VR25
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High Ohmic / High Voltage Metal Glaze Leaded 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 electrical, mechanical, and climatic
protection.
FEATURES
• AEC-Q200 qualified
• High pulse loading capability (maximum 7 kV)
• Radial version available
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912
APPLICATIONS
• Lighting ballast
• High humidity environment
• White goods
• Power supplies
Note
(1) Ohmic values (other than resistance range) are available on request.
TECHNICAL SPECIFICATIONS
DESCRIPTION VR25
Imperial size 0207
Resistance range (1) 100 k to 22 M
Resistance tolerance ± 10 %; ± 5 %; ± 1 %
Temperature coefficient ± 200 ppm/K
Rated dissipation, P70 0.25 W
Operating voltage, Umax. AC/DC 1600 V
Operating temperature range -55 °C to +155 °C
Peak permissible film temperature 155 °C
Thermal resistance (Rth) 140 K/W
Insulation voltage:
1 min.; Uins 700 V
Maximum noise (white noise) 5 µV/V
Max. resistance change at
rated dissipation for resistance range,
|R/R| max., after 1000 h
1.5 %
SAFETY REQUIREMENTS AND QUALIFICATIONS
DESCRIPTION VR25
Safety requirements / qualifications AEC-Q200
VR25
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Note
(1) See table “Temperature Coefficient and Resistance Range” for selecting correct ohmic value - tolerance combination.
TEMPERATURE COEFFICIENT AND RESISTANCE RANGE
TYPE TCR TOLERANCE RESISTANCE E-SERIES
VR25 ± 200 ppm/K
± 1 % 100 k to 15 ME24; E96
± 5 % 100 k to 22 ME24; E96
± 10 % 15 M to 22 ME24
PART NUMBER AND PRODUCT DESCRIPTION
PART NUMBER: VR25000001003FA100
TYPE / SIZE VARIANT TCR RESISTANCE TOLERANCE (1) PACKAGING SPECIAL
VR25000 = VR25 0 = neutral 0 = standard 3 digit value
1 digit multiplier
MULTIPLIER
0 = *100
1 = *101
2 = *102
3 = *103
4 = *104
5 = *105
6 = *106
F = ± 1 %
J = ± 5 %
K = ± 10 %
A1
A5
R5
N4
00 = standard
PRODUCT DESCRIPTION: VR25 1 % A1 100K
VR25 1 % A1 100K
TYPE / SIZE TOLERANCE PACKAGING RESISTANCE
VR25 ± 1 %
± 5 %
± 10 %
A1
A5
R5
N4
100K = 100 k
PACKAGING
TYPE CODE QUANTITY PACKAGING STYLE WIDTH PITCH DIMENSIONS
VR25
A1 1000
Taped according to IEC 60286-1 fan-folded in a box
53 mm 5 mm 75 mm x 31 mm x 260 mm
A5 5000 53 mm 5 mm 76 mm x 105 mm x 265 mm
N4 4000 Taped according to IEC 60286-2 fan-folded in a box - 12.7 mm 48 mm x 253 mm x 330 mm
R5 5000 Taped according to IEC 60286-1 on a reel 53 mm 5 mm 93 mm x 300 mm x 298 mm
V R 5 0 0 0 0 0 1 0 0 3 F A 1 0 02
VR25
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DESCRIPTION
Production is strictly controlled and follows an extensive
set of instructions established for reproducibility. A
homogeneous film of metal alloy is deposited on a high
grade ceramic body and conditioned to achieve the desired
temperature coefficient. Plated steel termination caps are
firmly pressed on the metalized rods. Mostly, a special laser
is used to achieve the target value by smoothly cutting a
helical groove in the resistive layer without damaging the
ceramics. Connecting wires of electrolytic copper plated
with 100 % pure tin are welded to the termination caps.
The resistor elements are covered by a light blue
protective coating designed for electrical, mechanical, and
climatic protection. Four or five color code rings designate
the resistance value and tolerance in accordance with
IEC 60062.
The result of the determined production is verified by an
extensive testing procedure performed on 100 % of the
individual resistors. Only accepted products are stuck
directly on the adhesive tapes in accordance with
IEC 60286-1 or for the radial versions in accordance to
IEC 60286-2.
MATERIALS
Vishay acknowledges the following systems for the
regulation of hazardous substances:
• IEC 62474, Material Declaration for Products of and for the
Electrotechnical Industry, with the list of declarable
substances given therein (1)
• The Global Automotive Declarable Substance List
(GADSL) (2)
• The REACH regulation (1907/2006/EC) and the related list
of substances with very high concern (SVHC) (3) for its
supply chain
The products do not contain any of the banned substances
as per IEC 62474, GADSL, or the SVHC list, see
www.vishay.com/how/leadfree.
