PM3340-331M-RC Equivalent & Substitute Parts

Part Overview

The PM3340-331M-RC is a 330 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 600 mA continuous current with a maximum DC resistance of 700mOhm. This surface mount component operates across the temperature range of -55°C to 105°C and is ROHS3 compliant. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Inductance	330 µH
Inductance Tolerance	±20%
Current Rating	600 mA
Current - Saturation (Isat)	1.2 A
DC Resistance (DCR) Maximum	700 mOhm
Shielding	Unshielded
Core Material	Ferrite
Mounting Type	Surface Mount
Operating Temperature Range	-55°C to 105°C
Package Type	Nonstandard
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the PM3340-331M-RC is determined by the following critical parameters: inductance value (330 µH), inductance tolerance (±20%), shielding configuration (unshielded), core material (ferrite), mounting type (surface mount), and operating temperature range compatibility. The current rating and DC resistance must meet or exceed the original specifications to ensure functional equivalence in the application circuit.

Substitute parts are grouped into two categories:

Direct Substitutes (Pulse Electronics): PF0382.334NLT and PF0698.334NLT maintain the 330 µH inductance, ±20% tolerance, unshielded configuration, and surface mount design. These parts exceed the current rating (800 mA and 950 mA respectively) and offer improved DC resistance (580 mOhm maximum), providing enhanced performance margins.

Similar Substitutes (EPCOS - TDK Electronics): B82464G4334M000, B82464P4334M000, and B82476A1334M000 maintain the 330 µH inductance, ±20% tolerance, and surface mount design. B82464G4334M000 and B82464P4334M000 feature shielded construction, while B82476A1334M000 remains unshielded. All three operate across an extended temperature range (-55°C to 150°C) and carry AEC-Q200 automotive qualification where applicable.

Parameter Comparison

Part Number	Manufacturer	Inductance	Tolerance	Current Rating (mA)	Isat (A)	DCR Max (mOhm)	Shielding	Core Type	Temp Range (°C)	Status
PM3340-331M-RC	Bourns Inc.	330 µH	±20%	600	1.2	700	Unshielded	Ferrite Drum Core	-55 to 105	Obsolete
PF0382.334NLT	Pulse Electronics	330 µH	±20%	800	1.35	580	Unshielded	Wirewound	-40 to 125	Active
PF0698.334NLT	Pulse Electronics	330 µH	±20%	950	1.35	580	Unshielded	Wirewound	-40 to 125	Active
B82464G4334M000	EPCOS - TDK Electronics	330 µH	±20%	590	0.65	650	Shielded	Ferrite Drum Core	-55 to 150	Active
B82464P4334M000	EPCOS - TDK Electronics	330 µH	±20%	590	0.65	650	Shielded	Ferrite Drum Core	-55 to 150	Active
B82476A1334M000	EPCOS - TDK Electronics	330 µH	±20%	600	0.6	810	Unshielded	Ferrite Drum Core	-55 to 150	Active

Engineering Selection Recommendations

For unshielded applications with standard current requirements: PF0382.334NLT and PF0698.334NLT from Pulse Electronics are active production parts with superior current handling (800 mA and 950 mA) and lower DC resistance (580 mOhm). Both maintain ROHS3 compliance and unlimited moisture sensitivity rating. The extended operating temperature range (-40°C to 125°C) covers most industrial applications, though designs requiring -55°C operation must verify compatibility.

For unshielded applications matching original specifications: B82476A1334M000 from EPCOS - TDK Electronics maintains the 600 mA current rating and unshielded configuration of the original part. This ferrite drum core inductor offers an extended temperature range (-55°C to 150°C) and is actively produced. The 810 mOhm maximum DC resistance is slightly higher than the original 700 mOhm specification.

For shielded applications or automotive-qualified designs: B82464G4334M000 and B82464P4334M000 from EPCOS - TDK Electronics provide shielded ferrite drum core construction with AEC-Q200 automotive qualification. Both are actively produced with extended temperature range (-55°C to 150°C) and ROHS3 compliance. Current rating is 590 mA with 650 mOhm maximum DC resistance. These parts are suitable for applications requiring electromagnetic shielding or automotive-grade reliability.

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and REACH unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can PF0382.334NLT or PF0698.334NLT directly replace PM3340-331M-RC in all applications?

A: Both Pulse Electronics parts maintain the critical electrical parameters: 330 µH inductance, ±20% tolerance, unshielded configuration, and surface mount design. The higher current ratings (800 mA and 950 mA) and lower DC resistance (580 mOhm) provide improved performance margins. However, the operating temperature range is -40°C to 125°C versus the original -55°C to 105°C. Designs operating below -40°C require verification or selection of alternative parts.

Q: What is the difference between the Pulse Electronics and EPCOS - TDK Electronics substitutes?

A: Pulse Electronics parts (PF0382.334NLT and PF0698.334NLT) are unshielded wirewound inductors with higher current ratings and lower DC resistance. EPCOS - TDK Electronics parts include both shielded options (B82464G4334M000, B82464P4334M000) and an unshielded option (B82476A1334M000), all featuring ferrite drum core construction. EPCOS parts offer extended temperature range (-55°C to 150°C) and automotive qualification (AEC-Q200) where applicable.

Q: Are there physical size differences between the original and substitute parts?

A: Yes. The original PM3340-331M-RC measures 0.512" L × 0.402" W × 0.453" H (13.00mm × 10.20mm × 11.50mm). Pulse Electronics parts measure 0.510" L × 0.370" W × 0.445" H (12.95mm × 9.40mm × 11.30mm). EPCOS shielded parts (B82464G4334M000, B82464P4334M000) measure 0.409" L × 0.409" W × 0.189" H (10.40mm × 10.40mm × 4.80mm). EPCOS unshielded part (B82476A1334M000) measures 0.510" L × 0.370" W × 0.200" H (12.95mm × 9.40mm × 5.08mm). PCB layout verification is required for all substitutions.

Q: Which substitute part is best for new designs?

A: For new designs, select based on application requirements: unshielded with high current capability requires PF0698.334NLT; unshielded with standard current and extended temperature range requires B82476A1334M000; shielded with automotive qualification requires B82464G4334M000 or B82464P4334M000. All are actively produced and ROHS3 compliant.

Q: What compliance certifications do the substitute parts carry?

A: All substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating. EPCOS - TDK Electronics parts B82464G4334M000, B82464P4334M000, and B82476A1334M000 carry AEC-Q200 automotive qualification. Pulse Electronics parts PF0382.334NLT and PF0698.334NLT do not list automotive qualification.

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