sales and applications engineering 17271 north umpqua hwy. roseburg, oregon 97470-9422 phone: (541) 496-0700 fax: (541) 496-0408 28_il132.0717 type usvd ultra-precision voltage dividers have the very highest precision available in voltage dividers in the range of 450 volts dc up to 2000 volts dc. these dividers are formed by bonding together two selected type usf ultra-precision resistors. the precise selection of these high performance resistors, which form the voltage dividers, makes possible the outstanding voltage division performance. ratio tolerance as tight as 0.01% and ratio tc of 2ppm/c . type usvd and type hvd ultra-precision voltage dividers - 450 volts to 5 kv specifcations: absolute tolerance: 0.10% for all resistors, measured at +23c 2c. ratio tolerance (rt : r2): see table. ratio tolerance measured at +23c 2c, at 100 volts dc applied to the divider. absolute tc: usvd2: 10 ppm/c, hvd5: 30 ppm/c, referenced to +25c, ? r taken at -40c and +85c. ratio temperature coeffcient (rt : r2): see table. ratio temperature coeffcient from -40c to +85c. ratio voltage coeffcient (rt : r2): see table. maximum ratio v.c. measured at 10% of vmax. to 100% of vmax. voltage rating: maximum voltage (volts dc) applied to rt = (r1 + r2). see table. load life stability: ratio stability with maximum continuous operating voltage applied to the divider for 1000 hours at +85c, ratio change 0.02% max. overvoltage: 1.5 times rated voltage for 5 seconds, ratio change 0.02% max. thermal shock: mil-std-202. method 107, cond. a, except minimum temperature is -40c, ratio change 0.02% max. operating temperature: -40c to +85c type hvd ultra-precision voltage dividers are monolithic voltage dividers built with ceramic sandwich construction. these voltage dividers have ultra-precision performance in the range of 1500 volts dc to 5000 volts dc, with a ratio tolerance of 0.05% and ratio tc of 5ppm/c . these dividers are ideal for high performance voltage division applications in medical equipment, laboratory equipment, analytical instruments, etc. part number resistance r1 r2 usvd2 - b1m - 010 - 02 usvd2 - b1m - 025 - 02 usvd2 - b2m - 010 - 02 usvd2 - b2m - 025 - 02 usvd2 - a10m - 010 - 02 usvd2 - a10m - 025 - 02 usvd2 - b10m - 010 - 02 usvd2 - b10m - 025 - 02 usvd2 - a20m - 010 - 02 usvd2 - a20m - 025 - 02 usvd2 - b20m - 010 - 02 usvd2 - b20m - 025 - 02 hvd5 - a10m - 050 - 05 hvd5 - b10m - 050 - 05 hvd5 - a20m - 050 - 05 hvd5 - b20m - 050 - 05 hvd5 - a50m - 050 - 05 hvd5 - b50m - 050 - 05 v max voltage division (rt : r2) rt = r1 + r2 ratio tolerance (rt : r2) ratio t.c. (rt : r2) ratio v.c. (rt : r2) 450 450 650 650 1400 1400 1400 1400 2000 2000 2000 2000 1500 1500 2500 2500 5000 5000 100 : 1 100 : 1 100 : 1 100 : 1 1,000 : 1 1,000 : 1 100 : 1 100 : 1 1,000 : 1 1,000 : 1 100 : 1 100 : 1 1,000 : 1 100 : 1 1,000 : 1 100 : 1 1,000 : 1 100 : 1 990 k 990 k 1.98 meg 1.98 meg 9.99 meg 9.99 meg 9.9 meg 9.9 meg 19.98 meg 19.98 meg 19.8 meg 19.8 meg 9.99 meg 9.9 meg 19.98 meg 19.8 meg 49.95 meg 49.5 meg 10 k 10 k 20 k 20 k 10 k 10 k 100 k 100 k 20 k 20 k 200 k 200 k 10 k 100 k 20 k 200 k 50 k 500 k 1 meg 1 meg 2 meg 2 meg 10 meg 10 meg 10 meg 10 meg 20 meg 20 meg 20 meg 20 meg 10 meg 10 meg 20 meg 20 meg 50 meg 50 meg 0.01% 0.025% 0.01% 0.025% 0.01% 0.025% 0.01% 0.025% 0.01% 0.025% 0.01% 0.025% 0.05% 0.05% 0.05% 0.05% 0.05% 0.05% 2 ppm/c 2 ppm/ c 2 ppm/c 2 ppm/c 2 ppm/c 2 ppm/c 2 ppm/c 2 ppm/c 2 ppm/c 2 ppm/c 2 ppm/c 2 ppm/c 5 ppm/ c 5 ppm/c 5 ppm/c 5 ppm/c 5 ppm/c 5 ppm/c 0.05 ppm/v 0.05 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.02 ppm/v 0.04 ppm/v 0.04 ppm/v fig. 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 continuous operating voltage (vdc) pin 1 pin 1 input pin 2 to be held near ground pin 1, 2, and 3 input pin 6 to be held near ground pin1 see note note: lead form detail provides interference in the circuit board hole to achieve a vertical mount of the device. recommended circuit board hole is nominally 0.039 inch (.99 mm). circuit board trace 4 2 1 3 r1 r2 marking side 1.500 .020 (38.1 .51) .500 .020 (12.7 .51) .200 .020 (5.08 .51) .800 .020 (20.32 .51) 1.350 .020 (34.29 .51) .032 dia. (.81 dia.) caddock usvd2-a20m-010-02 0622 .115 .020 (2.92 .51) 0.110 max. (2.79 max.) 0.010 .002 (0.25 .05) caddock hvd5-a50m-050-05 0247 0.050 0.015 (1.27 0.38) 0.610 max. (15.5 max.) 0.100 (2.54) 0.150 .040 (3.81 1.0) 0.020 .002 (0.51 .05) 0.900 (22.86) 0.100 (2.54) 0.100 (2.54) 0.200 (5.08) 1.500 .020 (38.10 .51) .500 .125 (12.7 3.18) fig. 1 fig. 2 caddock hvd5-a50m-050-05 0609 marking side .155 .025 (3.94 ..64) 1 4 6 r1 r2 2 3 5 custom type usvd and type hvd voltage dividers: for high quantity applications (greater than 1000 per year) these voltage dividers can be produced with custom voltage division ratios and ratio specifcations that optimize the performance and the cost for your application. ? 2003-2017 caddock electronics, inc. e-mail: caddock@caddock.com ? web: www.caddock.com for caddock distributors listed by country see caddock.com/contact/dist.html electronics, inc.
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