Model Information: RCMS0539202FHA20

Overview

The RCMS0539202FHA20 is a molded metal film high stability resistor designed and manufactured by Vishay Sfernice. This resistor is known for its excellent long-term stability and precision, making it suitable for a variety of applications where reliable performance is critical.

Key Features

• Power Rating at 70°C: 0.125 W, 0.250 W, and 0.500 W
• Temperature Coefficient: ≤ ± 30 ppm/°C in the range of -10°C to +70°C
• Initial Precision: Up to ± 1%
• Insulation Resistance: Typical values of 106 MΩ
• Termination: Pure matte tin
• Material Categorization: For definitions of compliance, please refer to Vishay's documentation.

Dimensions

• Series A:

Electrical Specifications

• Resistance Range: 1 Ω to 150 kΩ
• Rated Power P70 °C: 0.125 W, 0.250 W, 0.500 W
• Limiting Element Voltage: 300 V, 350 V, 400 V
• Tolerance: ± 1%

Technical and Quality Specifications

• Reference under CECC 40 101:
• MIL-R-105509 F equivalent reference: RN55C, RN60C, RN65C
• Environmental Specification: -65°C / +155°C / 56 days

Performance

• Load Life at Max. Category Temperature: 1000 h at 125 °C, 50% of Pn ≤ ± (1% + 0.05 Ω)
• Short Time Overload: 2.5 Un / 5 s Limited to 2 Um ≤ ± (0.25% + 0.05 Ω)
• Damp Heat Humidity (Steady State): 56 days with low load ≤ ± (1% + 0.05 Ω)
• Rapid Temperature Change: -55°C +125°C ≤ ± (0.25% + 0.05 Ω)
• Climatic Sequence: -55°C +125°C severity 1 ≤ ± (0.5% + 0.05 Ω)

Marking

• Printed: Vishay Sfernice trademark, series, ohmic value (in Ω), tolerance (in %), temperature coefficient, manufacturing data.