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Type USVD and Type HVD
Ultra-Precision Voltage Dividers - 450 Volts to 5 KV
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 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
USVD2 - B1M - 010 - 02
V max
Continuous
Operating
Voltage
(VDC)
450
Voltage
Division
(RT : R2)
100 : 1
R1
990 K
Resistance
R2 RT = R1 + R2
10 K 1 Meg
Ratio
Tolerance
(RT : R2)
0.01%
Ratio T.C.
(RT : R2)
2 ppm/ ° C
Ratio V.C.
(RT : R2)
0.05 ppm/V
Fig.
1
Speci?cations:
Absolute Tolerance: ±0.10% for all resistors,
measured at +23°C ±2°C.
USVD2 - B1M - 025 - 02
USVD2 - B2M - 010 - 02
USVD2 - B2M - 025 - 02
USVD2 - A10M - 010 - 02
USVD2 - A10M - 025 - 02
USVD2 - B10M - 010 - 02
450
650
650
1400
1400
1400
100 : 1
100 : 1
100 : 1
1,000 : 1
1,000 : 1
100 : 1
990 K
1.98 Meg
1.98 Meg
9.99 Meg
9.99 Meg
9.9 Meg
10 K
20 K
20 K
10 K
10 K
100 K
1 Meg
2 Meg
2 Meg
10 Meg
10 Meg
10 Meg
0.025%
0.01%
0.025%
0.01%
0.025%
0.01%
2 ppm/ ° C
2 ppm/ ° C
2 ppm/ ° C
2 ppm/ ° C
2 ppm/ ° C
2 ppm/ ° C
0.05 ppm/V
0.02 ppm/V
0.02 ppm/V
0.02 ppm/V
0.02 ppm/V
0.02 ppm/V
1
1
1
1
1
1
Ratio Tolerance (RT : R2): See table.
Ratio Tolerance measured at +23°C ±2°C,
with 100 volts DC applied to the divider.
Absolute TC: USVD2: 10 ppm/°C, HVD5: 30 ppm/°C,
referenced to +25°C, Δ R taken at -40°C and +85°C.
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
1400
2000
2000
2000
2000
1500
1500
2500
2500
5000
5000
100 : 1 9.9 Meg
1,000 : 1 19.98 Meg
1,000 : 1 19.98 Meg
100 : 1 19.8 Meg
100 : 1 19.8 Meg
1,000 : 1 9.99 Meg
100 : 1 9.9 Meg
1,000 : 1 19.98 Meg
100 : 1 19.8 Meg
1,000 : 1 49.95 Meg
100 : 1 49.5 Meg
100 K
20 K
20 K
200 K
200 K
10 K
100 K
20 K
200 K
50 K
500 K
10 Meg
20 Meg
20 Meg
20 Meg
20 Meg
10 Meg
10 Meg
20 Meg
20 Meg
50 Meg
50 Meg
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
5 ppm/ ° C
5 ppm/ ° C
5 ppm/ ° C
5 ppm/ ° C
5 ppm/ ° C
5 ppm/ ° C
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
1
1
1
1
1
2
2
2
2
2
2
Ratio Temperature Coef?cient (RT : R2): See table.
Ratio Temperature Coef?cient from -40°C to +85°C.
Ratio Voltage Coef?cient (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 +85°C, ratio change 0.02% max.
FIG. 1
R1
R2
.155 ± .025
(3.94 ± ..64)
.500 ± .020
(12.7 ± .51)
Marking Side
1.500 ± .020
(38.1 ± .51)
CADDOCK
USVD2-A20M-010-02
0422
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 -40°C, ratio change
0.02% max.
1
2
3
4
.500 ± .125
(12.7 ± 3.18)
.032 DIA.
(.81 DIA.)
Operating Temperature: -40°C to +85°C
Pin 6
To be held
near ground
.800 ± .020
0.150 ± .040
0.010 ± .002
Pin 1 Pin 2
Input To be held
near ground
FIG. 2
R1
1 2 3
Pin 1, 2, and 3
Input
4 5
Pin 1
Circuit Board
Trace
R2
Pin1
6
0.050 ± 0.015
(1.27 ± 0.38)
0.100 (2.54)
0.100 (2.54)
.115 ± .020
(2.92 ± .51)
Marking Side
1.500 ± .020
(38.10 ± .51)
CADDOCK
HVD5-A50M-050-05
0409
0247
0.900
(22.86)
0.100 (2.54)
0.200 (5.08)
.200 ± .020
(5.08 ± .51)
(20.32 ± .51)
1.350 ± .020
(34.29 ± .51)
0.110 Max.
(2.79 Max.)
0.610 Max.
(15.5 Max.)
See note
(3.81 ± 1.0)
0.020 ± .002 (0.25 ± .05)
(0.51 ± .05)
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).
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 speci?cations that optimize the performance and
the cost for your application.
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
? 2004 Caddock Electronics, Inc.
e-mail: DOCK
CAD caddock@caddock.com ? web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
Sales and Corporate Of?ce
1717 Chicago Avenue
Riverside, California 92507-2364
Phone: (951) 788-1700
Fax: (951) 369-1151
28_IL132.1004
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