PM124SH-331M-RC Equivalent & Substitute Parts

Part Overview

The PM124SH-331M-RC is a 330 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 750 mA continuous current with a maximum DC resistance of 950 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 with substantial inventory availability. Substitute parts are identified when electrical characteristics, mechanical dimensions, and packaging specifications align within the allowable tolerances for this inductor category.

Substiute Parts

PM124SH-331M-RC

Bourns Inc.In Stock: 978PM124SH-331M-RC Datasheet

Current PartRFQ

SRR1240-331K

Bourns Inc.In Stock: 6470SRR1240-331K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The SRR1240-331K qualifies as a direct substitute for the PM124SH-331M-RC based on the following critical parameters:

Inductance value matches at 330 µH with compatible tolerance specification (±10% versus ±20%). Current rating is identical at 750 mA with matching saturation current. DC resistance maximum is equivalent at 950 mOhm. Core material, shielding configuration, and mounting type are identical. Physical dimensions are identical: 12.50mm x 12.50mm x 4.50mm. Operating temperature range is identical: -40°C to 125°C. Both components are surface mount, ferrite drum core shielded inductors in nonstandard packages with tape and reel packaging. Compliance certifications (ROHS3, REACH Unaffected, EAR99) are equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the PM124SH-331M-RC and SRR1240-331K are active production components from Bourns Inc. with full ROHS3 compliance and REACH unaffected status. The SRR1240-331K offers tighter inductance tolerance (±10% versus ±20%), which may provide improved circuit performance in applications requiring closer value matching. Both parts carry MSL rating 1 with unlimited moisture sensitivity, indicating no special storage or handling requirements. Selection between these parts should be based on tolerance requirements and inventory availability, as all electrical and mechanical specifications are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the SRR1240-331K replace the PM124SH-331M-RC in existing designs?

A: Yes. Both inductors share identical electrical ratings (330 µH, 750 mA, 950 mOhm DCR), core material, shielding, and physical dimensions. The SRR1240-331K features tighter inductance tolerance (±10% versus ±20%), making it suitable for applications where the PM124SH-331M-RC is specified.

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

A: The primary difference is inductance tolerance. The PM124SH-331M-RC has ±20% tolerance, while the SRR1240-331K has ±10% tolerance. All other electrical characteristics, physical dimensions, and compliance certifications are identical.

Q: Are the package dimensions identical?

A: Yes. Both parts measure 12.50mm length x 12.50mm width x 4.50mm height and use identical tape and reel packaging for surface mount assembly.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the PM124SH-331M-RC and SRR1240-331K are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Q: What is the operating temperature range for these inductors?

A: Both parts operate across -40°C to 125°C, with identical thermal performance characteristics.