Potentiometer WH148, 3-pin

The WH148 panel rotary potentiometer is a passive control element designed for continuous resistance change in electrical and electronic circuits. The 3-terminal design allows use as a voltage divider and as a variable resistor. The product is available in linear characteristic B in several resistance values for installation in devices, control panels and hobby and service applications.

Technical specifications

• Product type: rotary potentiometer
• Model series: WH148
• Design: axial, panel mounting
• Number of pins: 3 pins
• Characteristics: linear, designation B
• Version: mono
• Track type: wire
• Number of revolutions: 1
• Rotation angle: 300°
• Nominal resistance values: B1K, B2K, B5K, B10K, B20K, B50K, B100K, B250K, B500K, B1M (depending on variant)
• Resistance tolerance: ±20%
• Linearity tolerance: ±5%
• Power loss Pd: 125 mW
• Maximum operating voltage: 200 V
• Minimum insulation resistance: 1000 mOhm
• Body dimensions: 29x25x17 mm
• Shaft length: 13 mm
• Shaft diameter: 6 mm
• Pin spacing: 5 mm
• Mounting hole diameter: 7.2 mm
• Fastening: with nut

Functions and features

• Manual resistance adjustment by turning the shaft.
• The three-terminal connection allows use as a voltage divider.
• The linear resistance change is suitable for technical control and adjustment functions.
• The axial shaft is designed for mounting in a panel or front plate of the device.
• Mechanical fastening with a nut ensures a firm fit in the mounting hole.
• The availability of multiple resistance variants makes it easier to choose the appropriate control range.

Ideal for

• Signal level regulation in electronic circuits.
• Adjustment and control elements in devices and panels.
• Kits, prototypes and electronics service repairs.
• Simple analog control circuits.

Package contents

• 1x potentiometer WH148, 3pin

Why choose this product?

• Clearly defined linear characteristic B for technical use.
• Wide selection of resistance values within one design series.
• Compact panel design with standard three-pin connection.
• Known mounting dimensions make it easy to design and replace the component.

Installation and operating instructions

• Install into a hole of the appropriate diameter and secure the potentiometer with a nut.
• When soldering, limit the heating time of the pins to avoid damage to the internal structure.
• Before installation, verify the required resistance value and correct connection of the outer and middle terminals.
• Observe the maximum operating voltage and power dissipation of the component.

Safety notice

• The component is not intended to operate above the specified electrical load limit.
• Incorrect wiring may damage the potentiometer or the downstream circuit.
• Only perform installation and service when the power supply is disconnected.
• When used in equipment connected to hazardous voltages, appropriate structural protection and professional installation must be ensured.