LFL18829MTCRE390

Product Overview

The LFL18829MTCRE390 is a 807 MHz-class miniature low-pass RF filter used in LTE and sub-GHz cellular transmitter harmonic suppression. This is a filtering component rather than a conventional transformer. Its role is to pass the intended RF band while reducing harmonic and out-of-band energy before the antenna, amplifier or receiver stage. Confirmed selection information includes operating band: 698 MHz to 915 MHz passband; port impedance: 50 Ω single-ended; insertion-loss data: 0.79 dB typical, 1.0 dB max at 25°C and 1.25 dB max over temperature; attenuation data: 30 dB minimum from 1.398 GHz to 1.559 GHz.

Exact specification uses a nominal 807 MHz response, 698-915 MHz passband, 0.79 dB typical loss and at least 30 dB attenuation in the stated second-harmonic region. RF layout should follow the manufacturer land pattern, with controlled impedance, short interconnects and appropriate grounding around the signal-conditioning network. The recorded lifecycle state is End-of-life / legacy exact model.

Key Features

• Manufacturer: Murata Electronics
• Part Number: LFL18829MTCRE390
• Product Category: RF Low-Pass Filter
• Device Type: 807 MHz-class miniature low-pass RF filter
• Frequency Range / Band: 698 MHz to 915 MHz passband
• System / Port Impedance: 50 Ω single-ended
• Insertion Loss: 0.79 dB typical, 1.0 dB max at 25°C and 1.25 dB max over temperature
• Attenuation / Rejection: 30 dB minimum from 1.398 GHz to 1.559 GHz
• Technology: Murata multilayer low-pass filter
• Package / Case: Miniature surface-mount Murata LFL18 package
• Mounting Type: Surface mount
• Operating Temperature: -40°C to +85°C
• Lifecycle Status: End-of-life / legacy exact model
• Packaging: Tape and reel
• Primary Application: LTE and sub-GHz cellular transmitter harmonic suppression

Applications

• LTE and sub-GHz cellular transmitter harmonic suppression
• Transmitter harmonic suppression and receiver out-of-band rejection
• Compact RF front ends requiring a 50 Ω filtered signal path

Quality & Sourcing

Antrex Electronics can support sourcing of LFL18829MTCRE390 for production, repair and shortage requirements. Incoming verification can compare the exact manufacturer marking, ordering suffix, package, frequency range, port configuration and documented RF function. For legacy or obsolete components, date-code and condition review, visual inspection and third-party testing can be coordinated before shipment. Alternative parts should remain subject to engineering approval because a nearby family code may use a different impedance, winding arrangement, filter response, RFIC match or PCB footprint.