RN112-1.2-02 Equivalent & Substitute Parts

Part Overview

The RN112-1.2-02 is a Common Mode Choke (CMC) manufactured by Schaffner EMC Inc., designed for power line filtering applications. This component features a 6.8 mH inductance rating at 1 kHz with a maximum current capacity of 1.2A and is configured as a 2-line through-hole device. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

RN112-1.2-02

Schaffner EMC Inc.In Stock: 1978RN112-1.2-02 Datasheet

Current PartRFQ

B82721A2122N020

EPCOS - TDK ElectronicsIn Stock: 1497B82721A2122N020 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN112-1.2-02 is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration
• Inductance Value: 6.8 mH nominal
• Current Rating: 1.2A minimum
• Mounting Type: Through Hole required
• Package Configuration: Horizontal, 4 PC Pin
• Voltage Rating - AC: 250V minimum
• Operating Temperature Range: -40°C ~ 125°C minimum
• Approval Agencies: UR and VDE certifications required

The B82721A2122N020 from EPCOS - TDK Electronics meets these substitution criteria. While minor variations exist in inductance measurement frequency (10 kHz vs. 1 kHz) and DCR specification (280 mOhm vs. 245 mOhm), the component maintains functional equivalence within the power line filtering application scope.

Parameter Comparison

Engineering Selection Recommendations

The B82721A2122N020 is the qualified substitute for the obsolete RN112-1.2-02. Selection rationale is based on the following factors:

Product Status: The B82721A2122N020 maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete RN112-1.2-02.

Regulatory Compliance: Both components satisfy UR and VDE approval requirements. The B82721A2122N020 additionally carries ENEC certification, providing expanded regulatory coverage. Both components meet RoHS requirements (RoHS Compliant and ROHS3 Compliant respectively).

Electrical Parameters: Core electrical specifications align across both components: 2-line configuration, 6.8 mH inductance, 1.2A current rating, and 250V AC voltage rating. The DCR differential (280 mOhm vs. 245 mOhm) and inductance measurement frequency variance (10 kHz vs. 1 kHz) fall within acceptable tolerances for power line filtering applications.

Physical Compatibility: Both components utilize identical through-hole mounting with horizontal, 4 PC pin configuration. Dimensional variations are minimal and do not impact PCB layout or mechanical assembly.

Frequently Asked Questions (FAQ)

Q: Can the B82721A2122N020 directly replace the RN112-1.2-02 in existing designs?

A: Yes. Both components share identical electrical ratings (6.8 mH, 1.2A, 250V AC), mounting type (through-hole), and package configuration (horizontal, 4 PC pin). Physical dimensions are comparable, and regulatory certifications are equivalent or superior.

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

A: Inductance values are frequency-dependent. The 6.8 mH specification remains consistent across both measurement frequencies for this component class. The measurement frequency difference does not affect functional equivalence in power line filtering applications.

Q: Does the higher DCR value (280 mOhm) of the B82721A2122N020 impact performance?

A: The DCR differential of 35 mOhm represents a 14% increase. For 1.2A operation, this results in approximately 42 mW additional power dissipation. This variance is within acceptable limits for power line filtering and does not compromise functional performance.

Q: Are there packaging differences between the two components?

A: The RN112-1.2-02 is supplied in standard packaging, while the B82721A2122N020 is supplied in trays. Both maintain identical component specifications and through-hole configuration. Tray packaging provides improved handling and automated assembly compatibility.

Q: What certifications does each component carry?

A: The RN112-1.2-02 carries UR and VDE approvals. The B82721A2122N020 carries ENEC, UR, and VDE approvals, providing additional regulatory coverage. Both meet RoHS compliance requirements.