VH Hermetic Vishay Foil Resistors Hermetically Sealed High Precision Bulk Metal(R) Foil Technology Aerospace Resistors with TCR of 1 ppm/C, Tolerance to 0.005 % and Load Life Stability of 0.005 % FEATURES * Temperature coefficient of resistance (TCR): - 55 C to + 125 C, + 25 C ref.: VH102K: 1 ppm/C typical VHS102: 2 ppm/C typical VHS555: 5 ppm/C maximum * Tolerance: to 0.005 % * Resistance range: 1 to 150 k (higher or lower resistance values are available * Load life stability: 0.005 % (70 C for 2000 h at rated power) * Electrostatic discharge (ESD) > 25 000 V * Power rating: 0.6 W at + 70 C; 0.3 W at + 125 C * Non inductive, non capacitive design * Non hot spot design * Rise time: 1.0 ns without ringing * Current Noise: < - 40 dB * Thermal EMF: 0.05 V/C typical * Voltage coefficient: < 0.1 ppm/V * Non inductive: < 0.08 H * Termal finishes available: lead (Pb)-free tin/lead alloy * Impervious to harmful environments - oil filled * For better performance, please see VH102Z datasheet Any value at any tolerance available within resistance range The "VH" series of resistors is the hermetic version of several molded "S" series devices. Hermetic sealing eliminates the ingress of both oxygen, which degrades resistors over long periods, and moisture which degrades resistors more quickly. These parts are made with glass to metal seal enclosures employing Kovar eyelets which allow the copper leads to pass through the enclosure to minimize the thermal EMF from the lead junctions. Rubber fill between the metal housing and resistance element acts both as a mechanical damper and thermal transfer path. VHS102 and VH102K are the hermetically-sealed counterpart of the S102C and S102K high-performance molded resistors. VHS555 is the hermetically-sealed version of the S555, MIL style RNC90Y. TABLE 1 - MODEL SELECTION RESISTANCE MODEL RANGE NUMBER () VH102K VHS102 VHS555 STANDARD RESISTANCE TOLERANCE1) % AMBIENT AVERAGE MAXIMUM 3) WEIGHT WORKING POWER RATING (g) VOLTAGE2) TIGHTEST LOOSEST at + 70 C at + 125 C 30.1 to 150K 20 to < 30.1 10 to < 20 5 to < 10 1 to < 5 0.005 0.01 0.05 0.10 0.25 1.0 1.0 1.0 1.0 1.0 30.1 to 150K 16.2 to < 30.1 4.99 to < 16.2 1 to < 4.99 0.005 0.05 0.10 0.25 1.0 1.0 1.0 1.0 300 0.6 W 0.3 W 1.4 DIMENSIONS INCHES mm W 0.185 maximum 4.70 maximum L 0.435 maximum 11.05 maximum H 0.430 maximum 10.92 maximum LL 1 0.125 25.4 3.18 LS 0.150 0.0104) 3.81 0.25 ST 0.095 maximum 2.41 maximum Notes Available from 1 to 100 k only Contains RNC90Y inside (4.99 to 121 k) Above 100 k VHS102 power is derated to 0.4 W at + 70 C and 0.2 W at + 125 C 0.375 H available FIGURE 1 - STANDARD IMPRINTING AND DIMENSIONS Front View L H VISHAY XXXX VHS555 Rear View W Resistance Value Code 100R01 0.01 % XXXX Model Number Tolerance Serial No. (Optional Marking) ST Date Code 08 10 Year Week LL LS Lead Material #22 AWG Round Solder Coated Copper * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63004 Revision: 23-Mar-10 For any questions, contact: foil@vishaypg.com www.foilresistors.com 1 VH Hermetic Vishay Foil Resistors TABLE 2 - TOLERANCE AND TCR VS. RESISTANCE VALUE RESISTOR RESISTANCE VALUE () TYPICAL TCR AND MAXIMUM SPREAD (- 55 C to + 125 C, + 25 C ref.) (ppm/C) VHS102 80 to 150K 2 2.5 VH102K 80 to 100K VHS102 VH102K VHS102 VH102K 1 2.5 2 3.5 50 to < 80 1 3.5 2 4.5 1 to < 50 1 4.5 TABLE 3 - SPECIFICATIONS5) Selected6) TCR Tracking8) 0.5 ppm/C Stability12) Load life at 2000 h VH102K VHS102 0.025 % 0.025 % VHS555 0.015 % at 0.3 W/+ 125 C 0.005 % 0.005 % 0.0025 % at 0.1 W/+ 60 C at 0.05 W/+ 125 C Load life at 10 000 h 0.02 % 0.02 % 0.01 % Shelf Life Stability 5 ppm (0.0005 %) maximum R after 1 year 10 ppm (0.001 %) maximum R after 3 years Current Noise < 0.010 VRMS/V of applied voltage (- 40 dB) High Frequency Operation Rise time 1.0 ns Inductance (L)9) 0.1 H maximum; 0.08 H typical Capacitance (C) 1.0 pF maximum; 0.5 pF typical Voltage Coefficient < 0.1 ppm/V10) Thermal EMF11) 0.1 V/C maximum; 0.05 V/C typical 1 V/W Hermeticity 10-7 atmospheric cc/s maximum Notes: 1) Standard resistance tolerance: 0.005 %; 0.01 %; 0.02 %; 0.05 %; 0.1 %; 0.25 %; 0.5 %; 1.0 %. 