Caddock Profile
Caddock, founded in 1962, is a US-based private company that specialises in manufacturing and supplying precision resistors for space and military applications. The company’s ultra-precision resistors and resistor networks are manufactured in Oregon, serving global customers. With over 250 product lines, the highly efficient film resistor modules, and customised resistors source technical solutions in harsh environments. Caddock’s resistor arrays, chips, RF, and non-inductive power resistors have enabled it to become a market leader. Moreover, high-performance resistors produced by the company are used in numerous applications, including military technology, X-ray systems, aerospace engineering, and high-end audio & video equipment.
Featured Products
Caddock MP800 Series Film Resistors 20 W Caddock MP800 series power film resistors in the TO-220 style powe...
Type USF Ultra-Stable Low TC Film Resistors The Type USF film resistors come in two variations, the 200 series and the 300 series. They were dev...
Type MS Power Film Resistors The MS series has been designed to be suitable for many possible applications by utilise Caddocks Micronox® resist...
60 W clip mounted film resistors, MP2060 series Power film resistors in TO220 enclosure. Clip-mounted heat sink assembly. Non-inductive design,...
Type MK Precision Power Film Resistors The Type MK resistors utilise Caddocks Micronox® resistance film providing a number of performance featu...
30 W film resistors, MP930 series Power film resistors in TO-220 enclosure. Non-inductive, ideal for freque...
25 W film resistors, MP925 series Power film resistors in TO-220 enclosure. Non-inductive design, enabling...
15W MP915 Series Planar thick film cermet resistors UL94V-0 flammability rating High power density Virtually non-inductive Derate linearly from...
MP850 series film resistors 50 W The Caddock MP850 Series Kool-Pak® Power Film Resistors include an integral metal...
MP850 series film resistors 50 W The Caddock MP850 Series Kool-Pak® Power Film Resistors include an integra...
Caddock 30 W MP916 and MP930 Series Power Film Resistors Caddock MP900 Series are a unique family of power...
Popular Categories For Caddock
Categories For Caddock
Popular Items
Popular items
USF340-5.00M-0.01%-5PPM, Caddock
Type USF Ultra-Stable Low TC Film Resistors
The Type USF film resistors come in two variations, the 200 series and the 300 series. They were developed to provide a viable option suitable for the requirements for increasing performance for resistors in high performance analogue electronics. They are able to provide the lowest TC with the widest resistance range and the highest voltage ratings available in the market.
Temperature Coefficient -40 to +85 °C, referenced to +25 °C
200 Series - ZERO Nominal TC - Maximum Absolute TC 2 ppm/ °C
300 Series - ZERO Nominal TC - Maximum Absolute TC 5 ppm/ °C
Resistance Range 50 ohm to 25 Megohm
Tolerance: ±0.01% or ±0.10%
Specific standard resistance values are available that are most commonly required in high accuracy analogue design. These values were selected and optimized for produce ability and performance
Ceramic package provides cool operation
Low TC Film Resistors
Popular items
Popular items
MP2060-0.005-5%, Caddock
60 W clip mounted film resistors, MP2060 series
Power film resistors in TO220 enclosure.
Clip-mounted heat sink assembly.
Non-inductive design, ideal for high frequencies.
Electrically insulated enclosure (1500 Vrms).
Power dissipated with heat sink (at unit temperature of 25°C):
60 W
Power dissipated with heat sink (at unit temperature of 25°C):
2.5 W
Tolerance:
OR005: 5%
OR010: 2%
≥OR020: 1%
Temperature coefficient:
OR005 and 0R01: 0 to +300 ppm/°C
OR020: 0 to +200 ppm/°C
R05 and 0R2 : 0 to +100 ppm/°C
≥0R5: -20 to +80 ppm/°C
Thermal resistance:
0R005: 6.94°C/W
0R010: 3.47°C/W
≥0R020: 2.08°C/W
Operating temperature:
-55 °C → +175 °C
Popular items
MK132V-10.0K-1%, Caddock
Type MK Precision Power Film Resistors
The Type MK resistors utilise Caddocks Micronox® resistance film providing a number of performance features. This includes a wide resistance range to select from going up to 100 Megohms. They are available in three miniature rectangular package configurations with standard lead spacings.
