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VR25
Vishay BCcomponents
High Ohmic/High Voltage Resistors
FEATURES
* * * * High pulse loading capability Small size Lead (Pb)-free solder contacts 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)
APPLICATIONS
* Where high resistance, high stability and high reliability at high voltage are required * High humidity environment * White goods * Power supplies 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".
TECHNICAL SPECIFICATIONS
DESCRIPTION Resistance range1) Resistance tolerance and series: 100 k to 15 M 15 M to 22 M Maximum dissipation at Tamb = 70 C Thermal resistance, Rth Temperature coefficient Maximum permissible voltage: DC RMS Dielectric withstanding voltage of the insulation for 1 minute Basic specifications Climatic category (IEC 60068) Stability after: load (1000 hours) accelerated damp heat test (6 days) long term damp heat test (56 days) Noise Note 1. Ohmic values (other than resistance range) are available on request. VALUE 100 k to 22 M 1 %: E24/E96 series; 5 %: E24 series 5 %: E24 series; 10 %: E12 series 0.25 W 140 K/W 200 x 10-6/K 1600 V 1150 V 700 V IEC 60115-1B 55/155/56 R/R max.: 1.5 % + 0.1 R/R max.: 1.5 % + 0.1 R/R max.: 1.5 % + 0.1 max. 5 V/V
12NC INFORMATION
* The resistors have a 12-digit numeric code starting with 2322 241 * 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.
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Last Digit of 12NC Indicating Resistance Decade
RESISTANCE DECADE 100 to 976 k 1 to 9.76 M 10 M LAST DIGIT 4 5 6
12NC Example The 12NC for a VR25, resistor value 7.5 M, 5 % tolerance, supplied on a bandolier of 1000 units in ammopack, is: 2322 241 13755.
Document Number: 28732 Revision: 06-Dec-05
For technical questions contact: ff3dresistors@vishay.com
VR25
High Ohmic/High Voltage Resistors
Vishay BCcomponents
12NC - resistor type and packing
ORDERING CODE 2322 241 ..... BANDOLIER IN AMMOPACK TYPE TOL. (%) RADIAL TAPED 4000 units 1 VR25 5 10 0.... 36... 52 mm 1000 units 8.... 13... 12... STRAIGHT LEADS 26 mm 2000 units 43... 42... 52 mm 5000 units 7.... 53... 52... 52 mm 5000 units 6.... 23... 22... BANDOLIER ON REEL
PART NUMBER
PART NUMBER: VR25000001503JA100
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
SPECIAL CHARACTER 0 = neutral Z = value overflow (Special)
TC/MATERIAL 0 = standard
VALUE 3 digit value 1 digit multiplier Multiplier: 3 = *103 4 = *104 5 = *105
TOLERANCE F=1% J=5% K = 10 %
PACKING1) A5 A2 A1 R5 N4
PRODUCT DESCRIPTION: VR25 5 % A1 150K VR25 MODEL/SIZE VR25 5% TOLERANCE 1% 5% 10 % A1 PACKING1) A1 A5 150K RESISTANCE VALUE 47K = 47 K 50R1 = 50.1
1)
Please refer to table PACKING.
Note Products can be ordererd using either the 12NC or the PART NUMBER. The PART NUMBER is shown to facilitate the introduction of a unified part numbering system. Currently, this PART NUMBER is applicable in the Americas only.
PACKING
CODE A5 A2 A1 R5 N4 PIECES 5000 2000 1000 5000 4000 DESCRIPTION Bandolier in ammopack straight leads 52 mm Bandolier in ammopack straight leads 26 mm Bandolier in ammopack straight leads 52 mm Bandolier on reel straight leads 52 mm Bandolier in ammopack radial taped VR25 MODEL/SIZE
Document Number: 28732 Revision: 06-Dec-05
For technical questions contact: ff3dresistors@vishay.com
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VR25
Vishay BCcomponents
DIMENSIONS
L1
High Ohmic/High Voltage Resistors
d D L2
Outline
DIMENSIONS - resistor type and relevant physical dimensions
TYPE VR25 D MAX. 2.5 L1 MAX. 6.5 L2 MAX. 7.5 d 0.58 0.05
MASS PER 100 UNITS
TYPE VR25 52 mm VR25 26 mm MASS (g) 21.2 14.8
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 (L1) 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 publication 60294").
MARKING
The nominal resistance and tolerance are marked on the resistor using four or five colored bands in accordance with IEC publication 60062 "Color codes for fixed 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 %, 5 % or 10 %. The values of the E96/E24/E12 series are in accordance with "IEC publication 60063".
LIMITING VALUES
TYPE DC VR25 Note 1. The maximum voltage that may be continuously applied to the resistor element, see "IEC publication 60115-1". The maximum permissible hot-spot temperature is 155 C. 1600 LIMITING VOLTAGE1) (V) RMS 1150 LIMITING POWER (W) 0.25
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For technical questions contact: ff3dresistors@vishay.com
Document Number: 28732 Revision: 06-Dec-05
VR25
High Ohmic/High Voltage Resistors
Vishay BCcomponents
The power that the resistor can dissipate depends on the operating temperature.
