55-50-133 SAMARIUS PRECISION INSTRUMENTS Wirewound Ka Nos

Review SAMARIUS PRECISION INSTRUMENTS Wirewound Potentiometers Ka 338k Nos

The Samarius Precision 55-50-133 125x DL4900-82 KA 338k potentiometers are high-performance wirewound adjustable resistors designed for various applications where precise voltage control is essential. These potentiometers come in a standard 5-terminal configuration, with a total length of 125mm and a diameter of 50mm.

The wirewound design of these potentiometers provides several advantages over other types, such as linear taper for smooth and accurate resistance changes, excellent stability over temperature, and low power consumption. The resistance value of these particular units is 338k ohms, making them suitable for voltage dividers, volume controls, and other applications that require a fixed resistance value with high precision.

The Samarius Precision potentiometers are manufactured using high-quality materials and strict tolerances to ensure consistent performance and long-lasting reliability. The wire is made of high-purity carbon composition, ensuring low resistance and stable electrical characteristics. The potentiometer body is made of heavy-duty aluminum, providing excellent heat dissipation and ruggedness.

These potentiometers are also designed to meet various industry standards and specifications, including RoHS compliance, making them an excellent choice for applications in the automotive, industrial, audio, and medical industries. Additionally, the potentiometers come in a protective packaging to ensure safe transportation and handling.

In summary, the Samarius Precision 55-50-133 125x DL4900-82 KA 338k potentiometers are high-performance wirewound adjustable resistors with a resistance value of 338k ohms, designed for applications where precise voltage control is required. They offer excellent stability, smooth taper, and rugged construction, making them a reliable and consistent choice for various industries and applications.

Samarium Precision 55-50-133 DL4900-82 Ka 338k NOS (new old stock) wirewound potentiometers are popular among electronics hobbyists and professionals due to their high precision and stability. Here are some pros and cons of buying these potentiometers:

1. High Precision: These potentiometers offer a high degree of accuracy and stability, making them suitable for critical applications where precise adjustment of voltage or current is required.

2. Long Lasting: Wirewound potentiometers are known for their durability and longevity. They can withstand high temperatures and voltage, making them ideal for industrial applications.

3. Linear Response: These potentiometers provide a linear response, meaning that the resistance changes in direct proportion to the angle of rotation. This makes them suitable for applications where a consistent and predictable output is required.

4. Low Temperature Coefficient: These potentiometers have a low temperature coefficient, which means that their resistance changes very little with temperature. This makes them suitable for applications where temperature stability is important.

1. Expensive: Compared to other types of potentiometers, wirewound potentiometers are more expensive due to their high precision and durability.

2. Fragile: The fine wire used in wirewound potentiometers can be fragile and prone to damage. Care must be taken during installation and use to avoid damaging the potentiometer.

3. Limited Availability: These potentiometers are not as widely available as other types, and may require special ordering from distributors.

In conclusion, Samarium Precision 55-50-133 DL4900-82 Ka 338k NOS wirewound potentiometers offer high precision, durability, and stability, making them suitable for critical applications. However, they are more expensive than other types of potentiometers, and their fine wire can be fragile. If precision and stability are critical requirements for your application, and you have the budget for it, then these potentiometers are a good investment. Otherwise, you may want to consider other types of potentiometers that offer a better balance of cost and performance.

Details:

These came from a bulk surplus lot. These are high-quality USA-made military/aerospace spec components, dated around 1982, stored in original brown Kraft mil packaging from ladle corp / marvel seal. Key features: blue anodized body with metal shaft spline/flat style, 1/4 DOA. Precision wirewound construction excellent for high-reliability applications, instrumentation, avionics, or restoration projects.

USA, part numbers 55-50-133, DL4900-82-m-jw58, etc. Sold as-is in one big lot buyer can repackage or sell individually. For sale is a large lot of 125 pieces genuine new old stock nos Samarius Precision instruments wirewound potentiometers / variable resistors.

specifications passivecompos:

• brand: Samarius Precision Instruments
• mpn: 55-50-133
• part type: Instrument
• termination style: Soldering
• resistance rating: 25 K
• country of origin: United States

general passivecompos:

• category: Business & Industrial > Passive Components > Variable Resistors > Potentiometers

offer passivecompos:

• availability: in stock
• prices: $249.99–$1249.99
• item condition: New
• sold #: 9
• started: may 20, 2026
• best offers: true
• options: ship-to-home
• in stock #: 3

payments passivecompos:

• credit card: diners-club
• other
• wallet: google-pay

shipping passivecompos:

• service: usps ground advantage
• transit: 2-7 days
• carrier: usps
• class: standard
• type: calculated

returns passivecompos:

• policy: no returns

seller passivecompos:

• # reviews: 4467
• rating: 99.7%
• city: holbrook, new york