Hence the products fully comply with the following
directives:
• 2000/53/EC End-of-Life Vehicle Directive (ELV) and
Annex II (ELV II)
• 2011/65/EU Restriction of the Use of Hazardous
Substances Directive (RoHS) with amendment
2015/863/EU
• 2012/19/EU Waste Electrical and Electronic Equipment
Directive (WEEE)
Vishay pursues the elimination of conflict minerals from its
supply chain, see the Conflict Minerals Policy at
www.vishay.com/doc?49037.
ASSEMBLY
The resistors are suitable for processing on automatic
insertion equipment and cutting and bending machines.
Excellent solderability is proven, even after extended
storage. They are suitable for automatic soldering using
wave or dipping.
The resistors are completely lead (Pb)-free, the pure tin
plating provides compatibility with lead (Pb)-free and
lead-containing soldering processes. The immunity of the
plating against tin whisker growth, in compliance with
IEC 60068-2-82, has been proven under extensive testing.
The encapsulant is resistant to cleaning solvent specified in
IEC 60115-1. The suitability of conformal coatings, if
applied, shall be qualified by appropriate means to ensure
the long-term stability of the whole system.
APPROVALS
These resistors meet the requirements of AEC-Q200.
RELATED PRODUCTS
For a correlated range of Metal Film Resistors see the
datasheet:
“High Ohmic / High Voltage Metal Film Leaded Resistors”,
www.vishay.com/doc?30260
For product that offers high power dissipation and metal
oxide film technology see the datasheet:
“High Power Metal Oxide Leaded Resistors”,
www.vishay.com/doc?20128
Notes
(1) The IEC 62474 list of declarable substances is maintained in a dedicated database, which is available at http://std.iec.ch/iec62474.
(2) The Global Automotive Declarable Substance List (GADSL) is maintained by the American Chemistry Council, and available at
www.gadsl.org
(3) The SVHC list is maintained by the European Chemical Agency (ECHA) and available at http://echa.europa.eu/candidate-list-table.
VR25
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FUNCTIONAL PERFORMANCE
Derating
Hot-Spot Temperature Rise (T) as a Function of Dissipated Power
VR25
-55
Ambient Temperature in °C
Power in %
050
70 100 125 155
20
0
40
60
80
100
0 0.10 0.250.20 P (W)
35
0
10
20
25
30
ΔT
(K)
0.150.05
5
15
VR25
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Maximum allowed peak pulse voltage in accordance with IEC 60065, 14.2;
50 discharges from a 1nF capacitor charged to Ûmax.; 12 discharges/min (drift R/R 2 %)
VR25
Temperature Rise (T) at the Lead End (Soldering Point) as a Function of Dissipated Power at Various Lead Lengths
after Mounting
VR25
10-2 10-1 102
10
Rn (MΩ)
8
4
6
7
1
5
Ûmax.
(kV)
0 0.10 0.2250.20
P (W)
35
0
10
20
25
30
ΔT
(K)
0.1750.075
5
15
5 mm
10 mm
15 mm
0.150.1250.050.025 0.25
VR25
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TESTS PROCEDURES AND REQUIREMENTS
All tests are carried out in accordance with the following
specifications:
• IEC 60115-1, generic specification (includes tests)
The test and requirements table contains only the most
important tests. For the full test schedule refer to the
documents listed above.
The tests are carried out with reference to IEC 60115-1, in
accordance with IEC 60068-2-xx test method and under
standard atmospheric conditions in accordance with
IEC 60068-1, 5.3.
A climatic category 55 / 155 / 56 is applied, defined by the
lower category temperature (LCT = -55 °C), the upper
category temperature (UCT = 155 °C), and the duration
of exposure in the damp heat, steady state test (56 days).
Unless otherwise specified the following values apply:
• Temperature: 15 °C to 35 °C
• Relative humidity: 45 % to 75 %
• Air pressure: 86 kPa to 106 kPa (860 mbar to 1060 mbar).
For performing some of the tests, the components are
mounted on a test board in accordance with IEC 60115-1,
4.31.
In test procedures and requirements table, only 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.
TESTS PROCEDURES AND REQUIREMENTS
IEC 60115-1
CLAUSE
IEC 60068-2
TEST METHOD TEST PROCEDURE
REQUIREMENTS
PERMISSIBLE CHANGE
(Rmax.)
