VR37 Vishay BCcomponents High Ohmic (up to 33 M)/ High Voltage (up to 3.5 kV) Resistors FEATURES * Lead (Pb)-free solder contacts 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". * 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 Substances" (RoHS) directive 2002/95/EC (issue 2004) APPLICATIONS * Where high resistance, high stability and high reliability at high voltage are required * Safety component in combination with high voltage * White goods * High humidity environment * Power supplies TECHNICAL SPECIFICATIONS DESCRIPTION VALUE range (1) 100 k to 33 M Resistance tolerance and series 1 %: E24/E96 series; 5 %: E24 series Resistance Maximum dissipation at Tamb = 70 C 0.5 W Thermal resistance, Rth 120 K/W Temperature coefficient 200 x 10-6/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 182 For technical questions, contact: ff3dresistors@vishay.com Document Number: 28733 Revision: 20-Sep-07 VR37 High Ohmic (up to 33 M)/ High Voltage (up to 3.5 kV) Resistors Vishay BCcomponents 12NC INFORMATION * The resistors have a 12-digit numeric code starting with 2322 242. Last Digit of 12NC Indicating Resistance Decade * The subsequent: first digit for 1 % tolerance products (E24 and E96 series) or 2 digits for 5 % (E24 series) indicate the resistor type and packaging * The remaining digits indicate the resistance value: RESISTANCE DECADE LAST DIGIT 100 to 976 k 1 to 9.76 M 10 M 4 5 6 12NC Example - The first 3 digits for 1 % or 2 digits for 5 % tolerance products indicate the resistance value The 12NC for a VR37, resistor value 7.5 M, 5 % tolerance, supplied on a bandolier of 1000 units in ammopack, is: 2322 242 13755. - The last digit indicates the resistance decade 12NC - resistor type and packaging ORDERING CODE 2322 242 ..... TAPE WIDTH (mm) TYPE VR37 TOL. (%) 52 BANDOLIER IN AMMOPACK BANDOLIER ON REEL 1000 units 5000 units 1 8.... 6.... 5 13... 23... PART NUMBER PART NUMBER: VR37000001503JA100 V R 3 7 0 0 0 0 0 1 5 0 3 J A 1 0 0 MODEL/SIZE SPECIAL CHARACTER TCR/MATERIAL VALUE TOLERANCE PACKAGING (1) SPECIAL VR37000 0 = neutral Z = value overflow (Special) 0 = standard 3 digit value 1 digit multiplier Multiplier: 3 = *103 4 = *104 5 = *105 F=1% J=5% A1 R5 The 2 digits are used for all special parts. 00 = standard PRODUCT DESCRIPTION: VR37 5 % A1 150K VR37 5% A1 150K MODEL/SIZE VR37 TOLERANCE 1% 5% PACKAGING (1) A1 R5 RESISTANCE VALUE 150K = 150 k 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 A1 1000 Bandolier in ammopack straight leads 52 mm R5 5000 Bandolier on reel straight leads 52 mm Document Number: 28733 Revision: 20-Sep-07 MODEL/SIZE VR37 For technical questions, contact: ff3dresistors@vishay.com www.vishay.com 183 VR37 Vishay BCcomponents High Ohmic (up to 33 M)/ High Voltage (up to 3.5 kV) Resistors DIMENSIONS L1 Od OD L2 Outline DIMENSIONS - resistor type and relevant physical dimensions TYPE OD MAX. L1 MAX. L2 MAX. Od VR37 4.0 9.0 10.0 0.7 0.03 Yellow and grey are used instead of gold and silver because metal particles in the lacquer could affect high-voltage properties. MASS PER 100 UNITS TYPE MASS (g) VR37 45.7 OUTLINES 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". 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"). 