H Series Vishay Foil Resistors Bulk Metal(R) Foil Technology Hermetically Sealed Resistors, Metrology/Laboratory FEATURES * Nominal Temperature Coefficient of Resistance: + 0.6ppm/C (0C to + 25C); - 0.6ppm/C (+ 25C to + 60C); + 2.2ppm/C (- 55C to + 25C); - 1.8ppm/C (+ 25C to + 125C) Product may not be to scale * Load-Life Stability: 0.002% Max R at 0.1 W and + 60C, no burn-in. With accuracies of 0.001% and a resistance range from 5 ohms to 1.84 megohms and long term shelf life of less than 5ppm, these devices are virtually secondary standards that can be carried in sets for daily or periodic calibration of factory measurement systems. * Power Rating: 0.3 to 2.5 watt at + 25C (depending on model). * Resistance Tolerance (Initial Resistance Accuracy): 0.001% tightest. * Resistance Range: 5 to 1M84 . * Current Noise: < 0.010V (RMS)/Volt of Applied Voltage. * Thermal EMF: 0.1V/C Max; 0.05V/C Typ; VHP202, 1V/W. * The most precise and stable resistors available. * Impervious to harmful environments -- oil filled. FIGURE 1 - 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 Date Code 10 01 Year Week Serial No. L LL ST Date Code 01 06 Year Week Model No. LL LS VHA412 100R01 0.005% Lead Material #22 AWG Round Solder Coated Copper Resistance Value Code Tolerance TABLE 1 - ORDERING INFORMATION Please specify Vishay H Series resistors as follows: (See Table 2 for details). Example: VHP202 100R01 0.005% MODEL NO. RESISTANCE VALUE TOLERANCE Resistance Value, in ohms, is expressed by a series of 6 characters, 5 of which represent significant digits while the 6th is a dual purpose letter that designates both the multiplier and the location of the comma or decimal. RESISTANCE RANGE* LETTER DESIGNATOR MULTIPLIER FACTOR EXAMPLE 5 to < 1K 1K to < 1M 1M to 1M 84 R K M x1 x 103 x 106 100R01 = 100.01 15K231 = 15,231 1M500 = 1,500,000 SALES * ISRAEL: foilsales.israel@vishay.com * FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com * AMERICAS: foilsales.usa@vishay.com * ASIA/JAPAN: foilsales.asia@vishay.com * UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com * GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com For technical questions in the Americas, contact foilsupport1@vishay.com Document Number: 63006 For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com Revision 09-Mar-05 www.vishay.com 133 THROUGH HOLE The H series resistors are oil filled, hermetically sealed ultra precision resistors. The function of hermetic sealing is to eliminate the ingress of moisture and oxygen both of which play a roll in the long term degradation of unsealed resistors. A further enhancement in both short and long term stability is achieved by oil filling. The oil also acts as a thermal conductor allowing the device to accept short periods of overload without degradation. H Series Bulk Metal(R) Foil Technology Hermetically Sealed Resistors, Metrology/Laboratory Vishay Foil Resistors TABLE 2 - MODEL SELECTION DIMENSIONS3 RESISTANCE STANDARD RESISTANCE MAXIMUM POWER AVERAGE CONSTRUCTION RANGE TOLERANCE WORKING RATING WEIGHT BRIEF () TIGHTEST LOOSEST VOLTAGE2 AT +25C IN GRAMS Inches Oil-filled, tinned copper W: L: leads, H: nickel shell, LL: kovar and LS: glass ST: header. mm VHP202 5 to 100K >100K to 150K 300 0.3 W 0.2 W 1.4 VHA412 5 to 100K >100K to 150K 250 0.3 W 0.2 W 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 VHA414 5 to 200K >200K to 335K 350 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 L: 1.000 0.031 D: 0.500 0.031 LL: 1.000 Min 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 1 0.001% 0.1% 500 to <1K 0.0025% 0.1% 1K to VHA512* VHA516-4* VHA516-5* VHA516-6* 50 to <500 0.005% 0.1% 5 to 300K >300K to 500K 30 to <50 0.01% 0.1% 5 to 400K >400K to 668K 5 to 500K >500K to 835K 5 to 600K >600K to 1M 20 to <30 0.02% 0.1% 10 to <20 0.05% 0.1% 5 to <10 0.1% 0.1% VHA518-7* 5 to 700K >700K to 1M17 VHA518-8* 5 to 800K >800K to 1M34 VHA518-9* 5 to 900K >900K to 1M5 VHA518-10* 5 to 1.0M >1.0M to 1M67 VHA518-11* 5 to 1.0M >1.0M to 1M84 *Available in a 4-lead terminal **0.375 H available See next page for numbered footnotes Oil-filled, tinned copper leads, tinned brass shell, kovar and glass end bells. 