Datasheet

20© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard F3118_R76_125C • 3/28/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Film Capacitors – Polypropylene Pulse/High Frequency Capacitors
R76, 125°C Double Metallized Polypropylene Film, Radial, DC and Pulse Applications (Automotive Grade)
Manual Soldering Recommendations
Following is the recommendation for manual
soldering with a soldering iron.
The soldering iron tip temperature should
besetat350°C(+10°Cmaximum)withthe
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 Iron Bit Temperature (°C)
Soldering Process
The implementation of the RoHS directive has resulted in the selection of SnAgCu (SAC) alloys or SnCu alloys as primary solder.
Thishasincreasedtheliquidustemperaturefromthatof183°C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.TherecommendedsolderprolesfromKEMETshouldbeused.Please
consult KEMET with any questions. 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.
Reowsolderingisnotrecommendedforthrough-holelmcapacitors.Exposingcapacitorstoasolderingproleinexcessofthe
above recommended limits may result in 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