Caddock Electronics

The exceptional performance of this extensive family of 1776 Precision Decade Resistor Voltage Dividers has been achieved through the special combination of advantages provided by Caddock's Tetrinox resistance films. This advanced film resistor technology provides the performance characteristics required by the precision input signal ciruits of both bench-type and laboratory digital instruments. There are now 39 standard models in the expanded family of Type 1776 precision resistor networks that include: 3, 4, and 5 - decade voltage dividers with ratios from 10:1 to 10,000:1. 1,200 volts continuous ratings and overvoltage to 2,000 volts. Many combinations of Ratio and Absolute Tolerance, and Ratio and Absolute Temperature Coefficient.

Twelve standard models in five network arrangements of Caddock's 1787 Current Sense Resistor Networks provide the specific accuracy and resistance values required for a wide range of current measuring instruments and circuits. Type 1787 Current Sense Resistor Networks utilize Caddock's Micronox® resistance films and advanced high thru-put laser manufacturing capabilities to achieve many vital advantages in precision current measurement circuits, including laboratory and bench-type digital instrumentation: The thin-profile single-package configuration replaces as many as four discrete current sense resistors. The monolithic construction and standardized lead spacing simplify installation. Caddock Micronox® resistance films provide exceptional stability for improved long-term measurement accuracy.

The CC Low Resistance Precision Chip Resistor is the best choice for switching power supplies, motor speed controls, and high current sensing applications. The chip resistors with sizes of 2015 and 2520 for Wire Bond Style and 1512, 2015 and 2520 for Flip Chip Style, provides a resistance ranges of 0,010 Ω to 10 Ω. Key Features: Style FC - Flip Chip version for surface mount applications. Style WB - Wire Bond version for hybrid applications with metallized back surface for solder down heat sinking of the chip, includes bondable termination pads to receive aluminum wire bonds. Thermal resistance is provided to optimize high power designs when utilizing higher thermal conductivity circuit board substrates such as IMS or Alumina. Resistance range down to 0.010 ohm at ±5%, 0.050 ohm at ±2%,and 0.10 Ω at ±1%. Low inductance provides excellent high frequency and pulse response. High pulse handling and overload capability. Best choice for switching power supplies, motor speed controls, and high current sensing applications.

Type CD Low Resistance Precision Chip Resistors utilize the proven Caddock Micronox® resistance films to achieve the unique low resistance range in this family. The special performance features of the Type CD Low Resistance Precision Film Resistor include: Style FC - Flip Chip version for surface mount applications. Style WB - Wire Bond version for hybrid applications with metallized back surface for solder down heat sinking of the chip, includes bondable termination pedestals to receive aluminum wire bonds. Resistance as low as 0.010 Ω at ±1%. Pedestal terminals in this design provide an ultra low resistance connection pad which maintains the precision 0.010 Ω ±1% at the point of customer Kelvin connection to the resistor chip. The pedestal terminal with its copper core also provides heat spreading which enhances the high power handling capability. Thermal resistance is provided to optimize high power designs when utilizing higher thermal conductivity circuit board substrates such as IMS or Alumina. High pulse handling and overload capability. Low inductance provides excellent high frequency and pulse response.

The CHR High Resistance Precision Chip Resistors are designed for use in extremely low signal detection/amplification circuits. Applications include: Photodiode signal amplification, photomultipliers, ionization detection, etc. These precision high resistance chip resistors can also be ideal for use as the input resistor for high impedance voltage division. KEY FEATURES: Style FC - Flip Chip version mount applications with solderable metallized termination pads on one side of the substrate, back side is bare ceramic Style WB - Wire Bond for hybrid applications

The HVD Ultra-Precision Voltage Dividers are monolithic voltage dividers built with ceramic sendwich construction. These voltage dividers have ultra-precision performance in the range of 1500 Volts DC to 5000 Volts DC. These dividers are ideal for high performance voltage divisions applications in medical equipment, laboratory equipment, analytical instruments, etc.

The MG Precision High Voltage Resistors has been proven through many years of use in equipment that demands the highest reliability and stability, including TWT amplifiers, X-Ray systems, geophysical instruments and medical electronic. Most models are manufactured with Caddock's non-inductive design. KEY FEATURES Single-resistor values as high as 10 000 Megaohms Maximum continous operating voltages as high as 48 000 Volts Resistance Tolerances from 1% to 0.1% Temperature Coefficient, for standard resistance range, of 80 ppm/°C om combination with resistance tolerances as tight as 0,1%

The MP2060 Clip Mount Power Film Resistor provides a power rating up to 60 Watts at +25°C case temperature for resistance values of 0,020 ohm and above. In the range of 0,015 ohm and below the TO-220 style resistor is current rated up to 60 Amps at +25°C case temperature. Key Features: Non-inductive Design TO-220 Style Package Equivalent to UL94 V-0 flammability rating Operation up to +150°C case temperature Excellent pulse/surge performance

MP725 Surface Mount Power Film Resistors introduce our proven Micronox® resistance film system in the widely accepted D-Pak style surface mount power package. The non-inductive design makes this resistor ideal in high frequency communications, power switching circuits, and snubbers. The special performance features of our patented MP725 Surface Mount Power Film Resistors include: D-Pak style power package for surface mount applications. Metal tab assists in post surface mount soldering inspection. Resistance values to 0.020 ohm for current sense applications. Non-Inductive Design. Up to 25 Watt power rating at +25°C case temperature. Resistor element is electrically isolated from the metal heat sink tab.

