AT-107V RF Attenuator 7dB 50 Ohm SMA Equivalent & Substitute Parts

Part Overview

The AT-107V is a 7dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for inline attenuation applications across 0 Hz to 18 GHz with 50 Ohm impedance and 2W power handling in SMA connector configuration. This part is designated as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain flexibility for applications requiring 7dB attenuation in the specified frequency and power range.

Key Parameters

Parameter	AT-107V Specification
Attenuation Value	7dB
Frequency Range	0 Hz ~ 18 GHz
Impedance	50 Ohms
Power Rating	2W
Package / Case	SMA In-Line Module
RoHS Status	RoHS Compliant
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitute parts for the AT-107V are evaluated based on the following critical parameters:

Attenuation Value: Must be 7dB (±0.5dB tolerance acceptable for functional equivalence)
Frequency Range: Must cover or exceed 0 Hz ~ 18 GHz minimum operating band
Impedance: Must be 50 Ohms
Power Rating: Must support minimum 2W continuous operation
Package / Case: Must be SMA In-Line Module configuration
Connector Type: SMA connectors required for mechanical and electrical compatibility

Substitute parts are grouped into two categories:

Full Equivalents (0 Hz ~ 18 GHz, 7dB, 2W): M3933/16-09S meets all electrical and mechanical specifications of the AT-107V.

Functional Equivalents with Frequency Limitations (0 Hz ~ 12.4 GHz, 7dB, 2W): M3933/25-33N provides equivalent attenuation and power handling but operates within a reduced frequency range suitable for applications not requiring full 18 GHz coverage.

Functional Equivalents with Attenuation Variance (0 Hz ~ 18 GHz, 7.5dB, 2W): M3933/16-24N provides full frequency coverage and power rating with 0.5dB attenuation variance.

Limited Frequency Range Equivalents (0 Hz ~ 2 GHz, 7dB, 2W): M3933/25-07N suitable only for low-frequency applications below 2 GHz.

Reduced Frequency Range Equivalents (0 Hz ~ 12.4 GHz, 7dB): M3933/14-10N and M3933/14-10S lack specified power rating data and operate within 12.4 GHz maximum frequency.

Military Grade Equivalent (0 Hz ~ 18 GHz, 7dB): M3933/16-09N meets full frequency specification with MIL-DTL-M3933 qualification but lacks specified power rating.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation Value	Frequency Range	Impedance	Power (Watts)	Package / Case	Product Status	RoHS Status
AT-107V	Hirose Electric Co Ltd	7dB	0 Hz ~ 18 GHz	50 Ohms	2W	SMA In-Line Module	Last Time Buy	RoHS Compliant
M3933/16-09S	Cinch Connectivity Solutions Midwest Microwave	7dB	0 Hz ~ 18 GHz	50 Ohms	2W	SMA In-Line Module	Active	RoHS non-compliant
M3933/16-24N	Cinch Connectivity Solutions Midwest Microwave	7.5dB	0 Hz ~ 18 GHz	50 Ohms	2W	SMA In-Line Module	Active	RoHS non-compliant
M3933/25-33N	Cinch Connectivity Solutions Midwest Microwave	7dB	0 Hz ~ 12.4 GHz	50 Ohms	2W	SMA In-Line Module	Active	RoHS non-compliant
M3933/16-09N	Cinch Connectivity Solutions Midwest Microwave	7dB	0 Hz ~ 18 GHz	50 Ohms	Not Specified	SMA In-Line Module	Active	RoHS non-compliant
M3933/25-07N	Cinch Connectivity Solutions Midwest Microwave	7dB	0 Hz ~ 2 GHz	50 Ohms	2W	SMA In-Line Module	Active	RoHS non-compliant
M3933/14-10N	Cinch Connectivity Solutions Midwest Microwave	7dB	0 Hz ~ 12.4 GHz	50 Ohms	Not Specified	SMA In-Line Module	Active	RoHS non-compliant
M3933/14-10S	Cinch Connectivity Solutions Midwest Microwave	7dB	0 Hz ~ 12.4 GHz	50 Ohms	Not Specified	SMA In-Line Module	Active	RoHS non-compliant

Engineering Selection Recommendations

Primary Substitute: M3933/16-09S is the direct functional equivalent to AT-107V, matching all electrical specifications (7dB, 0 Hz ~ 18 GHz, 50 Ohms, 2W) and mechanical package. This part is in Active product status with current inventory availability. Note that M3933/16-09S is RoHS non-compliant, which may impact applications subject to RoHS regulatory requirements.

Secondary Substitute for Full Frequency Coverage: M3933/16-24N provides complete frequency range coverage (0 Hz ~ 18 GHz) and 2W power handling with 7.5dB attenuation. The 0.5dB attenuation variance must be evaluated against circuit design tolerances. This part is Active status with available inventory.

Substitute for Frequency-Limited Applications: M3933/25-33N is suitable for applications operating below 12.4 GHz, providing exact 7dB attenuation and 2W power rating. This part is Active status with high inventory availability (1104 Pcs).

Military Grade Option: M3933/16-09N meets full frequency specification with MIL-DTL-M3933 qualification for applications requiring military-grade components. Power rating is not specified in available data; verification with manufacturer is required before selection for 2W applications.

Not Recommended: M3933/14-10N, M3933/14-10S, and M3933/25-07N have significant limitations. The M3933/14 series lacks power rating specification and operates only to 12.4 GHz. The M3933/25-07N is restricted to 0 Hz ~ 2 GHz operation, unsuitable for broadband RF applications.

Frequently Asked Questions (FAQ)

Q: Can M3933/16-24N (7.5dB) be used as a direct replacement for AT-107V (7dB)?

A: M3933/16-24N is functionally equivalent for full frequency range applications but introduces 0.5dB additional attenuation. Circuit design must accommodate this variance. Acceptable only if design specifications allow ±0.5dB attenuation tolerance.

Q: What is the impact of RoHS non-compliance in substitute parts?

A: All Cinch Connectivity Solutions Midwest Microwave M3933 series substitutes are RoHS non-compliant. Applications subject to RoHS directives (EU, California, or customer-mandated) cannot use these substitutes. Verify regulatory requirements before selection.

Q: Is M3933/16-09N suitable for 2W applications?

A: M3933/16-09N power rating is not specified in available documentation. Confirmation from manufacturer is required before use in 2W applications. Contact Cinch Connectivity Solutions Midwest Microwave for power handling specifications.

Q: Can M3933/25-33N replace AT-107V in all applications?

A: M3933/25-33N is suitable only for applications operating at frequencies below 12.4 GHz. It cannot be used in designs requiring full 0 Hz ~ 18 GHz coverage. Verify application frequency requirements before selection.

Q: Are all substitutes mechanically compatible with SMA connectors?

A: Yes. All substitute parts listed use SMA In-Line Module configuration, providing mechanical and electrical compatibility with standard SMA connector systems.

Q: What inventory status should influence part selection?

A: M3933/16-09S (756 Pcs), M3933/25-33N (1104 Pcs), and M3933/16-24N (747 Pcs) have adequate current inventory. M3933/14-10N and M3933/14-10S have higher inventory (1107-1108 Pcs) but lack power rating specification. Verify long-term availability with supplier for production planning.

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