PM3340-150M Equivalent & Substitute Parts

Part Overview

The PM3340-150M is a 15 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 3 A continuous current with a maximum DC resistance of 42 mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across an industrial temperature range of -55°C to 105°C and is RoHS non-compliant, which may impact applications with strict environmental compliance requirements.

Key Parameters

Parameter	PM3340-150M
Inductance	15 µH
Tolerance	±20%
Current Rating	3 A
DC Resistance (DCR)	42 mOhm Max
Saturation Current (Isat)	7 A
Shielding	Unshielded
Core Material	Ferrite
Operating Temperature	-55°C to 105°C
Mounting Type	Surface Mount
Package Type	Nonstandard
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the PM3340-150M is determined by the following critical parameters:

Primary Matching Criteria:

Inductance value: 15 µH (exact match required)
Tolerance: ±20% (standard tolerance maintained)
Inductance test frequency: 100 kHz (standard test condition)
Mounting type: Surface Mount (form factor compatibility)

Secondary Compatibility Factors:

Current rating: Minimum 3 A (equal or greater acceptable)
DC resistance: Maximum 42 mOhm (lower values acceptable for improved performance)
Saturation current: Minimum 7 A (equal or greater acceptable)
Operating temperature range: Must encompass or exceed -55°C to 105°C
Shielding configuration: Unshielded preferred for direct replacement; shielded variants acceptable if EMI isolation is required

Substitute parts are grouped into two categories: direct functional equivalents (unshielded, ferrite core) and performance-enhanced alternatives (shielded variants with improved current handling or reduced DCR).

Parameter Comparison

Part Number	Manufacturer	Inductance	Current Rating	DCR (Max)	Isat	Shielding	Operating Temp	Product Status	RoHS Compliance
PM3340-150M	Bourns Inc.	15 µH	3 A	42 mOhm	7 A	Unshielded	-55°C to 105°C	Obsolete	Non-compliant
PF0698.153NLT	Pulse Electronics	15 µH	4.5 A	29 mOhm	7.1 A	Unshielded	-40°C to 125°C	Active	ROHS3 Compliant
B82464G4153M000	EPCOS - TDK Electronics	15 µH	2.75 A	40 mOhm	3.1 A	Shielded	-55°C to 150°C	Active	ROHS3 Compliant
B82464P4153M000	EPCOS - TDK Electronics	15 µH	2.75 A	40 mOhm	3.1 A	Shielded	-55°C to 150°C	Active	ROHS3 Compliant
B82476A1153M000	EPCOS - TDK Electronics	15 µH	3.1 A	40 mOhm	3 A	Unshielded	-55°C to 150°C	Active	ROHS3 Compliant
DRA124-150-R	Eaton - Electronics Division	15 µH	3.1 A	44 mOhm	5.31 A	Shielded	-40°C to 165°C	Active	ROHS3 Compliant
PF0382.153NLT	Pulse Electronics	15 µH	4.2 A	31 mOhm	7.1 A	Unshielded	-40°C to 125°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute (Direct Replacement): PF0698.153NLT (Pulse Electronics) provides the closest functional match to PM3340-150M. This part maintains unshielded configuration, exceeds current rating requirements (4.5 A vs. 3 A), and reduces DC resistance to 29 mOhm. The part is active in production and ROHS3 compliant, addressing the obsolescence and environmental compliance limitations of the original component. Operating temperature range extends to 125°C, covering the original specification.

Secondary Substitute (Unshielded, Enhanced Performance): PF0382.153NLT (Pulse Electronics) offers similar unshielded characteristics with 4.2 A current rating and 31 mOhm DCR. This part is suitable for applications where the extended current capacity and reduced resistance provide performance benefits.

Shielded Alternatives (EMI Isolation Required): B82476A1153M000 (EPCOS - TDK Electronics) provides unshielded operation with 3.1 A rating and extended temperature range to 150°C. B82464G4153M000 and B82464P4153M000 (EPCOS - TDK Electronics) offer shielded configurations with AEC-Q200 automotive qualification, suitable for noise-sensitive applications. DRA124-150-R (Eaton) provides shielded operation with AEC-Q200 rating and the widest operating temperature range (-40°C to 165°C).

All substitute parts are active in production status and ROHS3 compliant, eliminating supply chain and environmental compliance risks associated with the obsolete PM3340-150M.

Frequently Asked Questions (FAQ)

Q: Can PF0698.153NLT directly replace PM3340-150M without circuit modifications? A: Yes. Both parts share identical inductance (15 µH), tolerance (±20%), and unshielded configuration. PF0698.153NLT exceeds the current rating and reduces DC resistance, making it a direct functional upgrade. Verify PCB footprint compatibility due to nonstandard package dimensions.

Q: What is the difference between unshielded and shielded 15 µH inductors in this list? A: Unshielded inductors (PF0698.153NLT, PF0382.153NLT, B82476A1153M000) minimize magnetic field containment and are suitable for general-purpose applications. Shielded inductors (B82464G4153M000, B82464P4153M000, DRA124-150-R) reduce electromagnetic interference and are required in noise-sensitive circuits or when components are placed in close proximity.

Q: Why do some substitutes have lower current ratings than PM3340-150M? A: B82464G4153M000 and B82464P4153M000 are rated for 2.75 A, below the original 3 A specification. These parts are suitable only if circuit design allows operation below 3 A. For applications requiring full 3 A capacity, select PF0698.153NLT, PF0382.153NLT, B82476A1153M000, or DRA124-150-R.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitutes are ROHS3 compliant, addressing the non-compliance status of the obsolete PM3340-150M. This compliance is mandatory for applications subject to environmental regulations.

Q: What is the significance of AEC-Q200 rating on some substitutes? A: AEC-Q200 certification indicates automotive-grade qualification with enhanced reliability testing. B82464G4153M000, B82464P4153M000, and DRA124-150-R carry this certification, making them suitable for automotive and high-reliability applications.

Q: How do DC resistance differences affect circuit performance? A: Lower DC resistance reduces power dissipation and heat generation. PF0698.153NLT (29 mOhm) and PF0382.153NLT (31 mOhm) dissipate less power than PM3340-150M (42 mOhm). In current-limited applications, this difference is negligible; in high-current or thermal-sensitive designs, lower DCR provides performance benefits.

Q: Can I use a shielded substitute in place of the unshielded PM3340-150M? A: Yes, functionally. Shielded variants (B82464G4153M000, B82464P4153M000, DRA124-150-R) provide identical inductance and tolerance. However, shielding alters magnetic field distribution and may affect circuit behavior in sensitive applications. Verify circuit performance through testing if EMI characteristics are critical.

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