PMC0805-101 Ferrite Bead 100 Ohm 0805 Equivalent & Substitute Parts

Part Overview

The PMC0805-101 is a single-line ferrite bead manufactured by Bourns Inc. in the 0805 (2012 Metric) surface mount package. This component provides 100 Ohms impedance at 100 MHz with a maximum current rating of 400mA and 400mOhm DC resistance. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design and procurement activities. Ferrite beads in this package and impedance range are widely available from multiple manufacturers, enabling straightforward component substitution based on electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Impedance @ 100 MHz	100 Ohms
Current Rating (Max)	400mA
DC Resistance (Max)	400mOhm
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
Number of Lines	1
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the PMC0805-101 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Impedance @ 100 MHz: 100 Ohms (direct substitutes) or within ±20% tolerance (parametric equivalents)
Package / Case: 0805 (2012 Metric)
Mounting Type: Surface Mount
Number of Lines: 1
Operating Temperature Range: -55°C ~ 125°C minimum

Performance Parameters:

Current Rating (Max): Must equal or exceed 400mA
DC Resistance (Max): Lower values are acceptable; higher values require application verification

Compliance Parameters:

RoHS Status: ROHS3 Compliant preferred for new designs
Moisture Sensitivity Level: 1 (Unlimited) standard for this package class

Substitute parts are categorized as direct manufacturer equivalents (same impedance value, same manufacturer) or parametric equivalents (impedance within tolerance range, alternative manufacturers). All listed substitutes maintain the 0805 package footprint and surface mount compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DC Resistance (Max)	Product Status	RoHS Status	Height (Max)
PMC0805-101	Bourns Inc.	100 Ohms	400mA	400mOhm	Obsolete	RoHS non-compliant	0.035" (0.90mm)
MG2029-101Y	Bourns Inc.	100 Ohms	400mA	200mOhm	Active	ROHS3 Compliant	0.043" (1.10mm)
MH2029-101Y	Bourns Inc.	100 Ohms	2A	100mOhm	Active	ROHS3 Compliant	0.043" (1.10mm)
74279202	Würth Elektronik	120 Ohms	500mA	100mOhm	Active	ROHS3 Compliant	0.043" (1.10mm)
742792062	Würth Elektronik	80 Ohms	500mA	200mOhm	Active	ROHS3 Compliant	0.043" (1.10mm)
ACML-0805-121-T	Abracon LLC	120 Ohms	800mA	150mOhm	Active	ROHS3 Compliant	0.041" (1.05mm)
BBBK00201209800Y00	Pulse Electronics	80 Ohms	500mA	150mOhm	Active	ROHS3 Compliant	0.043" (1.10mm)
BBGK00201209121Y00	Pulse Electronics	120 Ohms	800mA	150mOhm	Active	ROHS3 Compliant	0.043" (1.10mm)
BLM21AG121SN1D	Murata Electronics	120 Ohms	800mA	100mOhm	Active	ROHS3 Compliant	0.041" (1.05mm)
BLM21BB121SN1D	Murata Electronics	120 Ohms	600mA	190mOhm	Active	ROHS3 Compliant	0.041" (1.05mm)
EMI0805R-120	API Delevan Inc.	120 Ohms	500mA	150mOhm	Active	ROHS3 Compliant	0.043" (1.10mm)

Engineering Selection Recommendations

Direct Manufacturer Substitutes (Bourns Inc.):

MG2029-101Y and MH2029-101Y are active production parts from Bourns Inc. with identical 100 Ohm impedance at 100 MHz. Both are ROHS3 compliant and suitable for new designs. MG2029-101Y maintains the 400mA current rating with improved 200mOhm DC resistance. MH2029-101Y provides enhanced performance with 2A current rating and 100mOhm DC resistance, suitable for applications requiring lower insertion loss.

Parametric Equivalents (±20% Impedance Tolerance):

Parts with 120 Ohm impedance (ACML-0805-121-T, BBGK00201209121Y00, BLM21AG121SN1D, BLM21BB121SN1D, EMI0805R-120) and 80 Ohm impedance (74279202, 742792062, BBBK00201209800Y00) are parametric equivalents. All are ROHS3 compliant and active production parts. Selection among these depends on current rating requirements and DC resistance specifications for the specific application.

All substitute parts maintain the 0805 (2012 Metric) surface mount package and -55°C to 125°C operating temperature range. Height variations (0.041" to 0.043") are within typical PCB assembly tolerances for 0805 components.

Frequently Asked Questions (FAQ)

Q: Can MG2029-101Y directly replace PMC0805-101?

A: Yes. MG2029-101Y is a direct electrical equivalent with identical 100 Ohm impedance at 100 MHz and 400mA current rating. It is ROHS3 compliant and in active production. The 200mOhm DC resistance is lower than the original 400mOhm, which is advantageous for reducing insertion loss.

Q: What is the difference between direct substitutes and parametric equivalents?

A: Direct substitutes (MG2029-101Y, MH2029-101Y) have identical 100 Ohm impedance. Parametric equivalents have impedance values within ±20% tolerance (80 Ohms or 120 Ohms) and are from alternative manufacturers. Parametric equivalents require application verification to confirm impedance tolerance is acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. The original PMC0805-101 is RoHS non-compliant, making compliant substitutes necessary for new designs and regulated applications.

Q: Do height differences affect PCB assembly compatibility?

A: The PMC0805-101 has a maximum height of 0.035" (0.90mm). Substitute parts range from 0.041" to 0.043" (1.05mm to 1.10mm). These height variations are within standard 0805 package tolerances and do not affect PCB assembly compatibility or reflow soldering processes.

Q: Which substitute offers the best performance for low-insertion-loss applications?

A: MH2029-101Y provides the lowest DC resistance at 100mOhm with the highest current rating at 2A. BLM21AG121SN1D and 74279202 also offer 100mOhm DC resistance. Selection depends on whether 100 Ohm impedance is required or if 120 Ohm parametric equivalents are acceptable.

Q: Can I use an 80 Ohm ferrite bead instead of 100 Ohm?

A: 80 Ohm parts (742792062, BBBK00201209800Y00) are parametric equivalents with lower impedance. Substitution is application-dependent and requires verification that the reduced impedance meets EMI filtering requirements.

Q: What packaging formats are available for substitute parts?

A: MG2029-101Y and MH2029-101Y are supplied in Tape & Reel (TR) format. Murata parts (BLM21AG121SN1D, BLM21BB121SN1D) are available in Cut Tape (CT) & Digi-Reel® format. Würth Elektronik, Abracon LLC, Pulse Electronics, and API Delevan parts are supplied in Tape & Reel format. Packaging format does not affect electrical or mechanical compatibility.

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