Walter alloy current detection resistor STE series selection manual and purchase address: click on the image to enter
Current detection resistor is a resistor placed in the current channel to measure current. The voltage at both ends of the current detection resistor is proportional to the current to be measured, and the amplifier provides the corresponding voltage or current drive. Below is a detailed introduction to the current detection resistance of Suzhou Huade Walter alloy.
The Suzhou Walter Electronic Walter alloy current detection resistor STE series has the following advantages:
1. Wide range of volume options: 0603,0805,1206,2010,2512,3921,4527
2. Wide range of resistance options: 0.002R~0.7R
3. Wide range of power options: 0.5W~5W
4. High accuracy: △ ≤ 1%
5. Low temperature coefficient: TCR ＜ 50ppm/℃
6. High frequency response: H ＜ 5.0nH
7. Excellent low galvanic effect (EMF<0.5uV/℃)
8. How to use RoHS and REACH halogen-free standards
9. The anti welding layer complies with UL94-V0 level
10. Low inductance (<0.05uH 10MHz)
The Naming convention of Suzhou Walter Electronic Walter alloy current detection resistance STE series are as follows:
| STE | 1206 | M | 1W0 | R005 | F | S |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
1: Product series: STE series, metal ceramic alloy current detection resistor, short electrode, two terminals, with side conductor.
2: Volume: 1206=3216=3.3 * 1.7mm
3: Material: M=Manganese copper alloy=MnCu alloy
4: Power: 1W0=1.0Watt
5: Resistance value: R005=0.005R=5mR
6: Accuracy: F=1%, J=5%
8: Product code: internal code or custom code
The selection parameters of the STE series of Suzhou Huade Electronics Walter alloy current detection resistors are shown in the table below:
|
Part Number |
Resistance Value (mΩ) |
Power Rating (Watt) |
Resistance Tolerance (%) |
TCR (ppm/℃) |
| STE0603M0W50R | 5~9 | 0.5 | ±1%（F） | ±75ppm |
| 10~100 | 0.5 | ±0.5%（D）±1%（F） | ±50ppm | |
| STE0805MW75R | 3 | 0.75 | ±1%（F） | ±75ppm |
| 4~500 | 0.75 | ±0.5%（D）±1%（F） | ±50ppm | |
| STE1206M1W0R | 3 | 0.75 | ±1%（F） | ±75ppm |
| 4~700 | 0.75 | ±0.5%（D）±1%（F） | ±50ppm | |
| STE2010M1W5R | 2 | 1.5 | ±1%（F） | ±100ppm |
| 4~700 | 1.5 | ±0.5%（D）±1%（F） | ±50ppm | |
| STE2512M2W0R | 2 | 1.5 | ±1%（F） | ±75ppm |
| 4~700 | 1.5 | ±0.5%（D）±1%（F） | ±50ppm | |
| STE3921M3W0R | 2 | 3 | ±1%（F） | ±100ppm |
| 4~100 | 3 | ±0.5%（D）±1%（F） | ±50ppm | |
| STE4527M4W0R | 2 | 3 | ±1%（F） | ±100ppm |
| 4~100 | 3 | ±0.5%（D）±1%（F） | ±50ppm |
Walter alloy current detection resistor STE functional characteristics:
|
Parameter |
Conditions |
Consent Standard |
|
Short time over load |
Power=2.5*Pr ; T=25±2℃ ; t=5s |
± (1.0%+0.5mΩ) IEC60115-1 4.13
|
|
High temp. exposure |
T=+155±2℃; t=1,000hrs |
± (1.0%+0.5mΩ) IEC60115-1 4.25 |
|
Low temp. load life |
T=-55±2℃ ; t=1,000hrs |
± (1.0%+0.5mΩ) IEC60115-1 4.25 |
|
Moisture load life |
Vtest=Vmax, ton=90min,toff=30min, T=60±2℃,RH=95%,1,000hrs |
± (2.0%+0.5mΩ) IEC60115-1 4.25 |
|
Thermal shock |
[-55℃ 30min→ R.T. 3min→ +150℃ 30min→ R.T. 3min] by 100 Continuous Cycles |
± (1.0%+0.5mΩ) IEC60115-1 4.19 |
|
Load life at 70℃ |
Vtest=Vmax ; T=70±2℃ ; t=90min On t=30min Off; 1,000hrs |
± (2.0%+0.5mΩ) IEC60115-1 4.25 |
|
Solderability |
Dipped into solder at 245±5℃ for 3±1s |
The covered area >95% IEC60115-1 4.17 |
|
Resistance to solder heat |
20±1s at 275±5℃ |
±（1%＋0.5mΩ） IEC60115-1 4.18 |
|
Substrate bending |
Span between fulcrums: 90mm; Bend width: 2mm; Test board: Glass-epoxy board, Thickness=1.6mm by 10 continuous cycles |
±（1%＋0.5mΩ） IEC60115-1 4.33 |
|
Mechanical shock |
a=100G for 11ms, 5 Pulse |
±（1%＋0.5mΩ） IEC60115-1 4.21 |
