Equivalent & Substitute Parts for FB03YTYN301

Part Overview

The FB03YTYN301 is a ferrite bead manufactured by Stackpole Electronics Inc., designed for electromagnetic interference (EMI) suppression in 0603 (1608 Metric) surface mount applications. This component operates at 300 Ohms impedance at 100 MHz with a maximum current rating of 200mA and 400mOhm DC resistance. The part is currently in active production status with 1113 pieces available in inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the critical parameters that define ferrite bead functionality: impedance at frequency, current rating, DC resistance, package dimensions, and operating temperature range.

Substiute Parts

FB03YTYN301

Stackpole Electronics IncIn Stock: 1152FB03YTYN301 Datasheet

Current PartRFQ

2506033017Y0

Fair-Rite Products Corp.In Stock: 81452506033017Y0 Datasheet

Parametric EquivalentRFQ

742792631

Würth ElektronikIn Stock: 1349742792631 Datasheet

Parametric EquivalentRFQ

74279264

Würth ElektronikIn Stock: 530574279264 Datasheet

Parametric EquivalentRFQ

742792640

Würth ElektronikIn Stock: 34601742792640 Datasheet

Parametric EquivalentRFQ

BBBK00160808301Y00

Pulse ElectronicsIn Stock: 8501BBBK00160808301Y00 Datasheet

Parametric EquivalentRFQ

GZ1608D301TF

Shenzhen Sunlord Electronics Co., Ltd.In Stock: 8600GZ1608D301TF Datasheet

Parametric EquivalentRFQ

MCB05-241-RC

Allied Components InternationalIn Stock: 843MCB05-241-RC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for ferrite beads is determined by strict equivalence in the following parameters:

Primary Equivalence Criteria:

• Impedance @ 100 MHz: Must equal 300 Ohms
• Package / Case: Must be 0603 (1608 Metric)
• Number of Lines: Must be 1
• Operating Temperature Range: Must span -55°C to 125°C
• Mounting Type: Must be Surface Mount

Secondary Compatibility Parameters:

• Current Rating (Max): Substitute must meet or exceed 200mA
• DC Resistance (Max): Substitute must not exceed 400mOhm
• Physical dimensions must be compatible with 0603 footprint

Parts that deviate from the primary equivalence criteria are classified as parametric variants and are included for reference only when they maintain functional compatibility within the application context.

Parameter Comparison

Engineering Selection Recommendations

Full Electrical and Mechanical Equivalents (Primary Substitutes):

The following parts meet all primary equivalence criteria and maintain identical impedance at 100 MHz, package dimensions, and operating temperature range:

• 2506033017Y0 (Fair-Rite Products Corp.): Exceeds current rating specification (400mA vs. 200mA requirement) with improved DC resistance (300mOhm vs. 400mOhm maximum). Active product status with ROHS3 compliance and unlimited moisture sensitivity level.

• 74279264 (Würth Elektronik WE-CBF Series): Matches current rating at 200mA with improved DC resistance (350mOhm). Active product status with ROHS3 compliance and unlimited moisture sensitivity level. Available in Cut Tape & Digi-Reel® packaging.

• 742792640 (Würth Elektronik WE-CBF Series): Exceeds current rating (300mA) with improved DC resistance (350mOhm). Active product status with ROHS3 compliance and unlimited moisture sensitivity level. Available in Tape & Reel packaging with highest inventory availability (34,524 pieces).

• BBBK00160808301Y00 (Pulse Electronics BBBK Series): Exceeds current rating (300mA) while maintaining DC resistance specification (400mOhm). Active product status with ROHS3 compliance and unlimited moisture sensitivity level.

• GZ1608D301TF (Shenzhen Sunlord Electronics GZ Series): Matches current rating at 200mA with improved DC resistance (350mOhm). Active product status with ROHS3 compliance.

Parametric Variants (Limited Substitution):

• 742792631 (Würth Elektronik WE-CBF Series): Impedance deviation at 240 Ohms (vs. 300 Ohms specification). Obsolete product status. Not recommended for new designs.

• MCB05-241-RC (Allied Components International MCB05 Series): Impedance deviation at 240 Ohms (vs. 300 Ohms specification). Exceeds current rating capability (400mA) with superior DC resistance (250mOhm). Active product status with RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can I substitute FB03YTYN301 with a part that has different impedance at 100 MHz?

A: No. Impedance at 100 MHz is the primary electrical specification that determines EMI suppression performance. Parts with 240 Ohms impedance (such as 742792631 or MCB05-241-RC) will not provide equivalent filtering characteristics and are not suitable substitutes for applications requiring 300 Ohms impedance.

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

A: DC Resistance represents the resistive loss through the ferrite bead at DC and low frequencies. Lower DCR values reduce signal attenuation and power dissipation. Substitute parts with DCR values equal to or lower than the original specification (400mOhm maximum) are acceptable and often preferable.

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

A: Yes. The original FB03YTYN301 specifies 200mA maximum current rating. Substitute parts with equal or higher current ratings (such as 2506033017Y0 at 400mA or 742792640 at 300mA) are compatible and provide additional design margin. The current rating must not be lower than the original specification.

Q: Are there packaging differences between substitute parts?

A: Yes. The original FB03YTYN301 is supplied in Tape & Reel (TR) packaging. Some substitutes such as 74279264 and 742792631 are available in Cut Tape (CT) & Digi-Reel® packaging. All parts maintain identical 0603 (1608 Metric) footprint compatibility. Packaging selection depends on assembly process requirements and volume.

Q: What does "Obsolete" product status mean for part 742792631?

A: Obsolete status indicates the manufacturer has discontinued production. While the part may still be available from inventory, it is not recommended for new designs. Active status parts such as 74279264, 742792640, BBBK00160808301Y00, and GZ1608D301TF are preferred for long-term supply chain reliability.

Q: How do RoHS and REACH compliance affect substitution decisions?

A: All recommended substitute parts are ROHS3 compliant, meeting environmental and hazardous substance restrictions. REACH compliance status varies by manufacturer. Parts with documented REACH compliance (such as 2506033017Y0, 74279264, 742792640, and BBBK00160808301Y00) are preferred for applications subject to European Union regulations.

Q: Can I mix different substitute parts in the same design?

A: Yes. All primary equivalent substitutes maintain identical impedance at 100 MHz, package dimensions, and operating temperature range. Mixing parts from different manufacturers is acceptable provided all parts meet the minimum electrical specifications for the application.