0.020 Ω to 10.0 kΩ; ±1%; 20 W; TO-220 Style; Power Film Caddock Electronics’ MP820/MP821 series of power film resistors in a TO-220 style power package feature a metal heat sink mounting tab. Within the MP820/MP821 series, 61 different power film resistors are available with standard resistance values ranging from 0.020 Ω to 10.0 kΩ.   The MP820/MP821 series power film resistors are constructed with Caddock Electronics’ Micronox® resistance film fired onto a flat ceramic substrate which is thermally bonded to the copper heat sink tab. The resistor body is then molded with a high temperature molding compound to finish the metal tab TO-220 package. The lead wire attachment and resistance element geometry are configured to provide outstanding non-inductive performance.   Use your thermal design experience with power semiconductors in TO-220 style power packages to help you get the most out of this unique family of power resistors. The thermal design issues are the same where power handling capability is based on the case temperature which is maintained in your design.  At +25 °C case temperature, the MP820/MP821 series allow up to 20 W, derated to zero at +175 °C. Standard tolerance is ±1%, other tolerances (±0.5%, ±2%, ±5%, ±10% and ±20%) are available for most resistance values on request.  Key Features: TO-220 Style Power Package 20 W at +25 °C Case Temperature, Derated to Zero at +175 °C Metal Heat Sink Mounting Tab Resistor Element Is Electrically Isolated From the Mounting Surface Non-Inductive Design for High-speed Switching, Snubbers and RF Applications Temperature Coefficient Starting at -20 to +50 ppm/°C (5.00 Ω and Above) and up to 0 to +300 ppm/°C (0.049 Ω and Below) Operating Temperature -55 to +175 °C Very Low Inductance: 10 nH typical

0.020 Ω to 10.0 kΩ; ±1%; 25 W; TO-220 Style; Power Film Caddock Electronics’ MP825 series of power film resistors in a TO-126 style power package feature an integral metal mounting surface for highly efficient thermal transfer. Within the MP825 series, 61 different power film resistors are available with standard resistance values ranging from 0.020 Ω to 10.0 kΩ.   The MP825 series power film resistors are constructed with Caddock Electronics’ Micronox® resistance film fired onto a flat ceramic substrate. The ceramic substrate is bonded to a copper heat sink which becomes the metal mounting surface. This assembly is molded with the copper heat sink flush with the back surface of the part. The terminal attachment and resistance element geometry are configured to provide outstanding non-inductive performance.  Use your thermal design experience with power semiconductors in TO-126 style power packages to help you get the most out of this unique family of power resistors. The thermal design issues are the same where power handling capability is based on the case temperature which is maintained in your design.  At +25 °C case temperature, the MP825 series allow up to 25 W, derated to zero at +150 °C. Standard tolerance is ±1% for all resistance values 0.050 Ω and above. Below 0.050 Ω the tolerance is ±5%. Other tolerances (±0.5%, ±2%, ±5%, ±10% and ±20%) are available for most resistance values on request.  Key Features: TO-126 Style Power Package 25 W at +25 °C Case Temperature, Derated to Zero at +150 °C Copper Heat Sink Integral in the Molded Package Resistor Element Is Electrically Isolated From the Mounting Surface Non-Inductive Design   Temperature Coefficient Starting at -20 to +50 ppm/°C (5.00 Ω and Above) and up to 0 to +300 ppm/°C (0.049 Ω and Below) Operating Temperature -55 to +150 °C Very Low Inductance: 10 nH typical

