PM528S-330-RC Equivalent & Substitute Parts

Part Overview

The PM528S-330-RC is a 33 µH shielded drum core wirewound inductor manufactured by Bourns Inc., designed for surface mount applications requiring moderate current handling and low DC resistance. This component is classified as Active product status and is ROHS3 compliant. Substitute parts become necessary when the primary part number experiences supply constraints, extended lead times, or when alternative packaging formats better suit manufacturing requirements.

Substiute Parts

PM528S-330-RC

Bourns Inc.In Stock: 1099PM528S-330-RC Datasheet

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SRR5028-330Y

Bourns Inc.In Stock: 7193SRR5028-330Y Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The SRR5028-330Y qualifies as a direct substitute for the PM528S-330-RC based on the following critical parameters:

• Identical inductance value: 33 µH with ±30% tolerance
• Matching current rating: 900 mA continuous
• Equivalent saturation current: 780 mA
• Identical DC resistance specification: 190 mOhm Max
• Same shielding configuration: Shielded drum core
• Identical core material: Ferrite
• Matching operating temperature range: -40°C ~ 125°C
• Identical physical dimensions: 0.228" L x 0.228" W (5.80mm x 5.80mm)
• Matching height: 0.118" (3.00mm) seated maximum
• Equivalent compliance: ROHS3 compliant, MSL 1

The primary difference between these parts is packaging format: PM528S-330-RC is supplied in Tape & Reel (TR) format, while SRR5028-330Y is available in Cut Tape (CT) & Digi-Reel® format.

Parameter Comparison

Engineering Selection Recommendations

Both PM528S-330-RC and SRR5028-330Y are Active status components manufactured by Bourns Inc. with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on packaging and supply chain requirements:

• PM528S-330-RC: Select when Tape & Reel (TR) packaging is required for automated assembly processes
• SRR5028-330Y: Select when Cut Tape (CT) & Digi-Reel® packaging is preferred or when TR format availability is constrained

Both parts meet identical electrical and mechanical specifications, ensuring functional interchangeability in circuit applications. Compliance certifications are equivalent across both options.

Frequently Asked Questions (FAQ)

Q: Can SRR5028-330Y be used as a direct replacement for PM528S-330-RC?

A: Yes. Both parts are electrically and mechanically identical with matching inductance (33 µH), current ratings (900 mA), DC resistance (190 mOhm Max), and physical dimensions (5.80mm x 5.80mm x 3.00mm). The only difference is packaging format.

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

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, optimized for high-volume automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging provides components on tape segments or alternative reel formats, suitable for lower-volume production or mixed-component assembly runs.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical certifications: ROHS3 compliant, REACH unaffected, MSL 1 (Unlimited), and EAR99 classification.

Q: Will substituting these parts require PCB layout changes?

A: No. Both parts have identical physical dimensions and mounting footprints, requiring no PCB modifications.

Q: What is the saturation current specification and why is it important?

A: Saturation current (Isat) is 780 mA for both parts. This represents the current level at which the inductor begins to lose its inductance value due to core saturation. Circuit designs must ensure operating current remains below this threshold to maintain specified inductance performance.

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

A: Yes. Both PM528S-330-RC and SRR5028-330Y operate across -40°C to 125°C, providing identical thermal performance specifications.