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HZ Series (Z-Foil) with Zero TCR Vishay Foil Resistors www.foilresistors.comFor any questions, contact: foil@vishaypg.comDocu

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Content	HZ Series (Z-Foil) with Zero TCR Vishay Foil Resistors www.foilresistors.comFor any questions, contact: foil@vishaypg.comDocument Number: 63120 2Revision: 25-Mar-10 Notes: Available in a 4-lead terminal 0.375 H available - See next page for numbered footnotes FIGURE 2 -TRIMMING TO VALUES (Conceptual Illustration) TABLE 2 - MODEL SELECTION MODEL NUMBER RESISTANCE RANGE (:) STANDARD RESISTANCE TOLERANCE PER RANGE MAXIMUM WORKING VOLTAGE (2) POWER RATING at + 25 °C AVERAGE WEIGHT (g) CONSTRUCTION BRIEF DIMENSIONS (3) RANGE (:)TIGHTEST (%)INCHESmm VHP202Z10 to 66K66K to 100K 1K to (1) 500 to < 1K50 to < 50030 to < 5020 to < 3010 to < 205 to < 10 ± 0.001 ± 0.0025 ± 0.005 ± 0.01 ± 0.02 ± 0.05± 0.1 3000.3 W0.2 W1.4 Oil-filled, tinned copper leads, nickel shell, kovar and glass header W: 0.162 ± 0.020L: 0.415 ± 0.020H: 0.430 ± 0.020LL: 1.000 ± 0.125LS: 0.150 ± 0.010 (4) ST: 0.095 max. 4.11 ± 0.5110.54 ± 0.5110.92 ± 0.5125.4 ± 3.183.81 ± 0.252.41 max. VHA412Z10 to 66K66K to 100K2500.3 W0.2 W4.6 Oil-filled,tinned copper leads, tinned brass shell, kovar andglass end bells L: 0.625 ± 0.031D: 0.375 ± 0.031LL: 1.000 min. 15.88 ± 0.799.53 ± 0.7925.4 min. VHA414Z5 to 120K> 120K to 200K3500.5 W0.3 W7.3L: 1.000 ± 0.031D: 0.375 ± 0.031LL: 1.000 min. 25.4 ± 0.799.53 ± 0.7925.4 min. VHA512Z5 to 180K180K to 300K3500.75 W0.4 W6.3L: 0.625 ± 0.031D: 0.500 ± 0.031LL: 1.000 min. 15.88 ± 0.7912.7 ± 0.7925.4 min. VHA516-4Z* VHA516-5Z* VHA516-6Z* 5 to 240K> 240K to 400K5 to 300K> 300K to 500K5 to 360K> 360K to 600K 500 1.0 W0.5 W1.25 W0.6 W1.5 W0.7 W 9.2L: 1.000 ± 0.031D: 0.500 ± 0.031LL: 1.000 min. 25.4 ± 0.7912.7 ± 0.7925.4 min. VHA518-7Z* VHA518-8Z* VHA518-9Z* VHA518-10Z* VHA518-11Z* 5 to 420K> 420K to 700K5 to 480K> 480K to 800K5 to 540K> 540K to 900K5 to 600K> 600K to 1.0M5 to 660K> 660K to 1.1M 600 1.75 W0.8 W2.0 W0.9 W2.25 W1.0 W2.5 W1.1 W2.5 W1.2 W 13.5L: 1.500 ± 0.031D: 0.500 ± 0.031LL: 1.000 min. 38.1 ± 0.7912.7 ± 0.7925.4 min. Note: Foil shown in black, etched spaces in white MutualInductanceReduction dueto OpposingCurrent inAdjacent Lines Current PathBefore Trimming InterloopCapacitanceReductionin Series Trimming ProcessRemoves this Materialfrom Shorting Strip AreaChanging Current Pathand Increasing Resistance Current PathAfter Trimming FIGURE 3 - TYPICAL RESISTANCE/ TEMPERATURE CURVE + 500 + 200 + 100 0 - 100 - 200 - 300 - 500 - 55- 25+ 25+ 60+ 75+ 100+ 125 Ambient Temperature (°C) ∆R R(ppm) 0 0.05 ppm/°C - 0.1 ppm/°C0.1 ppm/°C 0.14 ppm/°C 0.2 ppm/°C- 0.16 ppm/°C- 400 + 300 + 400 TCR Chord Slopes for Different Temperature Ranges FIGURE 4 - POWER DERATING CURVE + 100 + 75 + 50 + 25 0 - 50- 250+ 25+ 50+ 75+ 100+ 125+ 150+ 175 Percent of Rated Power - 55 °C Ambient Temperature (°C)
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