AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper,
Class X1, 480 VAC
Overview
Applications
Multilayer metallized paper encapsulated and impregnated
in self-extinguishing material that meets the requirements
of UL 94 V–0.
Typical applications include worldwide use as an
electromagnetic interference suppressor in all X1 and
across-the-line applications.
Benefits
• Approvals: ENEC, UL, cUL
• Rated voltage: 480 VAC 50/60 Hz
• Capacitance range: 0.001 – 0.15 µF
• Lead Spacing: 10.2 – 25.4 mm
• Capacitance tolerance: ±20%
• Climatic category: 40/110/56, IEC 60068–1
• Tape & Reel in accordance with IEC 60286–2
• RoHS compliance and lead-free terminations
• Operating temperature range of −40°C to +110°C
• 100% screening factory test at 2,700 VDC
• Highest possible safety regarding active
and passive flammability
• Excellent self-healing properties that ensure long life,
even when subjected to frequent over-voltages
• Good resistance to ionization due to impregnated paper dielectric
• Impregnated paper that ensures excellent stability and reliability
properties, particularly in applications that operate continuously
Part Number System
P
278
H
E
102
M
480
A
Capacitor Class
Series
Lead Spacing
(mm)
Size Code
Capacitance
Code (pF)
Capacitance
Tolerance
Rated Voltage
(VAC)
Packaging
P = Paper
X1, Metallized
Paper
First two digits
represent
significant
figures. Third
digit specifies
number of
zeros.
M = ±20%
480 = 480
H = 10.2
Q = 15.2
C = 20.3
S = 22.5
E = 25.4
See Dimension
Table
See Ordering
Options Table
Built Into Tomorrow
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
1
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Ordering Options Table
Lead
Spacing
Nominal
(mm)
Type of Leads and Packaging
Lead Length
(mm)
Part Number
(Insert at 14th
character)
Standard Lead and Packaging Options
10.2
Bulk – Short Leads
6 +0/−1
C
Bulk – Maximum Length Leads
30 +5/−0
A
H0= 18.5 ±0.5
L
H0= 18.5 ±0.5
XLAF1
H0= 18.5 ±0.5
P
6 +0/−1
C
Tape & Reel (Standard Reel)
Other Lead and Packaging Options
Ammo Pack formed to
Tape & Reel (Large Reel)
Standard Lead and Packaging Options
Bulk – Short Leads
15.2
Bulk – Maximum Length Leads
Tape & Reel (Standard Reel)
30 +5/−0
A
H0= 18.5 ±0.5
L
H0= 18.5 ±0.5
P
6 +0/−1
C
Other Lead and Packaging Options
Tape & Reel (Large Reel)
Standard Lead and Packaging Options
Tray – Short Leads
20.3
Bulk – Maximum Length Leads
Tape & Reel (Standard Reel)
30 +5/−0
A
H0= 18.5 ±0.5
L
H0= 18.5 ±0.5
P
Other Lead and Packaging Options
Tape & Reel (Large Reel)
Standard Lead and Packaging Options
22.5
Tray – Short Leads
6 +0/−1
C
Bulk – Maximum Length Leads
30 +5/−0
A
H0= 18.5 ±0.5
L
H0= 18.5 ±0.5
P
Tape & Reel (Standard Reel)
Other Lead and Packaging Options
Tape & Reel (Large Reel)
Standard Lead and Packaging Options
25.4
Tray – Short Leads
6 +0/−1
C
Bulk – Maximum Length Leads
30 +5/−0
A
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
2
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Dimensions – Millimeters
FRONT VIEW
SIDE VIEW
L
T
H
S
LL
d
b
S
T
H
L
d
b
Size
Code
Nominal
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Tolerance
HE
HH
HL
QE
QJ
QS
CE
CJ
CP
SJ
SP
SU
EJ
EL
10.2
10.2
10.2
15.2
15.2
15.2
20.3
20.3
20.3
22.5
22.5
22.5
25.4
25.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
3.9
4.1
5.1
5.2
5.5
8.5
7.6
9.0
11.3
8.0
10.0
12.0
12.1
15.3
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
7.5
8.2
10.5
10.5
11.1
14.3
14.0
15.0
16.5
17.0
19.0
22.0
19.0
22.0
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
13.5
13.5
13.5
18.5
18.5
18.5
24.0
24.0
24.0
27.0
27.0
27.0
30.5
30.5
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
0.6
0.6
0.6
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
1.0
1.0
±0.05
±0.05
±0.05
±0.05
±0.05
±0.05
±0.05
±0.05
±0.05
±0.05
±0.05
±0.05
±0.05
±0.05
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
±0.4
Note: See Ordering Options Table for lead length (LL) options.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
3
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Performance Characteristics
Rated Voltage
Capacitance Range
Capacitance Tolerance
Temperature Range
Climatic Category
Approvals
480 VAC 50/60Hz
0.001 – 0.15 µF
±20%
−40°C to +110°C
40/110/56/B
ENEC, UL, cUL
Maximum Values at +23°C
Dissipation Factor
Test Voltage
Between Terminals
1 kHz
The 100% screening factory test is carried out at
2,700 VDC. The voltage level is selected to meet the
requirements in applicable equipment standards. All
electrical characteristics are checked after the test.
