VR68
Vishay BCcomponents
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
FEATURES
•
R
max.
= 68 MΩ;
U
max.
= 10 000 V
DC
•
These resistors meet the safety requirements of:
UL1676 (510 kΩ to 11 MΩ); File No: E171160
IEC 60065, clause 14.1.a)
DIN EN 60065, clause 14.1.a)
VDE 0860, clause 14.1.a)
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
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 IEC 60068-2-45.
•
Compliant to RoHS directive 2002/95/EC
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
Resistance Range
(1)
Resistance Tolerance and Series
Rated Dissipation,
P
70
Thermal Resistance,
R
th
Temperature Coefficient
Maximum Permissible Voltage
U
max.
:
DC
RMS
Dielectric Withstanding Voltage of the Insulation for 1 Min
Basic Specifications
Safety Requirements
Climatic Category (IEC 60068-1)
Stability After:
Load (1000 h,
P
70
)
Long Term Damp Heat Test (56 Days)
Soldering (10 s, 260 °C)
Noise
Note
(1)
Ohmic values (other than resistance range) are available upon request
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Document Number: 28734
Revision: 05-Oct-09
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
10 000 V
7000 V
700 V
IEC 60115
UL1676 (510 kΩ to 11 MΩ); DIN EN 60065, IEC 60065, clause 14.1.a);
VDE 0860, clause 14.1.a), CQC
55/155/56
VALUE
100 kΩ to 68 MΩ
± 1 %: E24/E96 series;
± 5 %: E24 series
1W
70 K/W
≤
± 200 ppm/K
VR68
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
PART NUMBER
PART NUMBER: VR68000001503JAC00
Vishay BCcomponents
V
MODEL/SIZE
VR68000
R
6
8
0
0
0
0
0
1
VALUE
5
0
3
J
A
C
0
0
SPECIAL
The 2 digits
are used for all
special parts.
00
= Standard
VARIANT
0
= Neutral
Z
= Value overflow
(Special)
TCR/MATERIAL
0
= Standard
TOLERANCE
F
=±1%
J
=±5%
PACKAGING
(1)
AC
RD
3 digit value
1 digit multiplier
MULTIPLIER
3
= *10
3
4
= *10
4
5
= *10
5
PRODUCT DESCRIPTION: VR68 5 % AC 150K
VR68
MODEL/SIZE
VR68
5%
TOLERANCE
±
1
%
±
5
%
AC
PACKAGING
(1)
AC
RD
150K
RESISTANCE VALUE
150K
= 150 kΩ
8M2
= 8.2 MΩ
Notes
(1)
Please refer to table PACKAGING for details
• The PART NUMBER is shown to facilitate the introduction of a unified part numbering system for ordering products
PACKAGING
AMMO PACK
MODEL
VR68
TAPING
PIECES
Axial, 66 mm
500
CODE
AC
PIECES
750
CODE
RD
REEL
DIMENSIONS
L
1
Ød
ØD
L
2
Outline
DIMENSIONS
- resistor type and relevant physical dimensions
TYPE
VR68
Ø D
max.
6.8
L
1 max.
18.0
L
2 max.
19.0
Ø
d
0.78 ± 0.05
MASS PER UNIT
TYPE
VR68
MASS
(mg)
169
MARKING
The nominal resistance and tolerance are marked on the
resistor using four or five colored bands in accordance with
IEC 60062, marking codes for resistors and capacitors.
Yellow and grey are used instead of gold and silver because
metal particles in the lacquer could affect high-voltage
properties.
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Document Number: 28734
Revision: 05-Oct-09
For technical questions, contact:
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VR68
Vishay BCcomponents
OUTLINES
The length of the body (L
1
) is measured by inserting the
leads into holes of two identical gauge plates and moving
these plates parallel to each other until the resistor body is
clamped without deformation (IEC 60294).
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
FUNCTIONAL PERFORMANCE
PRODUCT CHARACTERIZATION
Standard values of nominal resistance are taken from the
E96/E24/E12 series for resistors with a tolerance of ± 1 % or
5 %. The values of the E96/E24 series are in accordance
with IEC 60063.
LIMITING VALUES
TYPE
DC
VR68
10 000
LIMITING VOLTAGE
(1)
U
max.
RMS
7000
1.0
LIMITING POWER
P
70
(W)
Notes
(1)
The maximum voltage that may be continuously applied to the resistor element, see IEC 60115-1
• The maximum permissible hot-spot temperature is 155 °C
The power that the resistor can dissipate depends on the operating
temperature.
20
^
U
max.
(kV)
P
max.
(%
P
rated
)
100
10
8
50
6
0
- 55
0
50
70
100
155
T
amb
(°C)
4
10
- 2
10
- 1
1
10
R
n
(MΩ)
10
2
Maximum dissipation (P
max.
) in percentage of rated power as a
function of the ambient temperature (T
amb
)
Maximum allowed peak pulse voltage in accordance with
IEC 60065, 14.1.a)”; 50 discharges from a 1 nF capacitor
charged to
U
max.
; 12 discharges/minute (drift
ΔR/R ≤
2 %)
Derating
Pulse Loading Capability
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Document Number: 28734
Revision: 05-Oct-09
VR68
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
Vishay BCcomponents
80
∆
T
(K)
60
50
∆
T
(K)
40
10 mm
15 mm
30
40
20
20
10
0
0
0
0.4
0.8
P
(W)
1.2
0
0.4
0.8
P
(W)
1.2
Hot-spot temperature rise (ΔT) as a function of dissipated power
Temperature rise (ΔT) at the lead end (soldering point) as a function
of dissipated power at various lead lengths after mounting
Application Information
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with
IEC 60115-1 specification, category LCT/UCT/56 (rated
temperature range: Lower Category Temperature, Upper
Category Temperature; damp heat, long term, 56 days).
