BMB2A0200BN3 Equivalent & Substitute Parts

Part Overview

The BMB2A0200BN3 is a ferrite bead manufactured by TE Connectivity Passive Product, designed for electromagnetic interference (EMI) suppression in surface mount applications. This component provides 200 Ohms of impedance at 100 MHz with a maximum current rating of 200mA and operates across the temperature range of -55°C to 125°C. The part is packaged in the 0805 (2012 Metric) form factor and is classified as obsolete. Due to its obsolete status, identifying equivalent and substitute ferrite beads with compatible electrical and mechanical specifications is necessary for design continuity and procurement planning.

Key Parameters

Parameter	Value
Impedance @ 100 MHz	200 Ohms
Current Rating (Max)	200mA
DC Resistance (Max)	500mOhm
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
Number of Lines	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Ferrite bead substitution is determined by the following critical parameters: impedance value at 100 MHz, current rating capacity, DC resistance, package form factor, and operating temperature range. The BMB2A0200BN3 operates at 200 Ohms impedance with a 200mA current limit. Substitute parts are grouped into two categories:

Direct Impedance Match (200 Ohms @ 100 MHz): Parts maintaining the exact 200 Ohm impedance specification, such as BLM21BB201SN1D from Murata Electronics. These parts provide identical frequency response characteristics and are suitable for direct replacement in applications where the original impedance specification is critical.

Parametric Equivalent (220 Ohms @ 100 MHz): Parts with slightly elevated impedance values of 220 Ohms, including BMB2A0220AN4, 2176486-3, 742792034, BBBK00201209221Y00, BLM21BD221SN1D, BLM21RK221SN1D, and ILBB0805ER221V. These parts operate within acceptable tolerance ranges for most EMI suppression applications and offer improved current handling or reduced DC resistance in many cases.

Higher Impedance Variants (240 Ohms @ 100 MHz): Parts such as 742792038 and Z0805C241CSMST with 240 Ohm impedance. These are suitable for applications where slightly higher impedance provides enhanced filtering characteristics.

All substitute parts maintain the 0805 (2012 Metric) package form factor, surface mount mounting type, and -55°C to 125°C operating temperature range. All listed substitutes are RoHS3 compliant with MSL rating of 1.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DC Resistance (Max)	Package / Case	Height (Max)	Operating Temperature	Product Status	RoHS Status
BMB2A0200BN3	TE Connectivity Passive Product	200 Ohms	200mA	500mOhm	0805 (2012 Metric)	0.043" (1.10mm)	-55°C ~ 125°C	Obsolete	ROHS3 Compliant
BLM21BB201SN1D	Murata Electronics	200 Ohms	500mA	260mOhm	0805 (2012 Metric)	0.041" (1.05mm)	-55°C ~ 125°C	Active	ROHS3 Compliant
BMB2A0220AN4	TE Connectivity Passive Product	220 Ohms	250mA	500mOhm	0805 (2012 Metric)	0.043" (1.10mm)	-55°C ~ 125°C	Obsolete	ROHS3 Compliant
2176486-3	TE Connectivity Passive Product	220 Ohms	300mA	250mOhm	0805 (2012 Metric)	0.043" (1.10mm)	-55°C ~ 125°C	Active	ROHS3 Compliant
742792034	Würth Elektronik	220 Ohms	300mA	300mOhm	0805 (2012 Metric)	0.043" (1.10mm)	-55°C ~ 125°C	Active	ROHS3 Compliant
BBBK00201209221Y00	Pulse Electronics	220 Ohms	300mA	300mOhm	0805 (2012 Metric)	0.043" (1.10mm)	-55°C ~ 125°C	Active	ROHS3 Compliant
BLM21BD221SN1D	Murata Electronics	220 Ohms	350mA	250mOhm	0805 (2012 Metric)	0.057" (1.45mm)	-55°C ~ 125°C	Active	ROHS3 Compliant
BLM21RK221SN1D	Murata Electronics	220 Ohms	200mA	200mOhm	0805 (2012 Metric)	0.041" (1.05mm)	-55°C ~ 125°C	Active	ROHS3 Compliant
ILBB0805ER221V	Vishay Dale	220 Ohms	200mA	200mOhm	0805 (2012 Metric)	0.043" (1.10mm)	-55°C ~ 125°C	Active	ROHS3 Compliant
742792038	Würth Elektronik	240 Ohms	200mA	400mOhm	0805 (2012 Metric)	0.043" (1.10mm)	-55°C ~ 125°C	Obsolete	ROHS3 Compliant
Z0805C241CSMST	KEMET	240 Ohms	300mA	350mOhm	0805 (2012 Metric)	0.041" (1.05mm)	-55°C ~ 125°C	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: BLM21BB201SN1D from Murata Electronics is the preferred substitute for direct impedance matching. This part maintains the exact 200 Ohm impedance specification at 100 MHz while offering superior electrical characteristics: 500mA current rating (2.5× the original), reduced DC resistance of 260mOhm, and active product status ensuring long-term availability. The part is RoHS3 compliant with MSL rating of 1 and REACH Unaffected status.

