VR25 Datasheet, PDF (1/7 Pages) Vishay Siliconix – High Ohmic/High Voltage Resistors

VR25
Vishay BCcomponents
High Ohmic/High Voltage Resistors
A metal glazed film is deposited on a high grade ceramic body.
After a helical groove has been cut in the resistive layer, tinned
electrolytic copper wires are welded to the end-caps. The
resistors are coated with a light blue lacquer which provides
FEATURES
• High pulse loading capability
• Small size
• Lead (Pb)-free solder contacts
• Pure tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
• Compatible with "Restriction of the use of Hazardous
Substances" (RoHS) directive 2002/95/EC (issue 2004)
APPLICATIONS
• Where high resistance, high stability and high reliability at
high voltage are required
• High humidity environment
• White goods
• Power supplies
electrical, mechanical, and climatic protection.
The encapsulation is resistant to all cleaning solvents in
accordance with “MIL-STD 202E, method 215” and
“IEC 60068-2-45”.
TECHNICAL SPECIFICATIONS
DESCRIPTION
Resistance range¹⁾
Resistance tolerance and series:
100 kΩ to 15 MΩ
15 MΩ to 22 MΩ
Maximum dissipation at T_amb = 70 °C
Thermal resistance, R_th
Temperature coefficient
Maximum permissible voltage:
DC
RMS
Dielectric withstanding voltage of the insulation for 1 minute
Basic specifications
Climatic category (IEC 60068)
Stability after:
load (1000 hours)
accelerated damp heat test (6 days)
long term damp heat test (56 days)
Noise
Note
1. Ohmic values (other than resistance range) are available on request.
VALUE
100 kΩ to 22 MΩ
± 1 %: E24/E96 series; ± 5 %: E24 series
± 5 %: E24 series; ± 10 %: E12 series
0.25 W
140 K/W
≤ ± 200 × 10^-6/K
1600 V
1150 V
700 V
IEC 60115-1B
55/155/56
∆R/R max.: ± 1.5 % + 0.1 Ω
∆R/R max.: ± 1.5 % + 0.1 Ω
∆R/R max.: ± 1.5 % + 0.1 Ω
max. 5 µV/V
12NC INFORMATION
• The resistors have a 12-digit numeric code starting with
2322 241
• The subsequent:
first digit for 1 % tolerance products (E24 and E96 series)
or 2 digits for 5 % (E24 series) and 10 % (E12 series)
indicate the resistor type and packing.
• The remaining digits indicate the resistance value:
– The first 3 digits for 1 % or 2 digits for 5 and 10 %
tolerance products indicate the resistance value.
– The last digit indicates the resistance decade.
Last Digit of 12NC Indicating Resistance Decade
RESISTANCE DECADE
100 to 976 kΩ
1 to 9.76 MΩ
≥ 10 MΩ
LAST DIGIT
4
5
6
12NC Example
The 12NC for a VR25, resistor value 7.5 MΩ, 5 % tolerance,
supplied on a bandolier of 1000 units in ammopack, is:
2322 241 13755.
www.vishay.com
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For technical questions contact: [e-mail]
Document Number: 28732
Revision: 06-Dec-05