PM638S-180-RC Equivalent & Substitute Parts

Part Overview

The PM638S-180-RC is an 18 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 1.5 A continuous current with a maximum DC resistance of 92 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently active in production. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, packaging format preferences, or supply chain considerations.

Substiute Parts

PM638S-180-RC

Bourns Inc.In Stock: 784PM638S-180-RC Datasheet

Current PartRFQ

SRR6038-180Y

Bourns Inc.In Stock: 2022SRR6038-180Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SRR6038-180Y qualifies as a direct substitute for the PM638S-180-RC based on the following critical parameters:

• Inductance value: 18 µH (identical)
• Inductance tolerance: ±30% (identical)
• Current rating: 1.5 A (identical)
• Saturation current: 1.7 A (identical)
• DC resistance: 92 mOhm Max (identical)
• Core type: Ferrite drum core, shielded (identical)
• Q factor: 8 @ 2.52 MHz (identical)
• Self resonant frequency: 13.8 MHz (identical)
• Operating temperature range: -40°C to 125°C (identical)
• Package dimensions: 6.80 mm x 6.80 mm x 4.00 mm (identical)
• RoHS and compliance status: ROHS3 compliant (identical)

The primary difference between these parts is packaging format: PM638S-180-RC is supplied in Tape & Reel (TR) format, while SRR6038-180Y is supplied in Cut Tape (CT) & Digi-Reel® format. Both parts share the same electrical performance characteristics and physical footprint, making them electrically and mechanically interchangeable.

Parameter Comparison

Engineering Selection Recommendations

Both PM638S-180-RC and SRR6038-180Y are active production components from Bourns Inc. with identical electrical specifications and physical dimensions. Selection between these parts should be based on packaging requirements and supply availability:

• PM638S-180-RC: Select when Tape & Reel (TR) packaging is required for automated assembly processes.
• SRR6038-180Y: Select when Cut Tape (CT) or Digi-Reel® packaging is preferred or when TR format is unavailable.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard manufacturing and storage conditions. The identical electrical performance across all specified parameters confirms direct substitution capability without circuit redesign or performance impact.

Frequently Asked Questions (FAQ)

Q: Can SRR6038-180Y be used as a direct replacement for PM638S-180-RC in production?

A: Yes. Both parts have identical inductance (18 µH), current rating (1.5 A), DC resistance (92 mOhm Max), core material (ferrite), shielding, and physical dimensions (6.80 mm x 6.80 mm x 4.00 mm). The only difference is packaging format (Tape & Reel versus Cut Tape & Digi-Reel®). Electrical performance and PCB footprint compatibility are identical.

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 a reel, 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 manual assembly. Both formats contain the same component with identical specifications.

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

A: No. Both parts operate across -40°C to 125°C, are ROHS3 compliant, and have MSL 1 (Unlimited) moisture sensitivity rating. Compliance and environmental specifications are identical.

Q: Can these inductors be used interchangeably in high-frequency applications?

A: Yes. Both parts have identical Q factor (8 @ 2.52 MHz) and self-resonant frequency (13.8 MHz), confirming equivalent performance in high-frequency circuits. Electrical characteristics are identical across the specified frequency range.

Q: What should be considered when switching between these part numbers?

A: Verify that your assembly process can accommodate the packaging format of the substitute part. If using automated pick-and-place equipment configured for Tape & Reel format, confirm compatibility with Cut Tape & Digi-Reel® format before implementation. Electrical performance requires no circuit modifications.