S221K25Y5PP63K5R Vishay, S221K25Y5PP63K5R Datasheet - Page 7

• Manufacturer Part Number: S221K25Y5PP63K5R
• Description: CAP CER 220PF 2000V Y5P 10% DISC
• Manufacturer: Vishay
• Series: Sr

Specifications of S221K25Y5PP63K5R

• Capacitance: 220pF
• Voltage - Rated: 2000V (2kV)
• Tolerance: ±10%
• Temperature Coefficient: Y5P (B)
• Mounting Type: Through Hole
• Operating Temperature: -30°C ~ 85°C
• Features: High Voltage
• Applications: General Purpose
• Package / Case: Radial - Disc
• Size / Dimension: 0.256" Dia (6.5mm)
• Thickness: 4.00mm Max
• Lead Spacing: 0.197" (5.00mm)
• Lead Style: Kinked
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Ratings: -
• Other names: 1271PH

General Information
Vishay BCcomponents
CAPACITANCE “AGING” OF CERAMIC CAPACITORS
Following the final heat treatment, all class 2 ceramic capacitors reduce their capacitance value. According to logarithmic law,
this is due to their special crystalline construction. This change is called “aging”. If the capacitors are heat treated (for example
when soldering), the capacitance increases again to a higher value deaging, and the aging process begins again.
Note
• The level of this deaging is dependent on the temperature and the duration of the heat; an almost complete deaging is achieved at 150 °C
REFERENCE MEASUREMENT
Due to aging, it is necessary to quote an age for reference measurements which can be related to the capacitance with fixed
tolerance. According to EN 130700, this time period is 1000 h.
In order to avoid the influence of aging, it is important to deage the capacitors before stress-testing. The following procedure is
adopted (see also EN 130700):
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in one hour. These conditions also form the basis for reference measurements when testing. The capacitance change per time decade
(aging constant) differs for the various types of ceramic, but typical values can be taken from the equations below.
k =
C 11 x log 10 (t2/t1)
100 x (C 11 - C 12 )
C12 = C11 x (1 - k/100 x log10 [t2/t1])
For technical questions, contact:
Ceramic Disc, RFI and Safety Capacitors
Deaging at 125 °C, 1 h
Storage for 24 h at normal climate temperature
Initial measurement
Stress
Deaging at 125 °C, 1 h
Storage for 24 h at normal climate temperature
Final measurement
t1, t2
C11, C12 = capacitance values for the times t1, t2
k = aging constant (%)
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= measuring time point (h)
Document Number: 28536
Revision: 07-Jan-10