AHA25AFB-15R

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Chassis Mount Resistors are devices used to limit electrical current, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines. This type of component is typically constructed using discrete resistors mounted on an insulated base, or constructed by depositing thin-film or thick-film materials on a ceramic substrate. The AHA25AFB-15R is a chassis mounted resistor designed for applications that require high accuracy and dependable performance.

AHA25AFB-15R Application Field and Working Principle

The AHA25AFB-15R is a 25 watt axial lead resistor with a resistance value of 15K Ohms. It is designed for use in medical, aerospace, and automotive applications, where precision and accuracy are of utmost importance. The resistor features a sleeved-in, heavy-duty, point-contact construction, allowing it to withstand high currents and thermal pollution.

The AHA25AFB-15R is a voltage and temperature coefficient-free resistor case. It has an off-state voltage rating of 250Vdc and has a rated power dissipation of 25 watts at 25°C. The terminal block connectors are rated to withstand a maximum of 50Vdc and 100Vac, depending on the application. The resistance range for this type of resistor is between 10K and 20K Ohms, with a tolerance of ±5%. The resistor features a moderately high power rating, excellent thermal and electrical isolation, low power dissipation, and a wide temperature coefficient range (-40°C to +125°C).

The AHA25AFB-15R is designed using lead-free, RoHS compliant material and processes. The construction of these resistors allows for a variety of mounting options, such as through-hole, surface mount, and wire-wrap. It is also capable of featuring a snap-on or slide-on clips for attaching the resistor to the chassis. The body of the resistor is made from flame retardant, UL94-VO rating material.

The working principle of the AHA25AFB-15R is based on Ohm’s law. When a voltage is applied across the resistor, a current will flow through it proportionally to the resistance value. The current flowing through the resistor generates heat, and this heat must be dissipated efficiently to ensure the resistor operates within safe operating temperatures. The resistance value of the AHA25AFB-15R is determined by the material used to construct it, and the size of the resistor. It is constructed in a way so that its resistance will not change as a result of temperature changes.

In conclusion, the AHA25AFB-15R Chassis Mount Resistor is a high-precision, high-accuracy device with excellent resistance and temperature coefficient values. It is designed to withstand high currents, and to dissipate heat efficiently. The resistor is ideal for medical, aerospace, and automotive applications, and can be used for both surface mount and through-hole mounting.

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