LFB185G53CTCE965 is a multilayer LC bandpass filter (BPF) manufactured by Murata.

II. Core Parameters (Model Decoding + Key Specifications)

Model Decoding

• LFB: Series Name (LC Bandpass Filter)

• 18: Package size 0603 (1.6×0.8mm)

• 5G53: Center frequency 5530MHz (5.53GHz)

• CT: Package / characteristic code

• CE965: Batch / specification code

Key Electrical Parameters

• Center Frequency (fo): 5530MHz

• Bandwidth (BW): fo±387.5MHz → 5142.5MHz～5917.5MHz

• Insertion Loss: ≤1.5dB @25℃

• Impedance: 50Ω

• Power Rating: 0.5W

• Operating Temperature: -40℃～+85℃

III. Functions

RF Signal Frequency Selection: Only allows signals in the 5.14～5.92GHz frequency band to pass, and suppresses out-of-band interference (such as spurious signals above 2.4GHz, 3.5GHz and 6GHz).Low Insertion Loss: Low in-band loss (≤1.5dB) to improve RF link sensitivity and transmission efficiency.High Rejection: Provides 20～30dB attenuation for adjacent frequency bands (such as 4G/5G low-frequency bands and Wi‑Fi 6E high-frequency bands) to prevent signal crosstalk.Miniaturized SMT Package: 0603 size is suitable for high-density PCB and simplifies RF layout design.

IV. Application Scope

• 5G Sub‑6GHz Terminals: RF front-end filtering for 5G NR n77/n78/n79 frequency bands (3.5GHz/4.5GHz/5.5GHz).

• Wi‑Fi 6/6E/7: 5GHz U‑NII band (5.15～5.925GHz) network cards, routers and AP modules.

• Automotive Communication: Automotive-grade 5G/DSRC/V2X RF modules with excellent temperature resistance and vibration resistance.

• Industry & IoT: 5G industrial gateways, high-definition video transmission equipment and low-latency wireless communication terminals.

• Base Station & Small Cell: RF receiving and transmitting filtering for 5G micro base stations and pico base stations.

V. Selection Guidelines

1. Designed for scenarios requiring 5.5GHz center frequency and 775MHz bandwidth.

2. Optimized for 5G + Wi‑Fi 6E dual-mode devices, compatible with mainstream global 5G and Wi‑Fi frequency bands.

3. Adopts 50Ω impedance matching to simplify RF circuit design.