Datasheet

6© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard F3070_PME261 • 1/17/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Film Capacitors – General Purpose AC/DC, Metallized Paper
PME261, 10.2 – 25.4 mm Lead Spacing, 400 – 1,000 VDC
Manual Soldering Recommendations
Following is the recommendation for manual
soldering with a soldering iron.
Soldering iron tip temperature should be set
at350°C(+10°Cmaximum)withthesoldering
duration not to exceed more than three
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 iron bit temperature (°C)
Soldering Process
The implementation of the RoHS directive has resulted in the selection of SnAuCu (SAC) alloys or SnCu alloys as primary solder.
Thishasincreasedtheliquidustemperaturefromthatof183ºCforSnPbeutecticalloyto217–221°Cforthenewalloys.Asa
result, the heat stress to the components, even in wave soldering, has increased considerably due to higher pre-heat and wave
temperatures.Polypropylenecapacitorsareespeciallysensitivetoheat(themeltingpointofpolypropyleneis160–170°C).Wave
soldering can be destructive, especially for mechanically small polypropylene capacitors (with lead spacing of 5 mm to 15 mm),
and great care has to be taken during soldering. In general, the wave soldering curve from IEC Publication 61760–1 Edition 2
servesasasolidguidelineforsuccessfulsoldering.PleaseseeFigure1.TherecommendedsolderprolesfromKEMETshould
be used. Please consult KEMET with any questions.
Reowsolderingisnotrecommendedforthrough-holelmcapacitors.Exposingcapacitorstoasolderingproleinexcessofthe
above the recommended limits may result to degradation or permanent damage to the capacitors.
Do not place the polypropylene capacitor through an adhesive curing oven to cure resin for surface mount components. Insert
through-holepartsafterthecuringofsurfacemountparts.ConsultKEMETtodiscusstheactualtemperatureproleintheoven,
if through-hole components must pass through the adhesive curing process. A maximum two soldering cycles is recommended.
Please allow time for the capacitor surface temperature to return to a normal temperature before the second soldering cycle.
Wave Soldering Recommendations
0
50
100
150
200
250
300
0
40
80
120
160
200
240
Temperature (°C)
Time (s)
ca 2°C/second
ca 3.5°C/second typical
ca 5°C/second
Cooling
2 +3 seconds maximum
115 °C max
T
preheat
∆T < 150°C
100 °C
Preheating
Typical
First wave
Second wave
260°C