Device Overview

General Description

The MFBP-00127CSP3 passive MMIC surface mount bandpass filter is an ideal solution for small form factor, high rejection filtering. Passive GaAs MMIC technology allows production of smaller filter constructions that replace larger form factor circuit board constructions. Tight fabrication tolerances allow for less unit-to-unit variation than traditional filter technologies. The MFBP-00127CSP3 is available in our 3.5 x 3.5mm CSP3 chip scale package. Low unit to unit variation allows for accurate simulations using the provided S2P file taken from measured production units. For a lower loss option, please see MFBP-00061CSP3, or for wider bandwidth, MFBP-00126CSP3.

Photo of MFBP-00127CSP3

Features

  • Excellent Return Loss
  • High Stop Band Suppression
  • Wide Stop Band with Fast Roll-Off
  • This product embodies Marki Microwave's U.S. Pat. 11,869,858.

Applications

N/A

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionPackageGreen StatusProduct LifecycleExport Classification
MFBP-00127CSP3Passive GaAs MMIC 17.8 - 20.2 GHz Bandpass FilterCSP3

RoHS

REACH

ReleasedEAR99
EVB-MFBP-00127Evaluation Board, Passive GaAs 17.8-20.2 GHz MMIC Bandpass FilterEVB

RoHS

REACH

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
-2025-05-28Initial Release

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Port Configuration and Functions

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
Ground PaddleGround CSP3 package ground path is provided through the ground paddle and should be connected to RF ground.Equivalent circuit for the Ground
Pin 1Input/Output Pin 1 is DC short to ground for the CSP3 package.Equivalent circuit for the Input/Output
Pin 4Input/Output Pin 4 is DC short to ground for the CSP3 package.Equivalent circuit for the Input/Output

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Specifications

Absolute Maximum Ratings

The Absolute Maximum Ratings indicate limits beyond which damage may occur to the device. If these limits are exceeded, the device may be inoperable or have a reduced lifetime.

ParameterMaximum RatingUnit
Maximum Operating Temperature 100°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -55°C
Minimum Storage Temperature -65°C

Package Information

ParameterDetailsRating
Dimensions-3.50 x 3.50 mm
Moisture Sensitivity Level-MSL 1

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Typical data shown is for the filter in a CSP3 package with a sine wave input applied to Pin 1. Min and Max limits are guaranteed at TA=+25°C.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
1 dBc Passband Temp = 25°C
17.45 20.43---GHz
30 dBc Rejection Point Temp = 25°C
16.26 21.86---GHz
3 dBc Passband Temp = 25°C
17.03 20.71---GHz
Center Freq Temp = 25°C
- --18.88-GHz
Group Delay Temp = 25°C
- --483.88-ps
Impedance Temp = 25°C
- --50-Ω
Insertion Loss @ fc Temp = 25°C
- --2.5-dB
Passband Return Loss Temp = 25°C
- --22-dB

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Typical Performance Plot

Insertion Loss (dB) graph for MFBP-00127CSP3
Insertion Loss (dB) graph for MFBP-00127CSP3
Return Loss (dB) graph for MFBP-00127CSP3
Return Loss (dB) graph for MFBP-00127CSP3
Group Delay (ps) graph for MFBP-00127CSP3

Measured data is de-embedded from fixture using automatic fixture removal (AFR).

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Mechanical Data

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Rev: - | Copyright © 2025 Marki Microwave LLC.

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Evaluation Board - Outline Drawing

Outline Drawing

Rev: - | Copyright © 2025 Marki Microwave LLC.

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