AT-114V RF Attenuator 14dB 50 Ohm SMA Equivalent & Substitute Parts

Part Overview

The AT-114V is a 14dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for 50 ohm systems operating across 0 Hz to 18 GHz with 2W power handling capability in an SMA in-line module configuration. This part is designated as Last Time Buy, indicating limited availability. Equivalent and substitute parts are identified based on matching electrical specifications (attenuation value, frequency range, impedance, power rating) and mechanical compatibility (SMA connector interface).

Key Parameters

Parameter	AT-114V Specification
Attenuation Value	14dB
Frequency Range	0 Hz ~ 18 GHz
Impedance	50 Ohms
Power Rating	2W
Package / Case	SMA In-Line Module
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical parameter alignment with the AT-114V:

Category 1: Full Electrical Equivalents (14dB, 0-18 GHz, 2W) Parts matching all critical electrical parameters: 14dB attenuation, 0 Hz to 18 GHz frequency range, 2W power handling, and 50 ohm impedance. These parts provide direct functional replacement with identical RF performance characteristics.

Category 2: Parametric Equivalents with Frequency Limitation (14dB, 0-12.4 GHz) Parts matching attenuation and impedance but with reduced frequency range (0 Hz to 12.4 GHz). These are suitable for applications operating within the 12.4 GHz upper frequency limit.

Category 3: Attenuation Variants (15dB, 0-18 GHz, 2W) Parts with 15dB attenuation instead of 14dB but matching frequency range, power rating, and impedance. Selection requires confirmation that 15dB attenuation meets application requirements.

All substitute parts maintain 50 ohm impedance and SMA in-line module mechanical interface compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation	Frequency Range	Power (Watts)	Impedance	Package / Case	RoHS Status	Product Status
AT-114V	Hirose Electric Co Ltd	14dB	0 Hz ~ 18 GHz	2W	50 Ohms	SMA In-Line Module	RoHS Compliant	Last Time Buy
M3933/16-34N	Cinch Connectivity Solutions Midwest Microwave	14dB	0 Hz ~ 18 GHz	2W	50 Ohms	SMA In-Line Module	RoHS non-compliant	Active
M3933/16-34S	Cinch Connectivity Solutions Midwest Microwave	14dB	0 Hz ~ 18 GHz	2W	50 Ohms	SMA In-Line Module	RoHS non-compliant	Active
M3933/14-19N	Cinch Connectivity Solutions Midwest Microwave	14dB	0 Hz ~ 12.4 GHz	—	50 Ohms	SMA In-Line Module	RoHS non-compliant	Active
M3933/14-19S	Cinch Connectivity Solutions Midwest Microwave	14dB	0 Hz ~ 12.4 GHz	—	50 Ohms	SMA In-Line Module	RoHS non-compliant	Active
AT-115V	Hirose Electric Co Ltd	15dB	0 Hz ~ 18 GHz	2W	50 Ohms	SMA In-Line Module	RoHS Compliant	Last Time Buy
M3933/14-05N	Cinch Connectivity Solutions Midwest Microwave	15dB	0 Hz ~ 12.4 GHz	—	50 Ohms	SMA In-Line Module	RoHS non-compliant	Active
M3933/14-05S	Cinch Connectivity Solutions Midwest Microwave	15dB	0 Hz ~ 12.4 GHz	—	50 Ohms	SMA In-Line Module	RoHS non-compliant	Active
M3933/16-36N	Cinch Connectivity Solutions Midwest Microwave	15dB	0 Hz ~ 18 GHz	2W	50 Ohms	SMA In-Line Module	RoHS non-compliant	Active

Engineering Selection Recommendations

For RoHS Compliance Requirements: AT-115V (Hirose Electric Co Ltd) is the only RoHS-compliant substitute with full electrical equivalence to AT-114V specifications (14dB attenuation, 0-18 GHz, 2W, 50 ohms). This part maintains active product status and is recommended when regulatory compliance is mandatory.

For Full Electrical Equivalence with Active Status: M3933/16-34N and M3933/16-34S (Cinch Connectivity Solutions Midwest Microwave) provide identical electrical specifications to AT-114V (14dB, 0-18 GHz, 2W, 50 ohms) with active product status. These parts are suitable for applications where RoHS non-compliance is acceptable.

For Frequency-Limited Applications: M3933/14-19N and M3933/14-19S are suitable only for systems operating at or below 12.4 GHz. These parts maintain 14dB attenuation and 50 ohm impedance but do not support the full 18 GHz upper frequency limit of AT-114V.

For Attenuation Tolerance: M3933/16-36N and AT-115V provide 15dB attenuation across 0-18 GHz with 2W power handling. Selection requires confirmation that 1dB additional attenuation meets circuit design requirements.

Frequently Asked Questions (FAQ)

Q: Can M3933/14-19N or M3933/14-19S replace AT-114V in all applications? A: No. These parts are limited to 12.4 GHz operation. They are suitable only for applications operating within this frequency range. AT-114V supports 0-18 GHz operation.

Q: What is the difference between M3933/16-34N and M3933/16-34S? A: Both parts provide identical electrical specifications (14dB, 0-18 GHz, 2W, 50 ohms). The designation suffix indicates packaging variation. Verify packaging requirements for your application.

Q: Is AT-115V a direct replacement for AT-114V? A: AT-115V matches all mechanical and frequency specifications but provides 15dB attenuation instead of 14dB. It is electrically compatible only if your circuit design accommodates 1dB additional signal loss.

Q: Why are Cinch M3933 series parts marked RoHS non-compliant? A: RoHS compliance status is determined by manufacturing process and material composition. If your application requires RoHS compliance, select AT-115V or confirm exemption applicability with your procurement department.

Q: Can I use parts with unspecified power ratings as replacements? A: Parts with unspecified power ratings (shown as "—") should be evaluated against your application's power handling requirements. AT-114V is rated for 2W continuous operation. Verify power specifications with the manufacturer before selection.

Q: Are all substitute parts mechanically compatible with AT-114V? A: Yes. All listed substitute parts use SMA in-line module connectors, providing mechanical compatibility. Verify connector gender and orientation requirements for your specific application.

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