FB02YTYN330 Ferrite Bead 33 Ohm 0402 Equivalent & Substitute Parts

Part Overview

The FB02YTYN330 is a ferrite bead component manufactured by Stackpole Electronics Inc., designed for electromagnetic interference (EMI) suppression in surface mount applications. This 0402 (1005 Metric) package ferrite bead operates at 33 Ohms impedance at 100 MHz with a maximum current rating of 300mA and DC resistance of 300mOhm. The component is classified as Active product status with 1,044 pieces currently in stock.

Ferrite beads are essential passive components used in signal conditioning, power distribution, and EMI filtering circuits. Finding equivalent and substitute parts becomes necessary when the primary component experiences supply constraints, obsolescence, or when design requirements allow for parametric variations within acceptable tolerances.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	FB02YTYN330	—
Manufacturer	Stackpole Electronics Inc	—
Package / Case	0402 (1005 Metric)	—
Impedance @ Frequency	33 Ohms @ 100 MHz	Ω
Current Rating (Max)	300	mA
DC Resistance (DCR) (Max)	300	mOhm
Operating Temperature Range	-55°C ~ 125°C	—
Mounting Type	Surface Mount	—
Height (Max)	0.024" (0.60mm)	—
Size / Dimension	0.039" L x 0.020" W (1.00mm x 0.50mm)	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution logic for the FB02YTYN330 ferrite bead is determined by the following critical parameters:

Primary Substitution Criteria:

Package / Case: 0402 (1005 Metric) — mechanical and footprint compatibility
Impedance @ Frequency: 33 Ohms @ 100 MHz or 30 Ohms @ 100 MHz — functional performance within acceptable tolerance
Current Rating (Max): 300mA or higher — electrical load capacity
DC Resistance (DCR) (Max): 300mOhm or lower — insertion loss characteristics
Operating Temperature Range: -55°C ~ 125°C — thermal operating envelope
Mounting Type: Surface Mount — assembly compatibility

Substitute parts are grouped into two categories:

Category A — Exact Impedance Match (33 Ohms @ 100 MHz): Parts maintaining the original 33 Ohm impedance specification provide direct functional equivalence with minimal circuit redesign risk.

Category B — Near-Impedance Match (30 Ohms @ 100 MHz): Parts with 30 Ohm impedance represent a 9% reduction from the original specification. These substitutes are acceptable when circuit design margins accommodate this impedance variation and when current rating and DCR specifications meet or exceed application requirements.

All substitute parts maintain identical package dimensions, operating temperature range, and surface mount compatibility with the primary component.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Product Status	Packaging
FB02YTYN330	Stackpole Electronics Inc	33 Ω	300 mA	300 mOhm	Active	Tape & Reel (TR)
MMZ1005D330CT000	TDK Corporation	33 Ω	400 mA	240 mOhm	Active	Tape & Reel (TR)
7427927130	Würth Elektronik	30 Ω	300 mA	150 mOhm	Obsolete	Cut Tape (CT) & Digi-Reel®
74279274	Würth Elektronik	30 Ω	300 mA	250 mOhm	Active	Tape & Reel (TR)
BBSY00100505300Y00	Pulse Electronics	30 Ω	500 mA	200 mOhm	Active	Tape & Reel (TR)
BMC1EY0030AN	TE Connectivity Passive Product	30 Ω	300 mA	200 mOhm	Active	Cut Tape (CT)
FB100505T-300Y-S	Cal-Chip Electronics, Inc.	30 Ω	300 mA	200 mOhm	Active	Tape & Reel (TR)
GZ1005U300TF	Shenzhen Sunlord Electronics Co., Ltd.	30 Ω	300 mA	200 mOhm	Active	Tape & Reel (TR)
MLB03-300-RC	Allied Components International	30 Ω	300 mA	300 mOhm	Active	Tape & Reel (TR)
MU1005-300Y	Bourns Inc.	30 Ω	300 mA	200 mOhm	Active	Tape & Reel (TR)
WLBD1005K2U300TP	Walsin Technology Corporation	30 Ω	300 mA	250 mOhm	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Preferred Substitute — Exact Impedance Match:

The MMZ1005D330CT000 (TDK Corporation) is the primary recommended substitute for the FB02YTYN330. This part maintains the identical 33 Ohm impedance specification while offering superior electrical characteristics: 400mA current rating (33% higher than the original) and 240mOhm DCR (20% lower than the original). The MMZ1005D330CT000 carries Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). With 19,557 pieces in stock, supply availability is robust.