4.6.1.1 Insulation resistance Umax. DC = 500 V during 1 min; V-block method Rins min.: 10 000 M
4.7 Voltage proof URMS = Uins; 60 s No breakdown or flashover
4.8 Temperature coefficient At (20 / -55 / 20) °C and (20 / 155 / 20) °C ± 200 ppm/K
4.12 Noise IEC 60195 Max. 5 V/V
4.13 Short time overload
Room temperature; 2.5 x ;
(voltage not more than 2 x limiting voltage);
10 cycles; 5 s ON and 45 s OFF
R max.: ± 2 % R
4.16
21 (Ua1)
21 (Ub)
21 (Uc)
Robustness of
terminations Tensile, bending, and torsion No damage
R max.: ± 0.5 % R
4.17 20 (Ta) Solderability
+235 °C; 2 s; solder bath method; SnPb40
+245 °C; 3 s; solder bath method; SnAg3Cu0.5
(before aging)
Good tinning ( 95 % covered);
no damage
+235 °C; 2 s; solder bath method; SnPb40
+245 °C; 3 s; solder bath method; SnAg3Cu0.5
(after aging)
Good tinning ( 95 % covered);
no damage
4.18 20 (Tb) Resistance to
soldering heat
Unmounted components
(260 ± 5) °C; (10 ± 1) s R max.: ± 0.5 % R
4.19 14 (Na) Rapid change
of temperature
30 min at -55 °C and 30 min at +155 °C;
5 cycles R max.: ± 0.5 % R
4.20 29 (Eb) Bump 3 x 1500 bumps in 3 directions; 40 gNo damage
R max.: ± 0.5 % R
4.22 6 (Fc) Vibration
10 sweep cycles per direction;
10 Hz to 2000 Hz;
1.5 mm or 200 m/s2
No damage
R max.: ± 0.5 % R
4.23 Climatic sequence:
Rins min.: 1 G
R max.: ± 1.5 % R
4.23.2 2 (Bb) Dry heat 16 h; 155 °C
4.23.3 30 (Db) Damp heat
cyclic
24 h; 25 °C to 55 °C;
90 % to 100 % RH
4.23.4 1 (Ab) Cold 2 h; -55 °C
4.23.5 13 (M) Low air pressure 2 h; 8.5 kPa;
15 °C to 35 °C
4.23.6 30 (Db) Damp heat
remaining cyclic
5 days; 55 °C;
95 % to 100 % RH; 5 cycles
4.23.7 DC load Apply rated power for 1 min
P70 x R
VR25
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DIMENSIONS
VR25 WITH RADIAL TAPING
Lead Spacing (F = 4.8 mm), Size 0207
4.24 78 (Cab) Damp heat
(steady state)
56 days; 40 °C;
90 % to 95 % RH; loaded with 0.01 P70
(steps: 0 V to 100 V)
R max.: ± 1.5 % R
4.25.1 Endurance (at 70 °C) 1000 h; loaded with P70 or Umax.;
1.5 h ON and 0.5 h OFF R max.: ± 1.5 % R
4.26 Active flammability
“cheese-cloth test”
Steps of:
5 / 10 / 16 / 25 / 40 x P70 duration 5 min
No flaming of
gauze cylinder
4.35 Passive flammability
“needle-flame test” Application of test flame for 20 s
No ignition of product;
no ignition of under-layer;
burning time less than 30 s
DIMENSIONS - Leaded resistor types, mass, and relevant physical dimensions
TYPE Ø Dmax. (mm) L1 max. (mm) L2 max. (mm) Ø d (mm) MASS (mg)
VR25 2.5 6.5 7.5 0.58 ± 0.05 212
TESTS PROCEDURES AND REQUIREMENTS
IEC 60115-1
CLAUSE
IEC 60068-2
TEST METHOD TEST PROCEDURE
REQUIREMENTS
PERMISSIBLE CHANGE
(Rmax.)
L1
d
D
L2
P
P
2
W
W
0
D
0
P
1
P
0
L
1
L
F
H
0
H
1
H
α = 30° to 40°
α
α
aa
DIMENSIONS in millimeters
Pitch of components P 12.7 ± 1.0
Lead spacing F 4.8 + 0.7 / - 0.0
Width of carrier tape W 18.0 ± 0.5
Body to hole center H 19.5 ± 1.0
Height for cutting (max.) L 11
Height for bending H016.5 ± 0.5
Component height (max.) H129
VR25
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HISTORICAL 12NC INFORMATION
• The resistors have a 12-digit numeric code starting with
- 2322 241 refers to VR25
• 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
Historical 12NC Example
• The 12NC for a VR25, resistor value 7.5 M, 5 %
tolerance, supplied on a bandoleer of 1000 units in
ammopack, is: 2322 241 13755.
RESISTANCE DECADE LAST DIGIT
100 k to 976 k4
1 M to 9.76 M5
10 M6
12NC CODING FOR VR25 - Resistor type and packaging
TYPE TOLERANCE
(%)
VR25 CODING STARTS WITH 2322 241 .....
BANDOLIER IN AMMOPACK BANDOLIER ON REEL
RADIAL TAPED STRAIGHT LEADS
4000 UNITS
52 mm 52 mm 52 mm
1000 UNITS 5000 UNITS 5000 UNITS
VR25
± 1 0.... 8.... 7.... 6....
± 5 36... 13... 53... 23...
± 10 38... 12... 52... 22...
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Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
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consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
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Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please
contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
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Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