2) Not to exceed power rating of resistor. 3) See Figure 2 below. 4) 0.200" (5.08 mm) lead spacing available (except VHS555) specify VH102J (S102C type), VH102L (S102K type). 5) Maximum is 1.0 % A.Q.L. standard for all specifications except TCR. (For TCR information see notes 6 to 10.) Typical is a designers reference which represents that 85 % of the units supplied, over a long period of time, will be at least the figure shown or better. 6) Vishay maximum TCR spread is defined as the 3 (sigma) limit of a normal Gaussian distribution (99.73 % of a production lot) which is within a band, centered on the nominal curve. This Vishay maximum TCR spread is no greater than 2.5 ppm/C from nominal throughout the full temperature range. This definition of the Vishay maximum TCR spread from nominal applies to all resistance values. However, as the resistance value decreases below 80 , the Vishay maximum TCR spread from nominal specification starts to increase. (See Figure 3 in datasheet "7 Technical Reasons to Specify Vishay Bulk Metal(R) Foil Resistive Components") www.foilresistors.com 2 7) Selected TCR tracking is available for specially ordered lots of resistors. The selected TCR tracking can be 3, 2, 1 and as close as 0.5 ppm/C throughout the full temperature range. 8) TCR tracking is a measure of the similarity of resistance value change in two or more resistors which are undergoing the same temperature changes. Tracking could be expressed as the difference in the temperature coefficients of the resistors, expressed in ppm/C as (R1/R1 to R2/R2) x 10-6/TC. When a number of resistors are referenced to a nominal TCR, the spread or envelope around the nominal would be the difference. If the spread is 1.5 ppm/C about a nominal, the tracking, as defined above, will be 3 ppm/C. 9) Inductance (L) due mainly to the leads. 10) The resolution limit of existing test equipment (within the measurement capability of the equipment, or "essentially zero") 11) V/C relates to EMF due to lead temperature difference and V/W due to power applied to the resistor. 12) Load life R maximum can be reduced through in-house oriented processes. For any questions, contact: foil@vishaypg.com Document Number: 63004 Revision: 23-Mar-10 VH Hermetic Vishay Foil Resistors Current Path Before Trimming Interloop Capacitance Reduction in Series Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Mutual Inductance Reduction due to Opposing Current in Adjacent Lines Note: Foil shown in black, etched spaces in white FIGURE 3 - POWER DERATING CURVE - 55 C Percent of Rated Power at + 125 C FIGURE 2 - TRIMMING TO VALUES (Conceptual Illustration) + 70 C Double Rated Power + 200 + 175 + 150 + 125 Rated Power + 100 + 75 + 50 + 25 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200 Ambient Temperature (C) TABLE 4 - ENVIRONMENTAL PERFORMANCE COMPARISON MIL-PRF-55182/9 CHARACTERISTIC Y MAXIMUM R VH102K TYPICAL5) R VHS102 TYPICAL5) R VHS555 TYPICAL5) R Test Group I Thermal shock 0.05 % 0.002 % 0.002 % 0.002 % Overload 0.05 % 0.003 % 0.003 % 0.003 % 5 ppm/C See Figures 7 and 81) Temperature storage 0.05 % 0.005 % 0.005 % 0.0025 Low temperature operation 0.05 % 0.005 % 0.005 % 0.005 % Terminal strength 0.02 % 0.002 % 0.002 % 0.002 % Test Group II Resistance temperature characteristics See Figures 1 and 2, and Figures 5 and 61) Test Group III DWV 0.02 % 0.005 % 0.005 % 0.002 % Insulation resistance 104 M 40 x 