This test may not be repeated due to potential capacitor damage.
KEMET is not liable for any failures that result from performing the
test again.
Minimum Value Between Terminals:
Insulation Resistance
In DC Applications
Resonance Frequency
1.3%
≥ 12,000 MΩ
Recommended voltage ≤ 1,000 VDC
Tabulated self-resonance frequencies (f0)
refer to 5 mm lead length
Environmental Test Data
Test
IEC Publication
Procedure
Endurance
IEC 60384–14
1.25 x V R VAC 50 Hz , once every hour increase to 1,000 VAC for 0.1 seconds,
1,000 hours at upper rated temperature
Vibration
IEC 60068–2–6 Test Fc
3 directions at 2 hours each 10 – 500 Hz at 0.75 mm or 98m/seconds2
Bump
IEC 60068–2–29 Test Eb
4,000 bumps at 390 m/seconds2
Change of Temperature
IEC 60068–2–14 Test Na
Upper and lower rated temperature 5 cycles
Active Flammability
IEC 60384–14
V R + 20 surge pulses at 4.0 kV (pulse every 5 seconds)
Passive Flammability
IEC 60384–14
IEC 60384–1, IEC 60695–11–5 Needle-flame test
Damp Heat Steady State
IEC 60068–2–78 Test Cab
+40°C and 93% RH, 56 days
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
4
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Approvals
Certification Body
Mark
Specification
File Number
Intertek Semko AB
EN/IEC 60384–14
SE/0140–35A
UL
UL 60384–14
CAN/CSA-E60384–14–09
E73869
Environmental Compliance
All KEMET EMI capacitors are RoHS compliant.
Table 1 – Ratings & Part Number Reference
Capacitance
Value (µF)
Maximum Dimensions in mm
B
H
L
Lead Spacing
(p)
fo
(MHz)
dV/dt
(V/µs)
KEMET
Part Number
0.001
0.0015
0.0022
0.0033
0.0047
0.0068
0.010
0.015
0.022
0.033
0.047
0.068
0.033
0.047
0.068
0.1
0.1
0.15
3.9
3.9
3.9
4.1
5.1
5.2
5.2
5.5
8.5
7.6
9.0
11.3
8.0
8.0
10.0
12.0
12.1
15.3
7.5
7.5
7.5
8.2
10.5
10.5
10.5
11.1
14.3
14.0
15.0
16.5
17.0
17.0
19.0
22.0
19.0
22.0
13.5
13.5
13.5
13.5
13.5
18.5
18.5
18.5
18.5
24.0
24.0
24.0
27.0
27.0
27.0
27.0
30.5
30.5
10.2
10.2
10.2
10.2
10.2
15.2
15.2
15.2
15.2
20.3
20.3
20.3
22.5
22.5
22.5
22.5
25.4
25.4
53
44
37
30
24
18.5
15.5
13
9.6
9.6
7.5
6.2
7.2
6
4.8
3.6
3.9
3.2
2,000
2,000
2,000
2,000
2,000
1,400
1,400
1,400
1,400
1,000
1,000
1,000
1,000
1,000
1,000
600
600
600
P278HE102M480(1)
P278HE152M480(1)
P278HE222M480(1)
P278HH332M480(1)
P278HL472M480(1)
P278QE682M480(1)
P278QE103M480(1)
P278QJ153M480(1)
P278QS223M480(1)
P278CE333M480(1)
P278CJ473M480(1)
P278CP683M480(1)
P278SJ333M480(1)
P278SJ473M480(1)
P278SP683M480(1)
P278SU104M480(1)
P278EJ104M480(1)
P278EL154M480(1)
Capacitance Value
(µF)
B (mm)
H (mm)
L (mm)
Lead Spacing (p)
fo (MHz)
dV/dt
(V/µs)
KEMET
Part Number
(1) Insert ordering code for lead type and packaging. See Ordering Options Table for available options.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
5
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
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 the SnPb eutectic alloy to 217 – 221ºC 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 – 170ºC). 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 profiles 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.
