RN202-2-02 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The RN202-2-02 is a 1.1 mH, 2-line common mode choke manufactured by Schaffner EMC Inc., designed for power line filtering applications in through-hole mounting configurations. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and legacy system support.

Substiute Parts

RN202-2-02

Schaffner EMC Inc.In Stock: 770RN202-2-02 Datasheet

Current PartRFQ

RN202-2-02-1M1

Schaffner EMC Inc.In Stock: 10332RN202-2-02-1M1 Datasheet

DirectRFQ

B82720K2202N040

EPCOS - TDK ElectronicsIn Stock: 990B82720K2202N040 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN202-2-02 is determined by the following critical parameters:

• Inductance Value: 1.1 mH (measurement frequency may vary: 1 kHz or 10 kHz)
• Number of Lines: 2-line configuration
• Current Rating: 2A minimum
• DC Resistance: 70 mOhm or lower
• Mounting Type: Through Hole
• Package Configuration: Vertical, 4 PC Pin
• Physical Footprint: Compatible dimensions for PCB layout
• Voltage Rating - AC: 250V minimum
• Operating Temperature: -40°C to 125°C minimum range
• Regulatory Compliance: UR, VDE approval

Two substitute parts meet these criteria:

1. RN202-2-02-1M1 (Schaffner EMC Inc.) — Direct manufacturer equivalent with active product status
2. B82720K2202N040 (EPCOS - TDK Electronics) — Cross-manufacturer alternative with similar electrical characteristics

Parameter Comparison

Engineering Selection Recommendations

RN202-2-02-1M1 is the primary substitute for the obsolete RN202-2-02. Both components are manufactured by Schaffner EMC Inc., share identical physical dimensions and pin configuration, and meet the same core electrical specifications. The RN202-2-02-1M1 carries active product status with ROHS3 compliance and expanded regulatory approvals (ENEC, UR, VDE). The inductance measurement frequency differs (10 kHz vs. 1 kHz), and the maximum operating temperature is reduced to 100°C; however, these parameters remain within acceptable substitution tolerances for standard power line filtering applications.

B82720K2202N040 serves as a cross-manufacturer alternative when RN202-2-02-1M1 availability is constrained. This EPCOS - TDK Electronics component maintains the 1.1 mH inductance, 2A current rating, and through-hole mounting configuration. The physical footprint is smaller (13.00mm x 9.50mm vs. 18.20mm x 8.80mm), which may require PCB layout verification. DC resistance is superior at 65 mOhm. Operating temperature range matches the original specification (-40°C to 125°C). ROHS3 compliance and UR, VDE approvals are confirmed.

Selection between these substitutes depends on PCB layout constraints and supply availability. For designs with strict dimensional requirements, RN202-2-02-1M1 is preferred. For applications where reduced footprint is beneficial, B82720K2202N040 is acceptable provided PCB layout accommodates the dimensional change.

Frequently Asked Questions (FAQ)

Q: Can RN202-2-02-1M1 directly replace RN202-2-02 without PCB modifications?

A: Yes. Both components share identical physical dimensions (18.20mm x 8.80mm x 13.80mm), pin configuration (Vertical, 4 PC Pin), and electrical specifications within standard tolerances. No PCB layout changes are required.

Q: What is the significance of the inductance measurement frequency difference (1 kHz vs. 10 kHz)?

A: Inductance values are frequency-dependent. The RN202-2-02-1M1 specifies 1.1 mH @ 10 kHz, while the original specifies 1.1 mH @ 1 kHz. Both maintain the 1.1 mH nominal value across the operating frequency range for power line filtering applications. This difference does not affect substitution eligibility.

Q: Can B82720K2202N040 be used if PCB space is limited?

A: B82720K2202N040 has a smaller footprint (13.00mm x 9.50mm vs. 18.20mm x 8.80mm). PCB layout must be verified to confirm the component fits within the available space and that trace routing remains compliant with design rules. Height is comparable (14.00mm vs. 13.80mm).

Q: Are there temperature range limitations when substituting?

A: RN202-2-02-1M1 operates to 100°C maximum, compared to 125°C for the original and B82720K2202N040. Applications requiring operation above 100°C must use B82720K2202N040 or retain the original part if available. Standard industrial power line filtering typically operates within the 100°C limit.

Q: What compliance certifications apply to each substitute?

A: RN202-2-02-1M1 carries ENEC, UR, and VDE approvals with ROHS3 compliance. B82720K2202N040 carries ENEC, UR, and VDE approvals with ROHS3 compliance. Both meet the regulatory requirements of the original RN202-2-02 (UR, VDE, RoHS Compliant).

Q: Is DC resistance a critical factor in substitution?

A: DC resistance affects power dissipation and thermal performance. RN202-2-02-1M1 matches the original at 70 mOhm (Typ). B82720K2202N040 offers lower resistance at 65 mOhm (Typ), which reduces heat generation. Both values are acceptable for 2A current rating applications.

Q: Can these parts be used interchangeably in existing designs?

A: RN202-2-02-1M1 is a direct substitute requiring no design changes. B82720K2202N040 requires verification of PCB layout compatibility due to dimensional differences. Electrical performance is equivalent for both in standard power line filtering circuits.