Secondary Substitutes — Near-Impedance Match (30 Ohms @ 100 MHz):

When 30 Ohm impedance is acceptable within circuit design margins, the following Active status parts provide viable alternatives:

BBSY00100505300Y00 (Pulse Electronics): Offers the highest current rating at 500mA with 200mOhm DCR. Suitable for applications requiring enhanced current capacity. 18,596 pieces in stock.
FB100505T-300Y-S (Cal-Chip Electronics, Inc.): Maintains matched current and DCR specifications with RoHS compliance. Largest inventory at 100,900 pieces, ensuring supply continuity.
MU1005-300Y (Bourns Inc.): Dual-purpose ferrite bead rated for both power and signal line applications. 10,954 pieces in stock.
BMC1EY0030AN (TE Connectivity Passive Product): Signal line optimized ferrite bead with 200mOhm DCR. Available in Cut Tape packaging. 20,745 pieces in stock.
GZ1005U300TF (Shenzhen Sunlord Electronics Co., Ltd.): Signal line ferrite bead with 200mOhm DCR. 20,878 pieces in stock.
74279274 (Würth Elektronik): Active status WE-CBF series with 250mOhm DCR. Largest inventory among Würth options at 101,766 pieces.
WLBD1005K2U300TP (Walsin Technology Corporation): 250mOhm DCR specification with ROHS3 compliance. 15,438 pieces in stock.
MLB03-300-RC (Allied Components International): Matches original 300mOhm DCR specification. 1,069 pieces in stock.

Parts to Avoid:

The 7427927130 (Würth Elektronik) carries Obsolete product status and should not be selected for new designs or long-term supply requirements, despite adequate electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 30 Ohm ferrite bead for the 33 Ohm FB02YTYN330?

A: Yes, provided circuit design margins accommodate a 9% impedance reduction. The 30 Ohm impedance represents a near-equivalent specification. Verify that your application's EMI filtering requirements do not depend on the specific 33 Ohm characteristic. Consult circuit simulation or empirical testing if impedance tolerance is critical to performance.

Q: What is the difference between the MMZ1005D330CT000 and the FB02YTYN330?

A: Both parts maintain 33 Ohm impedance at 100 MHz and 0402 package compatibility. The MMZ1005D330CT000 offers superior electrical performance: 400mA current rating versus 300mA, and 240mOhm DCR versus 300mOhm. The MMZ part is manufactured by TDK Corporation and carries Active product status. These differences make the MMZ1005D330CT000 a direct upgrade path.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts carry ROHS3 compliance certification. The original FB02YTYN330 does not specify RoHS status in the provided data. Verify RoHS compliance requirements with your procurement or quality assurance department if this certification is mandatory for your application.

Q: Can I use parts with different packaging formats (Cut Tape vs. Tape & Reel)?

A: Packaging format affects supply chain logistics and assembly line compatibility, not electrical performance. Cut Tape (CT) packaging is suitable for lower-volume or manual assembly operations. Tape & Reel (TR) packaging is standard for high-volume automated assembly. Select packaging based on your manufacturing process requirements. The BMC1EY0030AN is available in Cut Tape format if your assembly process requires this packaging type.

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

A: DC Resistance (DCR) is the ohmic resistance of the ferrite bead measured at direct current. Lower DCR values result in less power dissipation and heat generation in the component. The FB02YTYN330 specifies 300mOhm maximum DCR. Substitute parts with lower DCR (such as 150mOhm or 200mOhm) provide improved efficiency. Parts with equal or higher DCR (250mOhm or 300mOhm) are acceptable if current capacity and thermal design margins are adequate.

Q: Which substitute part has the best inventory availability?

A: The FB100505T-300Y-S (Cal-Chip Electronics, Inc.) offers the largest inventory at 100,900 pieces. The 74279274 (Würth Elektronik) provides 101,766 pieces. Both parts ensure supply continuity for high-volume production. For exact impedance matching, the MMZ1005D330CT000 provides 19,557 pieces in stock.

Q: Are there any moisture sensitivity concerns with these ferrite beads?

A: All listed substitute parts specify Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements. The original FB02YTYN330 does not specify MSL in the provided data. MSL 1 classification means these components do not require special moisture-controlled storage or handling procedures.

Q: Can I mix different ferrite bead manufacturers in the same circuit board design?

A: Yes. All substitute parts maintain identical package dimensions (0402 / 1005 Metric), operating temperature range (-55°C ~ 125°C), and surface mount compatibility. Mixing manufacturers is acceptable from a mechanical and thermal perspective. Verify that impedance and DCR specifications are consistent across all ferrite bead positions in your circuit if they serve identical functional roles.

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