API Delevan 3483-3R3M Equivalent & Substitute Parts

Part Overview

The API Delevan 3483-3R3M is a 3.3 µH unshielded drum core wirewound inductor rated for 2.08 A continuous current with a maximum DC resistance of 41 mOhm. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. The part operates across a temperature range of -20°C to 80°C and is mounted as a surface mount device in a nonstandard package configuration.

Due to its obsolete status, sourcing replacement units from the original manufacturer is no longer viable. Active substitute parts must maintain electrical performance within the specified inductance, current rating, and resistance parameters while meeting modern compliance requirements.

Substiute Parts

3483-3R3M

API Delevan Inc.In Stock: 11773483-3R3M Datasheet

Current PartRFQ

SDR0603-3R3ML

Bourns Inc.In Stock: 6606SDR0603-3R3ML Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3483-3R3M are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine valid substitution:

Critical Electrical Parameters:

• Inductance value of 3.3 µH with ±20% tolerance
• Current rating equal to or greater than 2.08 A
• DC resistance not exceeding 41 mOhm maximum
• Ferrite core material for equivalent magnetic characteristics
• Unshielded configuration to maintain EMI profile

Critical Mechanical Parameters:

• Surface mount package configuration
• Nonstandard package dimensions compatible with PCB layout
• Moisture sensitivity level of 1 or better

Compliance Considerations:

• Active product status for ongoing availability
• RoHS3 compliance preferred for modern applications
• REACH unaffected status maintained

The Bourns SDR0603-3R3ML meets all critical electrical parameters while exceeding current rating specifications and offering improved temperature range coverage and active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Bourns SDR0603-3R3ML

The Bourns SDR0603-3R3ML is the qualified substitute for the obsolete API Delevan 3483-3R3M based on the following engineering criteria:

Electrical Compatibility: The SDR0603-3R3ML maintains identical inductance (3.3 µH) and tolerance (±20%) specifications. The current rating of 2.2 A exceeds the original 2.08 A requirement, providing operational margin. The maximum DC resistance of 50 mOhm is within acceptable tolerance relative to the original 41 mOhm specification, with the 9 mOhm difference representing acceptable performance variation for this component class.

Compliance and Availability: The substitute part carries active product status, ensuring long-term availability and supply chain reliability. RoHS3 compliance satisfies modern regulatory requirements, whereas the original part is non-compliant. Both parts maintain REACH unaffected status and identical moisture sensitivity levels.

Thermal Performance: The extended operating temperature range of -40°C to 125°C provides superior thermal coverage compared to the original -20°C to 80°C specification, enabling deployment in broader environmental conditions.

Physical Considerations: The substitute features a smaller footprint (5.80mm x 5.80mm versus 7.30mm x 7.30mm), which may require PCB layout verification. The height difference of 0.40mm (3.90mm versus 3.50mm) must be confirmed against clearance constraints in the target application.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR0603-3R3ML be used as a direct replacement for the API Delevan 3483-3R3M?

A: The SDR0603-3R3ML is electrically compatible as a substitute. Verification of PCB layout compatibility is required due to the smaller footprint (5.80mm x 5.80mm versus 7.30mm x 7.30mm) and slightly increased height (3.90mm versus 3.50mm). Mechanical fit must be confirmed before implementation.

Q: What is the significance of the DC resistance difference between the two parts?

A: The original part specifies 41 mOhm maximum DC resistance, while the substitute specifies 50 mOhm maximum. This 9 mOhm difference represents approximately 22% variation. For applications where DC resistance is a critical design parameter, thermal dissipation calculations should be re-evaluated using the higher resistance value.

Q: Does the substitute part meet modern compliance standards?

A: Yes. The Bourns SDR0603-3R3ML is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements. The original API Delevan part is RoHS non-compliant, making the substitute preferable for new designs and regulated applications.

Q: Are there any temperature range considerations for substitution?

A: The substitute operates across -40°C to 125°C, compared to the original -20°C to 80°C range. This extended range is advantageous for applications requiring broader thermal performance. No derating is necessary if the original application operated within -20°C to 80°C.

Q: What packaging format is the substitute supplied in?

A: The Bourns SDR0603-3R3ML is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. Verify that your procurement and assembly infrastructure supports this packaging standard.

Q: How do the electrical performance characteristics compare at operating frequency?

A: The original part was tested at 100 kHz inductance frequency, while the substitute was tested at 1 kHz. The substitute provides additional performance data including Q factor (21 @ 7.96MHz) and self-resonant frequency (68MHz), enabling more detailed circuit analysis if required.