The Sart high-power alloy precision resistance SMSP series adopts the process of electron beam welding and stamping of alloy materials, and its main materials include MnCu, Karma, and FeCr. Because its core material is pure metal alloy, it is also referred to as alloy resistance or low resistance shunt resistance by many engineers. The main characteristics of Sart high-power alloy low resistance shunt resistors include: ultra-low resistance (as low as 0.2m Ω), ultra-high power (up to 15W), ultra-low inductance (<5.0nH), etc. This article will provide a detailed introduction to the product characteristics and product selection parameters of Sart's (Sat) high-power metal precision resistor SMSP series.
The main product characteristics of the Sart high-power alloy precision resistance SMSP series are as follows:
1. Product volume (packaging): 251239215931
2. High product rated power: up to 15W (70 ℃)
3. Resistance range: 0.2m Ω~5m Ω (m Ω=milliohms)
4. Low TCR (TCR=Low Resistance Temperature Coefficient)
5. Low EMF (low thermal electromotive force effect)
6. Lead free and halogen-free compliant with RoHS
The main application markets of Sart's high-power alloy precision resistance SMSP series products are as follows:
1. Switching power supply and power adapter, etc
2. Power management system and BMS, etc
3. Industrial automation equipment
4. Frequency converter
5. Home appliances
6. Power amplifier
The external dimensions of the Sart high-power alloy precision resistance SMSP series are as follows:
|
Type |
Resistance range (mΩ) |
L (mm) |
W (mm) |
A (mm) |
H (mm) |
|
|---|---|---|---|---|---|---|
| 3921 | 0.2～5 | 10.00±0.30 |
5.20±0.30 |
2.00±0.30 |
0.50±0.10 | |
| 5931 | 0.2～3 | 15.00±0.30 |
7.70±0.30 |
4.20±0.30 |
0.50±0.10 | |
| 2512 | 1、2 | 6.40±0.20 |
3.20±0.25 |
1.20±0.20 |
0.50±0.10 | |
The electrical specifications for the selection of the Sart high-power alloy precision resistance SMSP series are as follows:
| Part Number | Power Rating at 70℃(W) |
Resistance Range(mΩ) |
material |
TCR(ppm/℃) (10-6/℃) |
Resistance Tolerance | Operation Temp. Range |
|---|---|---|---|---|---|---|
| 3921 | 12 | 0.2 |
MnCu |
±150 |
±1%（F） ±2%（G） ±5%（J） |
-55℃~+170℃ |
| 9 | 0.3、0.5、1 | |||||
| 1 |
Karma |
±75 | ||||
| 5 | 1、2、3、4、5 | FeCr |
||||
| 5931 | 15 | 0.2 |
MnCu |
±150 | ||
| 10 | 0.3、0.5 | |||||
| 1 |
FeCr |
±75 | ||||
| 7 | 2、3 | |||||
| 2512 | 5 | 1 |
MnCu |
±150 |
||
| 2 | FeCr | ±75 |
The above is an introduction to the electrical parameters and product characteristics of the Sart high-power alloy precision resistance SMSP series. For more detailed product information and purchasing, please consult online customer service.
