CIC31P601NE Equivalent & Substitute Parts Reference

Part Overview

The CIC31P601NE is a 1206 (3216 Metric) surface mount ferrite bead manufactured by Samsung Electro-Mechanics, designed for power line filtering applications. This component provides 600 Ohms impedance at 100 MHz with a maximum current rating of 1.5A and 70mOhm DC resistance. 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	Value
Impedance @ Frequency	600 Ohms @ 100 MHz
Current Rating (Max)	1.5A
DC Resistance (DCR) (Max)	70mOhm
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
Number of Lines	1
Filter Type	Power Line
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CIC31P601NE is determined by the following critical parameters:

Primary Matching Criteria:

Impedance @ 100 MHz: 600 Ohms (exact match required for frequency response characteristics)
Package / Case: 1206 (3216 Metric) (physical and electrical footprint compatibility)
Number of Lines: 1 (single-line configuration)
Mounting Type: Surface Mount (assembly process compatibility)

Secondary Compatibility Parameters:

Current Rating (Max): Substitute must equal or exceed 1.5A
DC Resistance (DCR): Substitute must not exceed 70mOhm to maintain thermal performance
Operating Temperature: Substitute must support -55°C ~ 125°C range
RoHS Status: ROHS3 Compliant (regulatory requirement)

Substitute parts are classified into two categories:

Direct Substitutes: Parts matching all primary criteria with identical impedance (600 Ohms @ 100 MHz) and compatible electrical specifications.

Parametric Equivalents: Parts with 500 Ohms impedance at 100 MHz or enhanced current ratings (2.5A or higher) that provide functional alternatives where impedance tolerance or current margin is acceptable within circuit design parameters.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Operating Temperature	Product Status	Packaging
CIC31P601NE	Samsung Electro-Mechanics	600 Ohms	1.5A	70mOhm	-55°C ~ 125°C	Obsolete	Cut Tape (CT) & Digi-Reel®
MI1206K601R-10	Laird-Signal Integrity Products	600 Ohms	1.5A	80mOhm	-40°C ~ 125°C	Active	Cut Tape (CT) & Digi-Reel®
742792116	Würth Elektronik	500 Ohms	2.5A	60mOhm	-55°C ~ 125°C	Active	Cut Tape (CT) & Digi-Reel®
742792118	Würth Elektronik	600 Ohms	2.5A	70mOhm	-55°C ~ 125°C	Active	Tape & Reel (TR)
74279221601	Würth Elektronik	600 Ohms	2.5A	50mOhm	-55°C ~ 125°C	Active	Tape & Reel (TR)
BLM31KN601SN1L	Murata Electronics	600 Ohms	2.9A	38mOhm	-55°C ~ 125°C	Active	Tape & Reel (TR)
FBH321611T-601Y-S-H	Cal-Chip Electronics, Inc.	600 Ohms	2.5A	70mOhm	-55°C ~ 125°C	Active	Tape & Reel (TR)
HFZ 3216PF-601T29	TAI-TECH Advanced Electronics Co., Ltd.	600 Ohms	2.9A	38mOhm	-55°C ~ 125°C	Active	Tape & Reel (TR)
ILHB1206ER501V	Vishay Dale	500 Ohms	2.5A	60mOhm	-55°C ~ 125°C	Active	Cut Tape (CT) & Digi-Reel®
WLBD3216HCU601PH	Walsin Technology Corporation	600 Ohms	2.5A	70mOhm	-55°C ~ 125°C	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Replacement Priority (600 Ohms @ 100 MHz, 1.5A minimum):

The MI1206K601R-10 from Laird-Signal Integrity Products serves as the primary direct substitute. This part maintains 600 Ohms impedance and 1.5A current rating with active product status. The operating temperature range is -40°C ~ 125°C, which covers the upper portion of the CIC31P601NE specification. DCR specification of 80mOhm exceeds the original 70mOhm maximum by 10mOhm, representing acceptable thermal margin variance for power line applications.

