Flameproof Rectangular Type Metal Plate Resistor MPR

Product catalog summary

Overview: The document provides technical specifications for the MPR Series Flameproof Metal Plate Resistors by Stackpole Electronics, Inc. These resistors are designed for high power applications with features such as small size, low resistance values, and low inductance. They are RoHS compliant and lead-free.

Specifications:

Electrical Specifications: The resistors have a power rating of 3W to 7W at 70ºC, with a resistance temperature coefficient of ±350 ppm/ºC. The maximum working voltage is 350V, and the maximum overload voltage is 700V.
Mechanical Specifications: Dimensions are provided in both inches and millimeters for various models, including MPR3, MPR5, MPRT3, MPRT5, and MPRT7.

Performance Characteristics:

Short Time Overload: ΔR≤ (2% Ro+0.05Ω) with a test limit of 2.5X for 5 seconds.
Dielectric Withstanding Voltage: 500V.
Thermal Shock: ΔR≤ (2% Ro+0.05Ω).
Load Life and Load Life with Humidity: ΔR≤ (3% Ro+0.05Ω).

Power Derating Curve: The document includes a graph showing the relationship between load factor and temperature rise, indicating how power rating decreases with increasing ambient temperature.

Ordering Information: The document provides a guide on how to order these resistors, including product series, power tolerance, size, resistance value, and packaging options. Legacy part numbers are also mentioned for reference.

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