VR25
Vishay BCcomponents
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
FEATURES
•
R
max.
= 22 MΩ;
U
max.
= 1600 V
DC
•
High pulse loading capability (up to 7 kV)
•
Small size (0207)
•
Lead (Pb)-free solder contacts
•
Pure tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
•
Compliant to RoHS directive 2002/95/EC
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.
•
AEC-Q200 qualified
APPLICATIONS
•
Where high resistance, high stability and high reliability at
high voltage are required
•
High humidity environment
•
White goods
•
Power supplies
TECHNICAL SPECIFICATIONS
DESCRIPTION
Resistance Range
(1)
Resistance Tolerance and Series:
100 kΩ to 15 MΩ
15 MΩ to 22 MΩ
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
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 on request.
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. 5 µV/V
1600 V
1150 V
700 V
IEC 60115-1
55/155/56
± 1 %: E24/E96 series; ± 5 %: E24 series
± 5 %: E24 series; ± 10 %: E12 series
0.25 W
140 K/W
≤
± 200 ppm/K
VALUE
100 kΩ to 22 MΩ
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Document Number: 28732
Revision: 14-Oct-09
VR25
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
PART NUMBER
PART NUMBER: VR25000001503JA100
Vishay BCcomponents
V
MODEL/SIZE
VR25000
R
2
5
0
0
0
0
0
1
5
0
3
J
A
1
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
VALUE
3 digit value
1 digit multiplier
MULTIPLIER
3
= *10
3
4
= *10
4
5
= *10
5
TOLERANCE
F
=±1%
J
=±5%
K
= ± 10 %
PACKAGING
(1)
A5
A2
A1
R5
N4
PRODUCT DESCRIPTION: VR25 5 % A1 150K
VR25
MODEL/SIZE
VR25
5%
TOLERANCE
±
1
%
±
5
%
±
10
%
A1
PACKAGING
(1)
A5
A2
A1
R5
N4
150K
RESISTANCE VALUE
150K
= 150 kΩ
8M2
= 8.2 MΩ
Notes
(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
AMMO PACK
MODEL
TAPING
PIECES
2000
Axial, 26 mm
5000
VR25
Axial, 52 mm
Radial
1000
4000
A1
N4
-
-
-
-
A5
5000
R5
CODE
A2
PIECES
-
CODE
-
REEL
DIMENSIONS
L
1
Ø
d
Ø
D
L
2
Outline
DIMENSIONS
- resistor type and relevant physical dimensions
TYPE
VR25
Ø D
max.
2.5
L
1 max.
6.5
L
2 max.
7.5
Ød
0.58 ± 0.05
Document Number: 28732
Revision: 14-Oct-09
For technical questions, contact:
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197
VR25
Vishay BCcomponents
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
P
2
PRODUCTS WITH RADIAL LEADS
P
H
1
H
H
0
L
1
L
W
0
W
F
P
0
P
1
D
0
DIMENSIONS - RADIAL TAPING
SYMBOL
PARAMETER
P
Pitch of components
P
0
Feed-hole pitch
Feed-hole centre to lead at topside at the tape
P
1
P
2
Feed-hole center to body center
F
Lead-to-lead distance
W
Tape width
W
0
Minimum hold down tape width
H
1
Component height
Lead wire clinch height
H
0
H
Height of component from tape center
D
0
Feed-hole diameter
L
Maximum length of snipped lead
Minimum lead wire (tape portion) shortest lead
L
1
Note
• Please refer document number 28721 “Packaging” for more detail
VALUE
12.7
12.7
3.85
6.35
4.8
18.0
5.5
29
16.5
19.5
4.0
11.0
2.5
TOLERANCE
± 1.0
± 0.2
± 0.5
± 1.0
+ 0.7/- 0
± 0.5
-
Max.
± 0.5
±1
± 0.2
-
-
UNIT
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
MASS PER UNIT
TYPE
VR25 52 mm
VR25 26 mm
MASS
(mg)
212
148
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.
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).
FUNCTIONAL PERFORMANCE
PRODUCT CHARACTERIZATION
Standard values of nominal resistance are taken from the E96/E24/E12 series for resistors with a tolerance of ± 1 %, 5 % or
10 %. The values of the E96/E24/E12 series are in accordance with IEC 60063.
LIMITING VALUES
TYPE
DC
1600
LIMITING VOLTAGE
(1)
U
max.
RMS
1150
LIMITING POWER
P
70
(W)
0.25
VR25
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
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Document Number: 28732
Revision: 14-Oct-09
VR25
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
Vishay BCcomponents
20
The power that the resistor can dissipate depends
on the operating temperature.
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
(M
Ω)
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/min (drift
ΔR/R ≤
2 %)
Derating
Pulse Loading Capability
50
Δ
T
(K)
40
∆
T
(K)
50
40
30
30
5 mm
10 mm
15 mm
20
20
10
10
0
0
0.1
0.2
P
(W)
0.3
0
0
0.1
0.2
P
(W)
0.3
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
Document Number: 28732
Revision: 14-Oct-09
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VR25
Vishay BCcomponents
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 tests 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.
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
4.16
4.16.2
4.16.3
4.16.4
4.17
IEC
60068-2-
TEST
METHOD
21 (Ua1)
21 (Ub)
21 (Uc)
20 (Ta)
TEST
Robustness of terminations:
Tensile all samples
Bending half number
of samples
Torsion other half
of samples
Solderability
PROCEDURE
REQUIREMENTS
Ø 0.6 mm; load 10 N; 10 s
Ø 0.6 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
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
5 days; 55
°C;
95 % to 100 % RH
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 cycles;
5 s ON and 45 s OFF
Steps of: 5/10/16/25/40 x
P
70
duration
5 min
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
Solderability
(after aging)
Resistance to
soldering heat
Rapid change of temperature
Bump
Vibration
Climatic sequence:
Dry heat
Damp heat (accelerated) 1st
cycle
Cold
Low air pressure
Damp heat (accelerated)
remaining cycles
Damp heat
(steady state)
Endurance
Temperature coefficient
Voltage proof on insulation
Noise
Insulation resistance
Good tinning (≥ 95 % covered); no
damage
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)
4.18
4.19
4.20
4.22
4.23
4.23.2
4.23.3
4.23.4
4.23.5
4.23.6
4.24
4.25.1
4.8
4.7
4.12
4.6.1.1
20 (Tb)
14 (Na)
29 (Eb)
6 (Fc)
2 (Ba)
30 (Db)
1 (Aa)
13 (M)
30 (Db)
78 (Cab)
R
ins
min.: 10
3
MΩ
ΔR
max.: ±
(1.5
%
R
+ 0.1
Ω)
ΔR
max.: ±
(1.5
%
R
+ 0.1
Ω)
ΔR
max.: ±
(1.5
%
R
+ 0.1
Ω)
≤
± 200 ppm/K
No breakdown
Max. 5 µV/V
R
ins
min.: 10
4
MΩ
ΔR
max.:
± (2.0
% R + 0.05
Ω)
4.13
Short time overload
Active flammability
“cheese-cloth test”
4.26
No flaming of gauze cylinder
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Document Number: 28732
Revision: 14-Oct-09
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