0.020 Ω to 10.0 kΩ; ±1%; 50 W; TO-220 Style; Power Film Caddock Electronics’ MP850 series of power film resistors in a TO-220 style power package feature an integral metal mounting surface for highly efficient thermal transfer. Within the MP850 series, 52 different power film resistors are available with standard resistance values ranging from 0.20 Ω to 10.0 kΩ.  The MP850 series power film resistors are constructed with Caddock Electronics’ Micronox® resistance film fired onto a flat ceramic substrate. The ceramic substrate is bonded to a copper heat sink which becomes the metal mounting surface. This assembly is molded with the copper heat sink flush with the back surface of the part. The terminal attachment and resistance element geometry are configured to provide outstanding non-inductive performance.  Use your thermal design experience with power semiconductors in TO-220 style power packages to help you get the most out of this unique family of power resistors. The thermal design issues are the same where power handling capability is based on the case temperature which is maintained in your design.  At +25 °C case temperature, the MP850 series allow up to 50 W, derated to zero at +150 °C. Standard tolerance is ±1% for all resistance values 0.050 Ω and above. Below 0.050 Ω the tolerance is ±5%. Other tolerances (±0.5%, ±2%, ±5%, ±10% and ±20%) are available for most resistance values on request.  Key Features: TO-220 Style Power Package 50 W at +25 °C Case Temperature, Derated to Zero at +150 °C Copper Heat Sink Integral in the Molded Package Resistor Element Is Electrically Isolated From the Mounting Surface Non-Inductive Design   Temperature Coefficient Starting at -20 to +50 ppm/°C (5.00 Ω and Above) and up to 0 to +300 ppm/°C (0.049 Ω and Below) Operating Temperature -55 to +150 °C Very Low Inductance: 10 nH typical 

0.050 to 100 Ω; ±1%; 100 W; TO-247 Style; Power Film Caddock Electronics’ MP9100 series of power film resistors in a TO-247 style power package feature a heat sink mountable design with an exposed ceramic heat dissipating mounting surface. Within the MP9100 series, 35 different power film resistors are available with standard resistance values ranging from 0.050 to 100 Ω.   The MP9100 series power film resistors are constructed with Caddock Electronics’ Micronox® resistance film fired onto a flat ceramic substrate. The terminal attachment and resistance element geometry are configured to provide outstanding non-inductive performance.  The ceramic substrate is positioned in the molded package such that the resistor element and terminal attachment areas on the substrate are encapsulated in the molded body with the other side of the ceramic being exposed flush with the back mounting surface of the device.  Use your thermal design experience with power semiconductors in TO-247 style power packages to help you get the most out of this unique family of power resistors. The thermal design issues are the same where power handling capability is based on the case temperature which is maintained in your design.  At +25 °C case temperature, the MP9100 series allow up to 100 W, derated to zero at +175 °C. Standard tolerance is ±1%, custom resistance and tolerance values are available on request.  Key Features: TO-247 Style Power Package 30 W at +25 °C Case Temperature, Derated to Zero at +175 °C Exposed Ceramic Heat Dissipating Mounting Surface Non-Inductive Design Temperature Coefficient -20 to +80 ppm/°C (0.50 Ω and Above), 0 to +150 ppm/°C (Below 0.050 Ω) Operating Temperature -55 to +175 °C Very Low Inductance: 20 nH typical

0.020 Ω to 1.00 kΩ; ±1%, ±5%; 15 W; TO-126 Style; Power Film Caddock Electronics’ MP915 series of power film resistors in a TO-126 style power package feature a heat sink mountable design with an exposed ceramic heat dissipating mounting surface. Within the MP915 series, 52 different power film resistors are available with standard resistance values ranging from 0.020 Ω to 1.00 kΩ.   The MP915 series power film resistors are constructed with Caddock Electronics' Micronox® resistance film fired onto a flat ceramic substrate. The terminal attachment and resistance element geometry are configured to provide outstanding non-inductive performance.  The ceramic substrate is positioned in the molded package such that the resistor element and terminal attachment areas on the substrate are encapsulated in the molded body with the other side of the ceramic being exposed flush with the back mounting surface of the device.  Use your thermal design experience with power semiconductors in TO-126 style power packages to help you get the most out of this unique family of power resistors. The thermal design issues are the same where power handling capability is based on the case temperature which is maintained in your design.  At +25 °C case temperature, the MP915 series allow up to 15 W, derated to zero at +150 °C. Standard tolerance is ±1% for all resistance values 0.050 Ω and above. Below 0.050 Ω the tolerance is ±5%. Lower tolerances (5% and 20%) are available for most resistance values on request.  Key Features: TO-126 Style Power Package 15 W at +25 °C Case Temperature, Derated to Zero at +150 °C Exposed Ceramic Heat Dissipating Mounting Surface Non-Inductive Design Temperature Coefficient Starting at -20 to +80 ppm/°C (0.50 Ω and Above) and up to 0 to +300 ppm/°C (0.049 Ω and Below) Operating Temperature -55 to +150 °C Very Low Inductance: 10 nH typical

