Z0201C241ASMST Ferrite Bead 240 OHM 0201 Equivalent & Substitute Parts

Part Overview

The Z0201C241ASMST is a single-line ferrite bead manufactured by KEMET, rated at 240 Ohms impedance at 100 MHz with a maximum current rating of 200mA. This component is packaged in 0201 (0603 Metric) surface mount format and operates across the temperature range of -55°C to 125°C. The part is classified as obsolete, making identification of active equivalent and substitute components necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Impedance @ Frequency	240 Ohms @ 100 MHz
Current Rating (Max)	200mA
DC Resistance (DCR) (Max)	800mOhm
Package / Case	0201 (0603 Metric)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
Filter Type	Signal Line
Number of Lines	1
Height (Max)	0.013" (0.33mm)
Size / Dimension	0.024" L x 0.012" W (0.60mm x 0.30mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the Z0201C241ASMST is determined by the following critical parameters:

Primary Matching Criteria:

Impedance @ 100 MHz: 240 Ohms (exact match required)
Package / Case: 0201 (0603 Metric) (exact match required)
Number of Lines: 1 (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Parameters:

Current Rating (Max): 200mA minimum (equal or higher acceptable)
DC Resistance (DCR) (Max): 800mOhm maximum (equal or lower acceptable)
Filter Type: Signal Line (primary classification; Power/Signal Line variants acceptable for signal line applications)
RoHS Status: ROHS3 Compliant (required for regulatory compliance)
Moisture Sensitivity Level: 1 (Unlimited) (required for handling compatibility)

Substitute parts are grouped into two categories: Direct Equivalents (matching all primary and secondary parameters) and Parametric Equivalents (matching all primary parameters with variations in current rating or DCR that remain within acceptable operational limits).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Filter Type	Product Status	Packaging
Z0201C241ASMST	KEMET	240 Ohms	200mA	800mOhm	Signal Line	Obsolete	Cut Tape (CT) & Digi-Reel®
MMZ0603A241ET000	TDK Corporation	240 Ohms	200mA	860mOhm	Signal Line	Active	Tape & Reel (TR)
742692004	Würth Elektronik	240 Ohms	200mA	750mOhm	Power, Signal Line	Active	Tape & Reel (TR)
BBPY00060303241Y00	Pulse Electronics	240 Ohms	350mA	400mOhm	Power Line	Active	Tape & Reel (TR)
BBSJ00060303241Y00	Pulse Electronics	240 Ohms	220mA	800mOhm	Signal Line	Active	Tape & Reel (TR)
BBSY00060303241Y00	Pulse Electronics	240 Ohms	200mA	800mOhm	Signal Line	Active	Tape & Reel (TR)
BLM03AG241SN1D	Murata Electronics	240 Ohms	200mA	800mOhm	—	Active	Cut Tape (CT) & Digi-Reel®
BLM03AX241SN1D	Murata Electronics	240 Ohms	350mA	380mOhm	—	Active	Cut Tape (CT) & Digi-Reel®
BLM03BD241SN1D	Murata Electronics	240 Ohms	200mA	800mOhm	Signal Line	Active	Tape & Reel (TR)
BMC1HY0220AN	TE Connectivity Passive Product	220 Ohms	200mA	750mOhm	Signal Line	Active	Cut Tape (CT)
CIM03U241NC	Samsung Electro-Mechanics	240 Ohms	200mA	750mOhm	—	Obsolete	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

The following parts provide direct functional equivalence to the Z0201C241ASMST with active product status and full compliance certifications:

BBSY00060303241Y00 (Pulse Electronics): Matches all electrical parameters and filter type classification. Active status with ROHS3 compliance and MSL 1 rating. Available in Tape & Reel packaging.
BLM03BD241SN1D (Murata Electronics): Matches all electrical parameters and signal line filter type. Active status with ROHS3 compliance and MSL 1 rating. Available in Tape & Reel packaging with high inventory availability.
BLM03AG241SN1D (Murata Electronics): Matches all electrical parameters with identical DCR specification. Active status with ROHS3 compliance and MSL 1 rating. Available in Cut Tape & Digi-Reel packaging, compatible with original packaging format.

