CIB21P330NE Ferrite Bead 33 Ohm 0805 Equivalent & Substitute Parts

Part Overview

The CIB21P330NE is a ferrite bead manufactured by Samsung Electro-Mechanics, rated at 33 Ohms impedance at 100 MHz in a 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 1.5A and DC resistance of 50mOhm. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	CIB21P330NE
Manufacturer	Samsung Electro-Mechanics
Product Status	Obsolete
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount
Number of Lines	1
Impedance @ Frequency	33 Ohms @ 100 MHz
Current Rating (Max)	1.5A
DC Resistance (DCR) (Max)	50mOhm
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CIB21P330NE is determined by the following critical parameters:

Mechanical Compatibility:

Package type: 0805 (2012 Metric)
Mounting type: Surface Mount
Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
Number of lines: 1

Electrical Compatibility:

Impedance range: 30–39 Ohms @ 100 MHz (within acceptable tolerance band for ferrite bead applications)
Current rating: Minimum 1.5A (substitute parts rated 1.5A or higher are acceptable)
DC resistance: Maximum 50mOhm (substitute parts at or below this value are acceptable)
Operating temperature: -55°C ~ 125°C

Compliance & Regulatory:

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts meeting all mechanical and electrical parameters within these ranges are functionally equivalent for the CIB21P330NE application.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Package	Operating Temperature	RoHS Status
CIB21P330NE	Samsung Electro-Mechanics	Obsolete	33 Ohms	1.5A	50mOhm	0805 (2012 Metric)	-55°C ~ 125°C	ROHS3 Compliant
2508053007Y3	Fair-Rite Products Corp.	Active	30 Ohms	3A	30mOhm	0805 (2012 Metric)	-55°C ~ 125°C	ROHS3 Compliant
74279206	Würth Elektronik	Active	30 Ohms	3A	25mOhm	0805 (2012 Metric)	-55°C ~ 125°C	ROHS3 Compliant
ACML-0805-310-T	Abracon LLC	Active	31 Ohms	1.5A	50mOhm	0805 (2012 Metric)	-55°C ~ 125°C	ROHS3 Compliant
ACML-0805-360-T	Abracon LLC	Active	36 Ohms	1.5A	50mOhm	0805 (2012 Metric)	-55°C ~ 125°C	ROHS3 Compliant
HCB10-390-RC	Allied Components International	Active	39 Ohms	3A	20mOhm	0805 (2012 Metric)	-55°C ~ 125°C	RoHS Compliant
MH2029-300Y	Bourns Inc.	Active	30 Ohms	3A	25mOhm	0805 (2012 Metric)	-55°C ~ 125°C	ROHS3 Compliant
MMZ2012R300AT000	TDK Corporation	Last Time Buy	30 Ohms	1.5A	50mOhm	0805 (2012 Metric)	-55°C ~ 125°C	ROHS3 Compliant
MMZ2012Y300BT000	TDK Corporation	Last Time Buy	30 Ohms	1.5A	50mOhm	0805 (2012 Metric)	-55°C ~ 125°C	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

ACML-0805-310-T (Abracon LLC) and MMZ2012R300AT000 (TDK Corporation) are the closest electrical and mechanical equivalents to the CIB21P330NE. Both parts maintain identical current ratings (1.5A), DC resistance (50mOhm), and impedance within 1 Ohm of the original specification. Both manufacturers hold active product status with ROHS3 compliance and unlimited moisture sensitivity rating.

Secondary Substitutes (Acceptable with Electrical Margin):

MH2029-300Y (Bourns Inc.), 2508053007Y3 (Fair-Rite Products Corp.), and 74279206 (Würth Elektronik) provide superior electrical performance with lower DC resistance (20–30mOhm) and higher current ratings (3A). These parts operate at 30 Ohms impedance, representing a 3 Ohm reduction from the original specification. All three maintain active product status and ROHS3 compliance. These substitutes are suitable for applications where improved thermal performance and current headroom are beneficial.

Marginal Substitutes (Impedance Tolerance Consideration):

ACML-0805-360-T (Abracon LLC) and HCB10-390-RC (Allied Components International) operate at impedance values of 36 and 39 Ohms respectively, representing deviations of +3 and +6 Ohms from the original 33 Ohm specification. These parts maintain mechanical compatibility and compliance certifications but introduce greater impedance variance. Selection of these parts requires confirmation that the application circuit tolerates the increased impedance value.

Avoid:

MMZ2012R300AT000 and MMZ2012Y300BT000 (both TDK Corporation) carry Last Time Buy status, indicating discontinued production. While electrically and mechanically compatible, procurement of these parts for new designs is not recommended due to limited future availability.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with lower impedance (30 Ohms instead of 33 Ohms)?

A: Yes. Ferrite beads with lower impedance values provide equivalent or superior EMI suppression performance in most applications. The 30 Ohm substitutes (MH2029-300Y, 2508053007Y3, 74279206, MMZ2012R300AT000, MMZ2012Y300BT000) are electrically compatible with the CIB21P330NE. Confirm that your circuit design does not require the specific 33 Ohm impedance value.

Q: What is the difference between a 1.5A and 3A rated ferrite bead?

A: The current rating indicates the maximum continuous current the ferrite bead can handle without exceeding temperature limits. Substitutes with 3A ratings (MH2029-300Y, 2508053007Y3, 74279206, HCB10-390-RC) provide greater thermal margin and are suitable for higher-current applications. If your circuit operates below 1.5A, both ratings are acceptable.

Q: Does DC resistance (DCR) affect my circuit performance?

A: DC resistance introduces a small voltage drop across the ferrite bead proportional to the current flowing through it. The CIB21P330NE specifies 50mOhm maximum DCR. Substitutes with lower DCR values (20–30mOhm) reduce power dissipation and heat generation. Substitutes with equal or higher DCR values maintain equivalent performance.

Q: Are all 0805 ferrite beads mechanically interchangeable?

A: Yes, all parts listed in this reference maintain the 0805 (2012 Metric) package designation with surface mount configuration. Physical dimensions are within 0.002" tolerance across all substitutes, ensuring PCB footprint compatibility. Height variations (1.05–1.10mm) do not affect assembly or functionality.

Q: What does "Last Time Buy" status mean?

A: Last Time Buy indicates the manufacturer has discontinued production and will no longer accept new orders after a specified date. Parts with this status (MMZ2012R300AT000, MMZ2012Y300BT000) should not be selected for new designs requiring long-term component availability.

Q: Is RoHS3 compliance required for my application?

A: RoHS3 compliance is mandatory for products sold in the European Union and many other markets. All substitute parts listed carry either ROHS3 Compliant or RoHS Compliant certification, meeting regulatory requirements. Verify your specific market requirements before final part selection.

Q: Can I substitute a part with higher impedance (36 or 39 Ohms)?

A: Higher impedance ferrite beads (ACML-0805-360-T at 36 Ohms, HCB10-390-RC at 39 Ohms) provide increased EMI attenuation but may alter circuit behavior if the original design depends on the 33 Ohm specification. Confirm that your application circuit tolerates impedance values above 33 Ohms before selecting these substitutes.

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