Reflow soldering is not recommended for through-hole film capacitors. Exposing capacitors to a soldering profile in excess of the
above the recommended limits may result in degradation of 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 profile in the oven, if
through-hole components must pass through the adhesive curing process. A maximum of two soldering cycles is recommended.
Allow time for the capacitor surface temperature to return to a normal temperature before the second soldering cycle.
Figure 1
Wave Soldering Recommendations
300
2+3 seconds max
260°C
250
Second Wave
First Wave
Temperature (°C)
200
∆ T < 150°C
Cooling
Preheating
150
ca. 2°C/second
ca. 3.5°C/second typical
ca. 5°C/second
Tpreheat
100
Typical
50
0
0
40
80
120
160
200
240
Time (seconds)
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
6
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Soldering Process cont.
Wave Soldering Recommendations cont.
1. The table indicates the maximum set-up temperature of the soldering process.
Dielectric
film
material
Maximum Preheat
Temperature
Maximum Peak Soldering
Temperature
Capacitor
Capacitor
Capacitor
Capacitor
Pitch ≥ 10 mm Pitch > 15 mm Pitch ≤ 15 mm Pitch > 15 mm
Polyester
130°C
130°C
270°C
270°C
Polypropylene
110°C
130°C
260°C
270°C
Paper
130°C
140°C
270°C
270°C
Polyphenylene
Sulphide
150°C
160°C
270°C
270°C
2. The maximum temperature measured inside the capacitor: set the temperature so that inside the element the maximum
temperature is below the limit:
Dielectric Film Material
Maximum Temperature
Measured Inside the Element
Polyester
160°C
Polypropylene
110°C
Paper
160°C
Polyphenylene Sulphide
160°C
Temperature monitored inside the capacitor.
Selective Soldering Recommendations
Selective dip soldering is a variation of reflow soldering. In this method, the printed circuit board with through-hole
components to be soldered is preheated and transported over the solder bath, as in normal-flow soldering, without
touching the solder. When the board is over the bath, it is stopped. Pre-designed solder pots are lifted from the bath with
molten solder only at the places of the selected components, and then pressed against the lower surface of the board to
solder the components.
The temperature profile for selective soldering is similar to the temperature profile for double-wave flow soldering outlined in
this document. However, instead of two baths, there is only one with a time from 3 to 10 seconds. In selective soldering, the
risk of overheating is greater than in double-wave flow soldering, and great care must be taken so that the parts do
not overheat.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
7
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Construction
Detailed Cross Section
Metallized Impregnated Paper
(First Layer)
Self-Extinguishing
Resin
Self-Extinguishing
Resin
Metallized Impregnated Paper
(Second Layer)
Margin
Margin
Metal Contact
Layer
Margin
Leads
Metal Contact
Layer
Winding Scheme
Metal
Spraying
Material
Metallization
Metal
Spraying
Material
Impregnated
Paper
Impregnated
Paper
Single Design — Multilayer Impregnated Paper Dielectric
1 Section
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Metallization
Series Design — Multilayer Impregnated Paper Dielectric
2 Section
F3087_P278_X1_480 • 2/9/2022
8
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Marking
FRONT
BACK
KEMET
Logo
Series
IEC Climatic
Category
Voltage
Self
Healing
Approval
Mark
Approval
Mark
Manufacturing
Date Code
TOP
Capacitance
Safety Class
Manufacturing Date Code (IEC–60062)
Y = Year, Z = Month
Year
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
Code
A
B
C
D
E
F
H
J
K
L
M
N
P
R
S
T
U
V
W
X
A
Month
January
February
March
April
May
June
July
August
September
October
November
December
Code
1
2
3
4
5
6
7
8
9
O
N
D
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
9
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Packaging Quantities
Lead Spacing
