PM3340-101M Equivalent & Substitute Parts

Part Overview

The PM3340-101M is a 100 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 1.2 A continuous current with a maximum DC resistance of 220 mOhm. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part operates across a temperature range of -55°C to 105°C and is mounted as a surface mount device in a nonstandard package measuring 13.00mm × 10.20mm × 11.50mm (max height).

Key Parameters

Parameter	Value
Inductance	100 µH
Tolerance	±20%
Current Rating	1.2 A
Saturation Current (Isat)	2.5 A
DC Resistance (DCR)	220 mOhm Max
Shielding	Unshielded
Operating Temperature	-55°C to 105°C
Mounting Type	Surface Mount
Package Dimensions	13.00mm L × 10.20mm W × 11.50mm H (max)
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the PM3340-101M is determined by the following critical parameters:

Inductance Value: Must be 100 µH with ±20% tolerance
Current Rating: Must support minimum 1.2 A continuous current
Saturation Current: Must meet or exceed 2.5 A
DC Resistance: Must not exceed 220 mOhm
Shielding Configuration: Must be unshielded
Mounting Type: Must be surface mount
Package Compatibility: Physical dimensions must accommodate PCB layout constraints

Two substitute parts meet these criteria:

Direct Substitute: PF0698.104NLT (Pulse Electronics) — meets all electrical parameters with improved current rating (1.6 A) and lower DCR (200 mOhm), with active product status and RoHS3 compliance.

Similar Substitute: PF0382.104NLT (Pulse Electronics) — meets all electrical parameters with 1.5 A current rating and 200 mOhm DCR, with active product status and RoHS3 compliance.

Parameter Comparison

Parameter	PM3340-101M (Bourns)	PF0698.104NLT (Pulse)	PF0382.104NLT (Pulse)
Inductance	100 µH	100 µH	100 µH
Tolerance	±20%	±20%	±20%
Current Rating (Amps)	1.2 A	1.6 A	1.5 A
Saturation Current (Isat)	2.5 A	2.6 A	2.6 A
DC Resistance (DCR)	220 mOhm Max	200 mOhm Max	200 mOhm Max
Shielding	Unshielded	Unshielded	Unshielded
Operating Temperature	-55°C to 105°C	-40°C to 125°C	-40°C to 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package Dimensions (L × W × H max)	13.00mm × 10.20mm × 11.50mm	12.95mm × 9.40mm × 11.30mm	12.95mm × 9.40mm × 11.30mm
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	RoHS3 Compliant	RoHS3 Compliant

Engineering Selection Recommendations

Both Pulse Electronics substitutes provide active product status with RoHS3 compliance, addressing the obsolescence and regulatory limitations of the PM3340-101M.

PF0698.104NLT is the primary direct substitute, offering the highest current rating (1.6 A) and lowest DC resistance (200 mOhm) among available options. This part provides the greatest design margin for thermal and electrical performance.

PF0382.104NLT serves as an alternative substitute with a 1.5 A current rating and identical 200 mOhm DCR specification. Both Pulse parts feature slightly reduced physical dimensions (12.95mm × 9.40mm × 11.30mm) compared to the original, which may require PCB layout verification for existing designs.

The extended operating temperature range (-40°C to 125°C) of both substitutes covers the original specification range (-55°C to 105°C) for the upper temperature boundary, with a reduced lower limit of -40°C instead of -55°C.

Frequently Asked Questions (FAQ)

Q: Can PF0698.104NLT and PF0382.104NLT be used interchangeably with PM3340-101M?

A: Both parts meet the core electrical requirements (100 µH inductance, ±20% tolerance, unshielded configuration, and surface mount packaging). The primary differences are current rating (1.6 A vs. 1.5 A vs. 1.2 A), DC resistance (200 mOhm vs. 220 mOhm), and operating temperature range. Selection depends on your circuit's current requirements and temperature operating conditions.

Q: What are the physical dimension differences?

A: The PM3340-101M measures 13.00mm × 10.20mm × 11.50mm (max height). Both Pulse substitutes measure 12.95mm × 9.40mm × 11.30mm (max height). The reduced width (9.40mm vs. 10.20mm) and length (12.95mm vs. 13.00mm) require PCB footprint verification for existing designs.

Q: Why is the PM3340-101M obsolete?

A: The part is classified as obsolete by the manufacturer. Both substitute parts from Pulse Electronics maintain active product status with current manufacturing support and availability.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both PF0698.104NLT and PF0382.104NLT are RoHS3 compliant, whereas the original PM3340-101M is non-compliant. This compliance status is beneficial for applications subject to RoHS regulations.

Q: What is the difference between PF0698.104NLT and PF0382.104NLT?

A: Both parts share identical inductance (100 µH), tolerance (±20%), DC resistance (200 mOhm), saturation current (2.6 A), operating temperature range (-40°C to 125°C), and physical dimensions. The primary difference is current rating: PF0698.104NLT is rated for 1.6 A, while PF0382.104NLT is rated for 1.5 A.

Q: Does the operating temperature range difference affect compatibility?

A: The original part operates from -55°C to 105°C. Both substitutes operate from -40°C to 125°C. If your application requires operation below -40°C, the substitutes are not suitable. For applications within -40°C to 105°C, both substitutes are compatible.

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