WH158-1

WH158-1

Product Overview

WH158-1 is an ultra-thin, edge-driven potentiometer featuring a flat dial design with the edge exposed. It is specifically engineered for miniature portable electronic products where space is extremely limited. This product replaces the traditional rotary shaft of conventional potentiometers with a horizontally extended flat plastic disc; once installed, the edge of the disc protrudes from the device’s housing. Users can adjust the resistance value by flicking the disc’s edge, providing excellent tactile feedback even when operating blindly. The resistor element typically employs a carbon film structure, with a thickness of only 2mm to 4mm, achieving an exceptionally high degree of height-space compression. It perfectly fits into portable electronic enclosures with stringent thickness requirements while also meeting the biocompatibility and miniaturization standards of medical-grade hearing aids, helping reduce product volume by up to 20% and enhancing wearing comfort.

Operating Principle

This potentiometer is redesigned based on the core principle of rotary potentiometers, replacing the traditional long shaft with a horizontally extended flat plastic disc. After installation, the edge of the disc remains visible outside the device’s housing. Users do not need to see the potentiometer itself—by simply flicking the disc’s edge with their fingers, they can move the internal sliding contact along the resistor element, precisely adjusting the resistance value. This design eliminates the protruding long shaft characteristic of traditional potentiometers, achieving both resistance adjustment and maximum height-space reduction, while delivering convenient blind operation.

Key Performance Parameters

1. Resistor Material: Carbon Film
2. Product Thickness: 2mm–4mm, with a minimum achievable thickness of under 2mm
3. Standard Resistance Value: 10kΩ
4. Rated Power: 0.05W
5. Physical Dimensions: Minimum diameter of 10mm and thickness of 2mm
6. Compliance Standards: Meets biocompatibility requirements for medical-grade hearing aids

Core Advantages

1. Ultra-Thin Design: With a thickness of only 2mm–4mm, and a minimum of under 2mm, this product achieves exceptional height-space compression, easily fitting into portable electronic enclosures with strict thickness constraints. It solves the problem of traditional long-shaft potentiometers being unable to adapt to ultra-thin devices.
2. Excellent Blind Operation Experience: Featuring an edge-exposed flat dial design, users can adjust resistance values simply by flicking the disc’s edge without visual confirmation, making it especially suitable for devices worn on the ear or carried in pockets.
3. Medical-Grade Compliance: Meeting biocompatibility requirements for medical-grade hearing aids, it can be safely used in hearing aids and other close-fitting medical electronic devices, ensuring user safety.
4. Supports Product Miniaturization: With a minimum physical size of 10mm in diameter and 2mm thick, it helps reduce product volume by up to 20%, significantly improving the wearing comfort and portability of portable devices.
5. Stable and Durable Performance: The carbon film resistor structure ensures stable performance, with a rated power of 0.05W, satisfying the low-power adjustment needs of miniature electronic devices and guaranteeing reliable long-term use.

Core Value of the Product

1. Its ultra-thin structure breaks through spatial limitations, enabling ultra-thin industrial designs for miniature portable electronics without requiring additional height space for potentiometer installation.
2. The blind-operation design enhances user experience, particularly for devices like hearing aids and in-ear headphones that cannot be operated visually, making control more convenient.
3. Medical-grade compliance ensures safe application, allowing direct integration into close-fitting medical devices such as hearing aids without additional compliance testing.
4. By reducing product volume by up to 20%, it improves the wearing comfort and portability of portable devices, strengthening their market competitiveness.

Target Customer Groups

Hearing aid manufacturers, portable pocket radio producers, handheld gaming peripheral suppliers, over-ear headphone makers, and other companies focused on developing and producing miniature ultra-thin electronic devices. These enterprises generally face strict height-space constraints while demanding ease of operation and high compliance standards. This potentiometer perfectly aligns with their product design needs.

Application Scenarios

Designed specifically for miniature ultra-thin electronic devices, this potentiometer is primarily used in the following scenarios: adjusting the volume of behind-the-ear hearing aids, leveraging its ultra-thin structure to integrate seamlessly into the hearing aid housing so users can conveniently regulate volume through blind operation; controlling the volume of in-ear wired headphones, adapting to the ultra-thin design of headphone cables for easy on-the-go volume adjustments; fine-tuning the backlight brightness of retro handheld game consoles, embedded within the console’s slim body, allowing users to adjust backlight intensity according to ambient lighting conditions and enhance their overall experience. Additionally, it can be applied to other miniature electronic products with limited height space that require blind operation for adjustment.

Solutions to Industry Pain Points

In the research and production of miniature, ultra-thin electronic devices, the long shaft structure of traditional rotary potentiometers has long been a major design challenge: the protruding shaft cannot fit into ultra-thin housings, forcing improper installation that compromises the overall design and may even render the device unusable. WH158-1 elegantly resolves this issue by adopting a flat dial edge-driven design, completely eliminating the long shaft and compressing the height to just 2mm–4mm, thus fulfilling the “hidden” and “edge-sliding” industrial design requirements of these devices. Meanwhile, its blind-operation feature addresses the difficulty users face when operating close-fitting, portable devices without visual access, and its medical-grade compliance tackles the safety adaptation challenges of hearing aids and other medical devices, comprehensively meeting the design and usage needs of miniature ultra-thin electronics.

Common Questions FAQ

Q1: What is the thickness range of the WH158-1 potentiometer?
A: The typical thickness of this potentiometer is 2mm–4mm, with a minimum achievable thickness of under 2mm, satisfying the space requirements of most ultra-thin electronic devices.
Q2: Is this potentiometer suitable for use in hearing aids?
A: Yes, it meets medical-grade biocompatibility and miniaturization requirements for hearing aids, making it safe for adjusting the volume of behind-the-ear hearing aids and helping reduce their overall size by up to 20%, thereby improving wearing comfort.
Q3: How do users operate this potentiometer?
A: After installation, the edge of the flat dial protrudes from the device’s housing. Users do not need to see it—simply flick the disc’s edge with their fingers to adjust the resistance value, offering excellent tactile feedback during blind operation.
Q4: What is the standard resistance value of this potentiometer?
A: The standard resistance value is 10kΩ, with a rated power of 0.05W, sufficient to meet the low-power adjustment needs of miniature electronic devices.