± 1% resistance tolerance as standard
Operating temperature range: -55 to +175 C
Extended life stability typically better than 0.1% per 1,000 hrs.
Non-Inductive performance provides faster setting times and minimum distortion
One size Type MK can replace many sizes of other axial-lead resistors
Micronox® Film Precision Resistors
Popular items
MS260-10K-1%, Caddock
Type MS Power Film Resistors
The MS series has been designed to be suitable for many possible applications by utilise Caddocks Micronox® resistance film providing a number of performance features. These include a wide power rating of up to 22 Watts, a voltage rating of up to 6,000 volts, and a resistance rating of up to 30 Megohms.
Popular items
MP930-3.30-1%, Caddock
30 W film resistors, MP930 series
Power film resistors in TO-220 enclosure.
Non-inductive, ideal for frequencies capable of reaching 500 MHz.
Possible to fit a heatsink.
Electrically insulated enclosure (1500 V
RMS
).
Power dissipated at 25 °C:
30 W
Tolerance:
±1% except ±5% for value of 0.02 Ω
Temperature coefficient:
0.02 Ω → 0.049 Ω: 0 → +300 ppm / °C
0.05 Ω → 0.499 Ω: 0 → +200 ppm / °C
0.5 Ω → 1 kΩ: –20 → +80 ppm / °C
Max. service voltage:
250 V
Thermal resistance:
4.17 °C / W
Enclosure:
TO-220
Popular items
MP850-5R--1%, Caddock
MP850 series film resistors 50 W
The Caddock MP850 Series Kool-Pak® Power Film Resistors include an integral metal mounting surface for highly efficient thermal transfer. The TO-220 style power package provides 50 W at +25 ºC case temperature, derated to zero at +150 ºC. Composed with Caddock's Micronox® resistance film fired onto a flat ceramic substrate, the substrate is secured to a copper heat sink which becomes the metal mounting surface. The MP850 Series Kool-Pak Power Film Resistors offer a resistance range of 0.20 Ω to 10.0K.
Features & Benefits:
High power film resistors in TO-220 enclosure.
Non inductive.
Electrically insulated enclosure.
These types of components are very useful at high frequencies up to 500 MHz.
Power dissipated at 25 °C:
50 W
Tolerance:
±1 %
Temperature coefficient:
±200 ppm / °C (0R2)
±100 ppm / °C (0R5 → 2R)
–20 → +50 ppm / °C (≥ 5R)
Max. service voltage:
300 V
Thermal resistance:
2.5 °C / W
Enclosure:
TO-220
Popular items
MP850-0.2R--1%, Caddock
MP850 series film resistors 50 W
The Caddock MP850 Series Kool-Pak® Power Film Resistors include an integral metal mounting surface for highly efficient thermal transfer. The TO-220 style power package provides 50 W at +25 ºC case temperature, derated to zero at +150 ºC. Composed with Caddock's Micronox® resistance film fired onto a flat ceramic substrate, the substrate is secured to a copper heat sink which becomes the metal mounting surface. The MP850 Series Kool-Pak Power Film Resistors offer a resistance range of 0.20 Ω to 10.0K.
Features & Benefits:
High power film resistors in TO-220 enclosure.
Non inductive.
Electrically insulated enclosure.
These types of components are very useful at high frequencies up to 500 MHz.
