Product Overview
The WSL1206R0150FEA18 is a high-power current sense resistor from Vishay Dale’s Power Metal Strip® WSL-18 series. It features 15mΩ (0.015Ω) resistance with ±1% tolerance in a 1206 package size. The metal strip construction provides extremely low inductance (0.5nH to 5nH), low thermal EMF (< 3µV/°C), and excellent high-frequency response up to 50MHz. The '18' suffix indicates the high-power version with 2x standard WSL power rating (500mW at 70°C ambient). This resistor is AEC-Q200 qualified for automotive applications and features anti-sulfur construction for high-sulfur environments. Ideal for all types of current sensing, voltage division, and pulse applications including switching and linear power supplies.
Key Specifications
| Type | Power Metal Strip Current Sense Resistor (High-Power) |
| Series | WSL-18 (Vishay Dale) |
| Package / Case | 1206 / 3216 Metric (3.2 × 1.6 × 0.635 mm) |
| Resistance | 15 mΩ (0.015 Ω) |
| Tolerance | ±1% (F) |
| Power Rating | 500 mW @ 70°C (high-power 2x version) |
| Temperature Coefficient | ±75 ppm/°C |
| Inductance | 0.5 nH ~ 5 nH (extremely low) |
| Thermal EMF | < 3 µV/°C |
| Frequency Response | Up to 50 MHz (excellent) |
| Technology | Metal Strip |
| Construction | All welded, solid metal alloy element |
| Special Features | AEC-Q200, Anti-Sulfur, Low Inductance |
| Operating Temperature | -65°C ~ +170°C |
| Termination | Matte Tin over Nickel barrier |
| Mount Type | Surface Mount (SMD) |
| RoHS | Compliant |
Features
- 15mΩ low-value current sense resistor
- ±1% tight tolerance
- 500mW high power rating (WSL-18, 2x standard)
- Ultra-low inductance: 0.5-5nH
- Low thermal EMF < 3µV/°C
- Excellent frequency response to 50MHz
- AEC-Q200 automotive qualified
- Anti-sulfur construction
- All welded metal strip construction
- Vishay Power Metal Strip technology
- RoHS compliant
Applications
- Current sensing in power supplies
- Battery management systems (BMS)
- Motor control and drives
- Overcurrent protection circuits
- Switching regulators (DC-DC converters)
- Automotive electronics (AEC-Q200)
- Power management ICs
- Pulse applications