RF Power Divider 40288 Equivalent & Substitute Parts

Part Overview

The TTM Technologies, Inc. model 40288 is an RF power divider module designed for operation across the 7 GHz to 12.4 GHz frequency band. This component provides a minimum isolation of 15 dB with an insertion loss of 2 dB and is housed in a compact module package measuring 4.950" L x 2.500" W x 0.360" H.

The 40288 has reached obsolete product status, making it necessary to identify functionally equivalent alternatives for ongoing system design and maintenance applications. Substitute components must maintain compatibility within the specified frequency range and isolation requirements while accommodating modern supply chain availability.

Substiute Parts

40288

TTM Technologies, Inc.In Stock: 86540288 Datasheet

Current PartRFQ

PWD-5526-08-SMA-79

Cinch Connectivity Solutions Midwest MicrowaveIn Stock: 1106PWD-5526-08-SMA-79 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for RF power divider modules is determined by the following critical parameters:

Frequency Coverage: The substitute must support the 7 GHz to 12.4 GHz operating band of the original component. Extended frequency range capability does not disqualify a substitute provided the specified band is fully covered.

Isolation Performance: Minimum isolation of 15 dB is required. Substitutes meeting or exceeding this specification maintain signal separation characteristics necessary for system performance.

Package Configuration: Module-level packaging is required to ensure mechanical and electrical compatibility within the host system.

Insertion Loss: While the original component specifies 2 dB insertion loss, substitutes with lower insertion loss values represent performance improvements and are acceptable.

The PWD-5526-08-SMA-79 meets all substitution criteria through extended frequency coverage (5 GHz – 19 GHz), superior isolation performance (20 dB minimum), and improved insertion loss (0.4 dB).

Parameter Comparison

Engineering Selection Recommendations

The PWD-5526-08-SMA-79 is the designated manufacturer-recommended substitute for the obsolete 40288. This component is currently in active production status, ensuring supply chain availability for new designs and replacement applications.

Both components share identical moisture sensitivity classification (MSL 1) and export control designation (ECCN EAR99), eliminating compliance barriers to substitution. The PWD-5526-08-SMA-79 provides measurable performance improvements through enhanced isolation (20 dB versus 15 dB) and significantly reduced insertion loss (0.4 dB versus 2 dB) while maintaining full frequency band coverage of the original specification.

The substitute's extended frequency range (5 GHz – 19 GHz) provides operational flexibility beyond the original 7 GHz – 12.4 GHz band without introducing compatibility constraints.

Frequently Asked Questions (FAQ)

Q: Can the PWD-5526-08-SMA-79 directly replace the 40288 in existing designs?

A: Yes. The substitute meets all critical electrical parameters (frequency range, isolation, and insertion loss) and shares identical moisture sensitivity and export control classifications. Mechanical integration should be verified against specific mounting requirements of the host system.

Q: What is the significance of the improved isolation specification in the substitute?

A: The PWD-5526-08-SMA-79 provides 20 dB minimum isolation compared to the original 15 dB specification. This represents enhanced signal separation between output ports, improving system performance and reducing cross-coupling effects.

Q: Does the lower insertion loss of the substitute affect system design?

A: The PWD-5526-08-SMA-79 insertion loss of 0.4 dB is substantially lower than the original 2 dB specification. This reduction decreases signal attenuation and improves overall system efficiency. System designs accounting for the original 2 dB loss will experience improved performance with the substitute.

Q: Are there packaging differences between the original and substitute?

A: Both components are module-type packages with MSL 1 classification. Physical dimensions differ (original: 4.950" L x 2.500" W x 0.360" H; substitute: 4.600" L x 4.000" W). Mechanical fit verification is required for specific mounting applications.

Q: What is the compliance status of the substitute?

A: The PWD-5526-08-SMA-79 is RoHS non-compliant. If RoHS compliance is required for your application, this constraint must be evaluated against system requirements.