Type USVD Ultra-Precision Voltage Dividers
Voltage Ratings up to 2000 Volts DC • Ratio Tolerance to 0.01% • Ratio TC: 2 ppm/°C
Type USVD Ultra-Precision Voltage Dividers have the highest
precision available in the voltage range of 450 Volts DC to 2000 Volts DC.
These voltage dividers are formed by bonding together two selected USF300
Series Ultra-Precision Resistors. The precise selection of the USF300
Resistors makes possible the outstanding voltage divider performance:• Ratio Tolerance as tight as 0.01%• Ratio TC: 2 ppm/°C
The USVD2 voltage dividers are ideal for high performance DC voltage measurement applications in Test & Measurement Equipment, Medical Equipment, Industrial Equipment, and Laboratory Equipment.
For Ultra-Precision Voltage Dividers, with higher voltage ratings ofup to 5000 Volts DC, see the Type HVD5 Voltage Dividers.
For Voltage Dividers designed for AC Power Quality Monitoring andMetering applications, see the Type VMN Voltage Monitoring Resistor
Networks that provide outstanding precision and long-term stability inelectrical service monitoring applications, with transient voltage conditions.
VmaxVoltageDividerRatio
RT : R2R1R2

RT = R1 + R2Part Number

Maximum
Continuous
Operating
Voltage (VDC)

USVD2-B1M-010-02

450

100 : 1990K

10 K

USVD2-B1M-025-02

450

100 : 1990K

10 K

USVD2-B2M-010-02

650

100 : 1

1.98 Meg

USVD2-B2M-025-02

650

100 : 1

USVD2-A10M-010-02

1400

USVD2-A10M-025-02
USVD2-B10M-010-02
USVD2-B10M-025-02

Specifications:

Ratio
Tolerance(RT : R2)

Ratio TC
(RT : R2)

Ratio VC
(RT : R2)

1 Meg

0.01%

2 ppm/°C

0.05 ppm/V

1 Meg

0.025%

2 ppm/°C

0.05 ppm/V

20 K

2 Meg

0.01%

2 ppm/°C0.02 ppm/V

1.98 Meg

20 K

2 Meg

0.025%

2 ppm/°C0.02 ppm/V

1,000 : 1

9.99 Meg

10 K

10 Meg0.01%

2 ppm/°C0.02 ppm/V

1400

1,000 : 1

9.99 Meg

10 K

10 Meg0.025%

2 ppm/°C0.02 ppm/V

1400

100 : 19.90 Meg

100 K

10 Meg0.01%

2 ppm/°C0.02 ppm/V

1400

100 : 19.90 Meg

100 K

10 Meg0.025%

2 ppm/°C0.02 ppm/V

USVD2-A20M-010-02

2000

1,000 : 1

19.98 Meg

20 K

20 Meg0.01%

2 ppm/°C0.02 ppm/V

USVD2-A20M-025-02

2000

1,000 : 119.98 Meg

20 K

20 Meg0.025%

2 ppm/°C0.02 ppm/V

USVD2-B20M-010-02

2000

100 : 119.80 Meg

200 K

20 Meg0.01%

2 ppm/°C0.02 ppm/V

USVD2-B20M-025-02

2000

100 : 119.80 Meg

200 K

20 Meg0.025%

2 ppm/°C0.02 ppm/V

Resistance

Custom Type USVD Voltage Dividers are formed from USF300 Series
Resistors with Standard Resistance Values to achieve custom Voltage Division Ratios
between 100:1 and 1,000:1: available with an MOQ of 250 pieces. See the Type USF Data
Sheet for a list of Standard Resistance Values.
A customized version of the standard Type USVD Voltage Dividers, that has specifications
adjusted to optimize the performance and cost for your application (such as ratio toleranceof 0.05% and ratio TC of 5 ppm/°C): available with MOQ of 1,000 pieces.
For assistance, contact Caddock Applications Engineering by phone (541-496-0700) oremail (caddock@caddock.com).

.500 ±.020(12.7 ± .51)

R223Pin 2
To be held
near ground.500 ± .125
(12.7 ± 3.18)

41
Circuit BoardTraceCADDOCK

234.115 ±.020(2.92 ±.51)

DIMENSIONS IN INCHES AND (MILLIMETERS)

website: caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html© 2023 Caddock Electronics, Inc.

1.500 ±.020(38.1 ±.51).155 ±.025(3.94 ±.64)

R1Pin 1Input

Shelf Ratio Stability: Less than 20 ppm/yr, typical,
for the first year. Extended Shelf Ratio Stability(10 years) 10 ppm/yr, maximum.
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
Terminal Finish: Matte Tin (Sn)Marking Side

Schematic1

Ratio Tolerance (RT : R2): 0.01% or 0.025%,
measured at +23°C ±2°C, with 100 volts DC applied
to the divider.
Ratio TC (RT : R2): 2 ppm/°C, referenced to +25°C,∆R taken at -40°C and +85°C
Ratio Voltage Coefficient (RT : R2): See table.
Ratio VC measured at 10% to 100% of Vmax.
Absolute Tolerance: ±0.1% for all resistors,
measured at +23°C ±2°C.
Absolute TC: 10 ppm/°C, referenced to +25°C,∆R taken at -40°C and +85°C.
Voltage Rating (Vmax): Maximum Continuous
Operating Voltage (DC) applied to RT, see Table.
Overvoltage: 1.5 times Vmax, applied to RT for 5
seconds, ratio change 0.01% max.
Ratio Stability Under Load: Change in Ratio, withVmax. applied to the Divider
Ambient +85°C: Initial 1,000 hours ratio change
0.015% max.
Ambient +50°C: Initial 1,000 hours ratio change
0.01% max.

CADDOCKUSVD2-A20M-010-02
Date Code.032 DIA.
(.81 DIA.).200 ±.020(5.08 ±.51).800 ±.020(20.32 ±.51)
1.350 ±.020(34.29 ±.51)

Sales and Applications Engineering17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
email: caddock@caddock.com
L-453.0823