SMB2.5R-1 API Delevan Filter (Other) In Stock
API Delevan SMB2.5R-1 is a shielded ferrite bead filter covering 10 MHz to 220 MHz with an ultra-low DC resistance of 0.005 Ω and a 4.7 mm height profile in a 4628 case code. It effectively suppresses high-frequency EMI noise on power and signal lines in RF and mixed-signal PCB designs.
- Manufacturer
- API Delevan
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SMB2.5R-1 Datasheet PDF
- Category
- Filter
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Shielded ferrite bead construction with ultra-low DC resistance of 0.005 Ω minimizes power loss while suppressing EMI across 10 MHz to 220 MHz
- Wide frequency attenuation range from 10 MHz to 220 MHz covers common RF interference bands including Wi-Fi, Bluetooth, and cellular harmonics
- Compact 4628 case code with 4.7 mm height fits tight PCB layouts in RF front-end, power supply, and mixed-signal board designs
- RoHS-compliant (Pb-free) construction with JESD-609 e3 coding meets modern environmental and lead-free manufacturing requirements
Applications
The SMB2.5R-1 is used in RF and mixed-signal PCB designs to suppress conducted EMI on DC power rails and high-frequency signal lines operating between 10 MHz and 220 MHz. Its ultra-low 0.005 Ω DC resistance makes it suitable for power filtering in cellular base stations, wireless IoT modules, and industrial motor drives where minimizing resistive losses in high-current supply paths is critical.
Specifications
| Pbfree Code | Yes |
| YTEOL | 6.3 |
| Case Code | 4628 |
| Construction | Shielded |
| DC Resistance-Max | 0.005Ω |
| Filter Type | FERRITE BEAD |
| Frequency-Max | 220MHz |
| Frequency-Min | 10MHz |
| Height | 4.7mm |
| JESD-609 Code | e3 |
| Mounting Type | SURFACE MOUNT |
| Number of Functions | 1 |
| Output Impedance | 385 OHM Ω |
| Packing Method | TAPE AND REEL |
| Rated Current | 9.5A |
| Terminal Finish | Matte Tin (Sn) |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8504.50.80.00 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SMB2.5R-1:
suggested
suggested
suggested
suggested
Frequently Asked Questions
What frequency range does the API Delevan SMB2.5R-1 ferrite bead filter cover and what does it attenuate?
The SMB2.5R-1 provides EMI suppression across a frequency range of 10 MHz to 220 MHz. This broad attenuation band covers common interference sources such as Wi-Fi at 2.4 GHz harmonics, Bluetooth at 2.4 GHz, and switching power supply ripple, making it effective for filtering conducted noise on both power rails and signal lines in RF-sensitive circuits.
How low is the DC resistance of the SMB2.5R-1 and why does it matter for power rail filtering?
The SMB2.5R-1 has a maximum DC resistance of 0.005 Ω (5 milliohms), which is extremely low for a shielded ferrite bead in the 4628 case size. This minimal resistance ensures negligible voltage drop and power dissipation even at elevated currents, preserving supply voltage integrity on sensitive RF or analog power rails where a higher-resistance bead would degrade circuit performance.
In which EMC-sensitive applications is the SMB2.5R-1 shielded ferrite bead most beneficial?
The SMB2.5R-1 is most beneficial in RF front-end modules, cellular modem power supplies, and industrial automation controllers where conducted emissions between 10 MHz and 220 MHz must meet CISPR 22 or FCC Part 15 Class B limits. Its shielded 4628 case construction with 4.7 mm height also prevents radiated coupling between adjacent board sections, improving co-site EMC compliance.
What alternative API Delevan parts should be considered when the SMB2.5R-1 is unavailable?
When the SMB2.5R-1 is out of stock, engineers can evaluate other API Delevan SMB-series ferrite beads with similar 10 MHz to 220 MHz coverage and DC resistance below 0.01 Ω. Competitors such as Murata BLM series or TDK MPZ series offer equivalent 4628 footprint shielded ferrite beads, though designers should verify impedance-versus-frequency curves to confirm equivalent attenuation at their specific interference frequencies.
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