RN222-4-02 Equivalent & Substitute Parts

Part Overview

The RN222-4-02 is a 3.3 mH common mode choke (CMC) designed for two-line power line filtering applications. Manufactured by Schaffner EMC Inc., this through-hole component is rated for 4A typical current with 48 mOhm DC resistance and operates across -40°C to 125°C. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Substiute Parts

RN222-4-02

Schaffner EMC Inc.In Stock: 894RN222-4-02 Datasheet

Current PartRFQ

RN222-4-02-3M3

Schaffner EMC Inc.In Stock: 1987RN222-4-02-3M3 Datasheet

DirectRFQ

B82724J2402N001

EPCOS - TDK ElectronicsIn Stock: 2831B82724J2402N001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN222-4-02 is determined by the following critical parameters:

• Inductance Value: 3.3 mH (measurement frequency may vary: 1 kHz or 10 kHz)
• Number of Lines: 2-line configuration
• Current Rating: 4A or higher
• Mounting Type: Through Hole
• Package Configuration: Vertical, 4 PC Pin
• Voltage Rating - AC: 250V minimum
• Operating Temperature Range: Must support -40°C to 125°C or equivalent
• Regulatory Compliance: UR and VDE certifications

Two substitute parts meet these criteria:

1. RN222-4-02-3M3 (Schaffner EMC Inc.) – Direct manufacturer alternative with active product status
2. B82724J2402N001 (EPCOS - TDK Electronics) – Cross-manufacturer equivalent with similar electrical characteristics

Parameter Comparison

Engineering Selection Recommendations

RN222-4-02-3M3 is the preferred direct substitute. It is manufactured by the same supplier as the original part, maintains identical physical dimensions and pin configuration, and carries active product status with enhanced regulatory certifications (ENEC addition). The inductance measurement frequency differs (10 kHz vs. 1 kHz), but the nominal 3.3 mH value remains constant. DC resistance is marginally lower (46 mOhm vs. 48 mOhm), and AC voltage rating is higher (300V vs. 250V). The operating temperature range is reduced to -40°C to 100°C, which may require evaluation if sustained operation above 100°C is required.

B82724J2402N001 serves as a cross-manufacturer alternative from EPCOS - TDK Electronics. It maintains the same inductance value, current rating, and operating temperature range as the original part. Physical dimensions are slightly larger (31.30 mm L x 18.50 mm W x 33.20 mm H vs. 31.00 mm L x 18.00 mm W x 29.60 mm H), which may impact PCB layout compatibility. DC resistance is higher at 65 mOhm (Typ), representing a 35% increase over the original specification. Both substitute parts carry UR and VDE certifications required for power line filtering applications.

Frequently Asked Questions (FAQ)

Q: Can RN222-4-02-3M3 be used as a direct replacement for RN222-4-02?

A: Yes. Both parts share identical inductance (3.3 mH), current rating (4A), mounting type (through hole), physical dimensions, and pin configuration. The RN222-4-02-3M3 is the manufacturer's active equivalent and carries enhanced certifications. The operating temperature upper limit is reduced from 125°C to 100°C; verify this meets your application requirements.

Q: What are the key differences between RN222-4-02-3M3 and B82724J2402N001?

A: Both maintain 3.3 mH inductance and 4A current rating. RN222-4-02-3M3 is from the original manufacturer (Schaffner) with identical footprint. B82724J2402N001 is from EPCOS - TDK Electronics with slightly larger physical dimensions (3.2 mm taller) and higher DC resistance (65 mOhm vs. 46 mOhm). The RN222-4-02-3M3 is preferred for direct replacement; B82724J2402N001 is suitable when footprint variation is acceptable.

Q: Will the higher DC resistance of B82724J2402N001 affect circuit performance?

A: The B82724J2402N001 exhibits 65 mOhm DC resistance compared to 48 mOhm for the original part, representing a 35% increase. This increases power dissipation and voltage drop across the component. Evaluate thermal and voltage drop impact in your specific application before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. The original RN222-4-02 is RoHS Compliant. Both substitutes (RN222-4-02-3M3 and B82724J2402N001) are ROHS3 Compliant, meeting current RoHS 3 requirements.

Q: Do the substitute parts carry the same regulatory certifications?

A: The original RN222-4-02 carries UR and VDE certifications. RN222-4-02-3M3 adds ENEC certification (ENEC, UR, VDE). B82724J2402N001 also carries ENEC, UR, and VDE certifications. All parts meet power line filtering regulatory requirements.

Q: Can B82724J2402N001 be used in applications requiring operation above 100°C?

A: Yes. B82724J2402N001 supports the full operating temperature range of -40°C to 125°C, matching the original RN222-4-02. RN222-4-02-3M3 is limited to -40°C to 100°C. For applications requiring sustained operation above 100°C, B82724J2402N001 is the appropriate choice.

Q: Are there packaging differences between the substitutes?

A: RN222-4-02 is supplied in standard packaging (not specified). RN222-4-02-3M3 is supplied in Tube packaging. B82724J2402N001 is supplied in Tray packaging. Verify packaging compatibility with your procurement and assembly processes.