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Specifications
Mfr. Part #:
73M1AR050F
Package:
1206
Key Attributes
Model Number:
73M1AR050F
Product Description
Product Overview
The 73M1A, 73M2A, 73M3x, and 73M5 Series are metal plate packaged current sensing resistors designed for excellent accuracy in current detection and limiting applications. These resistors offer robust electrical and thermal characteristics due to their special metallic resistor material, making them suitable for demanding industrial and power applications.
Product Attributes
- Brand: CTS Corporation
- Construction: Metal Plate
- Material: Copper Alloy
- Terminal Finish: Matte Tin [e3]
- Certifications: Reflow Capable per JEDEC J-STD-020, +260C Maximum
- Packaging: Tape and Reel
Technical Specifications
| Model Type | Power Rating [Watts] | Resistance Range [m] | Resistance Tolerance [%] | Rated Ambient Temperature | Operating Temperature Range | Temperature Coefficient |
| 73M1A | 1.0 | 0.25 - 50 | 1 | +70C | -55C to +155C | R < 0.010: 100ppm/C, R 0.010: 50ppm/C |
| 73M2A | 2.0 | 1 - 75 | 1 | +70C | -55C to +155C | R < 0.010: 100ppm/C, R 0.010: 50ppm/C |
| 73M3A | 3.0 | 0.25 - 3 | 1 | +70C | -55C to +155C | R 0.001: 200ppm/C, R > 0.001: 100ppm/C |
| 73M3B | 3.0 | 4 - 100 | 1 | +70C | -55C to +155C | 50ppm/C |
| 73M5 | 5.0 | 1 - 120 | 1 | +70C | -55C to +155C | R < 0.010: 100ppm/C, R 0.010: 50ppm/C |
| Test | Test Description | Maximum Delta R [%] | Conditions |
| 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 | Measured at terminals and center of resistor by D.C. 100V 15V in 1 minute [JIS C 5201-1 4.6] | Over 109 ohm | |
| Dielectric Withstanding Voltage | Applied at terminals and center of resistor on A.C. 500V, 1 minute [JIS C 5201-1 4.7] | No Breakdown | |
| Resistance to Solder Heat | Place on copper sheet [t = 0.2mm] heated by solder, +260C 5C, 5 0.5 seconds | 0.5 | No Damage |
| Solderability | Immerse terminal in solder [Sn3Ag0.5Cu], +245C 0.5C, 3 0.5 seconds [JIS C 5201-1 4.17] | Over 95% Coverage | |
| Vibration | Frequency 10Hz to 55Hz, Pk-Pk amplitude 15mm, sweeping rate 1 minute, 3 directions each 2 hours [JIS C 5201-1 4.22] | 0.5 | No Damage |
| Resistance to Solvent | Immerse in Isopropyl alcohol, +20C to +25C, 60 5 seconds | No Damage | |
| High Temperature Exposure | 1,000 hours @ +155C 2C, bias load 0% power [JIS C 5201-1 4.23.2] | 2.0 | |
| Change of Temperature | 30 minutes @ -55C, 3 minutes @ +25C, 30 minutes @ +155C, 3 minutes @ +25C; 5 cycles | 0.5 | No Damage |
| 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 |
| 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 1.6 0.3 | 1 - 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 |
2412111354_CTS-73M1AR050F_C6100923.pdf
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