0.185 0.020 4.70 0.51 0.435 0.020 11.05 0.51 0.430 0.020** 10.92 0.51 1.000 0.125 25.4 3.18 0.150 0.0104 3.81 0.25 0.095 Max 2.41 Max FIGURE 2 - POWER DERATING CURVE Percent of Rated Power THROUGH HOLE MODEL NUMBER +100 -55C +75 +50 +25 0 -50 -25 0 +25 +50 +75 +100 +125 +150 +175 Ambient Temperature (C) SALES * ISRAEL: foilsales.israel@vishay.com * FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com * AMERICAS: foilsales.usa@vishay.com * ASIA/JAPAN: foilsales.asia@vishay.com * UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com * GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com www.vishay.com 134 For technical questions in the Americas, contact foilsupport1@vishay.com Document Number: 63006 For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com Revision 09-Mar-05 H Series (R) Bulk Metal Foil Technology Vishay Foil Resistors Hermetically Sealed Resistors, Metrology/Laboratory TABLE 3 - "H" SERIES SPECIFICATIONS5 TEMPERATURE COEFFICIENT OF RESISTANCE Nominal TCR6 (See Fig. 1 and 2 in data sheet "7 Technical Reasons to Specify Vishay Bulk Metal(R) Foil Resistive Components.") + 0.6ppm/C (0C to + 25C) - 0.6ppm/C (+ 25 to + 60C) + 2.2ppm/C (- 55C to + 25C) - 1.8ppm/C (+ 25C to + 125C) Standard TCR Spread from Nominal7 (See Fig. 5 and 6 in data sheet "7 Technical Reasons to Specify Vishay Bulk Metal(R) Foil Resistive Components.") 1.5ppm/C (0C to + 25C and + 25C to + 60C) 2.0ppm/C (- 55C to + 25C and + 25C to + 125C) Maximum TCR Spread from Nominal8 (See Fig. 5 and 6 in data sheet "7 Technical Reasons to Specify Vishay Bulk Metal(R) Foil Resistive Components.") Selected9 TCR Tracking10 (Closest Spread) 2.5ppm/C (0C to + 25C and + 25C to + 60C) 2.3ppm/C (- 55C to + 25C and + 25C to + 125C) 0.5ppm/C Stability Load Life at 2,000 hrs. Shelf Life 0.002% maximum R @ 0.1 Watt per chip and at + 60C 5ppm (0.0005%) Maximum R after 1 year 10ppm (0.001%) Maximum R after 3 years Current Noise < 0.010V (RMS)/Volt of applied voltage (- 40dB) High Frequency Operation Rise/Decay Time Inductance (L)11 Capacitance (C) 1.0 ns at 1K 0.1H maximum; 0.08H typical5 1.0pF maximum; 0.5pF typical5 Voltage Coefficient < 0.1ppm/V12 Thermal EMF13 0.1V/C Maximum; 0.05V/C Typical; 1V/watt Maximum Hermeticity NOTES: 1. Upper end of resistance range varies with model selected (i.e. VHP202; the range is to 150Kohms; VHA518-10, the range is to 1M67 ohms). 2. Not to exceed power rating of resistor. 3. Insulating Sleeve-- a special case insulating plastic sleeve is available on VHA models-- specify letter "P" as a suffix to model number (i.e. VHA412P). 4. 0.200" (5.08mm) lead spacing available-- specify VH202J. 5. Maximum is 1.0% A.Q.L. standard for all specifications except TCR. (For TCR information, see notes 6-10.) 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 Nominal TCR is defined as the chord slopes of the relative change of resistance/temperature, expressed in ppm (parts per million), called (RT) curve from 0C to + 25C and + 25C to + 60C ("Instrument" Range); and from - 55C to + 25C and + 25C to + 125C ("Military" Range). These specifications and the definition of Nominal TCR apply to all resistance values including low-value resistors. 7. Vishay Standard TCR Spread is defined as a designers reference which represents that at least 92% of the units, and 82% of the lots, supplied by Vishay will be within the stated band centered on the nominal curve. This definition of the Vishay Standard TCR Spread from Nominal applies to all resistance values. However, as the resistance value decreases below 80, the Vishay Standard TCR Spread from Nominal specification starts to increase. (See Figure 3 in data sheet "7 Technical Reasons to Specify Vishay Bulk Metal(R) Foil Resistive Components.") 10-7 Atmospheric cc/sec Maximum 8. 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 2.5ppm/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 data sheet "7 Technical Reasons to Specify Vishay Bulk Metal(R) Foil Resistive Components.") 9. Selected TCR Tracking is available for specially ordered lots of resistors. The selected TCR tracking can be 3, 2, 1 and as close as 0.5ppm/C throughout the full temperature range. 10. 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 - 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 1.5ppm/C about a nominal, the tracking, as defined above, will be 3ppm/C. 11. Inductance (L) due mainly to the leads. 12. The resolution limit of existing test equipment (within the measurement capability of the equipment, or "essentially zero.") 13. V/C relates to EMF due to lead temperature difference and V/watt due to power applied to the resistor. 14. Load life R max. can be reduced through burn-in procedure. SALES * ISRAEL: foilsales.israel@vishay.com * FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com * AMERICAS: foilsales.usa@vishay.com * ASIA/JAPAN: foilsales.asia@vishay.com * UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com * GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com For technical questions in the Americas, contact foilsupport1@vishay.com Document Number: 63006 For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com Revision 09-Mar-05 www.vishay.com 135 THROUGH HOLE 14