PM628S-7R3-RC Equivalent & Substitute Parts

Part Overview

The PM628S-7R3-RC is a 7.3 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 2.2 A continuous current with a maximum DC resistance of 52 mOhm. This surface mount component is designed for applications requiring controlled inductance with minimal DC losses in compact form factors. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when electrical and mechanical parameters remain within the specified tolerances and operational ranges.

Substiute Parts

PM628S-7R3-RC

Bourns Inc.In Stock: 939PM628S-7R3-RC Datasheet

Current PartRFQ

SRR6028-7R3Y

Bourns Inc.In Stock: 1512SRR6028-7R3Y Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM628S-7R3-RC is determined by strict equivalence across the following critical parameters:

• Inductance value: 7.3 µH with ±30% tolerance
• Current rating: 2.2 A minimum continuous current capacity
• Saturation current (Isat): 1.85 A minimum
• DC resistance: 52 mOhm maximum
• Core type: Ferrite shielded drum core
• Mounting: Surface mount, nonstandard package
• Physical dimensions: 6.80 mm × 6.80 mm footprint with 3.00 mm maximum seated height
• Operating temperature: -40°C to 125°C range
• Compliance: RoHS3 and REACH requirements

The SRR6028-7R3Y meets all specified electrical and mechanical parameters, making it a direct functional equivalent for circuit applications requiring the PM628S-7R3-RC.

Parameter Comparison

Engineering Selection Recommendations

Both the PM628S-7R3-RC and SRR6028-7R3Y are active production components from Bourns Inc. with full RoHS3 compliance and REACH unaffected status. Selection between these parts may be based on:

• Inventory availability: PM628S-7R3-RC (927 pcs) versus SRR6028-7R3Y (1502 pcs)
• Self-resonant frequency characteristics: PM628S-7R3-RC operates at 38 MHz while SRR6028-7R3Y operates at 30 MHz
• Supply chain considerations and lead time requirements
• Packaging and logistics preferences (both supplied in Tape & Reel format)

Both parts satisfy identical electrical specifications and thermal operating ranges, making either suitable for direct substitution in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the SRR6028-7R3Y replace the PM628S-7R3-RC in existing designs?

A: Yes. Both parts share identical inductance (7.3 µH), current ratings (2.2 A), DC resistance (52 mOhm max), core material (ferrite shielded), operating temperature range (-40°C to 125°C), and physical dimensions (6.80 mm × 6.80 mm × 3.00 mm). No circuit modifications are required.

Q: What is the difference between these two parts?

A: The primary difference is the self-resonant frequency: PM628S-7R3-RC operates at 38 MHz while SRR6028-7R3Y operates at 30 MHz. Both remain within acceptable operational ranges for the specified inductance and current ratings. Inventory levels also differ between the two part numbers.

Q: Are both parts RoHS3 compliant?

A: Yes. Both PM628S-7R3-RC and SRR6028-7R3Y are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity rating) and REACH unaffected status.

Q: Do these parts require different PCB footprints?

A: No. Both parts use identical surface mount package dimensions of 6.80 mm × 6.80 mm with a maximum seated height of 3.00 mm, allowing direct PCB footprint compatibility.

Q: What is the inductance tolerance for these parts?

A: Both parts have an inductance tolerance of ±30%, meaning the actual inductance value may range from 5.11 µH to 9.49 µH while remaining within specification.