Vishay 149 Series 250Ω Cermet Potentiometer, 1W

The Vishay 149 Series 250Ω Cermet Potentiometer is a precision electronic component engineered for reliable circuit adjustment in demanding applications. Featuring a durable cermet (ceramic-metal composite) track, it offers excellent long-term stability, low noise, and resistance to environmental factors. The single-turn design with a screwdriver adjustment slot allows for precise and straightforward manual calibration, making it ideal for setting bias points, gain, and other critical parameters in a circuit.

With a power rating of 1 watt, this potentiometer can handle significant electrical loads, ensuring consistent performance without overheating. Its linear taper provides a direct, proportional relationship between the wiper position and the resistance, which is essential for applications requiring straightforward voltage division or linear control. The component is equipped with PC pins for secure and reliable soldering onto printed circuit boards (PCBs).

Built to operate in a wide temperature range from -40°C to 150°C, it is suitable for use in industrial, automotive, and telecommunications equipment where thermal stability is crucial. The robust construction and high-quality materials guarantee a long service life and dependable resistance values, making it a trusted choice for engineers and technicians.

Key Specifications

• Track Resistance: 250 ohms (Ω)
• Power Rating: 1 watt (W)
• Resistor Technology: Cermet
• Adjustment Type: Single-turn, screwdriver slot
• Track Taper: Linear
• Terminals: PC pins for PCB mounting
• Operating Temperature Range: -40°C to +150°C

This Vishay potentiometer is a fundamental component for anyone involved in electronics prototyping, repair, or production, providing exact and stable variable resistance control.