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Specifications
Resistance:
0.25mΩ
Power(Watts):
3W
Type:
Current Sense Resistor
Tolerance:
±1%
Mfr. Part #:
73M3AR00025F
Package:
2725
Key Attributes
Model Number:
73M3AR00025F
Product Description
73M1A, 73M2A, 73M3x & 73M5 Series Current Sensing Resistor Up To 5 Watts
The 73M1A, 73M2A, 73M3x, and 73M5 Series Current Sensing Resistors are metal plate packaged devices designed for excellent accuracy in current detection. Featuring a metal plate construction with a copper alloy, these resistors offer good electrical and thermal characteristics. They are suitable for a wide range of applications including current detection, current limiting, regulated battery circuits, motor control, power supplies, hard disk drives, inverter/converters, industrial equipment, and infotainment systems.
Product Attributes
- Brand: CTS
- Construction: Metal Plate
- Material: Copper Alloy
- Terminal Finish: Matte Tin [e3]
- Reflow Capable: per JEDEC J-STD-020, +260C Maximum
- Packaging: Tape and Reel
Technical Specifications
| Model Type | Power Rating [Watts] | Resistance Range [m] | Resistor 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 | 0.25 - 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 |
Electrical & Environmental Specifications
| Test | Test Description | Maximum Delta R [%] |
|---|---|---|
| Temperature Coefficient | Standard temperature at +25C | |
| 73M1A, 73M2A, 73M5 | 50ppm/C, 10m; 100ppm/C, < 10m | |
| 73M3A | 100ppm/C, 1m; 200ppm/C, < 1m | |
| 73M3B | 50ppm/C | |
| Measured temperature at +150C | ||
| 73M1A, 73M2A, 73M5 | 50ppm/C | |
| 73M3A | 100ppm/C | |
| 73M3B | 50ppm/C | |
| 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 10 9 ohm. Measured at terminals and center of resistor by D.C. 100V 15V in 1 minute [JIS C 5201-1 4.6] | |
| Dielectric Withstanding Voltage | No Breakdown. Applied at terminals and center of resistor on A.C. 500V, 1 minute [JIS C 5201-1 4.7] | |
| Resistance to Solder Heat | No Damage. Place on copper sheet [t = 0.2mm] heated by solder, +260C 5C, 5 0.5 seconds | 0.5 |
| Solderability | Over 95% Coverage. Immerse terminal in solder [Sn3Ag0.5Cu], +245C 0.5C, 3 0.5 seconds [JIS C 5201-1 4.17] | |
| Vibration | No Damage. 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 |
| Resistance to Solvent | No Damage. Immerse in Isopropyl alcohol, +20C to +25C, 60 5 seconds | |
| 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 |
| 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
| 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 | 0.25 - 75 |
| 73M3A | 6.8 0.3 x 6.5 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 |
Terminal Details
Base Metal Copper [Cu]
Barrier Plating Nickel [Ni]
Finish Plating Matte Tin [Sn]
Packaging
| Model Type | Embossed Tape [mm] (W x P1 x E x F x Do x Po x P2 x Ao x Bo x Ko x t) | Reel [mm] |
|---|---|---|
| 73M1A | 8.0 0.15 x 4.0 0.1 x 1.75 0.10 x 3.5 0.1 x 1.55 0.05 x 4.0 0.1 x 2.0 0.1 x 1.83 0.10 x 3.48 0.10 x 0.9 0.1 x 0.20 0.05 | |
| 73M2A | 12.0 0.15 x 4.0 0.1 x 1.75 0.10 x 5.5 0.1 x 1.55 0.05 x 4.0 0.1 x 2.0 0.1 x 3.50 0.10 x 6.74 0.10 x 1.1 0.1 x 0.20 0.05 | |
| 73M3A | 12.0 0.15 x 8.0 0.1 x 1.75 0.10 x 5.5 0.1 x 1.50 0.05 x 4.0 0.1 x 2.0 0.1 x 6.75 0.10 x 7.15 0.10 x 1.7 0.1 x 0.25 0.05 | |
| 73M3B | 12.0 0.15 x 12.0 0.1 x 1.75 0.10 x 5.5 0.1 x 1.55 0.05 x 4.0 0.1 x 2.0 0.1 x 7.70 0.10 x 7.15 0.10 x 1.2 0.1 x 0.25 0.05 | |
| 73M5 | 24.0 0.30 x 12.0 0.1 x 1.75 0.10 x 5.5 0.1 x 1.55 0.05 x 4.0 0.1 x 2.0 0.1 x 7.70 0.10 x 7.15 0.10 x 1.2 0.1 x 0.25 0.05 |
2411201003_CTS-73M3AR00025F_C4303448.pdf
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