Pmax (%Prated) 100
^
20
Vmax (kV)
10 8
50
6
0 - 55
0
50
70
100
155 Tamb (C)
4 10-2
10-1
1
10
102 Rn (M)
Maximum dissipation (Pmax) in percentage of rated power as a function of the ambient temperature (Tamb)
Maximum allowed peak pulse voltage in accordance with "IEC 60065 chapter 14.1"; 50 discharges from a 1 nF capacitor charged to V max ; 12 discharges/minute (drift R/R 2 %)
Derating
Pulse Loading Capability
100 T (K) 80
50 T (K) 40 5 mm 10 mm 15 mm
60
30
40
20
20
10
0
0
0
0.1
0.2
P (W)
0.3
0
0.1
0.2
P (W)
0.3
Hot-spot temperature rise (T) as a function of dissipated power
Temperature rise (T) at the lead end (soldering point) as a function of dissipated power at various lead lengths after mounting
Application Information
Document Number: 28732 Revision: 06-Dec-05
For technical questions contact: ff3dresistors@vishay.com
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VR25
Vishay BCcomponents
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with the schedule of "IEC publication 60115-1", category LCT/UCT/56 (rated temperature range: Lower Category Temperature, Upper Category Temperature; damp heat, long term, 56 days). The testing also covers the requirements specified by EIA and EIAJ. The tests are carried out in accordance with IEC publication 60068-2, "Recommended basic climatic and mechanical robustness testing procedure for electronic components" and under standard atmospheric conditions according to "IEC 60068-1", subclause 5.3. In the Test Procedures and Requirements table the tests and requirements are listed with reference to the relevant clauses of "IEC publications 60115-1 and 60068-2"; 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 Resistors
TEST PROCEDURES AND REQUIREMENTS
IEC 60115-1 CLAUSE 4.16 IEC 60068-2 TEST METHOD 21 (U) TEST PROCEDURE REQUIREMENTS
robustness of terminations: 0.6 mm; load 10 N; 10 s 0.6 mm; load 5 N; 4 x 90 3 x 360 in opposite directions 2 s; 235 C thermal shock: 3 s; 350 C; 3 mm from body 30 minutes at - 55 C and 30 minutes at + 155 C; 5 cycles 3 x 1500 bumps in 3 directions; 40 g R/R max.: 0.5 % + 0.05 number of failures < 10 x 10-6 number of failures < 10 x 10-6
4.16.2
21 (Ua1)
tensile all samples
4.16.3
21 (Ub)
bending half number of samples
4.16.4
21 (Uc)
torsion other half of samples
no damage R/R max.: 0.5 % + 0.05 good tinning; no damage R/R max.: 0.5 % + 0.05
4.17
20 (Ta)
solderability
4.18
20 (Tb)
resistance to soldering heat
4.19
14 (Na)
rapid change of temperature
4.20
29 (Eb)
bump
no damage R/R max.: 0.5 % + 0.05
4.22
6 (Fc)
vibration
frequency 10 to 500 Hz; displacement 1.5 mm or acceleration 10 g; 3 directions; total 6 hours (3 x 2 hours)
no damage R/R max.: 0.5 % + 0.05
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For technical questions contact: ff3dresistors@vishay.com
Document Number: 28732 Revision: 06-Dec-05
VR25
High Ohmic/High Voltage Resistors
Vishay BCcomponents
TEST PROCEDURES AND REQUIREMENTS
IEC 60115-1 CLAUSE 4.23 IEC 60068-2 TEST METHOD TEST PROCEDURE REQUIREMENTS
climatic sequence: 16 hours; 155 C 24 hours; 55 C; 90 to 100 % RH 2 hours; - 55 C 2 hours; 8.5 kPa; 15 to 35 C 5 days; 55 C; 95 to 100 % RH 56 days; 40 C; 90 to 95 % RH; dissipation 0.01 Pn; limiting voltage 100 V (DC) 1000 hours at 70 C; Pn or Vmax between - 55 C and + 155 C (TC x 10-6/K) 700 V (RMS) during 1 minute; V-block method "IEC publication 60195" Rins min.: 103 M R/R max.: 1.5 % + 0.1 R/R max.: 1.5 % + 0.1
4.23.2
2 (Ba)
dry heat
4.23.3
30 (Db)
damp heat (accelerated) 1st cycle cold
4.23.4
1 (Aa)
4.23.5
13 (M)
low air pressure
4.23.6
30 (Db)
damp heat (accelerated) remaining cycles damp heat (steady state)
4.24.2
3 (Ca)
4.25.1
endurance
R/R max.: 1.5 % + 0.1 200
4.8.4
temperature coefficient
4.7
voltage proof on insulation
no breakdown
4.12
noise
max. 5 V/V
4.6.1.1
insulation resistance
500 V (DC) during 1 minute; V-block method room temperature; dissipation 6.25 x Pn (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 Pn (RMS) duration 5 minutes
Rins min.: 104 M R/R max.: 2.0 % + 0.05
4.13
short time overload
4.26
active flammability "Cheese-cloth test"
no flaming of gauze cylinder
OTHER TEST IN ACCORDANCE WITH IEC 60695 2.2 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
Document Number: 28732 Revision: 06-Dec-05
For technical questions contact: ff3dresistors@vishay.com
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Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000 Revision: 08-Apr-05
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