RN102-2-02 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The RN102-2-02 is a 1.1 mH, 2-line common mode choke designed for power line filtering applications in through-hole configurations. Manufactured by Schaffner EMC Inc., this component operates at 2A typical current with 70mOhm DC resistance and is rated for 250V AC operation across -40°C to 125°C. The RN102-2-02 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

RN102-2-02

Schaffner EMC Inc.In Stock: 1097RN102-2-02 Datasheet

Current PartRFQ

RN102-2-02-1M1

Schaffner EMC Inc.In Stock: 1215RN102-2-02-1M1 Datasheet

DirectRFQ

EH28-5.0-02-1M1

Schaffner EMC Inc.In Stock: 947EH28-5.0-02-1M1 Datasheet

SimilarRFQ

B82720A2202N040

EPCOS - TDK ElectronicsIn Stock: 1618B82720A2202N040 Datasheet

SimilarRFQ

B82720K2202N040

EPCOS - TDK ElectronicsIn Stock: 990B82720K2202N040 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RN102-2-02 is determined by the following critical parameters:

• Inductance Value: 1.1 mH nominal inductance
• Current Rating: Minimum 2A capability
• Number of Lines: 2-line configuration for common mode filtering
• Mounting Type: Through-hole technology
• DC Resistance: Maximum 70mOhm to maintain electrical performance
• Voltage Rating: Minimum 250V AC operation
• Operating Temperature Range: Support for -40°C to 125°C
• Package Configuration: Horizontal or vertical 4-pin through-hole packages

Substitute parts are grouped into two categories: direct equivalents (RN102-2-02-1M1) that maintain identical electrical specifications with active product status, and similar alternatives (EH28-5.0-02-1M1, B82720A2202N040, B82720K2202N040) that share core inductance and current characteristics but may differ in frequency rating, DCR, or physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

RN102-2-02-1M1 is the primary direct equivalent. This Schaffner EMC Inc. part maintains identical inductance (1.1 mH @ 10 kHz), current rating (2A), and DC resistance (70mOhm) specifications. It features active product status, higher AC voltage rating (300V vs. 250V), and expanded approval certifications (ENEC, UR, VDE). Operating temperature range is reduced to -40°C to 100°C. Packaging is tube format with ROHS3 compliance.

B82720A2202N040 and B82720K2202N040 are EPCOS - TDK Electronics alternatives that maintain core electrical parameters: 1.1 mH @ 10 kHz inductance, 2A current rating, and 250V AC voltage. Both feature active product status, ROHS3 compliance, and UR/VDE/ENEC certifications. DCR is slightly lower at 65mOhm. B82720A2202N040 uses horizontal 4-pin configuration with dimensions 0.559" x 0.559" x 0.380" height. B82720K2202N040 uses vertical 4-pin configuration with different footprint dimensions (0.512" x 0.374" x 0.551" height), requiring PCB layout verification.

EH28-5.0-02-1M1 is a higher-current alternative (5A rating) with lower DCR (27mOhm) and different frequency rating (1.1 mH @ 400 Hz). Physical dimensions are significantly larger (28.00mm x 28.00mm x 23.90mm). This part is suitable only when higher current capacity and lower resistance are design requirements, as it does not maintain identical electrical characteristics at the specified 10 kHz frequency.

Frequently Asked Questions (FAQ)

Q: Can RN102-2-02-1M1 be used as a direct replacement for RN102-2-02?

A: Yes. RN102-2-02-1M1 maintains identical inductance (1.1 mH @ 10 kHz), current rating (2A), and DC resistance (70mOhm) specifications. It is the direct equivalent with active product status. Operating temperature range is -40°C to 100°C versus the original -40°C to 125°C; verify this meets application requirements.

Q: What are the differences between B82720A2202N040 and B82720K2202N040?

A: Both parts share identical electrical specifications (1.1 mH @ 10 kHz, 2A, 65mOhm DCR). The primary difference is package orientation: B82720A2202N040 is horizontal configuration (0.559" x 0.559" x 0.380" height), while B82720K2202N040 is vertical configuration (0.512" x 0.374" x 0.551" height). PCB layout compatibility must be verified before selection.

Q: When should EH28-5.0-02-1M1 be considered?

A: EH28-5.0-02-1M1 is applicable only when design requirements include higher current capacity (5A vs. 2A) and lower DC resistance (27mOhm vs. 70mOhm). The inductance frequency rating differs (1.1 mH @ 400 Hz vs. 10 kHz), and physical dimensions are significantly larger. This part is not a direct substitute for standard 2A applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (RN102-2-02-1M1, EH28-5.0-02-1M1, B82720A2202N040, B82720K2202N040) are ROHS3 compliant. The original RN102-2-02 is RoHS compliant.

Q: What certifications should be verified for regulatory compliance?

A: RN102-2-02-1M1, B82720A2202N040, and B82720K2202N040 carry ENEC, UR, and VDE certifications. EH28-5.0-02-1M1 does not list approval agencies. Verify that selected substitute parts meet application-specific regulatory requirements.

Q: Can substitute parts be mixed in the same design?

A: No. Maintain consistent part selection within a single design to ensure uniform electrical performance and thermal characteristics across all common mode choke installations.