4501-128M Equivalent & Substitute Parts

Part Overview

The 4501-128M is a 100 µH shielded toroidal inductor manufactured by API Delevan Inc., designed for surface mount applications with a rated current of 650 mA and maximum DC resistance of 400 mOhm. This ferrite-core component operates across the temperature range of -55°C to 125°C and is supplied in Tape & Reel packaging. The part is currently active in production. Substitute parts may be required due to packaging format availability, compliance requirements, or inventory constraints in specific supply channels.

Substiute Parts

4501-128M

API Delevan Inc.In Stock: 8074501-128M Datasheet

Current PartRFQ

4501R-128M

API Delevan Inc.In Stock: 16804501R-128M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4501-128M is based on electrical and mechanical parameter equivalence within the 4501 series family from API Delevan Inc. The primary substitute, 4501R-128M, maintains identical electrical specifications including inductance value of 100 µH at ±20% tolerance, current rating of 650 mA, and DC resistance maximum of 400 mOhm. Both parts feature ferrite toroidal cores with shielding, identical physical dimensions (0.360" x 0.360" x 0.210" maximum height), and equivalent operating temperature ranges of -55°C to 125°C.

The key parameters determining substitution eligibility are:

• Inductance value and tolerance
• Current rating and saturation current
• DC resistance specification
• Core material and shielding configuration
• Physical dimensions and mounting compatibility
• Operating temperature range
• Inductance test frequency

The 4501R-128M differs from the 4501-128M only in packaging format (Cut Tape versus Tape & Reel) and RoHS compliance status, with no impact on electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

The 4501R-128M serves as a direct electrical and mechanical substitute for the 4501-128M. Both components are active products from API Delevan Inc. with identical electrical performance specifications and physical dimensions.

Selection between these parts should be based on:

Packaging Requirements: The 4501-128M is supplied in Tape & Reel format suitable for automated assembly processes, while the 4501R-128M is supplied in Cut Tape format. Choose based on your assembly equipment and process requirements.

Compliance Requirements: The 4501R-128M is ROHS3 compliant, whereas the 4501-128M is RoHS non-compliant. If your application or supply chain requires RoHS compliance, the 4501R-128M is the appropriate selection. Both parts are REACH Unaffected and classified as EAR99 for export control purposes.

Inventory Availability: The 4501R-128M has higher current inventory (1570 Pcs) compared to the 4501-128M (756 Pcs), which may influence supply chain decisions.

Both parts maintain identical electrical characteristics, thermal performance, and mechanical compatibility with surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 4501R-128M be used as a direct replacement for the 4501-128M in existing designs?

A: Yes. The 4501R-128M is electrically and mechanically identical to the 4501-128M. All electrical parameters including inductance, current rating, DC resistance, and operating temperature range are equivalent. Physical dimensions and mounting compatibility are identical. The only differences are packaging format and RoHS compliance status.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on a continuous reel suitable for high-speed automated pick-and-place assembly equipment. Cut Tape (CT) packaging supplies components on tape segments cut to specific lengths, typically used for lower-volume assembly or manual handling. Both formats contain the same component; the difference is in supply format only.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance refers to the absence of restricted substances in the component materials and manufacturing process. It does not affect the electrical or mechanical performance of the inductor. The 4501R-128M achieves ROHS3 compliance while maintaining identical electrical specifications to the non-compliant 4501-128M.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the 4501-128M and 4501R-128M operate across the identical temperature range of -55°C to 125°C with no performance degradation within this range.

Q: What is the Moisture Sensitivity Level (MSL) rating, and does it differ between these parts?

A: Both parts have an MSL rating of 3 with a floor life of 168 hours. This indicates the maximum time the component can be exposed to ambient conditions (typically 30°C, 60% relative humidity) after packaging before soldering. The rating is identical for both parts.

Q: Can these inductors be used interchangeably in automated assembly lines?

A: The 4501-128M in Tape & Reel format is optimized for automated assembly. The 4501R-128M in Cut Tape format may require different handling equipment. Verify your assembly equipment specifications before substituting. Electrically and mechanically, they are fully interchangeable.

Q: What does the ±20% inductance tolerance mean for circuit design?

A: The inductance value of 100 µH can vary between 80 µH and 120 µH across the production range. Circuit designs must account for this tolerance range. Both substitute parts share this identical tolerance specification.