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Product Detailed Parameters
- Description：RF FILTER BANDPASS 5.425GHZ 0805
- Series：DEA
- Mfr：TDK Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Frequency：5.425GHz Center
- Bandwidth：1.05GHz
- Filter Type：Band Pass
- Ripple：-
- Insertion Loss：2dB
- Mounting Type：Surface Mount
- Package / Case：0805 (2012 Metric), 4 PC Pad
- Size / Dimension：0.079" L x 0.049" W (2.00mm x 1.25mm)
- Height (Max)：0.041" (1.05mm)
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Overview
The TDK DEA205425BT-2028A4 is a multilayer bandpass filter designed for RF applications. It operates at a center frequency of 5.425 GHz with a bandwidth of 1050 MHz. The component features a 50 Ohm impedance and utilizes SMD/SMT termination styles within an 0805 (2012 metric) package. It supports a minimum operating temperature of -40°C and a maximum of +85°C. This device is classified as Not Recommended for New Designs (NRND) and has been announced End-of-Life.
Feature Summary
- Multilayer construction for compact RF filtering
- Bandpass functionality centered at 5.425 GHz
- Surface mount design compatible with standard PCB processes
Applications
- Wireless connectivity modules
- Wi-Fi infrastructure equipment
- Bluetooth enabled devices
Procurement Notes
This component is officially designated as End-of-Life (EOL) by TDK Corporation, with the final order date having passed. It is no longer recommended for new designs. Procurement should focus on identifying verified replacement parts or alternative components that meet the same electrical specifications to ensure supply chain continuity and long-term product viability.
Selection Notes
Engineers selecting this part must account for its obsolete status. The primary selection criterion is finding a direct substitute that matches the 5.425 GHz center frequency, 1050 MHz bandwidth, and 0805 footprint. Verification of impedance matching and thermal performance within the -40°C to +85°C range is essential when evaluating alternatives for existing designs.
Part Context
The DEA series represents TDK's line of passive RF filters. This specific model falls under the category of signal conditioning components used in wireless communication systems. It is manufactured by TDK Corporation and is intended for high-frequency applications requiring precise spectral filtering in mobile and IoT devices.
Replacement Considerations
DigiKey lists MFR Recommended substitutes for this obsolete part. Engineers should consult official manufacturer cross-reference guides to identify equivalent components that maintain the required RF performance characteristics and physical dimensions.
FAQ
What is the current manufacturing status of the DEA205425BT-2028A4?
The component is End-of-Life (EOL) and Not Recommended for New Designs (NRND). It is no longer manufactured.
What is the center frequency of this bandpass filter?
The center frequency is 5.425 GHz.
