PM2120-331K Equivalent & Substitute Parts

Part Overview

The PM2120-331K is a 330 µH unshielded toroidal inductor manufactured by Bourns Inc., rated for 3.6 A continuous current with a maximum DC resistance of 100mOhm. This surface mount component is designed for applications requiring fixed inductance in compact form factors. The PM2120-331K is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity.

Substiute Parts

PM2120-331K

Bourns Inc.In Stock: 1137PM2120-331K Datasheet

Current PartRFQ

PM2120-331K-RC

Bourns Inc.In Stock: 975PM2120-331K-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PM2120-331K is determined by strict equivalence across the following electrical and mechanical parameters:

• Inductance value: 330 µH with ±10% tolerance
• Current rating: 3.6 A minimum
• DC resistance: 100mOhm maximum
• Core material: Iron
• Shielding configuration: Unshielded
• Package type: Nonstandard surface mount
• Physical dimensions: 30.50mm × 25.40mm × 19.81mm
• Operating temperature range: -55°C to 105°C

The PM2120-331K-RC meets all these criteria and is classified as a direct manufacturer equivalent within the PM2120 series.

Parameter Comparison

Engineering Selection Recommendations

The PM2120-331K-RC is the direct functional equivalent of the PM2120-331K. Both components share identical electrical specifications, mechanical dimensions, and thermal operating ranges. The primary distinction is product lifecycle status: the PM2120-331K is obsolete while the PM2120-331K-RC maintains active production status.

For new designs or production continuity, the PM2120-331K-RC is the appropriate selection. This substitute provides ROHS3 compliance, addressing regulatory requirements that the original PM2120-331K does not meet. Both components maintain equivalent REACH and ECCN classifications.

Frequently Asked Questions (FAQ)

Q: Can PM2120-331K-RC be used as a direct replacement for PM2120-331K?

A: Yes. Both components are electrically and mechanically identical across all specified parameters: 330 µH inductance, 3.6 A current rating, 100mOhm maximum DC resistance, iron core construction, and identical physical dimensions. The PM2120-331K-RC is the active production equivalent.

Q: What is the difference between these two part numbers?

A: The PM2120-331K is obsolete; the PM2120-331K-RC is the active equivalent. The PM2120-331K-RC achieves ROHS3 compliance, whereas the original does not. All electrical and mechanical specifications remain unchanged.

Q: Are there packaging differences between PM2120-331K and PM2120-331K-RC?

A: The PM2120-331K is supplied in standard packaging; the PM2120-331K-RC is supplied in bulk packaging. Both maintain identical component specifications and physical form factors.

Q: What parameters must match for substitution eligibility?

A: Substitution requires matching inductance (330 µH ±10%), current rating (3.6 A minimum), DC resistance (100mOhm maximum), core material (iron), shielding type (unshielded), mounting configuration (surface mount), and physical dimensions (30.50mm × 25.40mm × 19.81mm).

Q: Is the PM2120-331K-RC suitable for applications originally designed for PM2120-331K?

A: Yes. The PM2120-331K-RC meets or exceeds all electrical and thermal specifications of the original design. ROHS3 compliance of the substitute provides additional regulatory alignment for modern manufacturing environments.