CIC21P331NE Equivalent & Substitute Parts

Part Overview

The CIC21P331NE is a 330 Ohm ferrite bead manufactured by Samsung Electro-Mechanics, designed for power line filtering applications in 0805 (2012 Metric) surface mount packages. This component operates at 100 MHz with a maximum current rating of 2A and DC resistance of 50mOhm. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	CIC21P331NE Value
Impedance @ 100 MHz	330 Ohms
Current Rating (Max)	2A
DC Resistance (Max)	50mOhm
Package / Case	0805 (2012 Metric)
Filter Type	Power Line
Number of Lines	1
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CIC21P331NE is determined by the following critical parameters:

Primary Matching Criteria:

Impedance @ 100 MHz: 330 Ohms (exact match required for frequency response characteristics)
Package / Case: 0805 (2012 Metric) (mandatory for PCB layout compatibility)
Number of Lines: 1 (single-line configuration)
Mounting Type: Surface Mount (assembly process compatibility)
Operating Temperature Range: -55°C ~ 125°C (environmental specification)

Secondary Compatibility Parameters:

Current Rating (Max): Minimum 2A (equal or higher acceptable)
DC Resistance (Max): 50mOhm (equal or lower acceptable)
Filter Type: Power Line (functional application category)
RoHS Status: ROHS3 Compliant (regulatory requirement)

Substitute parts are grouped into two categories:

Category A - Direct Impedance Match (330 Ohms @ 100 MHz): Parts with identical impedance specification, matching the original design intent for frequency response and filtering characteristics.

Category B - Near-Impedance Match (300-320 Ohms @ 100 MHz): Parts with impedance within ±10% of the original specification. These parts maintain functional compatibility in applications where impedance tolerance permits deviation, while offering improved current ratings or reduced DC resistance.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DC Resistance (Max)	Filter Type	Product Status	RoHS Status
CIC21P331NE	Samsung Electro-Mechanics	330 Ohms	2A	50mOhm	Power Line	Obsolete	ROHS3 Compliant
BBUP00201209331Y00	Pulse Electronics	330 Ohms	3A	50mOhm	Not specified	Active	ROHS3 Compliant
FBH201209T-331Y-S	Cal-Chip Electronics, Inc.	330 Ohms	3A	50mOhm	Power Line	Active	RoHS Compliant
MH2029-331T	Bourns Inc.	330 Ohms	2.8A	40mOhm	Power, Signal Line	Active	ROHS3 Compliant
HFZ 2012PF-331T28	TAI-TECH Advanced Electronics Co., Ltd.	330 Ohms	2.8A	40mOhm	Power Line	Active	RoHS Compliant
2176487-1	TE Connectivity Passive Product	300 Ohms	3A	50mOhm	Signal Line	Active	ROHS3 Compliant
2508053017Y3	Fair-Rite Products Corp.	300 Ohms	3A	50mOhm	Signal Line	Active	ROHS3 Compliant
742792031	Würth Elektronik	300 Ohms	3A	50mOhm	Signal Line	Active	ROHS3 Compliant
BBUP00201209301Y00	Pulse Electronics	300 Ohms	3A	50mOhm	Power Line	Active	ROHS3 Compliant
FBH201209T-301Y-S	Cal-Chip Electronics, Inc.	300 Ohms	3A	50mOhm	Power Line	Active	RoHS Compliant
74279220321	Würth Elektronik	320 Ohms	2.5A	50mOhm	Not specified	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (330 Ohms @ 100 MHz):

For applications requiring exact impedance matching, the following active components provide direct substitution:

FBH201209T-331Y-S (Cal-Chip Electronics, Inc.): Maintains 330 Ohm impedance with increased current rating (3A vs. 2A) and identical DC resistance (50mOhm). Power Line filter type matches original application. Active product status with RoHS compliance ensures supply continuity and regulatory conformance.
BBUP00201209331Y00 (Pulse Electronics): Provides 330 Ohm impedance with 3A current rating and 50mOhm DC resistance. Active status supports long-term availability. ROHS3 compliance aligns with regulatory requirements.
MH2029-331T (Bourns Inc.): Delivers 330 Ohm impedance with improved DC resistance (40mOhm vs. 50mOhm) and 2.8A current rating. Supports both power and signal line applications. ROHS3 compliance and active status ensure reliability.
HFZ 2012PF-331T28 (TAI-TECH Advanced Electronics Co., Ltd.): Maintains 330 Ohm impedance with 2.8A current rating and 40mOhm DC resistance. Power Line filter type aligns with original specification. Active product status supports procurement.

