FB03YTYN101 Ferrite Bead 100 Ohm 0603 Equivalent & Substitute Parts

Part Overview

The FB03YTYN101 is a surface mount ferrite bead manufactured by Stackpole Electronics Inc., designed for electromagnetic interference (EMI) suppression in single-line signal applications. This 0603 (1608 Metric) package component operates at 100 Ohms impedance at 100 MHz with a maximum current rating of 400mA and DC resistance of 200mOhm. The part is Active status and suitable for operating temperatures from -55°C to 125°C. Equivalent and substitute parts are identified based on matching or exceeding the electrical and mechanical specifications of the original component, enabling procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Impedance @ Frequency	100 Ohms @ 100 MHz
Current Rating (Max)	400mA
DC Resistance (DCR) (Max)	200mOhm
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
Height (Max)	0.037" (0.95mm)
Size / Dimension	0.063" L x 0.031" W (1.60mm x 0.80mm)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the FB03YTYN101 is determined by the following critical parameters:

Primary Matching Criteria:

Impedance at 100 MHz: 100 Ohms (exact match required for primary substitutes)
Package / Case: 0603 (1608 Metric) (mandatory for mechanical compatibility)
Mounting Type: Surface Mount (required for PCB assembly compatibility)
Operating Temperature Range: -55°C ~ 125°C (minimum requirement)

Secondary Compatibility Criteria:

Current Rating (Max): 400mA or higher (equal or superior rating acceptable)
DC Resistance (DCR) (Max): 200mOhm or lower (equal or superior performance acceptable)
Height (Max): 0.037" (0.95mm) or lower (ensures PCB clearance compatibility)

Substitute Categories:

Category 1: Direct Electrical Equivalents (100 Ohm @ 100 MHz) Parts meeting exact impedance specification with identical or superior electrical ratings in the same package.

Category 2: Parametric Alternatives (80 Ohm or 120 Ohm @ 100 MHz) Parts with impedance values within the ferrite bead operational range, suitable for applications where impedance tolerance permits deviation from the original 100 Ohm specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Package	Height (Max)	Product Status
FB03YTYN101	Stackpole Electronics Inc	100 Ohms	400mA	200mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active
2506031017Y0	Fair-Rite Products Corp.	100 Ohms	400mA	150mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active
742792620	Würth Elektronik	100 Ohms	500mA	150mOhm	0603 (1608 Metric)	0.039" (1.00mm)	Active
BMC1JY0100AN	TE Connectivity Passive Product	100 Ohms	400mA	150mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active
2506031217Y0	Fair-Rite Products Corp.	120 Ohms	400mA	150mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active
BBGK00160808121Y00	Pulse Electronics	120 Ohms	600mA	150mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active
BLM18AG121SN1D	Murata Electronics	120 Ohms	800mA	180mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active
FB160808T-121Y-S	Cal-Chip Electronics, Inc.	120 Ohms	400mA	150mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active
2506038007Y0	Fair-Rite Products Corp.	80 Ohms	400mA	150mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active
BBBK00160808800Y00	Pulse Electronics	80 Ohms	400mA	150mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active
BMC1JY0080AN	TE Connectivity Passive Product	80 Ohms	400mA	150mOhm	0603 (1608 Metric)	0.037" (0.95mm)	Active

Engineering Selection Recommendations

Direct Equivalents (100 Ohm @ 100 MHz):

The following parts provide direct electrical equivalence to the FB03YTYN101 with identical impedance specification:

2506031017Y0 (Fair-Rite Products Corp.): Meets all primary matching criteria with superior DC resistance performance (150mOhm vs. 200mOhm). ROHS3 Compliant, MSL 1, REACH Unaffected. Recommended for applications requiring lower insertion loss.
BMC1JY0100AN (TE Connectivity Passive Product): Meets all primary matching criteria with superior DC resistance performance (150mOhm vs. 200mOhm). ROHS3 Compliant, MSL 1. Recommended for applications requiring established TE Connectivity supply chain integration.
742792620 (Würth Elektronik, WE-CBF Series): Exceeds current rating specification (500mA vs. 400mA) with superior DC resistance (150mOhm vs. 200mOhm). Height specification is 0.039" (1.00mm), which may require PCB clearance verification. ROHS3 Compliant, MSL 1, REACH Unaffected. Recommended for high-current applications.