Parametric Equivalents (Secondary Substitutes):

The following parts meet all primary matching criteria with variations in current rating or DCR that remain within acceptable operational limits:

MMZ0603A241ET000 (TDK Corporation): Impedance and current rating match; DCR is 860mOhm (60mOhm higher). Active status with ROHS3 compliance. Suitable for applications where DCR tolerance permits.
742692004 (Würth Elektronik): Impedance and current rating match; DCR is 750mOhm (50mOhm lower). Active status with ROHS3 compliance. Classified as Power/Signal Line, suitable for signal line applications.
BLM03AX241SN1D (Murata Electronics): Impedance matches; current rating is 350mA (150mA higher) with DCR of 380mOhm (420mOhm lower). Active status with ROHS3 compliance. Suitable for applications requiring higher current capacity.
BBSJ00060303241Y00 (Pulse Electronics): Impedance and DCR match; current rating is 220mA (20mA higher). Active status with ROHS3 compliance. Suitable for applications with slightly elevated current requirements.

Not Recommended:

BMC1HY0220AN (TE Connectivity): Impedance is 220 Ohms, not 240 Ohms. Does not meet primary matching criteria.
CIM03U241NC (Samsung Electro-Mechanics): Obsolete product status. Height specification differs (0.024" vs. 0.013"). Not suitable for replacement.
BBPY00060303241Y00 (Pulse Electronics): Classified as Power Line filter type, not Signal Line. Current rating is 350mA and DCR is 400mOhm, representing significant parameter deviation. Use only if power line filtering is required.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher current rating than the original Z0201C241ASMST?

A: Yes. A higher current rating indicates the substitute part can handle equal or greater current without exceeding its thermal or electrical limits. Parts such as BLM03AX241SN1D (350mA) and BBPY00060303241Y00 (350mA) are suitable for applications where the original 200mA rating is sufficient, as they provide additional margin.

Q: What is the significance of DCR (DC Resistance) in ferrite bead selection?

A: DCR represents the resistive loss of the ferrite bead at DC and low frequencies. Lower DCR values result in less power dissipation and heat generation. The Z0201C241ASMST specifies 800mOhm maximum. Substitutes with equal or lower DCR (such as 742692004 at 750mOhm or BLM03AX241SN1D at 380mOhm) are acceptable and may provide improved thermal performance.

Q: Are packaging format differences between Cut Tape and Tape & Reel significant?

A: Packaging format affects handling, storage, and automated assembly processes. Cut Tape & Digi-Reel packaging is suitable for manual or small-batch assembly. Tape & Reel packaging is optimized for high-volume automated pick-and-place assembly. Both formats are compatible with the same component specifications. Selection depends on manufacturing process requirements.

Q: Why is the BMC1HY0220AN part listed if it does not match the impedance specification?

A: BMC1HY0220AN is included in the comparison table for reference purposes only. Its 220 Ohms impedance does not meet the primary matching criterion of 240 Ohms @ 100 MHz. This part is not suitable as a substitute for the Z0201C241ASMST.

Q: What does "Filter Type: Signal Line" mean, and can I use a "Power Line" variant?

A: Filter Type indicates the intended application classification. Signal Line ferrite beads are optimized for signal integrity in data and control lines. Power Line variants are optimized for power supply filtering. A Power/Signal Line variant (such as 742692004) is acceptable for signal line applications. A Power Line-only variant (such as BBPY00060303241Y00) should be used only if power line filtering is the primary requirement.

Q: Is ROHS3 compliance mandatory for all substitute parts?

A: ROHS3 compliance is required for regulatory adherence in most markets. All recommended substitute parts listed in this document maintain ROHS3 compliance status, matching the original Z0201C241ASMST specification.

Q: Can I substitute an obsolete part (CIM03U241NC) if it has matching electrical parameters?

A: Obsolete parts present supply chain risk and are not recommended for new designs or ongoing production. Active status parts such as BLM03BD241SN1D, BBSY00060303241Y00, or BLM03AG241SN1D are preferred to ensure long-term availability and consistent manufacturing quality.

Q: What is Moisture Sensitivity Level (MSL) 1, and why does it matter?

A: MSL 1 indicates unlimited shelf life without moisture absorption concerns. This is the most favorable moisture sensitivity rating. All recommended substitute parts maintain MSL 1 status, ensuring compatibility with standard storage and handling procedures.

Q: How do I determine which substitute part is best for my application?

A: Selection depends on three factors: (1) electrical parameter requirements (impedance, current rating, DCR tolerance), (2) manufacturing process compatibility (packaging format), and (3) supply chain considerations (product status and inventory availability). For signal line applications with 200mA current requirements, BLM03BD241SN1D, BBSY00060303241Y00, or BLM03AG241SN1D provide direct equivalence. For applications requiring higher current capacity, BLM03AX241SN1D is suitable.

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