RN212-0.5-02 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The RN212-0.5-02 is a 27 mH, 2-line common mode choke manufactured by Schaffner EMC Inc., designed for power line filtering applications in through-hole configurations. This part operates at 500mA typical current with a DC resistance of 1.25Ohm and is rated for 250V AC operation across an operating temperature range of -40°C to 125°C.

The RN212-0.5-02 is classified as obsolete. Equivalent and substitute parts are available to maintain circuit functionality and ensure continued component availability for new designs and legacy system support.

Substiute Parts

RN212-0.5-02

Schaffner EMC Inc.In Stock: 1011RN212-0.5-02 Datasheet

Current PartRFQ

RN212-0.5-02-27M

Schaffner EMC Inc.In Stock: 5043RN212-0.5-02-27M Datasheet

DirectRFQ

B82722J2501N001

EPCOS - TDK ElectronicsIn Stock: 774B82722J2501N001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RN212-0.5-02 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Inductance value: 27 mH (measured at specified frequency)
• Number of lines: 2-line configuration
• Current rating: 500mA or greater
• DC resistance: ≤1.25Ohm (lower or equal values acceptable)
• Voltage rating - AC: ≥250V
• Mounting type: Through hole
• Package configuration: Vertical, 4 PC pin

Acceptable Variations:

• Operating temperature range may extend beyond the original specification
• Inductance measurement frequency may differ (1 kHz vs. 10 kHz) provided inductance value remains 27 mH
• Approval agencies may include additional certifications beyond UR and VDE
• RoHS compliance status may be updated to ROHS3

The substitute parts listed below meet or exceed these parameters and are electrically and mechanically compatible with the RN212-0.5-02.

Parameter Comparison

Engineering Selection Recommendations

RN212-0.5-02-27M (Direct Manufacturer Equivalent)

This part is the active equivalent from Schaffner EMC Inc. and represents the primary substitute for the obsolete RN212-0.5-02. It maintains identical electrical specifications with improved DC resistance (1.2Ohm vs. 1.25Ohm) and higher AC voltage rating (300V vs. 250V). The part carries ROHS3 compliance and expanded approval certifications (ENEC, UR, VDE). Physical dimensions and pin configuration are identical, ensuring direct board-level compatibility. Operating temperature range is reduced to -40°C ~ 100°C, which may require evaluation in applications requiring operation above 100°C.

B82722J2501N001 (Cross-Manufacturer Equivalent)

This EPCOS - TDK Electronics part meets all critical electrical parameters with equivalent inductance, current rating, and DC resistance. It maintains the same AC voltage rating (250V) and operating temperature range (-40°C ~ 125°C) as the original part. Approval certifications include ENEC, UR, and VDE. Physical dimensions are larger (23.30mm L x 16.10mm W vs. 18.00mm L x 12.50mm W), requiring PCB layout verification before implementation. This option provides supply diversity from an alternative manufacturer.

Frequently Asked Questions (FAQ)

Q: Can RN212-0.5-02-27M be used as a direct replacement for RN212-0.5-02?

A: Yes. The RN212-0.5-02-27M is electrically and mechanically compatible with identical physical dimensions and pin configuration. It meets or exceeds all critical parameters including inductance (27 mH), current rating (500mA), and voltage rating (300V vs. 250V original). The reduced operating temperature maximum of 100°C should be evaluated for applications requiring higher temperature operation.

Q: What are the key differences between RN212-0.5-02-27M and B82722J2501N001?

A: Both parts meet the core electrical specifications (27 mH inductance, 500mA current, 1.2Ohm DCR). The primary differences are: manufacturer (Schaffner vs. EPCOS-TDK), physical dimensions (18.00mm vs. 23.30mm length), and operating temperature range (100°C vs. 125°C maximum). The B82722J2501N001 requires PCB layout verification due to larger footprint.

Q: Are there packaging differences between these parts?

A: Yes. The RN212-0.5-02 and RN212-0.5-02-27M are supplied in tube packaging, while B82722J2501N001 is supplied in tray packaging. All three parts use identical through-hole, vertical 4-pin package configuration.

Q: Which substitute should be selected for new designs?

A: RN212-0.5-02-27M is recommended for new designs as the active manufacturer equivalent with expanded certifications and improved specifications. B82722J2501N001 provides an alternative option when supply constraints or design requirements necessitate cross-manufacturer sourcing, provided PCB layout accommodates the larger physical dimensions.

Q: Do all substitute parts meet the same compliance standards?

A: The RN212-0.5-02 carries UR and VDE approvals. RN212-0.5-02-27M adds ENEC certification. B82722J2501N001 includes ENEC, UR, and VDE approvals. All three parts are RoHS compliant. Specific application requirements should determine if expanded certifications are necessary.