Enhanced Performance Alternatives (600 Ohms @ 100 MHz, >1.5A):

Parts with elevated current ratings and reduced DCR provide superior thermal performance:

742792118 (Würth Elektronik WE-CBF series): 2.5A rating, 70mOhm DCR, full temperature range, Tape & Reel packaging
74279221601 (Würth Elektronik WE-MPSB series): 2.5A rating, 50mOhm DCR, full temperature range, Tape & Reel packaging
BLM31KN601SN1L (Murata Electronics BLM series): 2.9A rating, 38mOhm DCR, full temperature range, Tape & Reel packaging
FBH321611T-601Y-S-H (Cal-Chip Electronics FBH series): 2.5A rating, 70mOhm DCR, full temperature range, Tape & Reel packaging
HFZ 3216PF-601T29 (TAI-TECH HFZ3216PF series): 2.9A rating, 38mOhm DCR, full temperature range, Tape & Reel packaging
WLBD3216HCU601PH (Walsin Technology): 2.5A rating, 70mOhm DCR, full temperature range, Tape & Reel packaging

Parametric Alternatives (500 Ohms @ 100 MHz):

For applications where 500 Ohms impedance is acceptable:

742792116 (Würth Elektronik WE-CBF series): 2.5A rating, 60mOhm DCR, full temperature range
ILHB1206ER501V (Vishay Dale ILHB series): 2.5A rating, 60mOhm DCR, full temperature range

All substitute parts maintain ROHS3 compliance and 1206 (3216 Metric) package compatibility. Selection between Cut Tape and Tape & Reel packaging depends on assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can MI1206K601R-10 replace CIC31P601NE in all applications?

A: MI1206K601R-10 is electrically compatible as a direct substitute, maintaining 600 Ohms impedance and 1.5A current rating. The operating temperature range is -40°C ~ 125°C, which is narrower at the lower end (-40°C vs. -55°C). Verify that your application does not require operation below -40°C. DCR specification of 80mOhm is 10mOhm higher than the original; this is acceptable for power line filtering where thermal margin is typically available.

Q: What is the difference between 600 Ohms and 500 Ohms impedance substitutes?

A: Impedance determines the frequency response and attenuation characteristics of the ferrite bead. A 600 Ohms bead provides greater impedance at 100 MHz compared to a 500 Ohms bead. Selection of 500 Ohms alternatives (742792116, ILHB1206ER501V) is valid only if circuit design analysis confirms that reduced impedance meets filtering requirements. These parts offer lower DCR (60mOhm) and higher current ratings (2.5A).

Q: Why do some substitutes have higher current ratings (2.5A or 2.9A)?

A: Higher current ratings indicate the component can handle greater current without exceeding thermal limits. These parts are suitable for applications requiring the original 1.5A specification and provide additional design margin. Reduced DCR values in higher-rated parts (38mOhm to 60mOhm) contribute to lower power dissipation and improved thermal performance.

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

A: DCR represents the resistive component of the ferrite bead at DC and low frequencies. Lower DCR reduces power dissipation and heat generation. The CIC31P601NE specifies 70mOhm maximum. Substitutes with equal or lower DCR (50mOhm to 70mOhm) maintain or improve thermal characteristics. Higher DCR values (such as MI1206K601R-10 at 80mOhm) are acceptable if thermal analysis confirms adequate margin.

Q: Are Cut Tape and Tape & Reel packaging interchangeable?

A: Both packaging formats contain identical components in 1206 (3216 Metric) surface mount configuration. Cut Tape (CT) & Digi-Reel® packaging is suitable for lower-volume assembly or manual placement. Tape & Reel (TR) packaging is optimized for high-speed automated assembly. Selection depends on production equipment and volume requirements, not electrical performance.

Q: Can I use BLM31KN601SN1L or HFZ 3216PF-601T29 as direct replacements?

A: Yes. Both parts maintain 600 Ohms impedance at 100 MHz with enhanced specifications: 2.9A current rating and 38mOhm DCR. These represent superior performance alternatives to the CIC31P601NE. The full operating temperature range (-55°C ~ 125°C) matches the original specification. Height specification of 1.80mm for BLM31KN601SN1L is 0.50mm greater than the original; verify PCB clearance if space constraints exist.

Q: What compliance certifications apply to all substitute parts?

A: All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory requirements of the CIC31P601NE. ECCN classification is EAR99 for all parts, indicating standard commercial electronic components.

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

A: Selection criteria are: (1) Impedance requirement: 600 Ohms for direct replacement, or 500 Ohms if circuit design permits; (2) Current requirement: minimum 1.5A, with higher ratings providing thermal margin; (3) Operating temperature: verify the range covers your application; (4) Packaging format: Cut Tape for low-volume or manual assembly, Tape & Reel for automated production; (5) Availability: confirm inventory status with supplier.

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