DE21XSA470KJ2BT01F datasheet, PDF

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DE21XSA470KJ2BT01F: DescriptionCeramic Disc Capacitors; CategoryPassive components; File Size332KB，23 Pages; ManufacturerMurata; Websitehttps://www.murata.com

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Ceramic Disc Capacitors

DE21XSA470KJ2BT01F Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	Murata
Product Category	Ceramic Disc Capacitors
Capacitance	47 pF
Voltage Rating AC	250 VAC
Dielectric	SL
Tolerance	10 %
Diameter	7 mm
Lead Spacing	5 mm
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 125 C
Termination Style	Radial
Product	Safety Ceramic Disc Capacitors
Packaging	Cut Tape
Packaging	MouseReel
Packaging	Reel
Application	General Purpose
Thickness	4 mm
Class	Class 1
Dissipation Factor DF	2.5 %
Lead Diameter	0.6 mm
Lead Style	Straight
Factory Pack Quantity	500
Temperature Coefficient / Code	- 1000 PP/C to + 350 PPM/C

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Reference Specification

Type SA

Safety Standard Certified Lead Type Disc Ceramic Capacitors for General Purpose

Product specifications in this catalog are as of Dec. 2017, and are subject to change or

obsolescence without notice.

Please consult the approval sheet before ordering.Please read rating and Cautions first.

Reference only

CAUTION

1. OPERATING VOLTAGE

When DC-rated capacitors are to be used in AC or ripple current circuits, be sure to maintain the

Vp-p value of the applied voltage or the Vo-p which contains DC bias within the rated voltage range.

When the voltage is started to apply to the circuit or it is stopped applying, the irregular voltage may

be generated for a transit period because of resonance or switching. Be sure to use a capacitor

within rated voltage containing these irregular voltage.

Voltage

DC Voltage

DC+AC Voltage

AC Voltage

Pulse

Voltage(1)

Pulse

Voltage(2)

Positional

Measurement

Vo-p

Vp-p

2. OPERATING TEMPERATURE AND SELF-GENERATED HEAT

Keep the surface temperature of a capacitor below the upper limit of its rated operating temperature

range. Be sure to take into account the heat generated by the capacitor itself.

When the capacitor is used in a high-frequency current, pulse current or the like, it may have the self-

generated heat due to dielectric-loss. Applied voltage should be the load such as self-generated

heat is within 20

C

on the condition of atmosphere temperature 25

C.

When measuring, use a

thermocouple of small thermal capacity-K of

0.1mm

and be in the condition where capacitor is not

affected by radiant heat of other components and wind of surroundings. Excessive heat may lead to

deterioration of the capacitor’s characteristics and reliability.(Never attempt to perform measurement

with the cooling fan running. Otherwise, accurate measurement cannot be ensured.)

3. TEST CONDITION FOR WITHSTANDING VOLTAGE

(1) TEST EQUIPMENT

Test equipment for AC withstanding voltage should be used with the performance of the wave similar

to 50/60 Hz sine wave.

If the distorted sine wave or over load exceeding the specified voltage value is applied, the defective

may be caused.

(2) VOLTAGE APPLIED METHOD

When the withstanding voltage is applied, capacitor’s lead or terminal should be firmly connected

to the out-put of the withstanding voltage test equipment, and then the voltage should be raised

from near zero to the test voltage.

If the test voltage without the raise from near zero voltage would be applied directly to capacitor, test

voltage should be applied with the *zero cross. At the end of the test time, the test voltage should be

reduced to near zero, and then capacitor’s lead or terminal should be taken off the out-put of the

withstanding voltage test equipment.

If the test voltage without the raise from near zero voltage would

voltage sine wave

be applied directly to capacitor, the surge voltage may arise,

and therefore, the defective may be caused.

*ZERO CROSS is the point where voltage sine wave pass 0V.

zero cross

- See the right figure -

4. FAIL-SAFE

When capacitor would be broken, failure may result in a short circuit. Be sure to provide an

appropriate fail-safe function like a fuse on your product if failure would follow an electric shock,

fire or fume.

5. VIBRATION AND IMPACT

Do not expose a capacitor or its leads to excessive shock or vibration during use.

EGD08E

1 / 21

Reference only

6. SOLDERING

When soldering this product to a PCB/PWB, do not exceed the solder heat resistance specification of

the capacitor. Subjecting this product to excessive heating could melt the internal junction solder and

may result in thermal shocks that can crack the ceramic element.

When soldering capacitor with a soldering iron, it should be performed in following conditions.

Temperature of iron-tip : 400

C

max.

Soldering iron wattage : 50W max.

Soldering time

: 3.5s max.

7. BONDING, RESIN MOLDING AND COATING

In case of bonding, molding or coating this product, verify that these processes do not affect the

quality of capacitor by testing the performance of the bonded, molded or coated product in the

intended equipment.

In case of the amount of applications, dryness / hardening conditions of adhesives and molding

resins containing organic solvents (ethyl acetate, methyl ethyl ketone, toluene, etc.) are unsuitable,

the outer coating resin of a capacitor is damaged by the organic solvents and it may result, worst

case, in a short circuit.

The variation in thickness of adhesive, molding resin or coating may cause a outer coating resin

cracking and/or ceramic element cracking of a capacitor in a temperature cycling.

8. TREATMENT AFTER BONDING, RESIN MOLDING AND COATING

When the outer coating is hot (over 100

℃)

after soldering, it becomes soft and fragile.

So please be careful not to give it mechanical stress.

Failure to follow the above cautions may result, worst case, in a short circuit and cause fuming or

partial dispersion when the product is used.

9. OPERATING AND STORAGE ENVIRONMENT

The insulating coating of capacitors does not form a perfect seal; therefore, do not use or store

capacitors in a corrosive atmosphere, especially where chloride gas, sulfide gas, acid, alkali, salt or

the like are present. And avoid exposure to moisture. Before cleaning, bonding, or molding

this product, verify that these processes do not affect product quality by testing the performance of a

cleaned, bonded or molded product in the intended equipment. Store the capacitors where the

temperature and relative humidity do not exceed -10 to 40

C

and 15 to 85%.

Use capacitors within 6 months after delivered. Check the solderability after 6 months or more.

10. LIMITATION OF APPLICATIONS

Please contact us before using our products for the applications listed below which require especially

high reliability for the prevention of defects which might directly cause damage to the third party’s life,

body or property.

1. Aircraft equipment

2. Aerospace equipment

3. Undersea equipment

4. Power plant control equipment

5. Medical equipment

6. Transportation equipment (vehicles, trains, ships, etc.)

7. Traffic signal equipment

8. Disaster prevention / crime prevention equipment

9. Data-processing equipment exerting influence on public

10. Application of similar complexity and/or reliability requirements to the applications listed

in the above.

EGD08E

2 / 21

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