Press-Fit Aluminum Electrolytic Capacitors
ALF20, +85°C
Overview
Applications
The KEMET ALF20 capacitors are ideally suited for
industrial and commercial applications, demanding high
reliability and long life expectancy. Typical applications
include frequency converters, advanced energy storage
systems, and switch mode power supplies (SMPS).
The KEMET ALF20 Press-Fit capacitors eliminate the
need for solder, and therefore, the associated production
and quality issues. They are the next evolution of snap-in
capacitors, providing reliable electrical contact and the
same vibration performance as soldered snap-in terminals.
The ALF20 offers high voltages up to 600 VDC, high ripple
currents, good surge voltage capability, and a very long life
performance.
Benefits
• Eliminates the manufacturing problems of soldering onto
thick PCB copper tracks which act as heat-sinks
• Eliminates fractured solder joints/cold-solder
• Skipping the solder operation allows for easy insertion
after the production washing process
• Capability to exchange components in the field
In addition to solving the solder issues, the ALF20 Press-Fit
offers:
• Compact size
• Long life – up to 18,000 hours at +85°C (VR, IR applied)
• High ripple current
• High voltage – up to 600 V
• Excellent surge voltage capability
• 35, 40, 45, and 50 mm diameters with 4 or 5 pin
configuration
• Optimized designs available upon request
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Part Number System
ALF20
Series
Press-Fit
Aluminum
Electrolytic
C
Termination
See Termination Table
392
Capacitance Code (µF)
First two digits
represent significant
figures. Third digit
specifies number of
zeros.
EF
Size Code
See Dimension Table
035 = 35
040 = 40
063 = 63
100 = 100
200 = 200
250 = 250
040
Rated Voltage (VDC)
350 = 350
400 = 400
450 = 450
500 = 500
550 = 550
600 = 600
One world. One KEMET
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
A4077_ALF20 • 6/19/2018
1
Press-Fit Aluminum Electrolytic Capacitors – ALF20, +85ºC
Performance Characteristics
Item
Capacitance Range
Rated Voltage
Operating Temperature
Capacitance Tolerance
150 – 100,000 µF
35 – 600 VDC
−40 to +85°C
±20% at 100 Hz/+20°C
D (mm)
Operational Lifetime
35
40 – 50
End of Life Requirement
Shelf Life
Leakage Current
∆ C/C < ±10%, ESR < 2 x initial ESR value
2,000 hours at +85°C or 30,000 hours at +40°C 0 VDC
I = 0.006 CV or 6,000 (µA, whichever is smaller)
C = rated capacitance (µF), V = rated voltage (VDC). Voltage applied for 5 minutes at +20°C.
Procedure
0.75 mm displacement amplitude
or 10 g maximum acceleration.
Vibration applied for three
2-hour sessions at 10 – 500 Hz
(Capacitor clamped by body).
0.35 mm displacement amplitude
or 5 g maximum acceleration.
Vibration applied for three
0.5-hour sessions at 10 – 55 Hz
(Capacitor clamped by body).
Requirements
Rated Voltage and Ripple
Current at +85°C (hours)
15,000
18,000
Rated Voltage at +85°C (hours)
24,000
29,000
Performance Characteristics
D ≤ 40 mm
Vibration Test Specifications
D > 40 mm
No leakage of electrolyte
or other visible damage.
Deviations in capacitance from
initial measurements must not
exceed: ∆ C/C < 5%
Standards
IEC 60384–4 long life grade 40/85/56
Surge Voltage
Test Condition
≤ 30 s surge followed by a no load
period of 330 s, 1,000 cycles at +85°C
≤ 500 ms surge, 100 cycles at 20°C,
occurring randomly throughout the
life of the capacitor
Voltage (VDC)
35
40.25
40
46
63
72.5
100
115
200
230
350
250
288
400
350
385
500
400
440
520
450
495
550
500
550
600
550
605
620
600
660
670
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
A4077_ALF20 • 6/19/2018
2
Press-Fit Aluminum Electrolytic Capacitors – ALF20, +85ºC
Test Method & Performance
Endurance Life Test
Conditions
Temperature
Test Duration
Ripple Current
Voltage
+85°C
2,000 hours
Rated ripple current in specified table
The sum of DC voltage and the peak AC voltage must not exceed the rated voltage of the capacitor
Performance
Performance
Capacitance Change
Equivalent Series Resistance
Leakage Current
The following specifications will be satisfied when the capacitor is tested at +20°C:
≤ 160 V
≥ 160 V
Does not exceed 200% of the initial value
Does not exceed leakage current limit
Within 15% of the initial value
Within 10% of the initial value
Dimensions – Millimeters
Size Code
DB
DC
DD
DE
DF
DG
DH
DL
EB
EC
ED
EE
EF
EG
EH
EJ
EL
EP
Dimensions in mm
D
L
−0/+1
35
35
35
35
35
35
35
35
40
40
40
40
40
40
40
40
40
40
±2
30
35
40
45
50
55
60
80
30
35
40
45
50
55
60
70
80
105
Approximate
Weight
Grams
42
50
55
65
70
75
80
105
49
57
65
80
82
95
98
113
131
170
Size Code
FB
FC
FD
FE
FF
FG
FH
FL
FP
KB
KC
KD
KE
KF
KG
KH
KL
KP
Dimensions in mm
D
L
−0/+1
45
45
45
45
45
45
45
45
45
50
50
50
50
50
50
50
50
50
±2
30
35
40
45
50
55
60
80
105
30
35
40
45
50
55
60
80
105
Approximate
Weight
Grams
62
72
82
92
103
113
123
164
215
75
88
100
113
126
138
151
201
264
Note: Dimensions include sleeving
Note: Dimensions include sleeving
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
A4077_ALF20 • 6/19/2018
3
Press-Fit Aluminum Electrolytic Capacitors – ALF20, +85ºC
Termination Tables
Termination Code
Diameter (mm)
35
40
45
50
C
G
•
•
•
•
•
•
•
Mounting: These capacitors are designed to be mounted by their terminals alone and may be used
in any position. The dummy pins must be isolated.
Termination
Code
C
G (D ≥ 40)
Termination
Style
4 Pin
5 Pin
LL
±1
5.5
5.5
SH
±1
2
2
Dimensions in mm
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
A4077_ALF20 • 6/19/2018
4
Press-Fit Aluminum Electrolytic Capacitors – ALF20, +85ºC
Termination Tables cont'd
Style C
SIDE VIEW
L
LL
TERMINAL END VIEW
PCB LAYOUT
Mounting Dimensions
60°
60°
22.5 ±0.1
D
SH
Ø1.486
TERMINAL END VIEW
LL
30°
PCB LAYOUT
Ø1.486
30°
Style G
SIDE VIEW
L
D
SH
(Final Plated Through-Hole)
Ø1.486
0.30
PCB Thickness: 1.57 mm Minimum
DRILL
COPPER
THICKNESS
FINAL PLATED
THROUGH-HOLE
DIAMETER
Ø1.613 ±0.025
0.025 minimum
Ø1.486 ±0.076
Pin Insertion Force: 125 N (28 lbf) maximum
Pin Retention Force: 62 N (14 lbf) minimum
Ø1.613
(Drill Hole)
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
A4077_ALF20 • 6/19/2018
25 ±0.1
5
Test/Measurement
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