PM32-101M-RC Equivalent & Substitute Parts

Part Overview

The PM32-101M-RC is a 100 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 260 mA continuous current with a maximum DC resistance of 2.85Ohm. This surface mount component operates across the temperature range of -40°C to 125°C and is classified as Active product status with ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across critical parameters including inductance value, current rating, DC resistance, and physical dimensions. The SDR0302-101KL represents a direct functional alternative within the Bourns product portfolio.

Key Parameters

Parameter	Value
Inductance	100 µH
Current Rating	260 mA
DC Resistance (Max)	2.85Ohm
Saturation Current (Isat)	280 mA
Core Material	Ferrite
Shielding	Unshielded
Operating Temperature Range	-40°C to 125°C
Physical Dimensions	3.00mm L x 2.80mm W x 2.80mm H
Mounting Type	Surface Mount
Packaging	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitution eligibility for the PM32-101M-RC is determined by strict equivalence across the following critical parameters:

Inductance value: 100 µH (exact match required)
Current rating: 260 mA minimum
DC resistance: 2.85Ohm maximum
Saturation current: 280 mA minimum
Core type: Ferrite, unshielded drum core
Physical dimensions: 3.00mm x 2.80mm x 2.80mm (surface mount)
Operating temperature: -40°C to 125°C minimum range
Mounting: Surface mount, nonstandard package
Compliance: ROHS3 compliant

The SDR0302-101KL meets all substitution criteria with identical electrical ratings and physical form factor, differing only in inductance tolerance specification.

Parameter Comparison

Parameter	PM32-101M-RC	SDR0302-101KL	Match Status
Inductance	100 µH	100 µH	Equivalent
Inductance Tolerance	±20%	±10%	SDR0302 tighter
Current Rating (Amps)	260 mA	260 mA	Equivalent
Saturation Current (Isat)	280 mA	280 mA	Equivalent
DC Resistance (Max)	2.85Ohm	2.85Ohm	Equivalent
Q @ Frequency	40 @ 796kHz	40 @ 796kHz	Equivalent
Self Resonant Frequency	10 MHz	10 MHz	Equivalent
Core Material	Ferrite	Ferrite	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Operating Temperature	-40°C to 125°C	-40°C to 125°C	Equivalent
Physical Dimensions	3.00mm x 2.80mm x 2.80mm	3.00mm x 2.80mm x 2.80mm	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Equivalent
Product Status	Active	Active	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
MSL Rating	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

Both PM32-101M-RC and SDR0302-101KL are Active status products with full ROHS3 compliance and REACH unaffected designation, making either suitable for applications requiring regulatory compliance in consumer and industrial electronics.

The SDR0302-101KL provides tighter inductance tolerance at ±10% compared to the PM32-101M-RC at ±20%, offering improved consistency for precision circuit applications where inductance variation must be minimized. Both components share identical electrical performance across current rating, DC resistance, saturation characteristics, and frequency response.

Selection between these parts should be based on tolerance requirements, inventory availability, and lead time considerations. The SDR0302-101KL currently maintains higher inventory levels (3028 pcs vs 982 pcs), which may influence procurement decisions for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can SDR0302-101KL replace PM32-101M-RC in existing designs?

A: Yes. Both inductors are electrically and mechanically equivalent across all critical parameters: 100 µH inductance, 260 mA current rating, 2.85Ohm DC resistance, identical physical dimensions (3.00mm x 2.80mm x 2.80mm), and surface mount packaging. The SDR0302-101KL features tighter inductance tolerance (±10% vs ±20%), which may improve circuit performance in tolerance-sensitive applications.

Q: What are the key differences between these parts?

A: The primary difference is inductance tolerance specification. PM32-101M-RC carries ±20% tolerance, while SDR0302-101KL carries ±10% tolerance. All other electrical and mechanical parameters are identical. Both are ROHS3 compliant with Active product status.

Q: Are the physical packages identical?

A: Yes. Both components use identical surface mount nonstandard packages with dimensions of 3.00mm length x 2.80mm width x 2.80mm seated height, and both are supplied in Tape & Reel packaging format.

Q: Do both parts operate across the same temperature range?

A: Yes. Both PM32-101M-RC and SDR0302-101KL operate across -40°C to 125°C, with identical saturation current (280 mA) and self-resonant frequency (10 MHz).

Q: Which part should be selected for new designs?

A: Selection depends on tolerance requirements. For applications requiring tighter inductance tolerance and improved consistency, SDR0302-101KL is preferred. For applications where ±20% tolerance is acceptable, either part is suitable. Both maintain equivalent compliance certifications and Active product status.

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