Parametric Alternatives (120 Ohm @ 100 MHz):

These parts provide higher impedance values suitable for applications where impedance tolerance permits 20% deviation above the original specification:

BBGK00160808121Y00 (Pulse Electronics, BBGK Series): Exceeds current rating (600mA vs. 400mA) with superior DC resistance (150mOhm vs. 200mOhm). ROHS3 Compliant, MSL 1, REACH Unaffected. Recommended for high-current signal line applications.
BLM18AG121SN1D (Murata Electronics, EMIFIL® BLM18 Series): Significantly exceeds current rating (800mA vs. 400mA). DC resistance is 180mOhm, which is superior to the original 200mOhm specification. ROHS3 Compliant, MSL 1, REACH Unaffected. Recommended for high-current applications requiring premium performance.
FB160808T-121Y-S (Cal-Chip Electronics, Inc., FB Series): Meets current rating specification (400mA) with superior DC resistance (150mOhm vs. 200mOhm). RoHS Compliant, MSL 1, REACH Unaffected. Recommended for cost-optimized applications.
2506031217Y0 (Fair-Rite Products Corp.): Meets current rating specification (400mA) with superior DC resistance (150mOhm vs. 200mOhm). ROHS3 Compliant, MSL 1, REACH Unaffected. Recommended for Fair-Rite supply chain integration.

Parametric Alternatives (80 Ohm @ 100 MHz):

These parts provide lower impedance values suitable for applications where impedance tolerance permits 20% deviation below the original specification:

BBBK00160808800Y00 (Pulse Electronics, BBBK Series): Meets all mechanical and thermal specifications with superior DC resistance (150mOhm vs. 200mOhm). ROHS3 Compliant, MSL 1, REACH Unaffected. Recommended for Pulse Electronics supply chain integration.
BMC1JY0080AN (TE Connectivity Passive Product, BMC Series): Meets all mechanical and thermal specifications with superior DC resistance (150mOhm vs. 200mOhm). ROHS3 Compliant, MSL 1. Recommended for TE Connectivity supply chain integration.
2506038007Y0 (Fair-Rite Products Corp.): Meets all mechanical and thermal specifications with superior DC resistance (150mOhm vs. 200mOhm). ROHS3 Compliant, MSL 1, REACH Unaffected. Recommended for Fair-Rite supply chain integration.

Frequently Asked Questions (FAQ)

Q: Can I use a 120 Ohm ferrite bead as a substitute for the 100 Ohm FB03YTYN101?

A: Yes, if your circuit design permits impedance tolerance of ±20%. The 120 Ohm parts listed provide equivalent mechanical compatibility, thermal performance, and superior electrical characteristics (lower DC resistance). Circuit validation is required to confirm that the higher impedance value does not adversely affect EMI suppression performance in your specific application.

Q: What is the difference between the FB03YTYN101 and the 2506031017Y0?

A: Both parts are 100 Ohm ferrite beads in the 0603 package with identical impedance specification. The primary difference is DC resistance: the FB03YTYN101 has 200mOhm maximum, while the 2506031017Y0 has 150mOhm maximum. The lower DC resistance of the 2506031017Y0 results in reduced insertion loss and heat generation. Both parts operate across the same temperature range (-55°C to 125°C) and support the same 400mA current rating.

Q: Is the Würth Elektronik 742792620 compatible with the FB03YTYN101 footprint?

A: The 742792620 is mechanically compatible with the FB03YTYN101 footprint in terms of length and width (both 0603 package). However, the maximum height is 0.039" (1.00mm) compared to 0.037" (0.95mm) for the FB03YTYN101. PCB clearance must be verified to ensure the slightly taller component does not interfere with adjacent components or solder mask openings.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates Moisture Sensitivity Level 1, which means the component has unlimited shelf life and does not require special moisture control during storage or handling. This is the least restrictive moisture sensitivity classification and simplifies supply chain management.

Q: Can I substitute an 80 Ohm ferrite bead for the 100 Ohm FB03YTYN101?

A: Yes, if your circuit design permits impedance tolerance of -20%. The 80 Ohm parts listed provide equivalent mechanical compatibility, thermal performance, and superior electrical characteristics (lower DC resistance). Circuit validation is required to confirm that the lower impedance value provides adequate EMI suppression in your specific application.

Q: What is the significance of ROHS3 Compliance versus RoHS Compliance?

A: ROHS3 Compliance indicates conformance to the Restriction of Hazardous Substances Directive 2011/65/EU as amended by Directive (EU) 2015/863. RoHS Compliance without the "3" designation indicates conformance to earlier versions of the RoHS directive. Both certifications restrict the use of hazardous substances; ROHS3 represents the current regulatory standard. All listed substitute parts meet or exceed current compliance requirements.

Q: Are all substitute parts listed in Active product status?

A: Yes. All substitute parts identified in this reference are in Active product status, indicating current manufacturing and availability. This ensures long-term supply chain reliability and support from manufacturers.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging supplies components on tape cut into smaller lengths, suitable for lower-volume applications or manual assembly. Both packaging formats are compatible with standard pick-and-place equipment; packaging selection depends on production volume and assembly process requirements.

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