VR68
Vishay BCcomponents
High Ohmic (up to 68 MΩ)/High Voltage (up to 10 kV) Resistors
FEATURES
• Lead (Pb)-free solder contacts
•
These resistors meet the safety requirements of:
“UL1676” (510 kΩ to 11 MΩ); File No: E171160
“IEC 60065”
“EN60065”
REG.-Nr. 40003697
“VDE 0860” (Germany)
“CQC” (China)
• High pulse loading capability (10 kV)
• Small size (0718)
• 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)
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 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”.
APPLICATIONS
• Where high resistance, high stability and high reliability at
high voltage are required
• Safety component in combination with high voltage
• Picture tubes
• High voltage bleeders
• Cascade switches
TECHNICAL SPECIFICATIONS
DESCRIPTION
VALUE
Resistance range1)
100 kΩ to 68 MΩ
1 %: E24/E96 series;
5 %: E24 series
Resistance tolerance and series
Maximum dissipation at Tamb = 70 °C
Thermal resistance, Rth
Temperature coefficient
Maximum permissible voltage:
DC
1 W
70 K/W
≤
200 × 10-6/K
10 000 V
7000 V
700 V
RMS
Dielectric withstanding voltage of the insulation for 1 minute
Basic specifications
IEC 60115-1B
UL1676 (510 kΩ to 11 MΩ); EN60065; VDE 0860; CQC
55/155/56
Safety requirements
Climatic category (IEC 60068)
Stability after:
load (1000 hours)
ΔR max.: (1.5 % R + 0.1 Ω)
ΔR max.: (1.5 % R + 0.1 Ω)
ΔR max.: (1.5 % R + 0.1 Ω)
max. 2.5 µV/V
accelerated damp heat test (6 days)
long term damp heat test (56 days)
Noise
Note
1. Ohmic values (other than resistance range) are available upon request.
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For technical questions, contact: ff3dresistors@vishay.com
Document Number: 28734
Revision: 07-May-07