electronics
,
inc.
A
PPLICATION
S
PECIFIC
, C
USTOM
D
ESIGN
& H
IGH
P
ERFORMANCE
F
ILMS
Typical Custom designed Capacitors Manufactured by Dearborn
. . . . . . G-2
Application Specific Design.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-2
High Performance Films
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-3
Metalized Monolithic Polymer Film Capacitors
. . . . . . . . . . . . . . . . . . . . G-4
Type 520P. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-4
G-1
electronics
,
inc.
APPLICATION SPECIFIC DESIGN
CUSTOM-DESIGNED FILM AND PAPER CAPACITORS
Tailoring of capacitors to meet special
requirements for geometry and electrical
characteristics is often necessary. Dearborn
Electronic Inc. supplies “special” capacitors
utilizing a wide variety of dielectrics in many
different mechanical configurations. The
photograph below illustrates typical capacitors
tailored to meet specific application needs.
TYPICAL CUSTOM-DESIGNED CAPACITORS BUILT BY DEARBORN ELECTRONICS INC.
1. Metalized Paper-Polyester,
350µF to 385µF. 3300 VDC peak
2. Metalized Paper-Polyester,
160µF, 1600 VDC peak
3. Metalized Paper-Polyester,
25µF, 1600 VDC peak
4. Paper Polyester-Foil,
2 x 0.05µF, 16,500 VDC
5. Metalized Polycarbonate,
26µF ± 2%, 180 V RMS, 400 Hz
6. Metalized Polycarbonate,
40µF ±2%, 115 V RMS, 400 Hz
7. Polyester-Foil,
4.0µF ±5%, 2000 VDC
8. Polyester-Foil,
1.0µF ±10%, 350 VAC
9. Paper-Polyester-Foil,
0.20µF ±20%, 10,000 VDC
10. Metalized Polycarbonate,
8 x 1.0µF ±10%, 150VDC;
2 x 1.0µF ±10%, 200 VDC
11. Metalized Polyester,
11µF
+25
% 750 VDC peak
–0
12. Polyester-Foil,
1.8µF +16.2µF ±10%, 50 VDC
13. Metalized Polycarbonate
28µF ±5%, 40V RMS, 400 Hz;
0.27µF ±5%, 600 VDC;
0.47µF ±5%, 600 VDC
14. Polyester-Foil,
.057µF ±10%, 400 VDC, 115
VAC, 400 Hz
15. Metalized Paper-Polyester,
1.0µF ±10%, 2500 VDC
16. Polyester-Foil,
10.0µF ±10%, 30 VDC
17. Polyester-Foil,
0.20µF ±10%, 6000 VDC
18. Metalized Polycarbonate,
8µF ±10%, 120 V RMS, 400 Hz
19. Metalized Polyvinylidene Fluoride
80µF ±10%, 250 VDC
20. Polystyrene-Foil
0.864µF ±1%, 50 VDC;
0.115µF ±1%, 50 VDC;
0.735µF ±1%, 50 VDC;
0.098µF ±1%, 50 VDC
21. Metalized Polyvinylidene Fluoride
40µF
+15
%, 250 VDC
–25
22. Metalized Polysulfone,
60µF ±5%, 204 RMS
23. Metalized Paper-Polyester,
+20
30µF
–10
%, 3000 VDC
24. Metalized Polycarbonate,
30µF ±10%, 150 VAC, 400 Hz
25. Polycarbonate-Foil,
1.5µF ±5%, 330 VAC
26. Paper-Polyester-Foil
0.02µF ±10%, 10,000 VDC
27. Metalized-Polyester,
22µF ±5%, 1200 V
G-2
electronics
,
inc.
CUSTOM DESIGN
Various dielectrics used have been paper, paper-polyester,
polyester, polycarbonate, polysulfone, polystyrene,
polypropylene, TFE fluorocarbon, polyvinylidene fluoride,
and others. Capacitors have been produced using the discrete
foil and metalized electrode systems. Impregnants employed
include mineral oil, wax, Vitamin Q® silicone oil and various
so-called solid impregnants.
