RF Power Divider 40268 Equivalent & Substitute Parts

Part Overview

The TTM Technologies 40268 is an RF power divider module designed for operation in the 8 GHz to 12.4 GHz frequency band. This component provides 16 dB minimum isolation with a maximum VSWR of 1.8 and insertion loss of 0.7 dB. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new designs requiring similar RF distribution capabilities.

Substiute Parts

40268

TTM Technologies, Inc.In Stock: 77140268 Datasheet

Current PartRFQ

4326B-2

L3 Narda-MITEQIn Stock: 10134326B-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 40268 is determined by the following critical parameters:

• Frequency Coverage: The substitute must support the 8 GHz to 12.4 GHz operating band of the original part
• Isolation Performance: Minimum 16 dB isolation is required to maintain signal separation
• VSWR Specification: Maximum 1.8 VSWR ensures impedance matching compatibility
• Insertion Loss: Performance at or below 0.7 dB maintains signal integrity
• Package Configuration: Module form factor with compatible physical dimensions
• Electrical Interface: RF connector compatibility and port configuration

The L3 Narda-MITEQ 4326B-2 qualifies as a substitute because its frequency range of 5 GHz to 18 GHz encompasses the entire 8 GHz to 12.4 GHz band of the original part, while exceeding isolation performance (19 dB minimum) and maintaining lower insertion loss (0.6 dB). The module package format and MSL rating support direct functional replacement.

Parameter Comparison

Engineering Selection Recommendations

The L3 Narda-MITEQ 4326B-2 is the qualified substitute for the obsolete TTM 40268. Selection is based on the following engineering criteria:

• Frequency Compatibility: The 4326B-2 frequency range fully encompasses the 8 GHz to 12.4 GHz operating band
• Performance Enhancement: Superior isolation (19 dB vs. 16 dB) and lower insertion loss (0.6 dB vs. 0.7 dB) provide improved RF distribution performance
• Active Product Status: The 4326B-2 is in active production, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both parts share identical REACH and ECCN classifications (EAR99), maintaining export and regulatory compliance
• RoHS Compliance: The 4326B-2 is RoHS Compliant, meeting modern environmental standards
• Physical Integration: Module package format supports direct mechanical replacement, though dimensional differences (smaller footprint) may require PCB layout adjustment

Frequently Asked Questions (FAQ)

Q: Can the L3 Narda-MITEQ 4326B-2 directly replace the TTM 40268 in existing designs?

A: The 4326B-2 provides functional RF performance equivalent to or exceeding the 40268 across the 8 GHz to 12.4 GHz band. However, physical dimensions differ (0.750" L vs. 1.200" L), requiring PCB layout verification. RF connector compatibility must be confirmed for your specific application.

Q: What are the key performance advantages of the 4326B-2 substitute?

A: The 4326B-2 offers 3 dB higher isolation (19 dB vs. 16 dB), 0.1 dB lower insertion loss (0.6 dB vs. 0.7 dB), and broader frequency coverage (5 GHz to 18 GHz vs. 8 GHz to 12.4 GHz), providing improved signal separation and reduced attenuation.

Q: Are there regulatory or compliance differences between the original and substitute parts?

A: Both parts are classified as REACH Unaffected and EAR99 for export control purposes. The 4326B-2 additionally carries RoHS Compliance certification, meeting current environmental regulations.

Q: What should be considered when integrating the 4326B-2 into existing systems?

A: Verify RF connector type and port configuration compatibility. Confirm PCB layout accommodates the smaller physical footprint (0.750" L × 1.000" W × 0.375" H). Validate that the improved electrical performance (lower insertion loss, higher isolation) does not require system-level adjustments.

Q: Is the 4326B-2 available in production quantities?

A: Yes, the 4326B-2 is an active product with current inventory availability, ensuring reliable supply for production and support applications.