability to

determine the correct products for their application. Any technical advice inferred from this Information or

otherwise provided by Cornell Dubilier with reference to the use of any Cornell Dubilier products is given

gratis (unless otherwise specied by Cornell Dubilier), and Cornell Dubilier assumes no obligation or liability

for the advice given or results obtained. Although Cornell Dubilier strives to apply the most stringent quality

and safety standards regarding the design and manufacturing of its products, in light of the current state

of the art, isolated component failures may still occur. Accordingly, customer applications which require a

high degree of reliability or safety should employ suitable designs or other safeguards (such as installation

of protective circuitry or redundancies or other appropriate protective measures) in order to ensure that the

failure of an electrical component does not result in a risk of personal injury or property damage. Although

all product-related warnings, cautions and notes must be observed, the customer should not assume that all

safety measures are indicated in such warnings, cautions and notes, or that other safety measures may not be

required.