The tests are carried out in accordance with IEC 60068-2-xx.
Test method under standard atmospheric conditions
according to IEC 60068-1, 5.3.
In the Test Procedures and Requirements table the test
and requirements are listed with reference to the relevant
clauses of IEC 60115-1 and IEC 60068-2-xx test methods. A
short description of the test procedure is also given. In some
instances deviations from the IEC recommendations were
necessary for our method of specifying.
All soldering tests are performed with mildly activated flux.
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
4.16
4.16.2
4.16.3
4.16.4
4.17
21 (Ua1)
21 (Ub)
21 (Uc)
20 (Ta)
IEC
60068-2-
TEST
METHOD
TEST
PROCEDURE
REQUIREMENTS
Robustness of terminations:
Tensile all samples
Bending half number
of samples
Torsion other half
of samples
Solderability
Ø 0.8 mm; load 10 N; 10 s
Ø 0.8 mm; load 5 N; 4 x 90°
3 x 360° in opposite directions
2 s; 235
°C:
Solder bath method; SnPb40
3 s; 245
°C:
Solder bath method; SnAg3Cu0.5
8 h steam or 16 h 155 °C;
leads immersed 6 mm;
for 2 s at 235
°C;
solder bath (SnPb40)
for 3 s at 245
°C;
solder bath (SnAg3Cu0.5)
method
Number of failures < 10 x 10
-6
Number of failures < 10 x 10
-6
No damage
ΔR
max.: ± (0.5 %
R
+ 0.05
Ω)
Good tinning (≥ 95 % covered);
no damage
Good tinning (≥ 95 % covered);
no damage
Solderability
(after aging)
Document Number: 28734
Revision: 05-Oct-09
For technical questions, contact:
filmresistorsleaded@vishay.com
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211
VR68
Vishay BCcomponents
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
4.18
4.19
4.20
4.22
4.23
4.23.2
4.23.3
4.23.4
4.23.5
4.24
4.25.1
4.8
4.7
4.12
4.6.1.1
4.13
2 (Ba)
30 (Db)
1 (Aa)
13 (M)
78 (Cab)
IEC
60068-2-
TEST
METHOD
20 (Tb)
14 (Na)
29 (Eb)
6 (Fc)
TEST
PROCEDURE
thermal shock: 10 s; 260
°C;
3 mm from body
30 min at - 55
°C
and
30 min at + 155
°C;
5 cycles
3 x 1500 bumps in 3 directions; 40 g
Frequency 10 Hz to 500 Hz;
displacement 1.5 mm or acceleration 10 g;
3 directions; total 6 h (3 x 2 h)
16 h; 155
°C
24 h; 55
°C;
90 % to 100 % RH
2 h; - 55
°C
2 h; 8.5 kPa; 15 °C to 35
°C
56 days; 40
°C;
90 % to 95 % RH;
dissipation 0.01
P
70
;
limiting voltage
U
= 100 V
DC
1000 h at 70
°C;
P
70
or
U
max.
Between - 55
°C
and + 155
°C
U
RMS
= 700 V during 1 min; V-block method
IEC 60195
U
= 500 V
DC
during 1 min; V-block method
Room temperature;
dissipation 6.25 x
P
70
(voltage not more than
2 x limiting voltage; 10 000 V max.);
10 cycles; 5 s ON and 45 s OFF
ΔR
max.: ± (1.5 %
R
+ 0.1
Ω)
ΔR
max.: ± (1.5 %
R
+ 0.1
Ω)
≤
± 200 ppm/K
No breakdown
Max. 2.5 µV/V
R
ins
min.: 10
4
MΩ
ΔR
max.: ± (2.0 %
R
+ 0.05
Ω)
REQUIREMENTS
Resistance to
soldering heat
Rapid change of temperature
Bump
Vibration
Climatic sequence:
Dry heat
Damp heat (accelerated)
1
st
cycle
Cold
Low air pressure
Damp heat
(steady state)
Endurance
Temperature coefficient
Voltage proof on insulation
Noise
Insulation resistance
Short time overload
ΔR
max.: ± (0.5 %
R
+ 0.05
Ω)
ΔR
max.: ± (0.5 %
R
+ 0.05
Ω)
No damage
ΔR
max.: ± (0.5 %
R
+ 0.05
Ω)
No damage
ΔR
max.: ± (0.5 %
R
+ 0.05
Ω)
12NC INFORMATION FOR HISTORICAL CODING REFERENCE
•
The resistors have a 12-digit numeric code starting with
2322 244
•
The subsequent:
first digit for 1 % tolerance products (E24 and E96 series)
or 2 digits for 5 % (E24 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 % tolerance
products indicate the resistance value
- The last digit indicates the resistance decade
Last Digit of 12NC Indicating Resistance Decade
RESISTANCE DECADE
100 kΩ to 976 kΩ
16 MΩ to 9.76 MΩ
≥
10 MΩ
LAST DIGIT
4
5
6
12NC Example
The 12NC for a VR68, resistor value 7.5 MΩ, 5 % tolerance,
supplied on a bandolier of 500 units in ammopack, is:
2322 244 13755.
12NC
- Resistor type and packaging
2322 244 .....
TYPE
TAPE
WIDTH
(mm)
TOL.
(%)
BANDOLIER IN AMMOPACK
500
units
8....
13...
BANDOLIER ON REEL
750
units
6....
23...
VR68
66.7
±1
±5
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Document Number: 28734
Revision: 05-Oct-09
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