H Series Vishay Foil Resistors Hermetically Sealed High Precision Bulk Metal® Foil Technology Resistors with TCR of ± 2 ppm/°C, Tolerance of ± 0.001 % and Load Life Stability of ± 0.005 % FEATURES • Temperature coefficient of resistance (TCR): ± 2 ppm/°C typical (- 55 °C to + 125 °C, + 25 °C ref.) Pb-free Available • Power rating: 0.3 to 2.5 W at + 25 °C (depending on model - see table 2) RoHS* COMPLIANT • Tolerance: to ± 0.001 % Any value at any tolerance available within resistance range • Load life stability: ± 0.005 % (70 °C for 2000 h at half rated power) INTRODUCTION • Shelf life stability: ± 2 ppm for at least 10 years The H series resistors are oil-filled, hermetically sealed ultra precision resistors. • Resistance range: 5 Ω to 1.84 MΩ (higher or lower values of resistance available) • Electrostatic discharge (ESD) above 25 000 V The hermetic sealing eliminates the ingress of moisture and oxygen, while the oil acts as a thermal conductor, thus eliminating long term degradation elements of unsealed resistors, while at the same time allowing the device to accept short periods of overload without degradation. • Rise time: 1.0 ns without ringing Vishay’s Bulk Metal® Foil outperforms all other resistor technologies available today for applications that require precision and stability. When combined with the hermetic sealing and oil filling, the H series resistors become one of the most precise and stable resistors available. • Non inductive, non capacitive design With accuracies of 0.001 %, a resistance range from 5 Ω to 1.84 MΩ, and long term shelf life of less than 2 ppm, these devices are virtually secondary standards that can be carried in sets for daily or periodic calibration of factory measurement equipment. • Any value available within resistance range (e.g. 1K234) • Current noise: < - 40 dB • Thermal EMF: 0.05 µV/°C typical • Voltage coefficient: < 0.1 ppm/V • Non inductive: < 0.08 µH • Non hot spot design • Terminal finishes available: lead (Pb)-free tin/lead alloy • Impervious to harmful environments - oil-filled • Prototype samples available from 48 h. For more information, please contact [email protected] • For better performances, please see H series (Z) Note Load life stability can be considerably improved through in-house oriented tests RESISTANCE VALUE (Ω) TYPICAL TCR AND MAX. SPREAD (- 55 °C to + 125 °C, + 25 °C ref.) (ppm/°C) 80 to < 1M84 ± 2 ± 2.5 50 to < 80 ± 2 ± 3.5 5 to < 50 FIGURE 1 - POWER DERATING CURVE Percent of Rated Power TABLE 1 - TOLERANCE AND TCR VERSUS RESISTANCE VALUE + 100 - 55 °C + 75 + 50 + 25 0 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 Ambient Temperature (°C) ± 2 ± 4.5 * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63006 Revision: 14-Nov-07 For any questions, contact: [email protected] www.vishay.com 1 H Series Vishay Foil Resistors Hermetically Sealed High Precision Bulk Metal® Foil Technology Resistors with TCR of ± 2 ppm/°C, Tolerance of ± 0.001 % and Load Life Stability of ± 0.005 % FIGURE 2 - TRIMMING TO VALUES (Conceptual Illustration) FIGURE 3 - FOIL RESISTOR TYPICAL TCR CURVE + 150 + 100 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 Change in Current Direction ΔR + 50 C Alloy 2 ppm/°C 0 R (ppm) - 50 - 100 2 ppm/°C - 150 - 200 - 50 - 55 - 25 0 + 25 + 50 + 75 + 100 + 125 Temperature (°C) Note: Foil shown in black, etched spaces in white TABLE 2 - MODEL SELECTION RESISTANCE RANGE (Ω) STANDARD RESISTANCE MAXIMUM POWER AVERAGE TOLERANCE CONSTRUCTION WEIGHT WORKING RATING BRIEF TIGHTEST LOOSEST VOLTAGE2) at + 25 °C (g) (Ω) (%) VHP202 5 to 100K > 100K to 150K 300 0.3 W 0.2 W 1.4 Oil-filled, tinned copper leads, nickel shell, kovar and glass header VHA412 5 to 100K > 100K to 150K 250 0.3 W 0.2 W VHA414 5 to 200K > 200K to 335K 350 MODEL NUMBER 1K to 1) ± 0.001 ± 0.1 INCHES mm W: 0.185 ± 0.020 L: 0.435 ± 0.020 H: 0.430 ± 0.020** LL: 1.000 ± 0.125 LS: 0.150 ± 0.0104) ST: 0.095 max. 4.70 ± 0.51 11.05 ± 0.51 10.92 ± 0.51 25.4 ± 3.18 3.81 ± 0.25 2.41 max. 4.6 L: 0.625 ± 0.031 D: 0.375 ± 0.031 LL: 1.000 min. 15.88 ± 0.79 9.53 ± 0.79 25.4 min. 0.5 W 0.3 W 7.3 L: 1.000 ± 0.031 D: 0.375 ± 0.031 LL: 1.000 min. 25.4 ± 0.79 9.53 ± 0.79 25.4 min. 350 0.75 W 0.4 W 6.3 L: 0.625 ± 0.031 D: 0.500 ± 0.031 LL: 1.000 min. 15.88 ± 0.79 12.7 ± 0.79 25.4 min. 500 1.0 W 0.5 W 1.25 W 0.6 W 1.5 W 0.7 W 9.2 Oil-filled, tinned copper leads, L: 1.000 ± 0.031 tinned brass shell, D: 0.500 ± 0.031 kovar and LL: 1.000 min. glass end bells 25.4 ± 0.79 12.7 ± 0.79 25.4 min. 600 1.75 W 0.8 W 2.0 W 0.9 W 2.25 W 1.0 W 2.5 W 1.1 W 2.5 W 1.2 W 13.5 L: 1.500 ± 0.031 D: 0.500 ± 0.031 LL: 1.000 min. 38.1 ± 0.79 12.7 ± 0.79 25.4 min. 500 to < 1K ± 0.0025 ± 0.1 VHA512* VHA516-4* VHA516-5* VHA516-6* 5 to 300K > 300K to 500K 5 to 400K > 400K to 668K 5 to 500K > 500K to 835K 5 to 600K > 600K to 1M 50 to < 500 ± 0.005 ± 0.1 30 to < 50 ± 0.01 ± 0.1 20 to < 30 ± 0.02 ± 0.1 10 to < 20 ± 0.05 ± 0.1 5 to < 10 ± 0.1 ± 0.1 5 to 700K > 700K to 1M17 5 to 800K VHA518-8* > 800K to 1M34 5 to 900K VHA518-9* > 900K to 1M5 5 to 1.0M VHA518-10* > 1.0M to 1M67 5 to 1.0M VHA518-11* > 1.0M to 1M84 DIMENSIONS3) VHA518-7* Notes * Available in a 4-lead terminal ** 0.375 H available See next page for numbered footnotes www.vishay.com 2 For any questions, contact: [email protected] Document Number: 63006 Revision: 14-Nov-07 H Series Hermetically Sealed High Precision Bulk Metal® Foil Vishay Foil Resistors Technology Resistors with TCR of ± 2 ppm/°C, Tolerance of ± 0.001 % and Load Life Stability of ± 0.005 % FIGURE 4 - STANDARD IMPRINTING AND DIMENSIONS Front View L H VISHAY XXXX VHP202 Rear View W Lead Material #22 AWG Round Solder Coated Copper Resistance Value Code 100R01 0.01% XXXX Model Number D VISHAY XXXX Tolerance Serial No. Date Code 07 10 Year Week L LL ST Date Code 07 06 Year Week LL LS Lead Material #22 AWG Round Solder Coated Copper Model No. VHA412 100R01 0.005% Resistance Value Code Tolerance TABLE 3 - “H” SERIES SPECIFICATIONS Stability8) Load life at 2000 h ± 0.002 % maximum ΔR at 0.1 W per chip