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 publication 60063". LIMITING VALUES LIMITING VOLTAGE (1) (V) TYPE VR37 DC RMS 3500 2500 LIMITING POWER (W) 0.5 Notes: (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. www.vishay.com 184 For technical questions, contact: ff3dresistors@vishay.com Document Number: 28733 Revision: 20-Sep-07 VR37 High Ohmic (up to 33 M)/ High Voltage (up to 3.5 kV) Resistors The power that the resistor can dissipate depends on the operating temperature. Vishay BCcomponents 20 ^ V max (kV) Pmax (% Prated) 100 10 8 50 6 0 - 55 0 50 70 100 4 10 -2 155 Tamb (C) Maximum dissipation (Pmax) in percentage of rated power as a function of the ambient temperature (Tamb) 10 -2 1 10 Rn (M) 10 2 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 %) Pulse Loading Capability Derating 50 80 T (K) T (K) 5 mm 40 60 10 mm 30 15 mm 40 20 20 0 10 0 0 0.4 0.8 P (W) 1.2 Hot-spot temperature rise (T) as a function of dissipated power 0 0.4 0.8 P (W) 1.2 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: 28733 Revision: 20-Sep-07 For technical questions, contact: ff3dresistors@vishay.com www.vishay.com 185 VR37 Vishay BCcomponents High Ohmic (up to 33 M)/ High Voltage (up to 3.5 kV) Resistors 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. TEST PROCEDURES AND REQUIREMENTS IEC 60068-2 TEST METHOD TEST 21 (U) robustness of terminations: 4.16.2 21 (Ua1) 4.16.3 IEC 60115-1 CLAUSE PROCEDURE REQUIREMENTS tensile all samples O 0.7 mm; load 10 N; 10 seconds number of failures < 10 x 10-6 21 (Ub) bending half number of samples O 0.7 mm; load 5 N; 4 x 90 number of failures < 10 x 10-6 4.16.4 21 (Uc) torsion other half of samples 3 x 360 in opposite directions no damage R max.: (0.5 % R + 0.05 ) 4.17 20 (Ta) solderability 2 seconds; 235 C good tinning; no damage 4.18 20 (Tb) resistance to soldering heat thermal shock: 3 seconds; 350 C; 3 mm from body R max.: (0.5 % R + 0.05 ) 4.19 14 (Na) rapid change of temperature 30 minutes at - 55 C and 30 minutes at + 155 C; 5 cycles R max.: (0.5 % R + 0.05 ) 4.20 29 (Eb) bump 3 x 1500 bumps in 3 directions; 40 g no damage R max.: (0.5 % R + 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 max.: (0.5 % R + 0.05 ) 4.16 climatic sequence: 4.23 4.23.2 2 (Ba) dry heat 16 hours; 155 C 4.23.3 30 (Db) damp heat (accelerated) 1st cycle 24 hours; 55 C; 90 to 100 % RH 4.23.4 1 (Aa) cold 2 hours; - 55 C 4.23.5 13 (M) low air pressure 2 hours; 8.5 kPa; 15 to 35 C 4.23.6 30 (Db) damp heat (accelerated) remaining cycles 5 days; 55 C; 95 to 100 % RH www.vishay.com 186 For technical questions, contact: ff3dresistors@vishay.com Rins min.: 103 M R max.: (1.5 % R + 0.1 ) Document Number: 28733 Revision: 20-Sep-07 VR37 High Ohmic (up to 33 M)/ High Voltage (up to 3.5 kV) Resistors Vishay BCcomponents TEST PROCEDURES AND REQUIREMENTS IEC 60068-2 TEST METHOD TEST PROCEDURE REQUIREMENTS 3 (Ca) damp heat (steady state) 56 days; 40 C; 90 to 95 % RH; dissipation 0.01 Pn; limiting voltage 100 V (DC) R max.: (1.5 % R + 0.1 ) 4.25.1 endurance 1000 hours at 70 C; Pn or Vmax R max.: (1.5 % R + 0.1 ) 4.8.4 temperature coefficient between - 55 C and + 155 C (TC x 10-6/K) 200 4.7 voltage proof on insulation 700 VRMS during 1 minute; V-block method no breakdown 4.12 noise "IEC publication 60195" max. 2.5 V/V insulation resistance 500 V (DC) during 1 minute; V-block method Rins min.: 104 M short time overload room temperature; dissipation 6.25 x Pn (voltage not more than 2 x limiting voltage); 10 cycles; 5 seconds ON and 45 seconds OFF R max.: (2.0 % R + 0.05 ) IEC 60115-1 CLAUSE 4.24.2 4.6.1.1 4.13 Document Number: 28733 Revision: 20-Sep-07 For technical questions, contact: ff3dresistors@vishay.com www.vishay.com 187 Legal Disclaimer Notice Vishay Notice Specifications of the products displayed herein are subject to change without notice. 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