PM428S-820-RC Equivalent & Substitute Parts

Part Overview

The PM428S-820-RC is a 82 µH shielded drum core wirewound inductor manufactured by Bourns Inc., designed for surface mount applications. This component delivers 560 mA current rating with 520mOhm maximum DC resistance and operates across -40°C to 125°C. The part is ROHS3 compliant and currently active in production. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same inductance value, current rating, and shielding characteristics.

Substiute Parts

PM428S-820-RC

Bourns Inc.In Stock: 949PM428S-820-RC Datasheet

Current PartRFQ

SRR4028-820Y

Bourns Inc.In Stock: 4818SRR4028-820Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM428S-820-RC is determined by strict equivalence across the following critical parameters:

Inductance value must match at 82 µH with ±30% tolerance. Current rating must equal or exceed 560 mA continuous operation. Saturation current (Isat) must be at minimum 320 mA. DC resistance must not exceed 520 mOhm. Shielding configuration must be shielded drum core wirewound type. Core material must be ferrite. Operating temperature range must span -40°C to 125°C. Self-resonant frequency must be 8 MHz. Mounting configuration must be surface mount compatible. Physical footprint dimensions must be 4.80mm x 4.80mm with maximum seated height of 3.00mm. RoHS3 compliance and MSL 1 rating are required.

The SRR4028-820Y meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both PM428S-820-RC and SRR4028-820Y are active production components from Bourns Inc. with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability, supply chain considerations, or packaging preferences. The PM428S-820-RC is available with 913 pieces in stock, while the SRR4028-820Y offers 4800 pieces in stock. Both components maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. The difference in package designation (Nonstandard for PM428S versus 1919/4848 Metric for SRR4028) reflects series-specific packaging conventions while maintaining identical physical footprint and mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can SRR4028-820Y replace PM428S-820-RC in existing designs? A: Yes. Both components share identical inductance (82 µH), current rating (560 mA), DC resistance (520 mOhm max), shielding configuration, core material, operating temperature range, and physical dimensions. No circuit redesign is required.

Q: Are there differences in package compatibility? A: Both parts use identical surface mount footprints of 4.80mm x 4.80mm with 3.00mm maximum seated height. Package designation differences (Nonstandard versus 1919/4848 Metric) reflect manufacturer series classification but do not affect PCB placement or reflow compatibility.

Q: What determines substitution eligibility for these inductors? A: Substitution requires matching inductance value, current rating, saturation current, DC resistance, shielding type, core material, operating temperature range, self-resonant frequency, and physical dimensions. All parameters must meet or exceed the original specification.

Q: Are both parts compliant with current regulations? A: Yes. Both PM428S-820-RC and SRR4028-820Y are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8504.50.8000.

Q: What is the moisture sensitivity consideration? A: Both components carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.