Power dissipated at 25 °C:
50 W
Tolerance:
±1 %
Temperature coefficient:
±200 ppm / °C (0R2)
±100 ppm / °C (0R5 → 2R)
–20 → +50 ppm / °C (≥ 5R)
Max. service voltage:
300 V
Thermal resistance:
2.5 °C / W
Enclosure:
TO-220
Popular items
MP820 75R 1%, Caddock
Caddock MP800 Series Film Resistors 20 W
Caddock MP800 series power film resistors in the TO-220 style power package with metal mounting tab. These resistors have a resistance range of 0.020 Ω to 10.0 K. The MP800 Series has a non-inductive design for high-speed switching, snubbers, and rf applications.
Features & Benefits:
Power film resistors in TO-220 enclosure.
Non inductive.
Can accommodate a heat sink.
These types of components are very useful at high frequencies up to 500 MHz.
Electrically insulated enclosure.
Power dissipated at 25 °C:
20 W
Tolerance:
±1 %
Temperature coefficient:
0R02: 0 → +300 ppm / °C
0R05 → 0R2: 0 → 200 ppm / °C
0R5 → 4R99: -20 → 80 ppm / °C
5R → 10K: -20 → 50 ppm / °C
Max. service voltage:
300 V
Thermal resistance:
7.5 °C / W
Enclosure:
TO-220
Popular items
MP915-0.10-1%, Caddock
15W MP915 Series
Planar thick film cermet resistors
UL94V-0 flammability rating
High power density
Virtually non-inductive
Derate linearly from full power at 70°C to zero at 155°C
Peak current 20x rated current up to 8ms
Popular items
MP930-25R-1%, Caddock
Caddock 30 W MP916 and MP930 Series Power Film Resistors
Caddock MP900 Series are a unique family of power resistors. These power film resistors feature a case temperature range of 15 W to 100 W at +25º C.
Features & Benefits:
Power film resistors in TO-220 case
Non-inductive, ideal for frequencies of up to 500 MHz
Possible to fit a heatsink
Electrically insulated case (1500 V r.m.s)
Exposed Ceramic Heat Dissipating Mounting Surface
Resistance Range of 0.020 Ω to 1 K
Power at 25°C
30W
Resistance Tolerance
±1% (±5% for value 0.02Ω)
Temperature Coefficient
0.02Ω → 0.049Ω: 0 → +300ppm/°C
0.05Ω → 0.49Ω: 0 → +200ppm/°C
0.5Ω → 1kΩ: -20 → +80ppm/°C
Operating Temperature
-55°C → +150°C
Thermal Resistance
4.17°C/W
Limiting Element Voltage
250V
Dielectric Withstand Voltage
1500Vrms
Insulating Resistance
10000MΩ
Height
16.26 mm
Width
10.41 mm
Lead Length (Below Standoff)
11.43 mm
Pin Spacing
5.08 mm
Popular items
MP915-1.00K-1%, Caddock
15W MP915 Series
Planar thick film cermet resistors
UL94V-0 flammability rating
High power density
Virtually non-inductive
Derate linearly from full power at 70°C to zero at 155°C
Peak current 20x rated current up to 8ms
New Items
New items
MP820-100R-1%, Caddock
Caddock MP800 Series Film Resistors 20 W
Caddock MP800 series power film resistors in the TO-220 style power package with metal mounting tab. These resistors have a resistance range of 0.020 Ω to 10.0 K. The MP800 Series has a non-inductive design for high-speed switching, snubbers, and rf applications.
Features & Benefits:
Power film resistors in TO-220 enclosure.
Non inductive.
Can accommodate a heat sink.
These types of components are very useful at high frequencies up to 500 MHz.
Electrically insulated enclosure.
Power dissipated at 25 °C:
20 W
Tolerance:
±1 %
Temperature coefficient:
0R02: 0 → +300 ppm / °C
0R05 → 0R2: 0 → 200 ppm / °C
0R5 → 4R99: -20 → 80 ppm / °C
5R → 10K: -20 → 50 ppm / °C
Max. service voltage:
300 V
Thermal resistance:
7.5 °C / W
Enclosure:
TO-220
New items
USF340-5.00M-0.01%-5PPM, Caddock
Type USF Ultra-Stable Low TC Film Resistors
The Type USF film resistors come in two variations, the 200 series and the 300 series. They were developed to provide a viable option suitable for the requirements for increasing performance for resistors in high performance analogue electronics. They are able to provide the lowest TC with the widest resistance range and the highest voltage ratings available in the market.
