RN212-0.8-02 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The RN212-0.8-02 is a 2-line common mode choke manufactured by Schaffner EMC Inc., designed for power line filtering applications in through-hole mounting configurations. This component features 10 mH inductance at 1 kHz with an 800 mA typical current rating and 370 mOhm DC resistance. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

RN212-0.8-02

Schaffner EMC Inc.In Stock: 910RN212-0.8-02 Datasheet

Current PartRFQ

RN212-0.8-02-10M

Schaffner EMC Inc.In Stock: 3429RN212-0.8-02-10M Datasheet

DirectRFQ

B82721K2701N020

EPCOS - TDK ElectronicsIn Stock: 8949B82721K2701N020 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN212-0.8-02 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Number of lines: 2 (fixed requirement)
• Mounting type: Through hole (fixed requirement)
• Inductance value: 10 mH (fixed requirement)
• Package configuration: Vertical, 4 PC pin (fixed requirement)

Allowable Variation Parameters:

• Inductance frequency: Measurement frequency may vary (1 kHz vs. 10 kHz)
• Current rating: Must meet or exceed 800 mA requirement
• DC resistance: Acceptable within typical engineering tolerances
• Voltage rating: Must meet or exceed 250 V AC
• Operating temperature: Must cover or exceed -40°C ~ 125°C range
• Physical dimensions: Minor variations acceptable within mechanical envelope constraints
• Regulatory compliance: RoHS and international certifications

Parameter Comparison

Engineering Selection Recommendations

RN212-0.8-02-10M (Direct Substitute - Preferred)

This part is the primary substitute for the obsolete RN212-0.8-02. Both components are manufactured by Schaffner EMC Inc. within the same RN series. The RN212-0.8-02-10M maintains identical physical dimensions, mounting configuration, and electrical performance specifications. The inductance measurement frequency differs (10 kHz vs. 1 kHz), but the 10 mH value remains constant. The substitute provides enhanced voltage rating (300 V vs. 250 V AC) and expanded regulatory certifications (ENEC, UR, VDE vs. UR, VDE). Product status is active with established supply chain availability. Operating temperature range is -40°C ~ 100°C, which covers the primary operating window of the original part.

B82721K2701N020 (Similar Substitute - Secondary Option)

This EPCOS - TDK Electronics component provides functional equivalence with notable trade-offs. Physical dimensions are slightly larger (18.20 x 13.20 x 20.90 mm vs. 18.00 x 12.50 x 20.30 mm), requiring verification of mechanical fit within the target application. Current rating is reduced to 700 mA, making this substitute unsuitable for applications requiring the full 800 mA capacity of the original part. DC resistance is elevated at 550 mOhm compared to 370 mOhm, resulting in increased power dissipation. Voltage rating and operating temperature range match or exceed the original specifications. Product status is active with established supply availability. This substitute is applicable only when current requirements do not exceed 700 mA and mechanical envelope constraints permit the larger footprint.

Frequently Asked Questions (FAQ)

Q: Can RN212-0.8-02-10M be used as a direct replacement for RN212-0.8-02?

A: Yes. Both components share identical physical dimensions, mounting type, package configuration, and 10 mH inductance value. The measurement frequency difference (1 kHz vs. 10 kHz) does not affect functional equivalence. The substitute offers improved voltage rating and expanded certifications.

Q: What are the limitations of using B82721K2701N020 as a substitute?

A: The B82721K2701N020 has a reduced current rating of 700 mA versus the original 800 mA specification. This substitute is not suitable for applications requiring the full current capacity. Additionally, physical dimensions are slightly larger, requiring mechanical fit verification. DC resistance is higher at 550 mOhm, increasing power dissipation compared to the original 370 mOhm specification.

Q: Are there packaging differences between the substitute parts?

A: RN212-0.8-02-10M is supplied in tube packaging, while B82721K2701N020 is supplied in tray packaging. Both maintain the same through-hole vertical 4-pin configuration suitable for PCB assembly.

Q: Do the substitute parts meet the same regulatory requirements?

A: RN212-0.8-02-10M meets UR, VDE, and ENEC certifications, exceeding the original part's UR and VDE approvals. B82721K2701N020 also meets UR, VDE, and ENEC certifications. Both substitutes are ROHS3 compliant, meeting current environmental standards.

Q: What is the operating temperature range difference for RN212-0.8-02-10M?

A: The substitute operates from -40°C to 100°C, compared to the original -40°C to 125°C range. For applications requiring operation above 100°C, the original specification must be verified or alternative solutions considered.

Q: How do DC resistance values affect component selection?

A: DC resistance determines power dissipation in the component. The original RN212-0.8-02 has 370 mOhm DCR. RN212-0.8-02-10M maintains 380 mOhm (negligible difference), while B82721K2701N020 has 550 mOhm (48% higher). Higher DCR results in increased heat generation and should be evaluated for thermal management in the target application.