Capacitor housings include drawn and fabricated metal
shells in standard, rectangular, and special shapes, glass and
ceramic tubes, cast epoxy housings, molded housings,
plastic-film tubes, plastic-film wraps, and epoxy and resin
coatings. Where required, special mounting studs and brack-
ets have been furnished.
Capacitance tolerances to meet specific application needs
are available within the limits of the capacitor construction.
Units with matched capacitor sections, multiple sections of
different dielectrics, pulse forming networks, capacitor net-
works, capacitor standards, or other application specific
capacitors, are available to meet your circuit needs.
Special paper and film-type capacitors have been provided
with capacitance ratings from 0.0001µF to 2000µF and with
voltage ratings from 30 VDC to 30,000 VDC. Capacitors
have been supplied to operate over the temperature range of
-65°C to +200°C.
The rigid quality control exercised by Dearborn
Electronics Inc. on all its standard production is also applied
to custom-fabricated capacitors. Where necessary, special
testing is done to verify requirements, such as low dielectric
absorption, ultra-high insulation resistance, low dissipation
factor, stability under temperature cycling or under specified
environmental conditions, etc.
If you have need for special capacitor designs utilizing
paper or film dielectrics, Dearborn will be glad to make
recommendations on how best to meet your application
needs.
HIGH PERFORMANCE FILMS
Dearborn evaluates new dielectrics as they become avail-
able and has been a leader in the introduction of new film
capacitor types.
There are some specialty dielectrics available today which
offer significant improvement in electrical or physical char-
acteristics. They are as follows:
Polyvinylidene Floride
Polyethylene Naphthalate
Fluorene Polyester
(PVDF)
(PEN)
(FPE)
PVDF has a dielectric constant of 10 as compared with a
dielectric constant of approximately 3 for other commonly
used dielectrics. This higher dielectric constant and accept-
able dielectric strength results in a relative energy density
almost 2 times that of other dielectric systems. This film has
been successfully used in portable medical equipment and
spacecraft applications where improved energy density is of
paramount importance.
PEN has better high temperature resistance, higher
mechanical strength, and improved dimensional and chemi-
cal stability when compared to polyethylene terephthalate
(PET). As a result it is possible to produce PEN in
thicknesses below 1.0µm while retaining good handling
characteristics. The use of these sub-micron thicknesses
gives PEN a significant advantage where high capacitance
density is required at relatively low voltages.
FPE has an operating temperature of up to 300°C and is
one of the films that is part of the continuous research of
very high temperature films Dearborn participates in.
G-3
electronics
,
inc.
METALIZED MONOLITHIC POLYMER FILM CAPACITORS
TYPE 520P
Metal-Case
High Temperature
Metalized Monolithic Polymer
Capacitors
D +0.02 Max
Features—
• High Stability
• High Insulation Resistance
• Low Losses
• Low Dielectric Absorption
• Hermetically Sealed
L +0.031
±0.031
+1
1.63 0
L
±0.031
+1
1.63 0
+0.015
D 0.005
Major Applications:
Polycarbonate replacement in timing, and
integrating circuitry, high frequency coupling,
and other applications where severe environments
require hermetically sealed cases
PHYSICAL CHARACTERISTICS —
Construction:
Non-inductive wound metalized monolithic polymer
ELECTRICAL SPECIFICATIONS —
Operating Temperature:
-65°C to +125°C
Case:
Hermetically sealed metal enclosure with insulating sleeve
Capacitance Range:
0.01µF to 20µF
Lead Material:
Solder coated solid wire
Capacitance Tolerance:
±20%, ±10%, ±5%
Lead Wire Sizes:
Case Dia.