Secondary Recommendation for Active Inventory: 2176486-3 from TE Connectivity Passive Product provides a 220 Ohm impedance variant with active product status. This part offers 300mA current capacity and significantly reduced DC resistance of 250mOhm compared to the original 500mOhm specification. As an active product from the original manufacturer, it provides design continuity and supply chain stability.

Alternative for Matched Current Rating: BLM21RK221SN1D and ILBB0805ER221V both maintain the 200mA current rating of the original part while providing 220 Ohm impedance. Both are active products with superior DC resistance characteristics (200mOhm). These options are suitable for applications where current rating matching is a design constraint.

Higher Current Applications: For applications requiring increased current capacity, BLM21BD221SN1D offers 350mA rating with 220 Ohm impedance and 250mOhm DC resistance. This part is active and widely available.

All recommended substitutes maintain full compliance with RoHS3 and operate across the identical -55°C to 125°C temperature range. Package form factor remains 0805 (2012 Metric) for all substitutes, ensuring mechanical compatibility with existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can BLM21BB201SN1D be used as a direct replacement for BMB2A0200BN3?

A: Yes. BLM21BB201SN1D maintains the identical 200 Ohm impedance at 100 MHz and operates across the same -55°C to 125°C temperature range. Both parts use the 0805 (2012 Metric) package form factor. The substitute offers improved electrical performance with higher current rating (500mA vs. 200mA) and lower DC resistance (260mOhm vs. 500mOhm). The part is active and RoHS3 compliant.

Q: What is the difference between 200 Ohm and 220 Ohm impedance ferrite beads?

A: The impedance value determines the frequency response and filtering characteristics of the ferrite bead. A 220 Ohm bead provides slightly higher impedance at 100 MHz compared to the 200 Ohm specification. For most EMI suppression applications, this 10% difference is within acceptable tolerance ranges. The choice depends on the specific filtering requirements of the circuit. Applications requiring exact 200 Ohm impedance should use BLM21BB201SN1D.

Q: Are all substitute parts compatible with the original PCB layout?

A: All listed substitute parts use the 0805 (2012 Metric) package form factor and surface mount mounting type, ensuring mechanical compatibility with existing PCB designs. However, height variations exist: most parts have a maximum height of 0.043" (1.10mm), while BLM21BB201SN1D and BLM21RK221SN1D are 0.041" (1.05mm), and BLM21BD221SN1D is 0.057" (1.45mm). These height differences are typically negligible for standard PCB assembly processes.

Q: Why are some substitute parts listed as obsolete?

A: BMB2A0220AN4, 742792038, and Z0805C241CSMST are classified as obsolete products. While these parts may still be available from inventory, they are no longer in active production. For new designs or long-term supply chain planning, active products such as BLM21BB201SN1D, 2176486-3, 742792034, BBBK00201209221Y00, BLM21BD221SN1D, BLM21RK221SN1D, and ILBB0805ER221V are recommended.

Q: What does DC Resistance (DCR) mean in ferrite bead specifications?

A: DC Resistance is the ohmic resistance of the ferrite bead material at direct current. Lower DCR values result in less power dissipation and heat generation in the circuit. The original BMB2A0200BN3 has 500mOhm DCR. Many substitutes offer improved DCR values: BLM21BB201SN1D (260mOhm), 2176486-3 (250mOhm), BLM21RK221SN1D (200mOhm), and ILBB0805ER221V (200mOhm). Lower DCR is generally advantageous for high-current applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and carry MSL rating of 1 (Unlimited moisture sensitivity level), matching the compliance profile of the original BMB2A0200BN3.

Q: What is the significance of current rating differences among substitutes?

A: Current rating indicates the maximum continuous current the ferrite bead can handle without exceeding temperature limits. The original part is rated for 200mA. Substitutes range from 200mA to 500mA. For applications operating at or near the original 200mA specification, any substitute with equal or higher current rating is suitable. Higher current ratings provide design margin and reduce thermal stress on the component.

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