PM104SH-331-RC Equivalent & Substitute Parts

Part Overview

The PM104SH-331-RC is a 330 µH shielded drum core wirewound inductor manufactured by Bourns Inc., designed for surface mount applications. This component delivers 550 mA current rating with 773mOhm maximum DC resistance and operates across the temperature range of -40°C to 125°C. The part is currently active in production and maintains ROHS3 compliance with unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical specifications are required for design flexibility, inventory management, or supply chain continuity.

Key Parameters

Parameter	Value
Inductance	330 µH
Tolerance	±30%
Current Rating	550 mA
Current - Saturation (Isat)	520 mA
DC Resistance (DCR)	773 mOhm Max
Shielding	Shielded
Type	Drum Core, Wirewound
Core Material	Ferrite
Mounting Type	Surface Mount
Package	Nonstandard
Size	10.00mm x 10.00mm x 4.10mm (Max Height)
Operating Temperature	-40°C to 125°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

The SRU1038-331Y qualifies as a direct substitute for the PM104SH-331-RC based on the following critical parameters:

Electrical equivalence is established through matching inductance value (330 µH), tolerance (±30%), current rating (550 mA), saturation current (520 mA), and DC resistance (773 mOhm). Both components utilize ferrite drum core construction with shielding and are rated for identical operating temperature ranges (-40°C to 125°C).

Mechanical compatibility is confirmed through identical physical dimensions (10.00mm x 10.00mm footprint with 4.10mm maximum seated height) and surface mount packaging in tape and reel format. Both parts maintain nonstandard package classification and identical MSL rating of 1 (unlimited moisture sensitivity).

Compliance alignment includes ROHS3 certification and REACH unaffected status for both components. The substitution is valid for applications where the specified electrical performance and thermal characteristics are required.

Parameter Comparison

Parameter	PM104SH-331-RC	SRU1038-331Y
Manufacturer	Bourns Inc.	Bourns Inc.
Inductance	330 µH	330 µH
Tolerance	±30%	±30%
Current Rating	550 mA	550 mA
Current - Saturation	520 mA	520 mA
DC Resistance	773 mOhm Max	773 mOhm
Shielding	Shielded	Shielded
Core Type	Drum Core, Wirewound, Ferrite	Drum Core, Wirewound, Ferrite
Q @ Frequency	20 @ 796 kHz	20 @ 796 kHz
Self Resonant Frequency	3 MHz	3 MHz
Operating Temperature	-40°C to 125°C	-40°C to 125°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	Nonstandard	Nonstandard
Size / Dimension	10.00mm x 10.00mm	10.00mm x 10.00mm
Height - Seated (Max)	4.10mm	4.10mm
Packaging Format	Tape & Reel (TR)	Tape & Reel (TR)
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both PM104SH-331-RC and SRU1038-331Y are active production components from Bourns Inc. with full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and supply chain requirements rather than electrical or mechanical performance differences. The SRU1038-331Y currently maintains higher inventory availability (1830 pcs) compared to PM104SH-331-RC (770 pcs), which may influence procurement decisions for high-volume applications. Both components are suitable for applications requiring 330 µH inductance with 550 mA current handling in surface mount configurations.

Frequently Asked Questions (FAQ)

Q: Can SRU1038-331Y be used as a direct replacement for PM104SH-331-RC?

A: Yes. Both components share identical electrical specifications (330 µH inductance, 550 mA current rating, 773 mOhm DC resistance), mechanical dimensions (10.00mm x 10.00mm footprint, 4.10mm maximum height), and compliance certifications (ROHS3, REACH unaffected). Surface mount compatibility and tape & reel packaging are equivalent.

Q: Are there differences in frequency response between these parts?

A: Both components exhibit identical Q factor (20 @ 796 kHz) and self-resonant frequency (3 MHz). The inductance frequency test specification differs (PM104SH-331-RC at 796 kHz, SRU1038-331Y at 100 kHz), but this represents the measurement condition rather than a performance difference.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching inductance value, tolerance, current rating, saturation current, DC resistance, shielding type, core material, physical dimensions, height, operating temperature range, mounting type, and compliance certifications. All these parameters are identical between PM104SH-331-RC and SRU1038-331Y.

Q: Are both parts suitable for the same PCB assembly process?

A: Yes. Both components use identical surface mount packaging with nonstandard case classification and tape & reel format. Physical footprint and height specifications are identical, ensuring compatibility with standard pick-and-place assembly equipment.

Q: What is the moisture sensitivity rating for these inductors?

A: Both components carry MSL rating 1 (unlimited), indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message