VR37
Vishay BCcomponents
High Ohmic (up to 33 M)/
High Voltage (up to 3.5 kV) Resistors
FEATURES
Lead (Pb)-free solder contacts
These resistors meet the safety requirements
of:
UL1676 (510 k to 11 M); File No: E171160
REG.-Nr. 40002857
IEC 60065
EN60065
VDE 0860 (Germany)
CQC (China)
High pulse loading capability (10 kV)
Small size (0309)
Pure tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
Compatible with Restriction of the use of Hazardous
A metal glazed film is deposited on a high grade ceramic
Substances (RoHS) directive 2002/95/EC (issue 2004)
body. After a helical groove has been cut in the resistive
layer, tinned electrolytic copper wires are welded to the
APPLICATIONS
end-caps. The resistors are coated with a light blue lacquer
Where high resistance, high stability and high reliability at
which provides electrical, mechanical, and climatic
high voltage are required
protection.
The encapsulation is resistant to all cleaning solvents in
Safety component in combination with high voltage
accordance with MIL-STD202E, method215 and
White goods
IEC 60068-2-45.
High humidity environment
Power supplies
TECHNICAL SPECIFICATIONS
DESCRIPTION VALUE
(1)
Resistance range 100 k to 33 M
1 %: E24/E96 series;
Resistance tolerance and series
5 %: E24 series
Maximum dissipation at T =70 C0.5W
amb
Thermal resistance, R 120 K/W
th
-6
Temperature coefficient 200 x 10 /K
Maximum permissible voltage:
DC 3500 V
RMS 2500 V
Dielectric withstanding voltage of the insulation for 1 minute 700 V
Basic specifications IEC 60115-1B
Safety requirements
UL1676 (510 k to 11 M); EN60065; VDE 0860; CQC
Climatic category (IEC 60068) 55/155/56
Stability after:
load (1000 hours) R max.: (1.5 % R+0.1 )
accelerated damp heat test (6 days) R max.: (1.5 % R+0.1 )
long term damp heat test (56 days) R max.: (1.5 % R+0.1 )
Noise max. 2.5 V/V
Notes:
(1)
Ohmic values (other than resistance range) are available upon request.
www.vishay.com For technical questions, contact: ff3dresistors@vishay.com Document Number: 28733
182 Revision: 20-Sep-07VR37
High Ohmic (up to 33 M)/
Vishay BCcomponents
High Voltage (up to 3.5 kV) Resistors
12NC INFORMATION
The resistors have a 12-digit numeric code starting with Last Digit of 12NC Indicating Resistance Decade
2322 242.
RESISTANCE DECADE LAST DIGIT
The subsequent:
100 to 976 k 4
first digit for 1 % tolerance products (E24 and E96 series)
1to9.76M 5
or 2digits for 5 % (E24series) indicate the resistor type
10 M 6
and packaging
The remaining digits indicate the resistance value:
12NC Example
The first 3 digits for 1 % or 2 digits for 5 % tolerance
The 12NC for a VR37, resistor value 7.5 M, 5 % tolerance,
products indicate the resistance value
supplied on a bandolier of 1000units in ammopack, is:
The last digit indicates the resistance decade
2322 242 13755.
12NC - resistor type and packaging
ORDERING CODE 2322 242 .....
TAPE
TOL. BANDOLIER IN AMMOPACK BANDOLIER ON REEL
TYPE WIDTH
(%)
1000 5000
(mm)
units units
1 8.... 6....
VR37 52
5 13... 23...
PART NUMBER
PART NUMBER: VR37000001503JA100
VR 3 7000001503J A10 0
(1)
PACKAGING
MODEL/SIZE SPECIAL CHARACTER TCR/MATERIAL VALUE TOLERANCE SPECIAL
VR37000 0 = neutral 0 = standard 3 digit value F = 1 % A1 The 2 digits
J = 5 %
Z = value overflow 1 digit multiplier R5 are used for
(Special) Multiplier: all special
3
parts.
3 = *10
4 00 = standard
4 = *10
5
5 = *10
PRODUCT DESCRIPTION: VR37 5 % A1 150K
VR37 5 % A1 150K
(1)
MODEL/SIZE TOLERANCE PACKAGING RESISTANCE VALUE
VR37 1 % A1 150K = 150 k
5 % R5 8M2 = 8.2 M
Note:
(1)
Please refer to table PACKAGING.
The PART NUMBER is shown to facilitate the introduction of a unified part numbering system for ordering products.
PACKAGING
CODE PIECES DESCRIPTION MODEL/SIZE
A1
1000 Bandolier in ammopack straight leads 52 mm
VR37
R5
5000 Bandolier on reel straight leads 52 mm
Document Number: 28733 For technical questions, contact: ff3dresistors@vishay.com www.vishay.com
Revision: 20-Sep-07 183