0.195
0.235
0.312 - 0.400
0.500 and over
Lead AWG
No. 24
No. 22
No. 20
No. 18
Dissipation Factor:
0.15% maximum @ 1kHz
Voltage Rating:
400 VDC to 1200 VDC
DC Voltage Test:
150% of rated voltage for 2 minutes
Lead Pull:
5 lbs. (2.3 KG) for one minute; no physical damage
Insulation Resistance:
Measured at rated VDC or 500V whichever is less following
a 2 minute charge
At +25°C,
100,000 Megohm-Microfarads,
need not exceed 200,000 Megohms
At +125°C,
1,000 Megohm-Microfarads,
need not exceed 2,000 Megohms
Lead Bend:
After three complete consecutive bends; no damage
Marking:
Dearborn trademark, type or catalog number, capacitance,
tolerance and voltage
G-4
electronics
,
inc.
METALIZED MONOLITHIC POLYMER FILM CAPACITORS
TYPE 520P
CATALOG NUMBERING SYSTEM
EXAMPLE:
520P
683
X9
600
S04
STYLE DESIGNATION
DC VOLTAGE RATING.
EXPRESSED IN VOLTS. SEE
STANDARD RATINGS CHARTS FOR VOLTAGE CODE.
CAPACITANCE TOLERANCE:
X0 = ± 20%; X9 = ± 10%; X5 = ± 5%
CAPACITANCE:
EXPRESSED IN PICOFARADS. THE FIRST TWO DIGITS ARE SIGNIFICANT
FIGURES; THE THIRD IS THE NUMBER OF ZEROS FOLLOWING.
SEE STANDARD RATINGS TABLES FOR CAPACITANCE CODE.
DEARBORN TYPE NUMBER.
IDENTIFIES THE BASIC CAPACITOR.
STANDARD RATINGS
Capacitance
µF
0.010
0.022
0.027
0.033
0.039
0.047
0.056
0.068
0.082
0.100
0.120
0.150
0.180
0.220
0.270
0.330
0.390
0.470
0.560
0.680
0.820
1.000
2.000
3.000
5.000
8.000
10.000
20.000
Code
103
223
273
333
393
473
563
683
823
104
124
154
184
224
274
334
394
474
564
684
824
105
205
305
505
805
106
206
Voltage
Code 400
400 VDC
D
L
0.193
0.813
0.193
0.813
0.193
0.813
0.235
0.813
0.235
0.813
0.235
0.813
0.312
0.813
0.193
0.813
0.235
0.813
0.312
0.813
0.400
0.813
0.312
1.375
0.400
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.400
1.375
0.562
1.375
0.500
1.375
0.500
1.875
0.750
1.375
0.750
1.875
1.000
1.875
1.000
2.375
Voltage
Code 600
600VDC
D
L
0.193
0.813
0.193
0.813
0.193
0.813
0.235
0.813
0.235
0.813
0.312
0.813
0.312
1.375
0.312
1.375
0.312
0.813
0.312
0.813
0.400
0.813
0.312
1.375
0.400
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.500
1.375
0.500
1.375
0.400
1.375
0.500
1.375
0.500
1.375
0.562
1.375
1.000
1.875
0.750
1.875
1.000
2.375
1.000
2.375
-
-
-
-
Voltage
Code 800
800VDC
D
L
0.193
0.813
0.235
1.375
0.235
1.375
0.312
1.375
0.312
0.813
0.312
0.813
0.312
1.375
0.312
1.375
0.235
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.400
1.375
0.400
1.375
0.400
1.375
0.500
1.375
0.562
1.875
0.500
1.375
0.670
1.875
0.500
1.875
0.750
1.875
0.562
1.875
1.000
1.875
1.000
2.375
1.000
2.375
-
-
-
-
-
-
Voltage
Code 1K2
1200 VDC
D
L
-
-
0.235
1.375
0.235
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.312
1.375
0.400
1.375
0.400
1.375
0.400
1.375
0.500
1.375
0.500
1.375
0.562
1.375
0.500
1.875
0.500
1.375
0.562
1.875
0.670
1.875
0.670
1.875
0.670
1.875
0.750
1.875
0.750
2.375
1.000
2.375
-
-
-
-
-
-
-
-
-
-
Additional capacitance values, voltages, and tolerances are available upon request.
G-5
Making friends through disassembly
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