105 M 40 x 105 M 40 x 105 M Resistance to solder heat 0.02 % 0.002 % 0.002 % 0.002 % Moisture resistance 0.05 % 0.005 % 0.005 % 0.005 % Shock 0.01 % 0.002 % 0.002 % 0.002 % Vibration 0.02 % 0.002 % 0.002 % 0.002 % 2000 h 0.05 % 0.03 % 0.03 % 0.01 % 10 000 h 0.5 % 0.05% 0.05 % 0.02 % 0.05 % 0.02 % 0.02 % 0.02 % 0.05 % 0.05 % 0.05 % 0.04 % 0.0005 %/V < 0.00001 %/V < 0.00001 %/V < 0.00001 %/V Test Group IV Test Group V Life test at 0.3 W/+ 125 C Test Group Va + 70 C power rating Test Group VI High temperature exposure Test Group VII Voltage coefficient Notes: 1. These figures can be found in data sheet "7 Technical Reasons to Specify Bulk Metal(R) Foil Resistive Components." * See previous page for numbered footnotes. Document Number: 63004 Revision: 23-Mar-10 For any questions, contact: foil@vishaypg.com www.foilresistors.com 3 VH Hermetic Vishay Foil Resistors TABLE 5 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y578780K5000V9L (preferred part number format) DENOTES PRECISION VALUE R= K = k M = M Y Y 5 AER* 7 8 7 8 0 K 0 = standard product, tin/lead terminations 9 = standard product, lead (Pb)-free terminations Other = custom 5 0 0 0 V 9 PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 0077 = VHS102 0788 = VH102J 5787 = VH102K 0787 = VH102L 0087 = VHS555 V = 0.005 % T = 0.01 % Q = 0.02 % A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 % L = bulk pack L FOR EXAMPLE: ABOVE GLOBAL ORDER Y5787 80K5000 V 9 L: TYPE: VH102K VALUE: 80.5 k ABSOLUTE TOLERANCE: 0.005 % TERMINATION: lead (Pb)-free PACKAGING: bulk pack HISTORICAL PART NUMBER: VH102KT 8K500 V B (will continue to be used) VH102K T 80K500 V B MODEL TERMINATION OHMIC VALUE RESISTANCE TOLERANCE PACKAGING VHS102 VH102J VH102K VH102L VHS555 T = lead (Pb)-free None = tin/lead alloy 80K500 = 80.5 k V = 0.005 % T = 0.01 % Q = 0.02 % A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 % B = bulk pack Note * Application engineering release: for non-standard requests, please contact application engineering. www.foilresistors.com 4 For any questions, contact: foil@vishaypg.com Document Number: 63004 Revision: 23-Mar-10 Legal Disclaimer Notice Vishay Precision Group Disclaimer ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE. Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay Precision Group"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. The product specifications do not expand or otherwise modify Vishay Precision Group's terms and conditions of purchase, including but not limited to, the warranty expressed therein. Vishay Precision Group makes no warranty, representation or guarantee other than as set forth in the terms and conditions of purchase. To the maximum extent permitted by applicable law, Vishay Precision Group disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Information provided in datasheets and/or specifications may vary from actual results in different applications and performance may vary over time. Statements regarding the suitability of products for certain types of applications are based on Vishay Precision Group's knowledge of typical requirements that are often placed on Vishay Precision Group products. 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. No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or by any conduct of Vishay Precision Group. The products shown herein are not designed for use in life-saving or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay Precision Group products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay Precision Group for any damages arising or resulting from such use or sale. Please contact authorized Vishay Precision Group personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document No.: 63999 Revision: 27-Apr-11 www.vishaypg.com 1