Temperature Coefficient -40 to +85 °C, referenced to +25 °C
200 Series - ZERO Nominal TC - Maximum Absolute TC 2 ppm/ °C
300 Series - ZERO Nominal TC - Maximum Absolute TC 5 ppm/ °C
Resistance Range 50 ohm to 25 Megohm
Tolerance: ±0.01% or ±0.10%
Specific standard resistance values are available that are most commonly required in high accuracy analogue design. These values were selected and optimized for produce ability and performance
Ceramic package provides cool operation
Low TC Film Resistors
New items
MS260-10K-1%, Caddock
Type MS Power Film Resistors
The MS series has been designed to be suitable for many possible applications by utilise Caddocks Micronox® resistance film providing a number of performance features. These include a wide power rating of up to 22 Watts, a voltage rating of up to 6,000 volts, and a resistance rating of up to 30 Megohms.
New items
New items
MP2060-0.005-5%, Caddock
60 W clip mounted film resistors, MP2060 series
Power film resistors in TO220 enclosure.
Clip-mounted heat sink assembly.
Non-inductive design, ideal for high frequencies.
Electrically insulated enclosure (1500 Vrms).
Power dissipated with heat sink (at unit temperature of 25°C):
60 W
Power dissipated with heat sink (at unit temperature of 25°C):
2.5 W
Tolerance:
OR005: 5%
OR010: 2%
≥OR020: 1%
Temperature coefficient:
OR005 and 0R01: 0 to +300 ppm/°C
OR020: 0 to +200 ppm/°C
R05 and 0R2 : 0 to +100 ppm/°C
≥0R5: -20 to +80 ppm/°C
Thermal resistance:
0R005: 6.94°C/W
0R010: 3.47°C/W
≥0R020: 2.08°C/W
Operating temperature:
-55 °C → +175 °C
New items
MK132V-10.0K-1%, Caddock
Type MK Precision Power Film Resistors
The Type MK resistors utilise Caddocks Micronox® resistance film providing a number of performance features. This includes a wide resistance range to select from going up to 100 Megohms. They are available in three miniature rectangular package configurations with standard lead spacings.
± 1% resistance tolerance as standard
Operating temperature range: -55 to +175 C
Extended life stability typically better than 0.1% per 1,000 hrs.
Non-Inductive performance provides faster setting times and minimum distortion
One size Type MK can replace many sizes of other axial-lead resistors
Micronox® Film Precision Resistors
New items
MP930-3.30-1%, Caddock
30 W film resistors, MP930 series
Power film resistors in TO-220 enclosure.
Non-inductive, ideal for frequencies capable of reaching 500 MHz.
Possible to fit a heatsink.
Electrically insulated enclosure (1500 V
RMS
).
Power dissipated at 25 °C:
30 W
Tolerance:
±1% except ±5% for value of 0.02 Ω
Temperature coefficient:
0.02 Ω → 0.049 Ω: 0 → +300 ppm / °C
0.05 Ω → 0.499 Ω: 0 → +200 ppm / °C
0.5 Ω → 1 kΩ: –20 → +80 ppm / °C
Max. service voltage:
250 V
Thermal resistance:
4.17 °C / W
Enclosure:
TO-220
New items
MP925-5.00K1%, Caddock
25 W film resistors, MP925 series
Power film resistors in TO-220 enclosure.
Non-inductive design, enabling high-frequency use.
Electrically insulated enclosure (1500 Vrms).
