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.
Part Number
V
max
Continuous
Operating
Voltage
(VDC)
Voltage
Division
(RT : R2)
Resistance
R1
R2
RT = R1 + R2
Ratio
Tolerance
(RT : R2)
Ratio T.C.
(RT : R2)
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.
Ratio V.C.
(RT : R2)
Fig.
Specifications:
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
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
990 K
990 K
1.98 Meg
1.98 Meg
9.99 Meg
9.99 Meg
9.9 Meg
9.9 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
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
Absolute Tolerance:
±0.10% for all resistors,
measured at +23°C ±2°C.
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,
ΔR
taken at -40°C and +85°C.
Ratio Temperature Coefficient (RT : R2):
See table.
Ratio Temperature Coefficient from -40°C to +85°C.
Ratio Voltage Coefficient (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.
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.
Operating Temperature:
-40°C to +85°C
1,000 : 1 19.98 Meg
1,000 : 1 19.98 Meg
100 : 1
100 : 1
1,000 : 1
100 : 1
19.8 Meg
19.8 Meg
9.99 Meg
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
FIG. 1
R1
R2
.500
±.125
(12.7
±3.18)
.155
±.025
(3.94
±..64)
.500
±.020
(12.7
±.51)
Marking Side
1.500
±.020
(38.1
±.51)
CADDOCK
USVD2-A20M-010-02
0422
1
Pin 1
Input
2
Pin 2
To be held
near ground
3
4
Pin 1
.032 DIA.
(.81 DIA.)
.200
±.020
(5.08
±.51)
Circuit Board
Trace
.115
±.020
(2.92
±.51)
.800
±.020
(20.32
±.51)
1.350
±.020
(34.29
±.51)
Custom Type USVD and Type HVD
Voltage Dividers:
For high quantity applications
FIG. 2
R1
R2
Marking Side
1.500
±.020
(38.10
±.51)
0.110 Max.
(2.79 Max.)
0.610 Max.
(15.5 Max.)
0.150
±.040
(3.81
±1.0)
0.900
(22.86)
0.100 (2.54)
0.200 (5.08)
0.020
±.002
(0.51
±.05)
Pin1
CADDOCK
CADDOCK
HVD5-A50M-050-05
HVD5-A50M-050-05
0247
0409
(greater than 1000 per year) these voltage dividers
can be produced with custom voltage division ratios and
ratio specifications that optimize the performance and
the cost for your application.
See note
0.010
±.002
(0.25
±.05)
1 2 3
Pin 1, 2, and 3
Input
4 5
6
0.050
±0.015
Pin 6
(1.27
±0.38)
To be held
0.100 (2.54)
near ground
0.100 (2.54)
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).
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
© 2004 Caddock Electronics, Inc.
CADDOCK
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
Phone: (951) 788-1700
Fax: (951) 369-1151
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