BVS 4-Pin SMT Manganin Chip Shunt Resistor | Precision Current Sensing
●Accuracy ±0.5%, ±1%±5%
●Electron beam welding process.
●Alloy material: manganese copper (M), kama (K), iron chromium aluminum (F.
●Operating temperature range: -55C~+175℃
●Good product consistency, high reliability, stability, strong pulse resistance.
Description
Overview
The BVS series chip shunt resistor is a high-precision SMT current sensing resistor designed for accurate current measurement in compact electronic systems.
Featuring a 4-pin Kelvin connection structure and manganin alloy resistance element, this chip shunt resistor provides low thermal EMF, excellent resistance stability and reliable performance under high current load conditions.
Designed for BMS, power management systems, industrial electronics and energy monitoring applications, the BVS 4-pin chip shunt resistor helps engineers achieve accurate current detection with minimal measurement error.
Key Features of BVS Chip Shunt Resistor
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High accuracy options: ±0.5%, ±1%, ±5%
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Electron-beam welded structure for excellent consistency and durability
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Low thermal EMF (<1μV/°C) to reduce signal error
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Ultra-low inductance (<3nH), ideal for high-speed switching circuits
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High reliability with strong pulse resistance
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Wide operating temperature: -55°C to +175°C
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Compliant with AEC-Q200 and RoHS environmental standards
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Custom specifications supported for tailored applications
Specifications
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Resistance material: Manganin (M), Kama (K), FeCrAl (F)
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Mounting Type:SMT 4-pin chip package
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Operating temp: -55°C to +175°C
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Resistance tolerance: ±0.5% / ±1% / ±5%
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RoHS & AEC-Q200 compliant
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Custom shape, size, and resistance values available
| Model | W (mm) | H (mm) | B (mm) | L (mm) | C (mm) | A (mm) | P (mm) | D (mm) |
|---|---|---|---|---|---|---|---|---|
| BH-0.3mR | 8.3±0.3 | 6.5±1 | 5±0.3 | 5.3±0.3 | 2.7±0.5 | 3.8±0.5 | 1.3±0.1 | 1.8±0.1 |
| BH-0.5mR | 8.3±0.3 | 5.9±1 | 5±0.3 | 5.3±0.3 | 2.1±0.5 | 3.8±0.5 | 1.3±0.1 | 1.8±0.1 |
| BH-1mR | 8.3±0.3 | 5.5±1 | 5±0.3 | 5.3±0.3 | 1.7±0.5 | 3.8±0.5 | 1.3±0.1 | 1.8±0.1 |
| BH-2mR | 8.3±0.3 | 5.7±1 | 5±0.3 | 5.3±0.3 | 1.9±0.5 | 3.8±0.5 | 1.3±0.1 | 1.8±0.1 |
| BH-3mR | 8.3±0.3 | 5.4±1 | 5±0.3 | 5.3±0.3 | 1.6±0.5 | 3.8±0.5 | 1.3±0.1 | 1.8±0.1 |
For higher power and resistance, please contact the manufacturer for customization.
Performance Testing
| Item | Requirement | Test Method |
|---|---|---|
| Short Time Overload | ±0.2% | Rated Power × 5 for 5 seconds |
| Load Life [Terminal temp. max.105℃] |
±1.0% | 90 min. “ON”, 30 min. “OFF” for 2000 hours |
| Resistance to Soldering Heat | ±0.2% | 350℃ for 30 seconds or 250℃ for 10 min. |
| Thermal Shock | ±0.1% | -65℃ → 25℃ → 125℃ → 25℃, 25 cycles |
| Moisture Resistance | ±0.2% | 90~98% RH, +25℃ → +65℃ → -10℃, 10 cycles |
| High Temperature Exposure | ±0.2% | 140℃ for 250 hours |
| Vibration, High Frequency | ±0.2% | 15g, 10~2000Hz, 36 cycles |
| Inductance | < 3nH | 2μVrC max. |
| Thermal EMF | 0–100℃ | [pV/℃] |
| Current Noise | ±0.01% | MIL-STD-202 Method 308 |
| Voltage Coefficient | Linearity error < 120dB | MIL-STD-202 Method 309 |
| Shock | ±0.2% | 50g’s, 11ms |
Why Choose a 4-Pin Chip Shunt Resistor?
Unlike conventional two-terminal shunt resistors, a 4-pin chip shunt resistor separates the current path and voltage sensing path.
This Kelvin connection design reduces errors caused by PCB trace resistance and contact resistance, improving measurement accuracy in precision current sensing applications.
The BVS series is especially suitable for systems requiring stable current monitoring, including battery management systems, power modules and industrial controllers.
Applications of Chip Shunt Resistors in Power Electronics
Chip shunt resistors are widely used for precise current measurement in modern electronic systems.
Typical applications include:
– Battery Management Systems (BMS)
– Electric vehicle battery monitoring
– DC power supplies
– Power converters
– Energy storage systems
– Industrial control equipment
– Motor control systems
– Smart energy meters
In EV and BMS applications, manganin chip shunt resistors provide accurate charging and discharging current measurement while maintaining low temperature drift and long-term stability.
The compact SMT design makes them suitable for space-limited PCB layouts where high accuracy and reliable current sensing are required.
FAQ
What is a chip shunt resistor?
A chip shunt resistor is a low resistance current sensing component used to measure electrical current by detecting the voltage drop across the resistor.
What is the advantage of a 4-pin shunt resistor?
A 4-pin shunt resistor uses separate current and voltage sensing terminals, reducing measurement errors caused by PCB resistance and improving accuracy.
Why use manganin for chip shunt resistors?
Manganin provides excellent resistance stability, low thermal EMF and low temperature coefficient, making it suitable for precision current measurement.
