Product Overview
Caddock Electronics, Inc. offers the Type USVD and Type HVD Ultra-Precision Voltage Dividers, engineered for the highest precision in voltage division applications. The USVD series provides exceptional performance for voltages ranging from 450 Volts DC to 2000 Volts DC, while the HVD series is designed for higher voltage ranges of 1500 Volts DC to 5000 Volts DC. These dividers are constructed by bonding selected high-performance resistors (USVD) or utilize a monolithic ceramic sandwich construction (HVD). They are ideal for demanding applications requiring precise voltage division, such as in medical equipment, laboratory equipment, and analytical instruments. Custom voltage division ratios and specifications are available for high-quantity applications.
Product Attributes
- Brand: Caddock Electronics, Inc.
- Product Types: USVD Ultra-Precision Voltage Dividers, HVD Ultra-Precision Voltage Dividers
- Construction (HVD): Monolithic ceramic sandwich construction
- Construction (USVD): Formed by bonding two selected Type USF Ultra-Precision Resistors
Technical Specifications
General Specifications:
| Specification | Value |
|---|---|
| Absolute Tolerance | 0.10% for all resistors, measured at +23C 2C |
| Absolute TC (USVD2) | 10 ppm/C, referenced to +25C, R taken at -40C and +85C |
| Absolute TC (HVD5) | 30 ppm/C, referenced to +25C, R taken at -40C and +85C |
| Load Life Stability | Ratio change 0.02% max. (1000 hours at +85C with maximum continuous operating voltage) |
| Overvoltage | Ratio change 0.02% max. (1.5 times rated voltage for 5 seconds) |
| Thermal Shock | Ratio change 0.02% max. (Mil-Std-202, Method 107, Cond. A, with minimum temperature of -40C) |
| Operating Temperature | -40C to +85C |
Model Specific Data:
| Part Number | Resistance (R1 + R2) | R1 | R2 | Vmax (Volts DC) | Voltage Division (RT : R2) | Ratio Tolerance (RT : R2) | Ratio T.C. (RT : R2) | Ratio V.C. (RT : R2) |
|---|---|---|---|---|---|---|---|---|
| USVD2 - B1M - 010 - 02 | 990 K | 10 K | 1 Meg | 450 | 100 : 1 | 0.01% | 2 ppm/C | 0.05 ppm/V |
| USVD2 - B1M - 025 - 02 | 990 K | 20 K | 1 Meg | 450 | 100 : 1 | 0.025% | 2 ppm/C | 0.05 ppm/V |
| USVD2 - B2M - 010 - 02 | 1.98 Meg | 10 K | 2 Meg | 650 | 100 : 1 | 0.01% | 2 ppm/C | 0.02 ppm/V |
| USVD2 - B2M - 025 - 02 | 1.98 Meg | 20 K | 2 Meg | 650 | 100 : 1 | 0.025% | 2 ppm/C | 0.02 ppm/V |
| USVD2 - A10M - 010 - 02 | 9.99 Meg | 10 K | 10 Meg | 1400 | 1,000 : 1 | 0.01% | 2 ppm/C | 0.02 ppm/V |
| USVD2 - A10M - 025 - 02 | 9.99 Meg | 10 K | 10 Meg | 1400 | 1,000 : 1 | 0.025% | 2 ppm/C | 0.02 ppm/V |
| USVD2 - B10M - 010 - 02 | 9.9 Meg | 100 K | 10 Meg | 1400 | 100 : 1 | 0.01% | 2 ppm/C | 0.02 ppm/V |
| USVD2 - B10M - 025 - 02 | 9.9 Meg | 100 K | 10 Meg | 1400 | 100 : 1 | 0.025% | 2 ppm/C | 0.02 ppm/V |
| USVD2 - A20M - 010 - 02 | 19.98 Meg | 20 K | 20 Meg | 2000 | 1,000 : 1 | 0.01% | 2 ppm/C | 0.02 ppm/V |
| USVD2 - A20M - 025 - 02 | 19.98 Meg | 20 K | 20 Meg | 2000 | 1,000 : 1 | 0.025% | 2 ppm/C | 0.02 ppm/V |
| USVD2 - B20M - 010 - 02 | 19.8 Meg | 200 K | 20 Meg | 2000 | 100 : 1 | 0.01% | 2 ppm/C | 0.02 ppm/V |
| USVD2 - B20M - 025 - 02 | 19.8 Meg | 200 K | 20 Meg | 2000 | 100 : 1 | 0.025% | 2 ppm/C | 0.02 ppm/V |
| HVD5 - A10M - 050 - 05 | 9.99 Meg | 10 K | 10 Meg | 1500 | 1,000 : 1 | 0.05% | 5 ppm/C | 0.02 ppm/V |
| HVD5 - B10M - 050 - 05 | 9.9 Meg | 100 K | 10 Meg | 1500 | 100 : 1 | 0.05% | 5 ppm/C | 0.02 ppm/V |
| HVD5 - A20M - 050 - 05 | 19.98 Meg | 20 K | 20 Meg | 2500 | 1,000 : 1 | 0.05% | 5 ppm/C | 0.02 ppm/V |
| HVD5 - B20M - 050 - 05 | 19.8 Meg | 200 K | 20 Meg | 2500 | 100 : 1 | 0.05% | 5 ppm/C | 0.02 ppm/V |
| HVD5 - A50M - 050 - 05 | 49.95 Meg | 50 K | 50 Meg | 5000 | 1,000 : 1 | 0.05% | 5 ppm/C | 0.04 ppm/V |
| HVD5 - B50M - 050 - 05 | 49.5 Meg | 500 K | 50 Meg | 5000 | 100 : 1 | 0.05% | 5 ppm/C | 0.04 ppm/V |
Dimensions (Refer to Figure 1 & 2):
| Dimension | Value (inches) | Value (mm) |
|---|---|---|
| Length | 1.500 .020 | 38.1 .51 |
| Width | .500 .020 | 12.7 .51 |
| Height (Max) | 0.110 Max. | 2.79 Max. |
| Lead Diameter | .032 DIA. | .81 DIA. |
| Lead Spacing | 0.100 | 2.54 |
Circuit Board Mounting Note: Recommended circuit board hole is nominally 0.039 inch (.99 mm) to achieve a vertical mount.
2507011338_Caddock-HVD5-A50M-050-05_C7287457.pdf
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