2mΩ ~ 50mΩ Open Air Low Ohmic Device Is Alternative Current Shunts
Open Air Metal Alloy Current Sense Resistors
A shunt resistor is a low-resistance component used to measure electric current by creating a voltage drop proportional to the current flowing through it. It is typically connected in parallel with an ammeter or in series with the load, allowing for accurate current sensing in various applications.
Features
Power 1-3Watt
±10% and ±5% accuracy Tolerance ±10% or ±5%
TCR: ±50ppm/℃
Low Inductance less than 10 nanohenry
RoHS compliant Lead-free
Special specifications can be customized
Special tight tolerance are available on request
Image Selection
Current sense resistors are designed for sampling current with a very low resistance value from 0.005Ω to 0.1Ω and a very low inductive, offer a high current, flameproof alternative to conventional axial devices and flat chips for current-sense circuits where PC board space is at a premium. The open air resistor's footprint is reduced by extending the height of the device above the board, thus keeping the resistor element's "hot spot" safely off the PC board and providing for increased air circulation under it, which in turn provides increased heat dissipation and cooler operation.
Open Air Metal Alloy Current Sense Resistors, including those with manganese elements, are used for precision current sensing applications. They are designed to have low resistance values and are capable of handling high currents. The manganese alloy, often referred to as Manganin, is known for its stability and low temperature coefficient of resistance, making it suitable for precision current measurement.
Indicate:the Below about Several special shapes
Performance Data
| TEST | cONDIToNS OF TEST | TEST LIMITS | |||
| Thermal Shock | -55℃ to150℃,100 cycles | ±(1.0%+0.00050)△R | |||
| ,15min at each extreme | |||||
| Shot time overload | 5xrated power for 5s | ±(0.5%+0.00050) | △R | ||
| Low temperature storage | -65℃ for 45 min | ±(0.5%+0.0005Q) | △R | ||
| High temperature expo- sure |
1000 h at +170℃ | ±(1.0%+0.00050)△R | |||
Bias humidity |
+85℃85%RH,10%bias,1000 h |
±(0.5%+0.00050)△R ±(0.5%+0.00050)△R |
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| 100 g's for 6 ms,5 pulses | |||||
| Frequency varied 10 Hz to | |||||
| Vibration | 200 Hz in 1min, 3directions,]2h |
±(0.5%+0.00050)△R | |||
| Resistance to solder heat | 1000 h at +70℃,1.5h"ON, 0.5h"OFF |
±(1.0%+0.00050)△R | |||
| Resistance to solder heat | +260℃ solder,10s to 12s dwell,25 mm/s emergence |
±(0.5%+0.00050)△R | |||
| Moisture resistance | MIL-STD-202,method 106,0 %power,7a and 7b not re- quired |
±(0.5%+0.00050)△R | |||
TCR Derating
Applications
1. Inverter and Switching Power Supplies.
2. CPU Drive Control, Power Tool Motor controls.
3. Residual Battery Power Detection, Current Sensing.
Automotive, Feedback System, Power Supply Shunt, Current Detective.
1. Low inductance. Solder ability copper leads (60/40).
2. Radial leads, low resistance value 0.005Ω ~ 0.1Ω.
3. High stability open-air style. Precision alloys resistive element.
4. Standard tolerance ±1%, ±2%, ±5%
5. Open air design and all welded construction
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