PTN09S2-H500120K1A PTN09S2-H500120K1A Rotary Potentiometer

PTN09S2-H500120K1A

Overview

PTN09S2-H500120K1A is a high-quality rotary potentiometer manufactured by Same Sky, a reputable producer of electronic components. This specific model falls under the category of passive components, specifically rotary potentiometers, which are electromechanical transducers that convert rotary motion into a change in resistance. As a variable resistor, it allows for the precise adjustment of electrical parameters such as voltage, current, or gain within a circuit. The PTN09S2-H500120K1A is a dual-gang potentiometer, meaning it incorporates two independent resistive elements that are operated simultaneously by a single shaft, making it ideal for stereo audio applications or circuits requiring synchronized control of two parameters. Its robust design and specific attributes cater to a wide range of electronic control needs.

Key Specifications

The PTN09S2-H500120K1A boasts several critical specifications that define its performance and suitability for various applications:

• Taper: Logarithmic – A logarithmic taper, often referred to as an audio taper, means the resistance changes exponentially with shaft rotation. This is crucial for applications where human perception of a parameter, such as volume in audio systems, is non-linear. It provides a more natural and smooth control experience compared to linear potentiometers.
• Detent: Center Detent – The presence of a center detent provides a tactile “click” at the midpoint of the potentiometer’s rotation. This feature is highly beneficial for applications requiring a clear, repeatable neutral or reference position, such as balance controls in audio equipment or specific calibration points in industrial controls.
• Series: PTN09SX – This indicates the component belongs to Same Sky’s PTN09SX series, signifying a family of potentiometers sharing common design characteristics, form factors, and quality standards, ensuring consistency and reliability.
• Switch: Yes – The integrated switch feature means the potentiometer can also act as an on/off switch, typically activated at one extreme of its rotation (often fully counter-clockwise). This saves space and simplifies circuit design by combining two functions in one component, commonly found in volume controls that also power on/off a device.
• Bushing: 7 mm – The bushing diameter specifies the size of the threaded portion that mounts the potentiometer to a panel. A 7mm bushing ensures secure and stable panel mounting, providing mechanical integrity for the component in its end application.
• Power (W): 0.05 – This rating indicates the maximum power the potentiometer can safely dissipate without damage. A 0.05W rating is typical for small signal applications where the current flow through the resistive element is minimal, preventing overheating and ensuring longevity.
• Size (mm): 9.5 – The compact 9.5mm body size makes this potentiometer suitable for designs where space is at a premium, allowing for integration into smaller enclosures and portable devices without compromising functionality.
• Orientation: Horizontal – A horizontal orientation refers to how the potentiometer mounts on a PCB, with its shaft extending parallel to the board surface. This is important for mechanical layout and enclosure design, ensuring proper alignment with front panels.
• Shaft Style: Knurled (18 Teeth) – The knurled shaft with 18 teeth is designed to securely grip standard push-on control knobs without the need for set screws. This provides a reliable mechanical interface for user interaction and simplifies assembly.
• Termination: Straight PC Pins – Straight PC pins are designed for easy insertion into standard through-hole printed circuit board (PCB) layouts. This robust termination method ensures a strong mechanical and electrical connection to the PCB.
• Mounting Type: Through Hole – Through-hole mounting provides excellent mechanical stability and is often preferred for components that experience frequent user interaction or mechanical stress, ensuring the potentiometer remains firmly attached to the PCB.
• Rotation (°): 300 – A 300-degree electrical rotation provides a wide range of adjustment, allowing for fine-tuned control over the desired parameter. This is a standard rotation angle for many rotary potentiometers.
• Number of Gangs: 2 – As a dual-gang potentiometer, it features two independent resistive tracks controlled by a single shaft. This is essential for stereo audio applications (e.g., volume, balance) or any circuit requiring synchronized control of two separate signals.
• Number of Turns: 1 – This is a single-turn potentiometer, meaning the full range of resistance change occurs within one complete rotation of the shaft. This is ideal for applications requiring quick and direct adjustment.
• Resistance (kΩ): 200 – The total nominal resistance of each gang is 200 kΩ. This value is critical for determining the current flow and voltage division within a circuit, making it suitable for high-impedance applications or as a voltage divider.
• Shaft Length (mm): 20 – The 20mm shaft length provides sufficient protrusion from a panel for easy knob attachment and user manipulation, accommodating various enclosure depths.
• Resistance Tolerance (%): 20 – A ±20% resistance tolerance is a common standard for general-purpose potentiometers, indicating the permissible variation from the nominal resistance value. This is acceptable for most applications where precise absolute resistance is not critical.
• Operating Temp Range (°C): -10 ~ 75 – This range specifies the ambient temperature within which the potentiometer can operate reliably without degradation in performance. It indicates suitability for a broad spectrum of indoor and moderately demanding environments.

Features and Benefits

• Integrated Switch Functionality: The built-in switch simplifies circuit design and reduces component count, making it ideal for compact devices that require both variable control and power switching.
• Dual-Gang Design for Stereo/Synchronized Control: With two independent resistive elements, the PTN09S2-H500120K1A is perfectly suited for stereo audio applications, allowing for synchronized adjustment of left and right channels, or for controlling two related parameters simultaneously.
• Logarithmic Taper for Natural Control: The logarithmic resistance taper provides a more intuitive and perceptually linear control experience, especially beneficial for audio volume and gain adjustments where human hearing responds logarithmically.
• Tactile Center Detent: The center detent offers a clear, physical feedback point, making it easy for users to find a neutral or reference position without visual confirmation, enhancing usability in applications like balance controls.
• Robust Through-Hole Mounting: Designed for through-hole mounting, this potentiometer ensures a strong mechanical connection to the PCB, providing enhanced durability and stability, particularly in devices that experience frequent handling or vibration.
• Compact Form Factor: Its small 9.5mm body size allows for integration into space-constrained designs, supporting miniaturization trends in modern electronics.

Typical Applications

• Audio Equipment: The PTN09S2-H500120K1A is exceptionally well-suited for volume controls, balance controls, and tone controls (bass/treble) in stereo amplifiers, mixers, radios, and other audio devices, leveraging its dual-gang, logarithmic taper, and center detent features.
• Consumer Electronics: It can be found in various consumer gadgets requiring user-adjustable settings, such as dimmers for LED lighting, fan speed controllers, and input sensitivity adjustments in home appliances.
• Test and Measurement Instruments: For setting reference points, adjusting gain, or fine-tuning parameters in oscilloscopes, signal generators, multimeters, and other laboratory equipment where precise, repeatable control is necessary.
• Industrial Control Panels: Used in human-machine interfaces (HMIs) for setting operational parameters, calibration points, or speed controls in light industrial machinery, thanks to its robust mounting and clear detent.
• DIY Electronics and Prototyping: Its versatility, standard termination, and ease of use make it a popular choice for hobbyists and engineers developing prototypes, allowing for quick and effective parameter adjustment during circuit development.

Summary

The PTN09S2-H500120K1A rotary potentiometer from Same Sky is a versatile and reliable component designed for applications requiring precise and intuitive control. Its combination of a logarithmic taper, dual-gang configuration, center detent, and integrated switch makes it particularly valuable for audio and general-purpose control circuits. This component is stocked and shipped across India by Cirkit Electro Components, Mumbai, ensuring prompt availability for your design and manufacturing needs.

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