© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com

F3006_R46_X2_275_125C • 10/18/2016

8

Metallized Polypropylene Film EMI Suppression Capacitors

R46 Series, Class X2, 275 VAC, 125ºC

Manual Soldering Recommendations

Following is the recommendation for manual

soldering with a soldering iron.

The soldering iron tip temperature should

besetat350°C(+10°Cmaximum)withthe

soldering duration not to exceed more than 3

seconds.

Recommended Soldering Temperature

0

50

100

150

200

250

300

350

400

0

1

2

3

4

5

6

7

8

Soldering time (seconds)

Soldering Process

The implementation of the RoHS directive has resulted in the selection of SnAgCu (SAC) alloys or SnCu alloys as primary

solder.Thishasincreasedtheliquidustemperaturefromthatof183ºCforSnPbeutecticalloyto217–221ºCforthenew

alloys.Asaresult,theheatstresstothecomponents,eveninwavesoldering,hasincreasedconsiderablyduetohigherpre-

heat and wave temperatures. Polypropylene capacitors are especially sensitive to heat (the melting point of polypropylene

is160–170ºC).Wavesolderingcanbedestructive,especiallyformechanicallysmallpolypropylenecapacitors(withlead

spacingof5mmto15mm),andgreatcarehastobetakenduringsoldering.TherecommendedsolderprofilesfromKEMET

shouldbeused.PleaseconsultKEMETwithanyquestions.Ingeneral,thewavesolderingcurvefromIECPublication61760-

1 Edition 2 serves as a solid guideline for successful soldering. Please see Figure 1.

Reflowsolderingisnotrecommendedforthrough-holefilmcapacitors.Exposingcapacitorstoasolderingprofileinexcess

oftheabovetherecommendedlimitsmayresulttodegradationorpermanentdamagetothecapacitors.

Do not place the polypropylene capacitor through an adhesive curing oven to cure resin for surface mount components.

Insertthrough-holepartsafterthecuringofsurfacemountparts.ConsultKEMETtodiscusstheactualtemperatureprofile

in the oven, if through-hole components must pass through the adhesive curing process. A maximum two soldering cycles is

recommended.Pleaseallowtimeforthecapacitorsurfacetemperaturetoreturntoanormaltemperaturebeforethesecond

soldering cycle.

Wave Soldering Recommendations

0

50

100

150

200

250

300

0

40

80

120

160

200

240

Time (s)

ca 2 °C/s

ca 3.5 °C/s typical

ca 5 °C/s

Cooling

2+3s max

115 °C max

∆T <150 °C

100 °C

Preheating

Typical

Firstwave

Second wave

260 °C