Press-Fit Aluminum Electrolytic Capacitors
ALF40, +105°C
Overview
Applications
The KEMET ALF40 Press-Fit capacitors are suited for high
reliability and long life applications, such as frequency
converters, solar inverters, advanced energy storage
systems, and switch mode power supplies (SMPS). The
extended temperature range allows increased ripple
currents at lower temperatures.
The KEMET ALF40 Press-Fit capacitors eliminate the
need for solder, 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. These
capacitors cover a wide range of case sizes and voltage
ratings. The ALF40 offers high voltages up to 500 VDC,
high ripple currents, good surge voltage capability, and a
very long life performance. Rated operating temperature is
105°C.
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 ALF40 Press-Fit
offers:
• Compact size
• Long life – up to 9,000 hours at +105°C (VR, IR applied)
• High ripple current
• High voltage – up to 500 V
• Excellent surge voltage capability
• 35, 40, 45, and 50 mm diameters with 4 or 5 pin
configuration
• Optimized designs available upon request
Click image above for interactive 3D content
Open PDF in Adobe Reader for full functionality
Part Number System
ALF40
Series
Press-Fit Type
Aluminum Electrolytic
C
Termination
See Termination Table
822
Capacitance Code (µF)
First two digits
represent significant
figures. Third digit
specifies number of
zeros.
EF
Size Code
See Dimension Table
025 = 25
040 = 40
063 = 63
100 = 100
200 = 200
025
Rated Voltage (VDC)
250 = 250
350 = 350
400 = 400
500 = 500
One world. One KEMET
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
A4078_ALF40 • 4/10/2018
1
Press-Fit Aluminum Electrolytic Capacitors – ALF40, +105°C
Performance Characteristics
Item
Capacitance Range
Rated Voltage
Operating Temperature
Storage Temperature Range
Capacitance Tolerance
120 – 120,000 µF
25 – 500 VDC
−40 to +105°C
−55 to +105°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%
2,000 hours at +85°C or 30,000 hours at +40°C 0 VDC
I = 0.003 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 10g maximum acceleration.
Vibration applied for three
2-hour sessions at 10 – 500 Hz
(Capacitor clamped by body).
0.35 mm displacement amplitude
or 5g 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 +105°C (hours)
8,000
9,000
Rated Voltage at +105°C
(hours)
13,000
14,000
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 40/105/56
Surge Voltage
Condition
≤ 30 s surge followed by a no load
period of 330s, 1,000 cycles at +85°C
≤ 500 ms surge, 100 cycles
at 20°C, occurring randomly
throughout the life of the capacitor
Voltage (VDC)
25
28.75
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
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
A4078_ALF40 • 4/10/2018
2
Press-Fit Aluminum Electrolytic Capacitors – ALF40, +105°C
Test Method & Performance
Endurance Life Test
Conditions
Temperature
Test Duration
Ripple Current
Voltage
+105°C
5,000 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
EL
EP
FB
FC
FD
FE
FF
Dimensions in mm
D
L
−0/+1
35
35
35
35
35
35
35
35
40
40
40
40
40
40
40
40
40
45
45
45
45
45
±2
30
35
40
45
50
55
60
80
30
35
40
45
50
55
60
80
105
30
35
40
45
50
Approximate
Weight
Grams
42
50
55
65
70
75
80
105
49
57
65
80
82
95
98
131
170
62
72
82
92
103
Size Code
FG
FH
FL
FP
KB
KC
KD
KE
KF
KG
KH
KL
KP
KC
KD
KE
KF
KG
KH
KL
KP
Dimensions in mm
D
L
−0/+1
45
45
45
45
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
±2
55
60
80
105
30
35
40
45
50
55
60
80
105
35
40
45
50
55
60
80
105
Approximate
Weight
Grams
113
123
164
215
75
88
100
113
126
138
151
201
264
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
A4078_ALF40 • 4/10/2018
3
Press-Fit Aluminum Electrolytic Capacitors – ALF40, +105°C
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
A4078_ALF40 • 4/10/2018
4
Press-Fit Aluminum Electrolytic Capacitors – ALF40, +105°C
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
A4078_ALF40 • 4/10/2018
25 ±0.1
5
