PM124SH-101M-RC Equivalent & Substitute Parts

Part Overview

The PM124SH-101M-RC is a 100 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 1.25 A continuous current with a maximum DC resistance of 300mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is designed for applications requiring controlled inductance with electromagnetic shielding in compact form factors.

The part is currently in active production status with 916 units available in inventory. Equivalent substitute parts may be required due to supply chain constraints, design optimization, or specific tolerance requirements in production environments.

Key Parameters

Parameter	Value
Inductance	100 µH
Current Rating	1.25 A
DC Resistance (DCR)	300mOhm Max
Shielding	Shielded
Core Material	Ferrite
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 125°C
Package Type	Tape & Reel (TR)
Size	12.50mm x 12.50mm x 4.50mm (Max Height)

Substitute Part Grouping Explanation

Substitution eligibility for the PM124SH-101M-RC is determined by the following critical parameters:

Inductance value: 100 µH (exact match required)
Current rating: 1.25 A minimum
DC resistance: 300mOhm maximum
Shielding: Shielded configuration
Core material: Ferrite drum core
Mounting: Surface mount, nonstandard package
Physical dimensions: 12.50mm x 12.50mm footprint with 4.50mm maximum height
Operating temperature range: -40°C to 125°C minimum
Packaging format: Tape & Reel

The SRR1240-101K meets all critical electrical and mechanical parameters required for direct substitution. Both parts share identical inductance, current rating, DC resistance, shielding configuration, core material, mounting type, dimensions, and operating temperature specifications.

Parameter Comparison

Parameter	PM124SH-101M-RC	SRR1240-101K	Match Status
Manufacturer	Bourns Inc.	Bourns Inc.	Identical
Inductance	100 µH	100 µH	Identical
Tolerance	±20%	±10%	Substitute tighter
Current Rating	1.25 A	1.25 A	Identical
Current - Saturation (Isat)	1.2A	1.2A	Identical
DC Resistance (DCR)	300mOhm Max	300mOhm Max	Identical
Shielding	Shielded	Shielded	Identical
Core Material	Ferrite	Ferrite	Identical
Q @ Freq	14 @ 796kHz	14 @ 796kHz	Identical
Frequency - Self Resonant	8MHz	8MHz	Identical
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Size / Dimension	12.50mm x 12.50mm	12.50mm x 12.50mm	Identical
Height - Seated (Max)	4.50mm	4.50mm	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical
Product Status	Active	Active	Identical
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Identical
Inventory Availability	916 Pcs	4254 Pcs	Substitute higher

Engineering Selection Recommendations

Both the PM124SH-101M-RC and SRR1240-101K are active production components from Bourns Inc. with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on the following factors:

The SRR1240-101K offers tighter inductance tolerance (±10% versus ±20%), which may be advantageous in applications requiring stricter inductance specifications. The SRR1240-101K also demonstrates significantly higher inventory availability (4254 units versus 916 units), reducing supply chain risk.

Both parts are electrically and mechanically interchangeable for applications requiring 100 µH inductance at 1.25 A with shielded ferrite drum core construction. The identical DC resistance, saturation current, Q factor, self-resonant frequency, and thermal operating range ensure functional equivalence in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the SRR1240-101K be used as a direct replacement for the PM124SH-101M-RC?

A: Yes. Both parts share identical electrical specifications (100 µH inductance, 1.25 A current rating, 300mOhm maximum DC resistance), mechanical dimensions (12.50mm x 12.50mm x 4.50mm), shielding configuration, and operating temperature range. The SRR1240-101K features tighter inductance tolerance (±10% versus ±20%), making it suitable for direct substitution.

Q: What is the difference in inductance tolerance between these parts?

A: The PM124SH-101M-RC has ±20% inductance tolerance, while the SRR1240-101K has ±10% tolerance. The tighter tolerance of the SRR1240-101K provides greater inductance accuracy for precision circuit applications.

Q: Are the physical packages identical?

A: Yes. Both parts are surface mount components with identical footprints (12.50mm x 12.50mm) and maximum seated height (4.50mm). Both are supplied in Tape & Reel packaging format.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the PM124SH-101M-RC and SRR1240-101K are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity ratings.

Q: Which part should be selected for new designs?

A: Selection should be based on application requirements. For applications requiring tighter inductance tolerance, the SRR1240-101K is preferred. For applications with standard tolerance requirements, either part is suitable. The SRR1240-101K offers superior inventory availability for production planning.

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