PM32-331M-RC Equivalent & Substitute Parts

Part Overview

The PM32-331M-RC is a 330 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 130 mA continuous current with a maximum DC resistance of 10 Ohm. This surface mount component operates across the temperature range of -40°C to 125°C and is classified as Active product status. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the critical performance parameters that define this inductor category.

Substiute Parts

PM32-331M-RC

Bourns Inc.In Stock: 953PM32-331M-RC Datasheet

Current PartRFQ

SDR0302-331KL

Bourns Inc.In Stock: 6518SDR0302-331KL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM32-331M-RC is determined by strict equivalence across the following critical parameters:

• Inductance value: 330 µH
• Current rating: 130 mA minimum
• DC resistance: 10 Ohm maximum
• Saturation current: 150 mA minimum
• Core type: Ferrite, unshielded drum core
• Mounting: Surface mount, nonstandard package
• Physical dimensions: 3.00mm x 2.80mm x 2.80mm
• Operating temperature range: -40°C to 125°C
• Self resonant frequency: 6 MHz

The SDR0302-331KL meets all substitution criteria. Tolerance differences (±20% vs ±10%) do not preclude substitution when the application circuit design accommodates the specified tolerance band of the substitute part.

Parameter Comparison

Engineering Selection Recommendations

Both PM32-331M-RC and SDR0302-331KL are Active status products manufactured by Bourns Inc. and maintain full compliance with ROHS3, REACH, and MSL 1 requirements. The primary distinction between these parts is packaging format: PM32-331M-RC is supplied in Tape & Reel (TR) configuration, while SDR0302-331KL is supplied in Cut Tape (CT) & Digi-Reel® format. Selection between these parts should be based on procurement and assembly process requirements rather than electrical or thermal performance characteristics. Both parts are suitable for applications requiring 330 µH inductance at 130 mA continuous current within the specified temperature operating range.

Frequently Asked Questions (FAQ)

Q: Can SDR0302-331KL replace PM32-331M-RC in my circuit design?

A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters: inductance, current rating, DC resistance, saturation current, core material, operating temperature range, and physical dimensions. The tolerance difference (±10% vs ±20%) represents an improvement in the substitute part.

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

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on a reel, suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging provides components on tape segments or alternative reel formats, typically for lower-volume or mixed-component assembly processes. Electrical performance is identical.

Q: Are there any thermal or frequency performance differences?

A: No. Both parts operate identically across the -40°C to 125°C temperature range, maintain Q factor of 40 at 796 kHz, and exhibit the same 6 MHz self resonant frequency.

Q: Do both parts meet the same compliance standards?

A: Yes. Both PM32-331M-RC and SDR0302-331KL are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which part should I select for new designs?

A: Selection depends on your procurement and assembly infrastructure. If your production line uses automated tape-fed equipment, PM32-331M-RC (Tape & Reel) is appropriate. If your assembly process uses cut tape or alternative feeding methods, SDR0302-331KL is appropriate. Both are Active status products suitable for new designs.