and at + 60 °C Shelf life ± 2 ppm (0.0002 %) for at least 10 years Current Noise < - 40 dB High Frequency Operation Rise time 1.0 ns without ringing Inductance (L)5) 0.1 µH maximum; 0.08 µH typical Capacitance (C) 1.0 pF maximum; 0.5 pF typical Voltage Coefficient < 0.1 ppm/V6) Thermal EMF7) 0.1 µV/°C maximum; 0.05 µV/°C typical; 1 µV/W maximum Hermeticity 10-7 atmospheric cc/s maximum Notes 1. Upper end of resistance range varies with model selected (i.e. VHP202; the range is to 150 kΩ; VHA518-10, the range is to 1M67 Ω) per table 2 2. Not to exceed power rating of resistor 3. Insulating sleeve - a special case insulating plastic sleeve is available on VHA models. See table 4 for instructions on how to specify 4. 0.200" (5.08 mm) lead spacing available - specify VH202J 5. Inductance (L) due mainly to the leads 6. The resolution limit of existing test equipment (within measurement capability of the equipment, or “essentially zero”) 7. µV/°C relates to EMF due to lead temperature difference and µV/W due to power applied to the resistor 8. Load life ΔR maximum. Can be reduced through in-house oriented processes Document Number: 63006 Revision: 14-Nov-07 For any questions, contact: [email protected] www.vishay.com 3 H Series Vishay Foil Resistors Hermetically Sealed High Precision Bulk Metal® Foil Technology Resistors with TCR of ± 2 ppm/°C, Tolerance of ± 0.001 % and Load Life Stability of ± 0.005 % TABLE 4 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y0019120K500V9L (preferred part number format) DENOTES PRECISION VALUE AER* Y R=Ω K = kΩ M = MΩ 0 = standard 1 = tin/lead with plastic sleeve 9 = lead (Pb)-free 19 = lead (Pb)-free with plastic sleeves 2 - 999 = custom Y 0 0 1 9 1 2 0 K 5 0 0 V 9 L PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 0024 = VHP202 and VH202C 0019 = VHA412 0025 = VHA414 0023 = VHA512 0104 = VHA516-4 0105 = VHA516-5 0106 = VHA516-6 0107 = VHA518-7 0108 = VHA518-8 0109 = VHA518-9 0110 = VHA518-10 0111 = VHA518-11 S = ± 0.001 % U = ± 0.002 % X = ± 0.0025 % 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 FOR EXAMPLE: ABOVE GLOBAL ORDER Y0019 120K500 V 9 L: TYPE: VHA412 VALUE: 120.5 kΩ ABSOLUTE TOLERANCE: ± 0.005 % TERMINATION: lead (Pb)-free PACKAGING: bulk pack HISTORICAL PART NUMBER: VHA412T 120K50 V B (will continue to be used) VHA412 T 120K50 V B PACKAGING B = bulk pack MODEL TERMINATION PLASTIC SLEEVE OHMIC VALUE TOLERANCE VHP202 and VH202C VHA412 VHA414 VHA512 VHA516-4 VHA516-5 VHA516-6 VHA518-7 VHA518-8 VHA518-9 VHA518-10 VHA518-11 T = lead (Pb)-free None = tin/lead P = plastic sleeve None = standard 120K50 = 120.5 kΩ S = ± 0.001 % U = ± 0.002 % X = ± 0.0025 % V = ± 0.005 % T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % Note * For non-standard requests, please contact application engineering. www.vishay.com 4 For any questions, contact: [email protected] Document Number: 63006 Revision: 14-Nov-07 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. 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