PM32-470M-RC Equivalent & Substitute Parts

Part Overview

The PM32-470M-RC is a 47 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., designed for surface mount applications. This component is rated for 360 mA continuous current with a maximum DC resistance of 1.27Ohm and operates across the temperature range of -40°C to 125°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits component optimization within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Inductance	47 µH
Tolerance	±20%
Current Rating	360 mA
Current - Saturation (Isat)	400 mA
DC Resistance (DCR)	1.27Ohm Max
Core Material	Ferrite
Shielding	Unshielded
Package Type	Nonstandard
Size	0.118" L x 0.110" W (3.00mm x 2.80mm)
Height - Seated (Max)	0.110" (2.80mm)
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the PM32-470M-RC is determined by strict equivalence across the following critical parameters:

Inductance value: 47 µH (exact match required)
Current rating: 360 mA minimum
Saturation current: 400 mA minimum
DC resistance: 1.27Ohm maximum
Core material: Ferrite
Shielding configuration: Unshielded
Physical dimensions: 3.00mm L x 2.80mm W x 2.80mm H maximum
Mounting type: Surface Mount
Operating temperature range: -40°C to 125°C minimum

The SDR0302-470KL meets all these criteria and qualifies as a direct substitute. The primary difference between these parts is the inductance tolerance specification (±20% for PM32-470M-RC versus ±10% for SDR0302-470KL), which represents an improvement in tolerance performance for the substitute part.

Parameter Comparison

Parameter	PM32-470M-RC	SDR0302-470KL	Match Status
Manufacturer	Bourns Inc.	Bourns Inc.	Identical
Inductance	47 µH	47 µH	Identical
Inductance Tolerance	±20%	±10%	Substitute is tighter
Current Rating (Amps)	360 mA	360 mA	Identical
Current - Saturation (Isat)	400 mA	400 mA	Identical
DC Resistance (DCR)	1.27Ohm Max	1.27Ohm Max	Identical
Core Material	Ferrite	Ferrite	Identical
Shielding	Unshielded	Unshielded	Identical
Q @ Freq	23 @ 2.52MHz	23 @ 2.52MHz	Identical
Frequency - Self Resonant	17MHz	17MHz	Identical
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	Identical
Size / Dimension	0.118" L x 0.110" W (3.00mm x 2.80mm)	0.118" L x 0.110" W (3.00mm x 2.80mm)	Identical
Height - Seated (Max)	0.110" (2.80mm)	0.110" (2.80mm)	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Product Status	Active	Active	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	1 (Unlimited)	1 (Unlimited)	Identical

Engineering Selection Recommendations

Both the PM32-470M-RC and SDR0302-470KL are active production components from Bourns Inc. with identical ROHS3 compliance and REACH unaffected status. Both parts carry MSL 1 rating, indicating unlimited shelf life under standard storage conditions.

The SDR0302-470KL offers improved inductance tolerance (±10% versus ±20%), which may provide superior performance in applications where inductance accuracy is critical. Both parts are suitable for applications requiring ferrite core inductors with 47 µH inductance, 360 mA current rating, and surface mount packaging in nonstandard form factor.

Selection between these parts should be based on tolerance requirements, inventory availability, and lead time considerations. Both parts are electrically and mechanically interchangeable within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the SDR0302-470KL be used as a direct replacement for the PM32-470M-RC?

A: Yes. Both parts share identical electrical specifications (47 µH inductance, 360 mA current rating, 1.27Ohm DCR), core material (ferrite), shielding configuration (unshielded), physical dimensions (3.00mm x 2.80mm x 2.80mm), and operating temperature range (-40°C to 125°C). The SDR0302-470KL features tighter inductance tolerance (±10% versus ±20%).

Q: What is the primary difference between these two parts?

A: The inductance tolerance specification differs. The PM32-470M-RC has ±20% tolerance, while the SDR0302-470KL has ±10% tolerance. All other electrical and mechanical parameters are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL 1 ratings. Both are active production components from Bourns Inc.

Q: Will the SDR0302-470KL fit in the same PCB footprint as the PM32-470M-RC?

A: Yes. Both parts have identical physical dimensions (0.118" L x 0.110" W, 3.00mm x 2.80mm) and maximum seated height (0.110", 2.80mm). They are compatible with the same surface mount footprint.

Q: Are there any thermal or frequency performance differences?

A: No. Both parts operate across the same temperature range (-40°C to 125°C), have identical Q factor (23 @ 2.52MHz), and identical self-resonant frequency (17MHz).

Q: Which part should be selected for new designs?

A: Selection depends on tolerance requirements and availability. The SDR0302-470KL offers superior inductance tolerance (±10%), which may be preferable for applications requiring tighter inductance accuracy. Both parts are suitable for new designs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message