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API Delevan 4221-2 Ferrite Bead Equivalent & Substitute Parts
Part Overview
The API Delevan 4221-2 is a ferrite bead component designed for electromagnetic interference (EMI) suppression in surface mount applications. This 2-SMD, J-Lead ferrite bead operates at 95 Ohms impedance at 100 MHz with a maximum current rating of 5A and typical DC resistance of 0.8mOhm. The component is currently in active production status. Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when supply chain optimization is required, or when design revisions necessitate alternative component sourcing while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Impedance @ Frequency | 95 Ohms @ 100 MHz |
| Current Rating (Max) | 5A |
| DC Resistance (DCR) (Max) | 0.8mOhm (Typ) |
| Number of Lines | 1 |
| Package / Case | 2-SMD, J-Lead |
| Mounting Type | Surface Mount |
| Size / Dimension | 0.374" L x 0.120" W (9.50mm x 3.05mm) |
| Height (Max) | 0.128" (3.25mm) |
| Operating Temperature | -55°C ~ 125°C |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Packaging | Tape & Reel (TR) |
Substitute Part Grouping Explanation
Substitution of ferrite bead components is determined by strict equivalence across the following critical parameters:
Electrical Parameters:
- Impedance value and frequency specification (95 Ohms @ 100 MHz)
- Current rating capacity (5A maximum)
- DC resistance characteristics
Mechanical Parameters:
- Package type and lead configuration (2-SMD, J-Lead)
- Physical dimensions (0.374" L x 0.120" W, 0.128" max height)
- Mounting technology (Surface Mount)
Environmental Parameters:
- Operating temperature range (-55°C ~ 125°C)
- Moisture sensitivity classification (MSL 1)
The substitute part 4221R-2 maintains identical electrical performance, mechanical compatibility, and environmental specifications as the primary part 4221-2, with the distinction of RoHS3 compliance status.
Parameter Comparison
| Parameter | 4221-2 | 4221R-2 | Match Status |
|---|---|---|---|
| Impedance @ Frequency | 95 Ohms @ 100 MHz | 95 Ohms @ 100 MHz | Identical |
| Current Rating (Max) | 5A | 5A | Identical |
| Number of Lines | 1 | 1 | Identical |
| Package / Case | 2-SMD, J-Lead | 2-SMD, J-Lead | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| Size / Dimension | 0.374" L x 0.120" W (9.50mm x 3.05mm) | 0.374" L x 0.120" W (9.50mm x 3.05mm) | Identical |
| Height (Max) | 0.128" (3.25mm) | 0.128" (3.25mm) | Identical |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | Identical |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Identical |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | Different |
| Product Status | Active | Active | Identical |
Engineering Selection Recommendations
Primary Part (4221-2): Suitable for applications where RoHS non-compliant components are acceptable or required by design specifications. Active production status ensures availability for ongoing procurement.
Substitute Part (4221R-2): Provides identical electrical and mechanical performance with the addition of ROHS3 compliance. Selection of the 4221R-2 is appropriate for designs requiring regulatory compliance with RoHS3 directives or when customer specifications mandate RoHS-compliant component sourcing. Both parts maintain active production status and equivalent inventory availability.
The selection between 4221-2 and 4221R-2 is determined solely by compliance requirements and regulatory constraints applicable to the end application, not by electrical or mechanical performance differences.
Frequently Asked Questions (FAQ)
Q: Can the 4221R-2 be used as a direct replacement for the 4221-2 in existing designs?
A: Yes. The 4221R-2 maintains identical electrical specifications (95 Ohms @ 100 MHz, 5A current rating), mechanical dimensions (0.374" L x 0.120" W, 0.128" height), and package configuration (2-SMD, J-Lead). Direct substitution is electrically and mechanically compatible without design modification.
Q: What is the primary difference between these two ferrite bead part numbers?
A: The primary difference is RoHS compliance status. The 4221-2 is RoHS non-compliant, while the 4221R-2 is ROHS3 compliant. All other electrical, mechanical, and environmental parameters are identical.
Q: Are there any DC resistance differences between 4221-2 and 4221R-2?
A: The 4221-2 specifies 0.8mOhm typical DC resistance. The 4221R-2 does not provide a specified DC resistance value in available documentation. For applications where DC resistance is a critical design parameter, the 4221-2 specification should be referenced.
Q: Do both parts use the same packaging format?
A: Yes. Both the 4221-2 and 4221R-2 are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.
Q: What is the moisture sensitivity classification for these ferrite beads?
A: Both parts are classified as MSL 1 (Unlimited), indicating minimal moisture sensitivity and no special storage or handling requirements.
Q: Can these ferrite beads be used in high-temperature applications?
A: Yes. Both parts are rated for operating temperatures from -55°C to 125°C, suitable for industrial and automotive temperature ranges.
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