PM42S-151-RC Equivalent & Substitute Parts

Part Overview

The PM42S-151-RC is a 150 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 280 mA continuous current with a maximum DC resistance of 2.6Ohm. This surface mount component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently active in production with 1090 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the same performance envelope.

Substiute Parts

PM42S-151-RC

Bourns Inc.In Stock: 1141PM42S-151-RC Datasheet

Current PartRFQ

SRR4018-151Y

Bourns Inc.In Stock: 1705SRR4018-151Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SRR4018-151Y qualifies as an equivalent substitute for the PM42S-151-RC based on the following critical parameters:

• Inductance value: 150 µH with ±30% tolerance
• Current rating: 280 mA continuous
• Saturation current: 260 mA
• DC resistance: 2.6Ohm maximum
• Core material: Ferrite shielded drum core
• Q factor: 14 @ 796kHz
• Self resonant frequency: 10 MHz
• Operating temperature: -40°C to 125°C
• Mounting: Surface mount
• Compliance: ROHS3 compliant, MSL 1

Both parts are manufactured by Bourns Inc. and share identical electrical specifications. The primary difference lies in package dimensions and form factor classification.

Parameter Comparison

Engineering Selection Recommendations

Both PM42S-151-RC and SRR4018-151Y are active production components from Bourns Inc. with full ROHS3 compliance and identical electrical performance specifications. Selection between these parts should be based on:

PCB layout constraints: The SRR4018-151Y offers a lower seated height of 0.079" (2.00mm) compared to the PM42S-151-RC at 0.118" (3.00mm), making it suitable for space-constrained applications.

Supply availability: The SRR4018-151Y currently has higher inventory (1664 units) versus PM42S-151-RC (1090 units).

Package classification: PM42S-151-RC uses a nonstandard package designation, while SRR4018-151Y uses the 1919 (4848 Metric) package classification.

Both parts maintain identical electrical characteristics and thermal operating range, ensuring functional interchangeability within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Are PM42S-151-RC and SRR4018-151Y electrically identical?

A: Yes. Both parts share identical inductance (150 µH ±30%), current rating (280 mA), saturation current (260 mA), DC resistance (2.6Ohm max), Q factor (14 @ 796kHz), and self resonant frequency (10 MHz). They are functionally equivalent in circuit performance.

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

A: The main differences are physical height and package classification. The SRR4018-151Y has a maximum seated height of 0.079" (2.00mm) versus 0.118" (3.00mm) for the PM42S-151-RC. Both maintain the same footprint of 0.189" x 0.189" (4.80mm x 4.80mm).

Q: Can I substitute SRR4018-151Y for PM42S-151-RC on an existing PCB?

A: Direct substitution is possible if PCB layout accommodates the lower profile of the SRR4018-151Y. The smaller height may require verification of clearance to adjacent components or solder joint geometry, but electrical performance remains unchanged.

Q: Are both parts RoHS compliant?

A: Yes. Both PM42S-151-RC and SRR4018-151Y are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which part should I select for new designs?

A: Selection depends on available inventory and PCB height constraints. Both parts are active production components suitable for new designs. The SRR4018-151Y offers lower profile advantage and higher current inventory availability.