(mm)
Thickness
(mm)
Height
(mm)
Length
(mm)
Bulk
Short Leads
Bulk
Long Leads
Standard Reel
360 mm
Large Reel
500 mm
Ammo
Formed
7.5
8.2
10.5
13.5
13.5
13.5
2,000
2,000
1,600
1,000
1,000
800
700
600
600
1,400
10.2
3.9
4.1
5.1
800
780
630
5.5
6.5
7.5
8.5
5.2
5.5
6.0
7.3
7.8
8.5
12.5
12.5
14.5
16.0
10.5
11.1
12.5
13.0
13.5
14.3
18.0
18.0
18.0
18.0
18.5
18.5
18.5
18.5
18.5
18.5
1,000
600
600
400
1000
1,000
600
600
600
500
500
400
400
250
500
500
400
400
400
300
600
400
400
400
600
500
400
400
400
350
7.6
8.4
9.0
11.3
14.0
14.0
15.0
16.5
24.0
24.0
24.0
24.0
1,500
1,200
1,500
1,000
250
200
200
150
250
250
250
180
400
8.0
10.0
12.0
17.0
19.0
22.0
27.0
27.0
27.0
1,200
1,000
800
200
150
100
200
180
350
10.6
10.5
12.1
15.3
16.1
17.3
19.0
22.0
30.5
30.5
30.5
30.5
1,000
1,000
800
600
150
100
100
75
15.2
20.3
22.5
25.4
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
1,200
800
500
500
F3087_P278_X1_480 • 2/9/2022
10
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Lead Taping & Packaging (IEC 60286–2)
Taping Specification
Standard IEC
60286-2
Dimensions in mm
Lead Spacing
+0.6/−0.1
F
5
7.5
Formed 7.5
10
15
22.5
27.5
F
±0.5
W
18
18
18
18
18
18
18
18+1/−0.5
Minimum
W0
5
5
5
5
5
5
5
Position of Sprocket Hole
±0.5
W1
9
9
9
9
9
9
9
9+0.75/−0.5
Distance Between Tapes
Maximum
W2
3
3
3
3
3
3
3
3
Sprocket Hole Diameter
±0.2
D0
4
4
4
4
4
4
4
4
Feed Hole Lead Spacing
±0.3
P0 (1)
12.7
12.7
12.7 (4)
12.7
12.7
12.7
12.7
12.7
Distance Lead – Feed Hole
±0.7
P1
3.85
3.75
3.75
7.7
5.2
5.3
5.3
P1
Deviation Tape – Plane
Maximum
∆ p
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
Lateral Deviation
Maximum
∆ h
2
2
2
2
2
2
2
2
0.7
0.9
Maximum
0.9
Maximum
0.9
Maximum
18.5±0.5
18.5±0.5
18.0+2/−0
58
58
58 Maximum
Carrier Tape Width
Hold-down Tape Width
Total Thickness
Sprocket Hole/Cap Body
Sprocket Hole/
Top of Cap Body
±0.2
t
Nominal
H0 (2)
Maximum
H1 (3)
0.7
0.7
0.7
18.5±0.5 18.5±0.5 18.5±0.5
32
(1) Maximum cumulative feed hole error, 1 mm per 20 parts
(2) 16.5 mm available on request
31
43
0.7
18.5±0.5 18.5±0.5
43
43
(3) Depending on case size
(4) 15 mm available on request
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
11
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
Lead Taping & Packaging (IEC 60286–2) cont.
Ammo Specifications
Series
P278
Dimensions (mm)
H
W
T
330
330
50
H
Reel Specifications
Series
P278
T
W
Dimensions (mm)
D
H
W
360
500
30
46 (Max)
D
H
W
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
12
Film Capacitors – AC Line EMI Suppression and RC Networks
P278, Metallized Impregnated Paper, Class X1, 480 VAC
KEMET Electronics Corporation Sales Offices
For a complete list of our global sales offi ces, please visit www.kemet.com/sales.
Disclaimer
All product specifi cations, statements, information and data (collectively, the “Information”) in this datasheet are subject to change. The customer is responsible for
checking and verifying the extent to which the Information contained in this 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 guarantee, warranty, or responsibility of any kind, expressed or implied.
Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET”) knowledge of typical operating conditions for such
applications, but are not intended to constitute – and KEMET specifi cally disclaims – any warranty concerning suitability for a specifi c customer application or use.
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 KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes
no obligation or liability for the advice given or results obtained.
Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given 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) 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 indicted or that other
measures may not be required.
KEMET is a registered trademark of KEMET Electronics Corporation.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3087_P278_X1_480 • 2/9/2022
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