ROE ROEDERSTEIN, EYV, special low ESR Audio Capacitor, 100uF 385V, Lot of 5

Description

This auction is for
a
Lot of
five
pieces
:
> only US $ 4.80 each !
ROE
ROE
DERSTEIN
Made in Germany
*
E
YV
series
(DIN
41238
)
*
Very low ESR
*
" LL
" Grade
(Very Long Life Time)
*
IEC - Type
1
*
ct (-10% / +20%)
Case size Ø
30
mm X 40mm,
(loose - boxed)
High Quality Electrolytic Audio Capacitors
Roederstein  EYV  series
"for natural tone and pure sound"
Ideal for Tube Audio Applications !       Highest Quality !
Very low ESR !
Very Long Life Time !
manufacturer:
Roederstein ROE
,
made in Germany
construction / typ:
Electrolytic Audio Capacitor
capacitance value:
100 µF
voltage rating:
385 volts
capacitance tolerance:
- 10% / + 20%
Roederstein  EYV  series
"
f
or natural tone and pure sound"
please note:
Printed wiring pin version
1 = Positive terminal
5 = Negative terminal
Pin numbers 2, 3 and 4 (if present) must be free from the electrical circuit.
As it is usual for quality capacitors from the good old days these are relatively large and "heavy" types
ESR
(ESR = equivalent series resistance)
A
simple and very s
h
ort explanation, from my opinion, wat esr is:
I think of ESR as an unwanted (usually) resistor in series with a (more or les) perfect capacitor.
Some that are into choosing capacitors to voice their audio systems (in the audio signal path), may have a preference for one capacitor over another and ESR may play a roll.
In general, all other things being equal, and they usually are not, in any case in power supply design the lower the ESR the better.
The places where ESR bites you are at power filter caps, output caps, especially speaker driving capacitors, and high frequency switching power supplies.
It's a big deal when there's any substantial ripple voltage across the cap, because the ESR makes heat inside the cap. In some applications, a higher ESR cap can literally cook itself with ripple current, which goes up with the square of the ripple current. It's not exactly proportional to frequency, but it does change a bit with frequency, especially since the internal inductance keeps current from spreading all over the plate of the capacitor at very high frequencies.
Audio caps are optimized for Linearity and low Dielectric-Absorbtion - there are some low-ESR audiophile caps like
Nichicon Muse KZ ®
.
The inter-electrode spacer plays an important role in audio caps - various materials including silk have been tried. The foil etching and electrolyte composition also differs in audio caps. Leads need to be copper or other non-magnetic material on audiophile caps - any trace of iron, nickel or cobalt in the leads or plating is a strict no-no for audio caps in the signal path; it contributes unwanted inductance as well as EMI/RFI pickup.
Cap makers don't specify ESR, usually. They specify maximum ripple current, which is kinda the same thing, but it forces back on you to figure out what your ripple current is. That
all is
not always simple
...
from the datasheet:
FEATURES                                                                                                   APPLICATIONS
• Polarized aluminum electrolytic capacitors, non-solid electrolyte           • Audio/video  systems, Computer, and telecommunication
• Very low ESR and high ripple current capability                                     • Smoothing and filtering, Coupling
• Very long useful life: 15 000 h at 85 °C                                                   • Energy storage in pulse systems
• High resistance to shock and vibration                                                    • Standard and switched mode power supplies
• Charge/discharge proof
• Vibration and shock resistant
• Large types, cylindrical aluminum case, insulated
• Provided with keyed polarity
MAIN SPECIFICATIONS
Useful Life at 40°C and
1.4 x IR applied
:
20
0000 hours
Category Temperature Range °C:               - 40 to
+ 85
Capacitance Tolerance %:                           - 10 / +20
ELECTRICAL CHARACTERISTICS AND DIMENSIONS
UR (
V
):                                                385 V.
CR 100 Hz (
μF
):                                100 µF
NOMINAL CASE SIZE Ø D x L:      30 x 40 (mm)
WEIGHT (Gramm):                            40
IR, 100 Hz at 85 °C (
A
):                    0.84
IR, 20 kHz at 70 °C (
A
):                    1.59
IL1,  1 min (
mA
):                                0.23
IL5,  5 min (
mA
):
0.08
ESR, 100 Hz (
mΩ
):                         1
1
75
Z,  10 kHz (
mΩ
):                                950
PARAMETER
Voltage
Surge voltage      Us = 1.1 x UR
Reverse voltage   Urev = 1 V
Current
Leaka
g
e current
After 1 minute at UR IL1 = 0.006 CR x UR + 4 µA
After 5 minutes at UR IL5 = 0.002 CR x UR + 4 µA
Inductance
Equivalent series inductance (ESL)
Case Ø D = 30 and 35 mm max. 30 nH
Printed wiring pin version
1 = Positive terminal
5 = Negative terminal
Pin numbers 2, 3 and 4 (if present) must be free from the electrical circuit.
great sounding NOS vintage audio capacitors
I do not profit from inflated postage costs! Postage prices are relative to the weight of the parcel and level of insurance, please see
http://www.deutschepost.de/dpag?tab=1&skin=hi&check=yes&lang=de_EN&xmlFile=828
for the pricing Information of "Deutsche Post DHL Group".
I will not charge any addional costs for packing materials etc..
* secure packaging in a small box
* shipping via registered  Air Mail, "intern. signed for"
* worldwide US $ 8.00 / europe US $ 4.50
* +
US $ 3.00 "intern. signed for"
insured
* combined shipping discount,
(depending on the total weight !)
Since "eBay" reckons that sellers are responsible for making sure their goods are delivered safely to the buyers,
Shipping solely via registered Mail
Product
Max. Dimensions
Weight
Europe
World
Maxiletter International
Minimum dimensions:
L: 14 cm
W: 9 cm
Maximum dimensions:
L+W+H: 90 cm
and no side should
exceed 60 cm
up to
500 g
EUR 3.40
EUR 6.00
501-1,000 g
EUR 6.00
EUR 12.00
1,001-2,000 g
EUR 14.00
EUR 24.00
Einschreiben International
(Registered items International / "intern. signed for") ensures that shipments are delivered to the recipient or authorized recipient worldwide only with signature and provides you legally-binding documentation at posting of your consignment by "Deutsche Post"
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