Near-Impedance Substitution (300-320 Ohms @ 100 MHz):

For applications where impedance tolerance permits ±10% deviation, the following components offer enhanced electrical performance:

FBH201209T-301Y-S (Cal-Chip Electronics, Inc.): 300 Ohm impedance with 3A current rating and Power Line filter type. Reduced impedance by 10% with improved current capacity.
BBUP00201209301Y00 (Pulse Electronics): 300 Ohm impedance with 3A current rating and Power Line filter type. ROHS3 compliance and active status.
74279220321 (Würth Elektronik): 320 Ohm impedance with 2.5A current rating. Minimal impedance deviation (3%) with maintained DC resistance.

All recommended substitutes maintain 0805 (2012 Metric) package compatibility, surface mount mounting type, and -55°C ~ 125°C operating temperature range. Selection should be based on application-specific impedance tolerance requirements and current demand specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a 300 Ohm ferrite bead instead of the 330 Ohm CIC21P331NE?

A: Substitution with 300 Ohm impedance is permissible only if the application design tolerates ±10% impedance deviation. The 300 Ohm specification represents a 9% reduction from the original 330 Ohm value. This affects frequency response characteristics and filtering effectiveness. Verify circuit design specifications before substitution.

Q: What is the difference between Power Line and Signal Line filter types?

A: Filter type designation indicates the intended application category. Power Line ferrite beads are optimized for power distribution and supply filtering. Signal Line ferrite beads are designed for signal integrity and EMI suppression on data or control lines. The CIC21P331NE is specified as Power Line. Substitutes with Signal Line designation may exhibit different impedance characteristics across frequency ranges.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts listed maintain the 0805 (2012 Metric) package specification, ensuring PCB layout compatibility. However, packaging delivery formats vary: some are supplied in Cut Tape (CT), others in Tape & Reel (TR), and some in Digi-Reel format. Verify packaging format compatibility with assembly equipment and procurement requirements.

Q: What does ROHS3 compliance mean for this component?

A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive 3, which restricts the use of specific hazardous materials in electrical and electronic equipment. All listed substitute parts meet ROHS3 or equivalent RoHS standards, ensuring regulatory compliance for EU and similar markets.

Q: Can I substitute a ferrite bead with higher current rating?

A: Yes. Ferrite beads with current ratings equal to or higher than the original specification (2A) are acceptable substitutes. Higher current ratings indicate improved thermal performance and reduced saturation risk. The MH2029-331T (2.8A) and FBH201209T-331Y-S (3A) provide enhanced current handling compared to the original 2A specification.

Q: What is DC Resistance (DCR) and why does it matter?

A: DC Resistance is the resistive component of the ferrite bead impedance at zero frequency. Lower DCR values reduce power dissipation and heat generation in the component. The original CIC21P331NE specifies 50mOhm maximum. Substitutes with 40mOhm DCR (MH2029-331T, HFZ 2012PF-331T28) offer improved thermal efficiency.

Q: How do I verify mechanical compatibility with my PCB?

A: All substitute parts maintain identical package dimensions: 0805 (2012 Metric) with 0.079" L x 0.049" W footprint. Maximum height specifications range from 0.041" to 0.043", all within standard 0805 component clearance. Verify PCB pad layout matches 0805 standard specifications.

Q: What is Moisture Sensitivity Level (MSL)?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed substitute parts specify MSL 1, eliminating moisture-related reliability concerns.

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