MH3261-900Y Ferrite Bead 90 Ohm 1206 Equivalent & Substitute Parts

Part Overview

The MH3261-900Y is a 1206 surface mount ferrite bead manufactured by Bourns Inc., rated at 90 Ohms impedance at 100 MHz with a maximum current rating of 3A and 40mOhm DC resistance. This component is designed for power and signal line filtering applications across a temperature range of -55°C to 125°C. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement.

Key Parameters

Parameter	MH3261-900Y
Impedance @ 100 MHz	90 Ohms
Current Rating (Max)	3A
DC Resistance (Max)	40mOhm
Package / Case	1206 (3216 Metric)
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the MH3261-900Y is determined by the following critical parameters: package type (1206/3216 Metric), surface mount configuration, impedance value at 100 MHz, current rating capability, DC resistance, operating temperature range, and regulatory compliance (RoHS3). Substitute parts are grouped into two categories based on impedance matching:

Category 1: Direct Impedance Match (90 Ohms @ 100 MHz)

MI1206K900R-10 (Laird-Signal Integrity Products): Matches impedance specification but with reduced current rating (1.5A vs 3A) and higher DC resistance (80mOhm vs 40mOhm).

Category 2: Parametric Equivalents (80-100 Ohms @ 100 MHz)

Parts with 80 Ohm impedance: 742792115, 74279215, 742792150, BBPY00321611800Y00, BBUP00321611800Y00
Parts with 100 Ohm impedance: BBPY00321611101Y00, BBUP00321611101Y00, CZP2BPTTE101P, FBH321611T-101Y-S

These alternatives maintain the same package footprint and operating temperature range while offering variations in current handling and DC resistance characteristics suitable for different circuit requirements.

Parameter Comparison

Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DC Resistance (Max)	Operating Temperature	Product Status	RoHS Status
MH3261-900Y	Bourns Inc.	90 Ohms	3A	40mOhm	-55°C ~ 125°C	Obsolete	ROHS3 Compliant
MI1206K900R-10	Laird-Signal Integrity Products	90 Ohms	1.5A	80mOhm	-40°C ~ 125°C	Active	ROHS3 Compliant
742792115	Würth Elektronik	80 Ohms	4A	25mOhm	-55°C ~ 125°C	Obsolete	ROHS3 Compliant
74279215	Würth Elektronik	80 Ohms	3A	30mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
742792150	Würth Elektronik	80 Ohms	4A	20mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
BBPY00321611101Y00	Pulse Electronics	100 Ohms	3A	30mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
BBPY00321611800Y00	Pulse Electronics	80 Ohms	3A	25mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
BBUP00321611101Y00	Pulse Electronics	100 Ohms	6A	12mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
BBUP00321611800Y00	Pulse Electronics	80 Ohms	6A	12mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
CZP2BPTTE101P	KOA Speer Electronics, Inc.	100 Ohms	3A	30mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
FBH321611T-101Y-S	Cal-Chip Electronics, Inc.	100 Ohms	3A	40mOhm	-55°C ~ 125°C	Active	RoHS Compliant

Engineering Selection Recommendations

For direct replacement of the MH3261-900Y, MI1206K900R-10 provides the closest impedance match at 90 Ohms. However, this part operates at a reduced maximum current of 1.5A compared to the original 3A specification and exhibits higher DC resistance. This substitute is suitable only for applications where the lower current rating and higher resistance are acceptable.

For applications requiring the full 3A current capability with improved DC resistance characteristics, the Würth Elektronik 74279215 (80 Ohms, 3A, 30mOhm) is an active product offering equivalent performance with lower insertion loss. The Pulse Electronics BBUP00321611800Y00 (80 Ohms, 6A, 12mOhm) provides superior current handling and minimal DC resistance, suitable for demanding power line applications.

For 100 Ohm impedance requirements, the FBH321611T-101Y-S (Cal-Chip Electronics) matches the original DC resistance specification of 40mOhm while maintaining 3A current rating and active product status. The Pulse Electronics BBUP00321611101Y00 offers enhanced current capacity (6A) with significantly reduced DC resistance (12mOhm) for high-performance filtering.

All recommended substitutes maintain ROHS3 compliance, 1206 package footprint, and -55°C to 125°C operating temperature range. Selection should be based on specific circuit impedance requirements and current handling needs.

Frequently Asked Questions (FAQ)

Q: Can MI1206K900R-10 be used as a direct replacement for MH3261-900Y?

A: MI1206K900R-10 matches the 90 Ohm impedance specification but has a maximum current rating of 1.5A versus the original 3A. It is suitable only if your circuit operates below 1.5A. Additionally, the operating temperature minimum is -40°C instead of -55°C, which may be a limitation in extreme cold environments.

Q: What is the difference between 80 Ohm and 100 Ohm ferrite beads for this application?

A: Impedance value determines the frequency-dependent attenuation characteristics. An 80 Ohm bead provides slightly less impedance than the original 90 Ohm specification, while a 100 Ohm bead provides slightly more. Selection depends on your circuit's filtering requirements at the target frequency. Both are compatible with the 1206 package footprint.

Q: Why do some substitutes have lower DC resistance than the original?

A: DC resistance (DCR) represents the resistive losses in the ferrite material. Lower DCR values (such as 12mOhm in BBUP series) indicate improved efficiency and reduced power dissipation, particularly beneficial in high-current applications. Higher DCR values (40mOhm) are acceptable in low-current signal filtering applications.

Q: Are all listed substitutes RoHS3 compliant?

A: All substitutes listed are RoHS3 compliant except FBH321611T-101Y-S, which is RoHS compliant. Verify your procurement requirements for regulatory compliance before selection.

Q: Can I use a 6A-rated ferrite bead in place of a 3A-rated component?

A: Yes. A higher current rating indicates the component can safely handle greater current without exceeding thermal limits. Parts such as BBUP00321611800Y00 (6A) and BBUP00321611101Y00 (6A) are suitable for applications originally designed for 3A components, provided impedance and package requirements are met.

Q: What is the significance of the 1206 (3216 Metric) package designation?

A: This indicates the physical footprint dimensions: 0.126" L × 0.063" W (3.20mm × 1.60mm). All listed substitutes use this identical package, ensuring direct PCB footprint compatibility without layout modifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message