PMC0805-301 Ferrite Bead 300 Ohm 0805 Equivalent & Substitute Parts

Part Overview

The PMC0805-301 is a 300 Ohm ferrite bead in 0805 (2012 Metric) surface mount package manufactured by Bourns Inc. This component is rated for 200mA maximum current with 500mOhm DC resistance and operates across -55°C to 125°C. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing production and design updates. Ferrite beads in this specification are used for EMI suppression on power and signal lines in electronic circuits.

Key Parameters

Parameter	Value
Impedance @ Frequency	300 Ohms @ 100 MHz
Current Rating (Max)	200mA
DC Resistance (DCR) (Max)	500mOhm
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
Number of Lines	1
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PMC0805-301 is determined by strict alignment of core electrical and mechanical parameters. All substitute parts must meet the following criteria:

Critical Parameters for Substitution:

Impedance: 300 Ohms @ 100 MHz (exact match required)
Package: 0805 (2012 Metric) surface mount (exact match required)
Number of Lines: 1 (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
Current Rating: Must equal or exceed 200mA
DC Resistance: Must not exceed 500mOhm

Parts are grouped into two categories:

Direct Manufacturer Substitutes (Bourns Inc.): MH2029-301Y and MU2029-301Y maintain identical electrical specifications with improved current ratings and lower DCR, offering direct replacement capability with enhanced performance characteristics.

Parametric Equivalents (Multi-Manufacturer): Parts from TE Connectivity, Fair-Rite Products, Würth Elektronik, Murata Electronics, and Pulse Electronics meet the core electrical and mechanical requirements. These parts are functionally equivalent within the specified parameter ranges.

Excluded Parts: BLM21BB331SN1D, BLM21BD331SN1D, and 742792038 are listed as parametric references but do not qualify as direct substitutes due to impedance deviation (330 Ohms or 240 Ohms) or current rating mismatches.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Package	Product Status	RoHS Status
PMC0805-301	Bourns Inc.	300 Ohms	200mA	500mOhm	0805 (2012 Metric)	Obsolete	RoHS non-compliant
MH2029-301Y	Bourns Inc.	300 Ohms	1A	200mOhm	0805 (2012 Metric)	Active	ROHS3 Compliant
MU2029-301Y	Bourns Inc.	300 Ohms	500mA	300mOhm	0805 (2012 Metric)	Active	ROHS3 Compliant
2176486-4	TE Connectivity Passive Product	300 Ohms	300mA	250mOhm	0805 (2012 Metric)	Active	ROHS3 Compliant
2508053017Y0	Fair-Rite Products Corp.	300 Ohms	300mA	250mOhm	0805 (2012 Metric)	Active	ROHS3 Compliant
2508053017Z0	Fair-Rite Products Corp.	300 Ohms	200mA	250mOhm	0805 (2012 Metric)	Active	ROHS3 Compliant
742792035	Würth Elektronik	300 Ohms	300mA	300mOhm	0805 (2012 Metric)	Active	ROHS3 Compliant
BBBK00201209301Y00	Pulse Electronics	300 Ohms	300mA	300mOhm	0805 (2012 Metric)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: MH2029-301Y (Bourns Inc.) is the preferred direct substitute. It maintains identical impedance and package specifications while offering superior performance with 1A current rating and 200mOhm DCR. The part is active in production and ROHS3 compliant, eliminating compliance concerns associated with the obsolete PMC0805-301.

Secondary Recommendation: MU2029-301Y (Bourns Inc.) provides an alternative from the same manufacturer with 500mA current rating and 300mOhm DCR. This part is suitable for applications where the 1A rating of MH2029-301Y exceeds requirements.

Multi-Manufacturer Alternatives: 2508053017Z0 (Fair-Rite Products Corp.) matches the original 200mA current rating exactly while providing improved DCR at 250mOhm. All parametric equivalents listed are ROHS3 compliant and active in production, ensuring long-term availability.

Compliance Consideration: The PMC0805-301 is RoHS non-compliant. All recommended substitutes are ROHS3 compliant, supporting regulatory requirements for new designs and manufacturing updates.

Frequently Asked Questions (FAQ)

Q: Can MH2029-301Y replace PMC0805-301 directly? A: Yes. MH2029-301Y is a direct substitute with identical impedance (300 Ohms @ 100 MHz), package (0805), and operating temperature range. The higher current rating (1A vs. 200mA) and lower DCR (200mOhm vs. 500mOhm) provide improved performance without compatibility issues.

Q: What is the difference between MH2029-301Y and MU2029-301Y? A: Both are Bourns ferrite beads with 300 Ohms impedance in 0805 package. MH2029-301Y is rated for 1A with 200mOhm DCR and supplied in Tape & Reel. MU2029-301Y is rated for 500mA with 300mOhm DCR and supplied in Cut Tape & Digi-Reel. Selection depends on current requirements and packaging preference.

Q: Are parametric equivalents from other manufacturers fully compatible? A: Parametric equivalents from TE Connectivity, Fair-Rite, Würth Elektronik, and Pulse Electronics meet the core electrical specifications (300 Ohms @ 100 MHz, 0805 package, -55°C to 125°C). All are ROHS3 compliant and active in production. Verify current rating and DCR requirements for your specific application.

Q: Why is 2508053017Z0 preferred over 2508053017Y0? A: 2508053017Z0 matches the original PMC0805-301 current rating of 200mA exactly, while 2508053017Y0 is rated for 300mA. Both have identical impedance and DCR specifications. Choose 2508053017Z0 for direct current rating alignment.

Q: What packaging options are available? A: Bourns MH2029-301Y is supplied in Tape & Reel (TR). Bourns MU2029-301Y is supplied in Cut Tape (CT) & Digi-Reel. TE Connectivity 2176486-4 is supplied in Cut Tape. Fair-Rite 2508053017Y0 and 2508053017Z0 are supplied in Tape & Reel. Würth Elektronik 742792035 is supplied in Tape & Reel. Pulse Electronics BBBK00201209301Y00 is supplied in Tape & Reel. Select based on assembly line requirements.

Q: Is RoHS compliance mandatory for substitution? A: The PMC0805-301 is RoHS non-compliant. All recommended substitutes are ROHS3 compliant. For new designs and updated manufacturing, ROHS3 compliance is required. Existing inventory of PMC0805-301 may be used only where RoHS exemptions apply.

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