Common Mode Chokes RN series

The RN series common-mode chokes are designed to attenuate common-mode or asymmetric interference signals by being connected in series with the phase and neutral lines of an AC powerline input. Symmetrical components of noise are also attenuated by the leakage inductance. These chokes are typically used in conjunction with suppression capacitors. They offer high saturation resistance, excellent thermal behavior, and a compact design with multiple PCB-mounting options. Custom-specific versions are available upon request.

Product Attributes

• Brand: Schaffner
• Product Series: RN series
• Certifications: UL 1283, IEC/EN 60938-1, UL 94V-0 (Housing, Potting compound, Ringcore coating)

Technical Specifications

Key Features:

• Attenuates common-mode and asymmetric interference signals.
• Utilizes leakage inductance to attenuate symmetrical noise components.
• High saturation resistance and excellent thermal behavior.
• Through-hole pin connections.
• Dual-choke configuration.
• Small, compact design.
• Multiple housing options available.
• Fully potted design suitable for ruggedized applications.
• Custom-specific versions available on request.

Typical Applications:

• Switch-mode power applications.
• Suppressing common-mode interference levels.
• EMI input filters.
• For suppression equipment with no earth connection.
• Phase-angle control circuits in combination with saturating chokes.

General Specifications:

• Operating Voltage: 300 VAC
• Operating Frequency: DC to 400 Hz
• Rated Currents: 0.3 to 10 A @ rated ambient temperature
• Rated Inductance: 0.4 to 100 mH
• Stray Inductance: Typically 1% of Ln
• Inductance Reduction (DC bias with IN): Less than 10% (25C)
• Surge Current @ 10 msec: 20 x nominal current @ 25C
• Temperature Range (operation and storage): -40C to 100C (40/100/56) acc. IEC 60068-1