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
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
bonding together two selected Type USF Ultra-Precision Resistors. The 1500 volts DC to 5000 volts DC, with a Ratio Tolerance of 0.05% and
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.
Ratio TC of 5ppm/C. These dividers are ideal for high performance
voltage division applications in medical equipment, laboratory equipment,
analytical instruments, etc.
V
max
Specifications:
Resistance
R2 RT = R1 + R2
Voltage
Division
(RT : R2)
Ratio
Tolerance
(RT : R2)
Continuous
Operating
Voltage
Ratio T.C.
(RT : R2)
Ratio V.C.
Fig.
Part Number
(RT : R2)
R1
(VDC)
Absolute Tolerance: 0.10% for all resistors,
measured at +23C 2C.
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
100 : 1
100 : 1
990 K
10 K
10 K
20 K
20 K
10 K
10 K
1 Meg
1 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
990 K
Ratio Tolerance (RT : R2): See table.
Ratio Tolerance measured at +23C 2C,
at 100 volts DC applied to the divider.
650
100 : 1
1.98 Meg
1.98 Meg
9.99 Meg
9.99 Meg
2 Meg
650
100 : 1
2 Meg
1400
1400
1400
1400
2000
2000
2000
2000
1500
1500
2500
2500
5000
5000
1,000 : 1
1,000 : 1
100 : 1
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
Absolute TC: USVD2: 10 ppm/C, HVD5: 30 ppm/C,
referenced to +25C, R taken at -40C and +85C.
9.9 Meg 100 K
9.9 Meg 100 K
Ratio Temperature Coefficient (RT : R2): See table.
Ratio Temperature Coefficient from -40C to +85C.
100 : 1
1,000 : 1 19.98 Meg
1,000 : 1 19.98 Meg
20 K
20 K
Ratio Voltage Coefficient (RT : R2): See table.
Maximum Ratio V.C. measured at 10% of Vmax.
to 100% of Vmax.
100 : 1
100 : 1
19.8 Meg 200 K
19.8 Meg 200 K
1,000 : 1
9.99 Meg
9.9 Meg 100 K
20 K
19.8 Meg 200 K
1,000 : 1 49.95 Meg 50 K
100 : 1 49.5 Meg 500 K
10 K
Voltage Rating: Maximum voltage (volts DC)
applied to RT = (R1 + R2). See table.
100 : 1
1,000 : 1 19.98 Meg
100 : 1
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.
FIG. 1
Marking Side
1.500 .020
(38.1 .51)
.155 .025
(3.94 ..64)
Thermal Shock: Mil-Std-202. Method 107, Cond. A,
except minimum temperature is -40C, ratio change
0.02% max.
R1
R2
.500 .020
(12.7 .51)
CADDOCK
USVD2-A20M-010-02
0248
Operating Temperature: -40C to +85C
.500 .125
(12.7 3.18)
2
3
.032 DIA.
(.81 DIA.)
1
4
.200 .020
(5.08 .51)
Pin 2
To be held
near ground
Pin 1
Input
Pin 1
.800 .020
Custom Type USVD and Type HVD
Circuit Board
Trace
(20.32 .51)
.115 .020
(2.92 .51)
1.350 .020
(34.29 .51)
Voltage Dividers: For high quantity applications
(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.
FIG. 2
Marking Side
1.500 .020
(38.10 .51)
0.110 Max.
(2.79 Max.)
R1
R2
CADDOCK
CADDOCK
0.610 Max.
(15.5 Max.)
HVD5-A50M-050-05
HVD5-A50M-050-05
0247
0248
See note
Pin1
0.150 .040
(3.81 1.0)
1
2
3
4
5
6
0.010 .002
(0.25 .05)
0.020 .002
(0.51 .05)
0.050 0.015
(1.27 0.38)
0.900
(22.86)
Pin 6
To be held
near ground
Pin 1, 2, and 3
Input
0.100 (2.54)
0.200 (5.08)
0.100 (2.54)
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
Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
Phone: (951) 788-1700
Fax: (951) 369-1151
Fax: (541) 496-0408
Hurst Green • Surrey • RH8 9AX • UK
Email • sales@rhopointcomponents.com
Web • www.rhopointcomponents.com
UK & Ireland
Distributors
Tel: +44 (0) 870 608 1188
© 2004 Caddock Electronics, Inc.
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