PM3308-331M-RC Equivalent & Substitute Parts

Part Overview

The PM3308-331M-RC is a 330 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 300 mA continuous current with a maximum DC resistance of 2.7Ohm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The part operates across an industrial temperature range of -55°C to 125°C and complies with ROHS3 and REACH standards.

Substiute Parts

PM3308-331M-RC

Bourns Inc.In Stock: 1094PM3308-331M-RC Datasheet

Current PartRFQ

P0762.334NLT

Pulse ElectronicsIn Stock: 884P0762.334NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM3308-331M-RC is determined by strict alignment of the following critical parameters:

• Inductance value: 330 µH with ±20% tolerance
• Current rating: 300 mA minimum continuous current capability
• Saturation current: 400 mA minimum
• DC resistance: 2.7Ohm maximum
• Shielding configuration: Unshielded
• Mounting technology: Surface Mount
• Physical footprint: Nonstandard package with dimensions 0.512" L x 0.374" W x 0.118" H (±0.002" tolerance acceptable)
• Inductance measurement frequency: 100 kHz
• Regulatory compliance: ROHS3 and REACH standards

The P0762.334NLT from Pulse Electronics meets all specified electrical and mechanical parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The P0762.334NLT from Pulse Electronics is qualified as a direct substitute for the obsolete PM3308-331M-RC. The substitute part maintains identical electrical specifications across all critical parameters: inductance, current rating, saturation current, and DC resistance. Physical dimensions are within acceptable tolerance for PCB footprint compatibility. Both parts carry ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The Pulse Electronics part is currently in active production status, providing supply continuity for applications requiring this inductor specification. The operating temperature range of the substitute (-40°C to 130°C) encompasses the original part's range (-55°C to 125°C) for most industrial applications, with the exception of extreme low-temperature operation below -40°C.

Frequently Asked Questions (FAQ)

Q: Can the P0762.334NLT be used as a direct replacement on existing PCBs designed for the PM3308-331M-RC?

A: Yes. The physical dimensions are compatible within standard PCB manufacturing tolerances. The P0762.334NLT measures 0.510" L x 0.370" W (12.95mm x 9.40mm) compared to the original 0.512" L x 0.374" W (13.00mm x 9.50mm), representing a variance of approximately 0.04mm in length and width. Both parts share identical height (0.118" / 3.00mm) and mounting type (Surface Mount). PCB footprints designed for the PM3308-331M-RC will accommodate the substitute without modification.

Q: Are there electrical performance differences between these parts?

A: No. Both inductors are specified at 330 µH with ±20% tolerance, 300 mA current rating, 400 mA saturation current, and 2.7Ohm maximum DC resistance. Both are measured at 100 kHz. Electrical performance is equivalent.

Q: What is the temperature operating range difference?

A: The PM3308-331M-RC operates from -55°C to 125°C, while the P0762.334NLT operates from -40°C to 130°C. For applications requiring operation below -40°C, the original Bourns part specification must be maintained. For standard industrial temperature ranges, the Pulse Electronics substitute is suitable.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the PM3308-331M-RC and P0762.334NLT are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What is the moisture sensitivity level for these inductors?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special environmental controls.