PM5022-331M Equivalent & Substitute Parts

Part Overview

The PM5022-331M is a 330 µH unshielded drum core wirewound inductor rated for 1 A continuous current with 560 mOhm DC resistance, manufactured by Bourns Inc. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across -55°C to 105°C and is mounted as a surface mount nonstandard package component.

Substiute Parts

PM5022-331M

Bourns Inc.In Stock: 769PM5022-331M Datasheet

Current PartRFQ

PM5022-331M-RC

Bourns Inc.In Stock: 1291PM5022-331M-RC Datasheet

DirectRFQ

SDR0604-560KL

Bourns Inc.In Stock: 3825SDR0604-560KL Datasheet

DirectRFQ

SDR1806-331KL

Bourns Inc.In Stock: 1532SDR1806-331KL Datasheet

SimilarRFQ

UP5-331-R

Eaton - Electronics DivisionIn Stock: 719UP5-331-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM5022-331M is determined by the following critical parameters: inductance value (330 µH), current rating (minimum 1 A), DC resistance tolerance (560 mOhm nominal), saturation current (1.8 A minimum), core material (ferrite), shielding type (unshielded), and physical footprint compatibility (18.30mm x 14.00mm x 6.90mm maximum).

Substitute parts are grouped into two categories:

Direct Substitutes maintain identical or near-identical electrical specifications and physical dimensions, allowing pin-for-pin replacement with minimal circuit impact.

Similar Substitutes share the same inductance and current rating but may have variations in DC resistance, tolerance, or operating temperature range, requiring design verification before implementation.

Parameter Comparison

Engineering Selection Recommendations

PM5022-331M-RC (Bourns Inc.) is the primary direct substitute. It maintains identical inductance (330 µH), current rating (1 A), physical dimensions, and core material. DC resistance increases marginally from 560 mOhm to 580 mOhm, which falls within acceptable tolerance for most applications. This part is active in production, ROHS3 compliant, and available in Tape & Reel packaging with higher inventory availability (1254 pcs).

SDR1806-331KL (Bourns Inc.) is a direct electrical equivalent with identical inductance, current rating, saturation current, and physical footprint. DC resistance specification is 580 mOhm maximum. Tolerance improves to ±10%. This part is active, ROHS3 compliant, and available in Cut Tape & Digi-Reel packaging (1510 pcs inventory).

UP5-331-R (Eaton - Electronics Division) provides electrical equivalence with matching inductance (330 µH), current rating (1 A), and DC resistance (560 mOhm maximum). Physical dimensions are slightly larger (18.40mm x 15.00mm x 7.50mm). This part is active and RoHS compliant with 709 pcs inventory. Operating temperature range is -25°C to 105°C, which does not extend to the lower -55°C specification of the original part.

SDR0604-560KL (Bourns Inc.) is not recommended as a direct substitute due to significantly different inductance (56 µH versus 330 µH) and reduced current rating (680 mA versus 1 A). This part is suitable only for applications requiring lower inductance values.

Frequently Asked Questions (FAQ)

Q: Can PM5022-331M-RC be used as a direct replacement for PM5022-331M?

A: Yes. Both parts share identical inductance (330 µH), current rating (1 A), saturation current (1.8 A), and physical dimensions (18.30mm x 14.00mm x 6.90mm). DC resistance increases from 560 mOhm to 580 mOhm, representing a 3.6% increase within acceptable design margins for most applications. PM5022-331M-RC is active in production and ROHS3 compliant.

Q: What is the difference between PM5022-331M-RC and SDR1806-331KL?

A: Both parts are electrically equivalent with 330 µH inductance and 1 A current rating. SDR1806-331KL offers tighter tolerance (±10% versus ±20%) and identical physical dimensions. The primary difference is packaging format: PM5022-331M-RC is supplied in Tape & Reel, while SDR1806-331KL is available in Cut Tape & Digi-Reel. Both are ROHS3 compliant and active in production.

Q: Is UP5-331-R compatible with the original PM5022-331M?

A: UP5-331-R provides electrical equivalence with matching inductance (330 µH), current rating (1 A), and DC resistance (560 mOhm maximum). Physical dimensions are slightly larger (18.40mm x 15.00mm x 7.50mm versus 18.30mm x 14.00mm x 6.90mm). Operating temperature range is -25°C to 105°C, which does not cover the original part's lower -55°C specification. Verify PCB layout clearance and temperature requirements before selection.

Q: Why is SDR0604-560KL listed as a substitute if it has different inductance?

A: SDR0604-560KL is not a functional substitute for the PM5022-331M. It is listed in the original part's substitute field but has significantly different electrical characteristics (56 µH inductance versus 330 µH, 680 mA current rating versus 1 A). This part is suitable only for applications with different inductance requirements.

Q: What are the compliance differences between substitute parts?

A: PM5022-331M is RoHS non-compliant. All active substitute parts (PM5022-331M-RC, SDR1806-331KL, UP5-331-R, SDR0604-560KL) are RoHS compliant. For applications requiring RoHS compliance, any of the active substitutes are acceptable. All parts are REACH unaffected and classified as EAR99 for export control purposes.

Q: Which substitute offers the best availability?

A: SDR0604-560KL has the highest inventory (3800 pcs), but this part is not electrically equivalent. Among true substitutes, SDR1806-331KL offers 1510 pcs inventory, PM5022-331M-RC offers 1254 pcs, and UP5-331-R offers 709 pcs. Verify current stock levels with your supplier before final selection.