© 2003-2017 Caddock Electronics, Inc.

Sales and Applications Engineering

17271 North Umpqua Hwy.

Roseburg, Oregon 97470-9422

Phone: (541) 496-0700

Fax: (541) 496-0408

e-mail: caddock@caddock.com • web: www.caddock.com

For Caddock Distributors listed by country see caddock.com/contact/dist.html

ELECTRONICS, INC.

28_IL132.0717

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

Specifications:

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,

at 100 volts DC applied to the divider.

Absolute TC: USVD2: 10 ppm/°C, HVD5: 30 ppm/°C,

referenced to +25°C, ∆R 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

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

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

(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.