ACML-0805-151-T Ferrite Bead Equivalent & Substitute Parts

Part Overview

The ACML-0805-151-T is a 150 Ohm ferrite bead manufactured by Abracon LLC in 0805 (2012 Metric) surface mount package. This component is designed for electromagnetic interference (EMI) suppression in single-line applications with a maximum current rating of 800mA and operating temperature range of -55°C to 125°C. The part is currently Active in product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design flexibility allows for parametric variations within acceptable operating ranges.

Key Parameters

Parameter	Value
Impedance @ Frequency	150 Ohms @ 100 MHz
Package / Case	0805 (2012 Metric)
Current Rating (Max)	800mA
DC Resistance (DCR) (Max)	150mOhm
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Number of Lines	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ACML-0805-151-T are classified based on the following substitution criteria:

Direct Impedance Match (150 Ohms @ 100 MHz):

BLM21AG151SN1D (Murata Electronics)
FB201209T-151Y-S-1 (Cal-Chip Electronics, Inc.)

These parts maintain identical impedance specification at 100 MHz, ensuring equivalent EMI suppression performance in the primary application frequency range.

Parametric Equivalent (120 Ohms @ 100 MHz):

ACML-0805-121-T (Abracon LLC)
BLM21AG121SN1D (Murata Electronics)
FB201209T-121Y-S-1 (Cal-Chip Electronics, Inc.)
MMZ2012R121AT000 (TDK Corporation)
MMZ2012S121AT000 (TDK Corporation)
MMZ2012Y121BT000 (TDK Corporation)
Z0805C121ASMST (KEMET)

These parts operate at 120 Ohms impedance, representing a 20 Ohm reduction from the primary specification. All maintain identical package, current rating, operating temperature range, and mounting characteristics. Substitution is valid when circuit design permits impedance variation within this tolerance band.

Common Substitution Parameters Across All Parts:

Package / Case: 0805 (2012 Metric)
Current Rating (Max): 800mA
Operating Temperature: -55°C ~ 125°C
Mounting Type: Surface Mount
Number of Lines: 1
RoHS Status: ROHS3 Compliant or RoHS Compliant
Moisture Sensitivity Level: 1 (Unlimited)
Size / Dimension: 0.079" L x 0.049" W (2.00mm x 1.25mm)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	DCR (Max)	Current Rating	Product Status	Packaging
ACML-0805-151-T	Abracon LLC	150 Ohms	150mOhm	800mA	Active	Tape & Reel (TR)
BLM21AG151SN1D	Murata Electronics	150 Ohms	100mOhm	800mA	Active	Cut Tape (CT) & Digi-Reel®
FB201209T-151Y-S-1	Cal-Chip Electronics, Inc.	150 Ohms	100mOhm	800mA	Active	Tape & Reel (TR)
ACML-0805-121-T	Abracon LLC	120 Ohms	150mOhm	800mA	Active	Tape & Reel (TR)
BLM21AG121SN1D	Murata Electronics	120 Ohms	100mOhm	800mA	Active	Cut Tape (CT) & Digi-Reel®
FB201209T-121Y-S-1	Cal-Chip Electronics, Inc.	120 Ohms	150mOhm	800mA	Active	Tape & Reel (TR)
MMZ2012R121AT000	TDK Corporation	120 Ohms	120mOhm	800mA	Last Time Buy	Cut Tape (CT)
MMZ2012S121AT000	TDK Corporation	120 Ohms	150mOhm	800mA	Last Time Buy	Cut Tape (CT)
MMZ2012Y121BT000	TDK Corporation	120 Ohms	120mOhm	800mA	Last Time Buy	Cut Tape (CT)
Z0805C121ASMST	KEMET	120 Ohms	150mOhm	800mA	Obsolete	Cut Tape (CT)

Engineering Selection Recommendations

For Direct Replacement (150 Ohms @ 100 MHz):

BLM21AG151SN1D and FB201209T-151Y-S-1 are suitable direct replacements maintaining identical impedance specification. Both parts are Active in product status with ROHS3 or RoHS compliance. BLM21AG151SN1D offers lower DC resistance (100mOhm vs. 150mOhm), providing reduced power dissipation. FB201209T-151Y-S-1 maintains equivalent DC resistance to the primary part.

For Parametric Substitution (120 Ohms @ 100 MHz):

ACML-0805-121-T, BLM21AG121SN1D, and FB201209T-121Y-S-1 are Active products suitable for applications where 20 Ohm impedance reduction is acceptable. These parts maintain all mechanical and thermal specifications identical to ACML-0805-151-T.

MMZ2012R121AT000, MMZ2012S121AT000, and MMZ2012Y121BT000 are classified as Last Time Buy, indicating discontinued production with limited inventory availability. These parts remain functionally equivalent but should be considered only when primary alternatives are unavailable.

Z0805C121ASMST is Obsolete and should not be selected for new designs or long-term production applications.

Frequently Asked Questions (FAQ)

Q: Can ACML-0805-121-T be used in place of ACML-0805-151-T?

A: Yes, if circuit design permits a 20 Ohm impedance reduction at 100 MHz. Both parts share identical package, current rating, operating temperature, and mounting specifications. Impedance variation must be evaluated against EMI suppression requirements in the specific application.

Q: What is the difference between BLM21AG151SN1D and FB201209T-151Y-S-1?

A: Both maintain 150 Ohms impedance at 100 MHz. BLM21AG151SN1D has lower DC resistance (100mOhm vs. 100mOhm) and uses Digi-Reel® packaging. FB201209T-151Y-S-1 uses standard Tape & Reel packaging. Electrical performance is equivalent; packaging format differs based on assembly requirements.

Q: Why are TDK MMZ parts listed as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. Existing inventory is available but will not be replenished. These parts remain electrically and mechanically equivalent but should not be selected for designs requiring long-term component availability.

Q: Are all substitute parts ROHS3 compliant?

A: All Active and Last Time Buy parts listed are ROHS3 Compliant or RoHS Compliant. Z0805C121ASMST (Obsolete) is ROHS3 Compliant but should not be used in new designs.

Q: What is the significance of DC Resistance (DCR) variation among substitutes?

A: DC Resistance ranges from 100mOhm to 150mOhm across substitute parts. Lower DCR reduces power dissipation and heat generation at rated current (800mA). Selection should consider thermal management requirements in the application circuit.

Q: Can packaging format (Tape & Reel vs. Cut Tape) affect substitution?

A: Packaging format affects assembly process and handling but does not impact electrical or mechanical performance. Selection depends on manufacturing equipment compatibility and volume requirements. Both formats are suitable for surface mount assembly.

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