0.010, 0.015 Ω; ±5%; 16 W; TO-220 Style; Power Film Caddock Electronics’ MP916 series of power film resistors in a TO-220 style power package feature a heat sink mountable design with an exposed ceramic heat dissipating mounting surface. Within the MP916 series, two different power film resistors are available with standard resistance values of 0.010 Ω and 0.015 Ω.   The MP916 series power film resistors are constructed with Caddock Electronics’ Micronox® resistance film fired onto a flat ceramic substrate. The terminal attachment and resistance element geometry are configured to provide outstanding non-inductive performance.  The ceramic substrate is positioned in the molded package such that the resistor element and terminal attachment areas on the substrate are encapsulated in the molded body with the other side of the ceramic being exposed flush with the back mounting surface of the device.  Use your thermal design experience with power semiconductors in TO-220 style power packages to help you get the most out of this unique family of power resistors. The thermal design issues are the same where power handling capability is based on the case temperature which is maintained in your design.  At +25 °C case temperature, the MP916 series allow up to 16 W, derated to zero at +150 °C. Standard tolerance is ±5%, lower tolerance (20%) available on request.  Key Features: TO-220 Style Power Package 16 W at +25 °C Case Temperature, Derated to Zero at +150 °C Exposed Ceramic Heat Dissipating Mounting Surface Non-Inductive Design Temperature Coefficient 0 to +500 ppm/°C Operating Temperature -55 to +150 °C Very Low Inductance: 10 nH typical

5.00 to 100 kΩ; ±1%; 25 W; TO-220 Style; Power Film Caddock Electronics’ MP925 series of power film resistors in a TO-220 style power package feature a heat sink mountable design with an exposed ceramic heat dissipating mounting surface. Within the MP925 series, 16 different power film resistors are available with standard resistance values ranging from 5.00 kΩ to 100 kΩ.   The MP925 series power film resistors are constructed with Caddock Electronics’ Micronox® resistance film fired onto a flat ceramic substrate. The terminal attachment and resistance element geometry are configured to provide outstanding non-inductive performance.  The ceramic substrate is positioned in the molded package such that the resistor element and terminal attachment areas on the substrate are encapsulated in the molded body with the other side of the ceramic being exposed flush with the back mounting surface of the device.  Use your thermal design experience with power semiconductors in TO-220 style power packages to help you get the most out of this unique family of power resistors. The thermal design issues are the same where power handling capability is based on the case temperature which is maintained in your design.  At +25 °C case temperature, the MP925 series allow up to 25 W, derated to zero at +150 °C. Standard tolerance is ±1%, lower tolerances (5% and 20%) are available for most resistance values on request.  Key Features: TO-220 Style Power Package 25 W at +25 °C Case Temperature, Derated to Zero at +150 °C Exposed Ceramic Heat Dissipating Mounting Surface Non-Inductive Design Temperature Coefficient -20 to +80 ppm/°C Operating Temperature -55 to +150 °C Very Low Inductance: 10 nH typical

0.020 Ω to 4.00 kΩ; ±1%, ±5%; 30 W; TO-220 Style; Power Film Caddock Electronics’ MP930 series of power film resistors in a TO-220 style power package feature a heat sink mountable design with an exposed ceramic heat dissipating mounting surface. Within the MP930 series, 58 different power film resistors are available with standard resistance values ranging from 0.020 Ω to 4.00 kΩ.   The MP930 series power film resistors are constructed with Caddock Electronics’ Micronox® resistance film fired onto a flat ceramic substrate. The terminal attachment and resistance element geometry are configured to provide outstanding non-inductive performance.  The ceramic substrate is positioned in the molded package such that the resistor element and terminal attachment areas on the substrate are encapsulated in the molded body with the other side of the ceramic being exposed flush with the back mounting surface of the device.  Use your thermal design experience with power semiconductors in TO-220 style power packages to help you get the most out of this unique family of power resistors. The thermal design issues are the same where power handling capability is based on the case temperature which is maintained in your design.  At +25 °C case temperature, the MP930 series allow up to 30 W, derated to zero at +150 °C. Standard tolerance is ±1% for all resistance values 0.050 Ω and above. Below 0.050 Ω the tolerance is ±5%. Lower tolerances (±5% and ±20%) are available for most resistance values on request.  Key Features: TO-220 Style Power Package 30 W at +25 °C Case Temperature, Derated to Zero at +150 °C Exposed Ceramic Heat Dissipating Mounting Surface Non-Inductive Design Temperature Coefficient Starting at -20 to +80 ppm/°C (0.50 Ω and Above) and up to 0 to +300 ppm/°C (0.049 Ω and Below) Operating Temperature -55 to +150 °C Very Low Inductance: 10 nH typical 

TO-220; 0.020 Ω; 5%; 30 W

TO-220; 0.10 Ω; 1%; 30 W

TO-22; 0.20 Ω; 1%; 30 W

TO-220; 0.50 Ω; 1%; 30 W

TO-220; 1.00 kΩ; 1%; 30 W

TO-220; 10.0 Ω; 1%; 30 W

TO-220; 100 Ω; 1%; 30 W