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Specifications
Resistance:
120mΩ
Power(Watts):
5W
Type:
Current Sense Resistor
Tolerance:
±1%
Mfr. Part #:
73M5R120F
Package:
4527
Key Attributes
Model Number:
73M5R120F
Product Description
Product Overview
The 73M1A, 73M2A, 73M3x, and 73M5 Series Current Sensing Resistors are metal plate packaged devices designed for excellent accuracy in current detection and limiting applications. Featuring a robust metal plate construction with a copper alloy base, these resistors offer good electrical and thermal characteristics due to their special metallic resistor material. They are suitable for a wide range of industrial applications, including motor control, power supplies, and inverter/converter systems.
Product Attributes
- Brand: CTS Corporation
- Material: Metal Plate Construction Copper Alloy
- Terminal Finish: Matte Tin [e3]
- Packaging: Tape and Reel
- Reflow Capable: per JEDEC J-STD-020, +260C Maximum
Technical Specifications
| Model Type | Power Rating [Watts] @ +70C | Resistance Range [m] | Operating Temperature Range | Terminal Finish | Tolerance [%] | Temperature Coefficient (Typical) |
| 73M1A | 1 | 0.25 - 50 | -55C to +155C | Matte Tin [e3] | 1 | R 0.010: 50ppm/C R < 0.010: 100ppm/C |
| 73M2A | 2 | 0.25 - 75 | -55C to +155C | Matte Tin [e3] | 1 | R < 0.010: 100ppm/C R 0.010: 50ppm/C |
| 73M3A | 3 | 0.25 - 3 | -55C to +155C | Matte Tin [e3] | 1 | R 0.001: 200ppm/C R > 0.001: 100ppm/C |
| 73M3B | 3 | 4 - 100 | -55C to +155C | Matte Tin [e3] | 1 | 50ppm/C |
| 73M5 | 5 | 1 - 120 | -55C to +155C | Matte Tin [e3] | 1 | R < 0.010: 100ppm/C R 0.010: 50ppm/C |
Environmental & Performance Specifications
| Test | Description | Maximum Delta R [%] |
| Temperature Coefficient | N/A | See table above |
| Short-Time Overload | Applied electric power equal to 3 times rated power in 5s [JIS C 5201-1 4.13] | 0.5 [73M1A, 73M2A, 73M3x] 2.0 [73M5] |
| Insulation Resistance | Over 109 ohm | N/A |
| Dielectric Withstanding Voltage | No Breakdown | N/A |
| Resistance to Solder Heat | No Damage | 0.5 |
| Solderability | Over 95% Coverage | N/A |
| Vibration | No Damage | 0.5 |
| Resistance to Solvent | No Damage | N/A |
| High Temperature Exposure | 1,000 hours @ +155C 2C, bias load 0% power [JIS C 5201-1 4.23.2] | 2.0 |
| Change of Temperature | No Damage | 0.5 |
| Moisture Resistance | MIL-STD-202, Method 106, 0% power 7a and 7b not required, 1 cycle = 24 hours, 10 cycles | 1.0 |
| Bias Humidity | 1,000 hours @ +85C 2C, 85% relative humidity, bias load 10%, on time 90 minutes/off time 30 minutes | 1.0 |
| Endurance [Rated Load] | 1,000 hours @ +70C 3C, bias load, on time 90 minutes/off time 30 minutes | 2.0 |
Mechanical Specifications & Dimensions
| Model Type | Dimensions [mm] (L x W x t) | Resistance [m] |
| 73M1A | 3.2 0.3 x 1.6 0.3 x 0.6 0.3 | 0.25 - 50 |
| 73M2A | 6.3 0.3 x 3.2 0.3 x 1.0 | 0.25 - 75 |
| 73M3A | 6.5 0.3 x 6.8 0.3 x 1.2 Max. | 0.25 - 3 |
| 73M3B | 7.2 0.3 x 6.7 0.3 x 1.3 Max. | 4 - 100 |
| 73M5 | 11.4 0.3 x 6.9 0.3 x 1.8 Max. | 1 - 120 |
Applications
- Current Detection
- Current Limiting
- Regulated Battery Circuits
- Motor Control
- Power Supply
- Hard Disk Drives
- Inverter/Converter
- Industrial Equipment
- Infotainment Systems
2412111354_CTS-73M5R120F_C4324764.pdf
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