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Specifications
Power(Watts):
1W
Resistance:
2.5mΩ
Type:
Current Sense Resistor
Tolerance:
±1%
Mfr. Part #:
73M1AR0025F
Package:
1206
Key Attributes
Model Number:
73M1AR0025F
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. These resistors utilize a special metallic resistor material, providing good electrical and thermal characteristics for reliable performance in various industrial and electronic systems.
Product Attributes
- Brand: CTS Corporation
- Construction: Metal Plate
- Terminal Finish: Matte Tin [e3]
- Reflow Capable: per JEDEC J-STD-020, +260C Maximum
- Packaging: Tape and Reel
- Certifications: JEDEC J-STD-020, JIS C 5201-1, MIL-STD-202
Technical Specifications
| Model Type | Power Rating [Watts] | Resistance Range [m] | Resistance Tolerance [%] | Operating Temperature Range | Rated Ambient Temperature | Temperature Coefficient |
| 73M1A | 1.0 | 0.25 - 50 | 1 | -55C to +155C | +70C | R < 0.010: 100ppm/C; R 0.010: 50ppm/C |
| 73M2A | 2.0 | 0.25 - 75 | 1 | -55C to +155C | +70C | R < 0.010: 100ppm/C; R 0.010: 50ppm/C |
| 73M3A | 3.0 | 0.25 - 3 | 1 | -55C to +155C | +70C | R 0.001: 200ppm/C; R > 0.001: 100ppm/C |
| 73M3B | 3.0 | 4 - 100 | 1 | -55C to +155C | +70C | 50ppm/C |
| 73M5 | 5.0 | 1 - 120 | 1 | -55C to +155C | +70C | R < 0.010: 100ppm/C; R 0.010: 50ppm/C |
| Test | Maximum Delta R [%] | Notes |
| Short-Time Overload | 0.5 (73M1A, 73M2A, 73M3x) 2.0 (73M5) | Applied electric power equal to 3 times rated power in 5s [JIS C 5201-1 4.13] |
| Resistance to Solder Heat | 0.5 | Place on copper sheet [t = 0.2mm] heated by solder, +260C 5C, 5 0.5 seconds |
| Solderability | Over 95% Coverage | Immerse terminal in solder [Sn3Ag0.5Cu], +245C 0.5C, 3 0.5 seconds [JIS C 5201-1 4.17] |
| Vibration | 0.5 | Frequency 10Hz to 55Hz, Pk-Pk amplitude 15mm, sweeping rate 1 minute, 3 directions each 2 hours [JIS C 5201-1 4.22] |
| High Temperature Exposure | 2.0 | 1,000 hours @ +155C 2C, bias load 0% power [JIS C 5201-1 4.23.2] |
| Change of Temperature | 0.5 | 30 minutes @ -55C, 3 minutes @ +25C, 30 minutes @ +155C, 3 minutes @ +25C; 5 cycles |
| Moisture Resistance | 1.0 | MIL-STD-202, Method 106, 0% power 7a and 7b not required, 1 cycle = 24 hours, 10 cycles |
| Bias Humidity | 1.0 | 1,000 hours @ +85C 2C, 85% relative humidity, bias load 10%, on time 90 minutes/off time 30 minutes |
| Endurance [Rated Load] | 2.0 | 1,000 hours @ +70C 3C, bias load, on time 90 minutes/off time 30 minutes |
| Model Type | Dimensions [mm] L | Dimensions [mm] W | Dimensions [mm] t | Dimensions [mm] c |
| 73M1A | 3.2 0.3 | 1.6 0.3 | 0.6 0.3 | 0.5 0.3 |
| 73M2A | 6.3 0.3 | 3.2 0.3 | 1.0 - | 1.0 - |
| 73M3A | 6.8 0.3 | 6.5 0.3 | 1.2 Max. | 2.2 0.3 |
| 73M3B | 7.2 0.3 | 6.7 0.3 | 1.3 Max. | 1.1 0.3 |
| 73M5 | 11.4 0.3 | 6.9 0.3 | 1.8 Max. | 1.2 Max. |
2411201003_CTS-73M1AR0025F_C4310550.pdf
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