Power dissipated at 25 °C:
25 W
Tolerance:
1%
Temperature coefficient:
–20 to +80 ppm/°C
Maximum working voltage:
500 V
Operating temperature:
–55°C to +150°C
Thermal resistance:
5°C / W
Enclosure:
TO-220
New items
MP915-0.20-1%, Caddock
15W MP915 Series
Planar thick film cermet resistors
UL94V-0 flammability rating
High power density
Virtually non-inductive
Derate linearly from full power at 70°C to zero at 155°C
Peak current 20x rated current up to 8ms
New items
MP850-0.2R--1%, Caddock
MP850 series film resistors 50 W
The Caddock MP850 Series Kool-Pak® Power Film Resistors include an integral metal mounting surface for highly efficient thermal transfer. The TO-220 style power package provides 50 W at +25 ºC case temperature, derated to zero at +150 ºC. Composed with Caddock's Micronox® resistance film fired onto a flat ceramic substrate, the substrate is secured to a copper heat sink which becomes the metal mounting surface. The MP850 Series Kool-Pak Power Film Resistors offer a resistance range of 0.20 Ω to 10.0K.
Features & Benefits:
High power film resistors in TO-220 enclosure.
Non inductive.
Electrically insulated enclosure.
These types of components are very useful at high frequencies up to 500 MHz.
Power dissipated at 25 °C:
50 W
Tolerance:
±1 %
Temperature coefficient:
±200 ppm / °C (0R2)
±100 ppm / °C (0R5 → 2R)
–20 → +50 ppm / °C (≥ 5R)
Max. service voltage:
300 V
Thermal resistance:
2.5 °C / W
Enclosure:
TO-220
New items
MP850-5R--1%, Caddock
MP850 series film resistors 50 W
The Caddock MP850 Series Kool-Pak® Power Film Resistors include an integral metal mounting surface for highly efficient thermal transfer. The TO-220 style power package provides 50 W at +25 ºC case temperature, derated to zero at +150 ºC. Composed with Caddock's Micronox® resistance film fired onto a flat ceramic substrate, the substrate is secured to a copper heat sink which becomes the metal mounting surface. The MP850 Series Kool-Pak Power Film Resistors offer a resistance range of 0.20 Ω to 10.0K.
Features & Benefits:
High power film resistors in TO-220 enclosure.
Non inductive.
Electrically insulated enclosure.
These types of components are very useful at high frequencies up to 500 MHz.
Power dissipated at 25 °C:
50 W
Tolerance:
±1 %
Temperature coefficient:
±200 ppm / °C (0R2)
±100 ppm / °C (0R5 → 2R)
–20 → +50 ppm / °C (≥ 5R)
Max. service voltage:
300 V
Thermal resistance:
2.5 °C / W
Enclosure:
TO-220
New items
MP930-25R-1%, Caddock
Caddock 30 W MP916 and MP930 Series Power Film Resistors
Caddock MP900 Series are a unique family of power resistors. These power film resistors feature a case temperature range of 15 W to 100 W at +25º C.
Features & Benefits:
Power film resistors in TO-220 case
Non-inductive, ideal for frequencies of up to 500 MHz
Possible to fit a heatsink
Electrically insulated case (1500 V r.m.s)
Exposed Ceramic Heat Dissipating Mounting Surface
Resistance Range of 0.020 Ω to 1 K
Power at 25°C
30W
Resistance Tolerance
±1% (±5% for value 0.02Ω)
Temperature Coefficient
0.02Ω → 0.049Ω: 0 → +300ppm/°C
0.05Ω → 0.49Ω: 0 → +200ppm/°C
0.5Ω → 1kΩ: -20 → +80ppm/°C
Operating Temperature
-55°C → +150°C
Thermal Resistance
4.17°C/W
Limiting Element Voltage
250V
Dielectric Withstand Voltage
1500Vrms
Insulating Resistance
10000MΩ
Height
16.26 mm
Width
10.41 mm
Lead Length (Below Standoff)
11.43 mm
Pin Spacing
5.08 mm
Don’t hesitate to ask questions for better clarification.