PM428S-101-RC Equivalent & Substitute Parts

Part Overview

The PM428S-101-RC is a 100 µH shielded drum core wirewound inductor manufactured by Bourns Inc., designed for surface mount applications. This component delivers 510 mA current rating with 600mOhm maximum DC resistance and operates across -40°C to 125°C. The part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when electrical characteristics, mechanical dimensions, and thermal specifications align within the allowed parameter tolerances for this inductor category.

Substiute Parts

PM428S-101-RC

Bourns Inc.In Stock: 711PM428S-101-RC Datasheet

Current PartRFQ

SRR4028-101Y

Bourns Inc.In Stock: 15659SRR4028-101Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM428S-101-RC is determined by strict alignment of the following critical parameters:

Electrical Parameters: Inductance value (100 µH), inductance tolerance (±30%), current rating (510 mA), saturation current (300 mA), and DC resistance (600 mOhm maximum) must match exactly.

Core & Shielding: Ferrite core material and shielded construction are mandatory for electromagnetic compatibility and performance consistency.

Thermal Specifications: Operating temperature range (-40°C to 125°C) and frequency characteristics (Q factor 8.78 @ 796 kHz, self resonant frequency 9 MHz) must be maintained.

Mechanical Compatibility: Surface mount mounting type, physical dimensions (4.80mm x 4.80mm), and seated height (3.00mm maximum) ensure PCB layout compatibility.

Compliance & Certifications: ROHS3 compliance and MSL Level 1 rating are required for supply chain and manufacturing process alignment.

The SRR4028-101Y meets all substitution criteria within these parameters.

Parameter Comparison

Engineering Selection Recommendations

Both PM428S-101-RC and SRR4028-101Y are active products from Bourns Inc. with identical electrical, thermal, and mechanical specifications. Selection between these parts is based on availability and supply chain requirements rather than technical performance differences.

The PM428S-101-RC is packaged as Nonstandard, while the SRR4028-101Y uses 1919 (4848 Metric) package designation. Both maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and assembly processes.

Current inventory shows SRR4028-101Y at 15,600 pieces versus PM428S-101-RC at 669 pieces, making the SRR4028-101Y the preferred selection for high-volume applications where supply continuity is critical.

Frequently Asked Questions (FAQ)

Q: Can SRR4028-101Y directly replace PM428S-101-RC in existing designs?

A: Yes. All electrical parameters, thermal specifications, mechanical dimensions, and compliance certifications are identical. PCB layout and circuit performance remain unchanged.

Q: Are there differences in package designation between these parts?

A: Package designation differs (Nonstandard versus 1919/4848 Metric), but physical dimensions and mounting characteristics are identical. Both are surface mount components with 4.80mm x 4.80mm footprint and 3.00mm maximum seated height.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both PM428S-101-RC and SRR4028-101Y carry ROHS3 compliance, MSL Level 1 rating, and REACH Unaffected status.

Q: What is the inductance tolerance for these parts?

A: Both parts maintain ±30% inductance tolerance at 100 kHz test frequency.

Q: Are there any thermal or frequency performance differences?

A: No. Operating temperature range (-40°C to 125°C), Q factor (8.78 @ 796 kHz), and self resonant frequency (9 MHz) are identical across both parts.

Q: Which part should be selected for new designs?

A: Selection is based on supply availability. SRR4028-101Y offers higher inventory levels. Both parts are active products suitable for new applications.