RN114-1.2-02 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The RN114-1.2-02 is a 10 mH, 2-line common mode choke manufactured by Schaffner EMC Inc., designed for power line filtering applications in through-hole configurations. This part is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and production continuity. The component operates at 1.2A typical current with 250V AC rating and meets UR and VDE approval standards.

Substiute Parts

RN114-1.2-02

Schaffner EMC Inc.In Stock: 1131RN114-1.2-02 Datasheet

Current PartRFQ

RN114-1.2-02-10M

Schaffner EMC Inc.In Stock: 1507RN114-1.2-02-10M Datasheet

DirectRFQ

B82733F2142B001

EPCOS - TDK ElectronicsIn Stock: 2121B82733F2142B001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN114-1.2-02 is determined by the following critical parameters:

Direct Substitutes must maintain:

• 2-line common mode choke configuration
• Through-hole mounting with horizontal, 4 PC pin package
• Physical dimensions compatible with 22.50mm L x 21.50mm W footprint
• Current rating ≥ 1.2A
• DC resistance ≤ 200 mOhm (Typ)
• AC voltage rating ≥ 250V
• Operating temperature range encompassing -40°C to 125°C

Similar Substitutes may deviate in inductance value, frequency rating, or DC resistance within acceptable design margins, provided the component maintains the same mounting type, package configuration, and physical footprint compatibility.

Parameter Comparison

Engineering Selection Recommendations

RN114-1.2-02-10M (Direct Substitute)

This part is the primary substitute for the obsolete RN114-1.2-02. It maintains identical physical dimensions, mounting configuration, and current rating. The inductance measurement frequency differs (10 kHz vs. 1 kHz), but the inductance value remains 10 mH. DC resistance is marginally lower at 195 mOhm, and AC voltage rating is increased to 300V. The part holds Active product status with ROHS3 compliance and expanded approval certifications (ENEC, UR, VDE). Operating temperature range is reduced to -40°C ~ 100°C, which may require verification for applications requiring 125°C operation.

B82733F2142B001 (Similar Substitute)

This EPCOS - TDK Electronics component provides an alternative when RN114-1.2-02-10M is unavailable. It maintains 2-line configuration, through-hole mounting, and horizontal 4 PC pin package. Current rating is increased to 1.4A, and AC voltage rating is 300V. However, inductance is elevated to 27 mH, and DC resistance is significantly higher at 440 mOhm. Physical dimensions are larger (26.50mm L x 24.80mm W x 14.00mm H), requiring PCB layout verification. Operating temperature range matches the original part (-40°C ~ 125°C). This substitute is suitable only when circuit design accommodates the higher inductance and resistance values.

Frequently Asked Questions (FAQ)

Q: Can RN114-1.2-02-10M be used as a direct replacement for RN114-1.2-02?

A: Yes. Both parts share identical physical dimensions, mounting type, package configuration, and current rating. The inductance value is 10 mH in both cases. The primary difference is the measurement frequency (1 kHz vs. 10 kHz) and a marginal reduction in DC resistance. Operating temperature range is reduced from 125°C to 100°C maximum, which must be evaluated for your application.

Q: What are the limitations of using B82733F2142B001 as a substitute?

A: The B82733F2142B001 has three significant deviations: inductance is 27 mH (not 10 mH), DC resistance is 440 mOhm (more than double the original), and physical dimensions are larger. These differences affect circuit performance and require PCB layout modification. Use this part only when circuit design can accommodate higher inductance and resistance values.

Q: Are all substitute parts RoHS compliant?

A: Yes. The main part is RoHS Compliant. Both substitute parts are ROHS3 Compliant, which represents a more recent compliance standard and is backward compatible with RoHS requirements.

Q: Do the substitute parts have the same approval certifications?

A: The main part carries UR and VDE approvals. RN114-1.2-02-10M adds ENEC certification (ENEC, UR, VDE). B82733F2142B001 also carries ENEC, UR, and VDE certifications. All parts meet the same regulatory standards for power line filtering applications.

Q: What is the impact of different inductance measurement frequencies?

A: Inductance values are frequency-dependent. The main part specifies 10 mH @ 1 kHz, while RN114-1.2-02-10M specifies 10 mH @ 10 kHz. Both maintain the same 10 mH inductance value at their respective measurement frequencies. The frequency difference reflects measurement methodology and does not indicate a functional difference in the component.

Q: Can I use B82733F2142B001 in a space-constrained PCB layout?

A: No. The B82733F2142B001 has larger physical dimensions (26.50mm L x 24.80mm W x 14.00mm H) compared to the original part (22.50mm L x 21.50mm W x 14.60mm H). PCB layout modification is required if this substitute is selected.