RN112-1.5-02 Equivalent & Substitute Parts

Part Overview

The RN112-1.5-02 is a 3.3 mH Common Mode Choke (CMC) designed for power line filtering applications. This through-hole mounted component features a 1.5A current rating and is rated for 250V AC operation across a 2-line configuration. The part is classified as Obsolete, making identification of suitable alternatives essential for ongoing system support and new design implementations. Equivalent and substitute parts must maintain electrical compatibility while meeting current regulatory and compliance standards.

Substiute Parts

RN112-1.5-02

Schaffner EMC Inc.In Stock: 1017RN112-1.5-02 Datasheet

Current PartRFQ

RN112-1.5-02-3M3

Schaffner EMC Inc.In Stock: 2242RN112-1.5-02-3M3 Datasheet

DirectRFQ

B82721A2152N001

EPCOS - TDK ElectronicsIn Stock: 3501B82721A2152N001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN112-1.5-02 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Inductance value: 3.3 mH (measurement frequency may vary: 1 kHz or 10 kHz)
• Current rating: minimum 1.5A
• Voltage rating: minimum 250V AC
• Number of lines: 2-line configuration
• DC resistance: acceptable range based on application thermal constraints

Mechanical Compatibility Requirements:

• Mounting type: Through Hole
• Package configuration: Horizontal, 4 PC Pin
• Physical footprint: compatible with 17.70mm x 17.10mm x 12.90mm envelope

Regulatory Compliance:

• RoHS compliance status (RoHS3 preferred for new designs)
• Approval agencies: UR, VDE, ENEC certifications

Two substitute parts meet these criteria and are classified as follows:

Direct Manufacturer Equivalent: RN112-1.5-02-3M3 (Schaffner EMC Inc.) — same manufacturer, same series, Active product status

Cross-Manufacturer Alternative: B82721A2152N001 (EPCOS - TDK Electronics) — different manufacturer, equivalent electrical specifications, Active product status

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

RN112-1.5-02-3M3 is the primary substitute. This part maintains the same manufacturer lineage (Schaffner EMC Inc., RN series) and is classified as Active. It provides improved DC resistance (102 mOhm vs. 135 mOhm), higher voltage rating (300V vs. 250V), and enhanced regulatory compliance (ROHS3 and ENEC certification). The inductance measurement frequency differs (10 kHz vs. 1 kHz), but the 3.3 mH value remains constant. Operating temperature range is reduced to -40°C ~ 100°C; applications requiring operation above 100°C must evaluate thermal performance independently.

For Cross-Manufacturer Substitution:

B82721A2152N001 (EPCOS - TDK Electronics, B82721 series) is a compatible alternative when RN112-1.5-02-3M3 is unavailable. This part meets all electrical requirements with identical inductance (3.3 mH @ 10 kHz) and current rating (1.5A). DC resistance is higher (180 mOhm vs. 135 mOhm), resulting in increased power dissipation; thermal analysis is required for applications with tight thermal budgets. Physical dimensions show minor variation (17.90mm L x 17.30mm W x 12.60mm H vs. 17.70mm x 17.10mm x 12.90mm); PCB layout verification is necessary. Full operating temperature range (-40°C ~ 125°C) matches the original part. ROHS3 compliance and UR/VDE/ENEC certifications are present.

Compliance Considerations:

Both substitutes meet current RoHS3 requirements. The original RN112-1.5-02 carries RoHS Compliant status; new designs should transition to ROHS3-compliant alternatives. All three parts hold UR and VDE certifications; RN112-1.5-02-3M3 and B82721A2152N001 additionally carry ENEC approval.

Frequently Asked Questions (FAQ)

Q: Can RN112-1.5-02-3M3 be used as a direct drop-in replacement for RN112-1.5-02?

A: Yes, with thermal verification. RN112-1.5-02-3M3 maintains identical physical dimensions, mounting configuration, and electrical ratings. The lower DC resistance (102 mOhm vs. 135 mOhm) reduces heat generation. Operating temperature range is reduced to -40°C ~ 100°C; confirm application requirements do not exceed this limit.

Q: What is the difference between inductance measured at 1 kHz versus 10 kHz?

A: Both RN112-1.5-02 and its substitutes specify 3.3 mH inductance value. The measurement frequency reflects the test standard used by each manufacturer. For power line filtering applications, the 3.3 mH value is the controlling specification; frequency-dependent variation is within acceptable tolerances for this component category.

Q: Is B82721A2152N001 suitable for high-temperature applications?

A: B82721A2152N001 supports the full operating range of -40°C ~ 125°C, matching the original RN112-1.5-02. However, its higher DC resistance (180 mOhm) generates more heat than the original part. Thermal modeling is required to confirm safe operation at elevated ambient temperatures or high current conditions.

Q: What are the packaging differences between substitutes?

A: RN112-1.5-02-3M3 is supplied in Tube packaging; B82721A2152N001 is supplied in Tray packaging. Both are through-hole components with identical pin configurations. Packaging selection depends on assembly process requirements and inventory management practices.

Q: Are both substitutes RoHS compliant?

A: Yes. RN112-1.5-02-3M3 and B82721A2152N001 are both ROHS3 Compliant, exceeding the RoHS Compliant status of the original part. New designs should specify ROHS3-compliant alternatives.

Q: What certifications do the substitute parts carry?

A: RN112-1.5-02-3M3 carries ENEC, UR, and VDE certifications. B82721A2152N001 carries ENEC, UR, and VDE certifications. Both meet or exceed the UR and VDE certifications of the original RN112-1.5-02.

Q: Can physical dimension variations affect PCB layout?

A: B82721A2152N001 shows minor dimensional variation (17.90mm L x 17.30mm W x 12.60mm H vs. 17.70mm x 17.10mm x 12.90mm). These differences are within typical manufacturing tolerances for through-hole components. PCB footprint verification is recommended for high-density layouts or applications with tight mechanical constraints.