RF Attenuator AT-514(40) 14dB 50 Ohm BNC Equivalent & Substitute Parts

Part Overview

The AT-514(40) is a 14dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for in-line attenuation applications across 0 Hz to 4 GHz frequency range with 50 Ohm impedance and 2W power handling capability. This part carries Last Time Buy status, indicating discontinued production. Identifying equivalent and substitute parts ensures design continuity and supply chain reliability for applications requiring 14dB or compatible attenuation values in BNC connector configurations.

Key Parameters

Parameter	AT-514(40) Specification
Attenuation Value	14dB
Frequency Range	0 Hz ~ 4 GHz
Impedance	50 Ohms
Power Rating	2W
Package / Case	BNC In-Line Module
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the AT-514(40) is determined by the following critical parameters: attenuation value (14dB primary requirement), impedance (50 Ohms), power rating (2W minimum), package type (BNC In-Line Module), and frequency range compatibility (minimum 0 Hz ~ 4 GHz coverage).

Parts are grouped into two categories:

Direct Equivalents (14dB Attenuation): Parts with identical 14dB attenuation matching the original specification. These include CT3369A-14, 4108-14DB, R412414000, and R414414000. All maintain 50 Ohm impedance, 2W power handling, and BNC in-line configuration.

Compatible Alternatives (15dB Attenuation): Parts with 15dB attenuation represent a functional alternative where 1dB additional attenuation is acceptable for the application. These include ATT-0313-15-BNC-10, PE7437-15, R412415000, and R414415000. These parts maintain identical impedance, power rating, and connector type while operating within compatible frequency ranges.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation	Frequency Range	Impedance	Power	Package	Product Status	RoHS Status
AT-514(40)	Hirose Electric Co Ltd	14dB	0 Hz ~ 4 GHz	50 Ohms	2W	BNC In-Line Module	Last Time Buy	RoHS Compliant
CT3369A-14	Cal Test Electronics	14dB	0 Hz ~ 4 GHz	50 Ohms	2W	BNC In-Line Module	Active	ROHS3 Compliant
4108-14DB	Pomona Electronics	14dB	0 Hz ~ 8 GHz	50 Ohms	2W	BNC In-Line Module	Active	ROHS3 Compliant
R412414000	Radiall USA, Inc.	14dB	0 Hz ~ 2 GHz	50 Ohms	2W	BNC In-Line Module	Active	Not Specified
R414414000	Radiall USA, Inc.	14dB	0 Hz ~ 8 GHz	50 Ohms	2W	BNC In-Line Module	Active	Not Specified
ATT-0313-15-BNC-10	Cinch Connectivity Solutions Midwest Microwave	15dB	0 Hz ~ 4 GHz	50 Ohms	2W	BNC In-Line Module	Active	RoHS Compliant
PE7437-15	Pasternack	15dB	0 Hz ~ 4 GHz	50 Ohms	2W	BNC In-Line Module	Active	RoHS Compliant
R412415000	Radiall USA, Inc.	15dB	0 Hz ~ 2 GHz	50 Ohms	2W	BNC In-Line Module	Active	Not Specified
R414415000	Radiall USA, Inc.	15dB	0 Hz ~ 8 GHz	50 Ohms	2W	BNC In-Line Module	Active	Not Specified

Engineering Selection Recommendations

Primary Substitutes (14dB Direct Equivalents):

CT3369A-14 and 4108-14DB are preferred direct replacements. Both are Active status parts with full RoHS3 compliance. CT3369A-14 matches the original 0 Hz ~ 4 GHz frequency range exactly. The 4108-14DB extends frequency coverage to 8 GHz, providing broader operational capability without performance degradation at the original 4 GHz specification.

R414414000 offers 14dB attenuation with extended 8 GHz frequency range and Active status, suitable for applications requiring higher frequency headroom.

R412414000 provides 14dB attenuation with Active status but operates only to 2 GHz, limiting its use to lower frequency applications.

Secondary Alternatives (15dB Compatible Substitutes):

PE7437-15 and ATT-0313-15-BNC-10 are Active status parts with RoHS compliance, offering 15dB attenuation. These are suitable where 1dB additional attenuation is functionally acceptable. Both maintain 0 Hz ~ 4 GHz frequency coverage matching the original specification.

R414415000 provides 15dB attenuation with 8 GHz frequency extension and Active status.

R412415000 operates to 2 GHz with 15dB attenuation and Active status.

All substitute parts maintain 50 Ohm impedance, 2W power rating, and BNC in-line module configuration, ensuring mechanical and electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use a 15dB attenuator as a substitute for the 14dB AT-514(40)?

A: Yes, if your application tolerates 1dB additional attenuation. The 15dB parts (PE7437-15, ATT-0313-15-BNC-10, R412415000, R414415000) maintain identical impedance, power rating, connector type, and frequency range compatibility. Verify that the additional 1dB attenuation does not exceed your system's signal loss budget.

Q: What is the difference between the 14dB substitutes in terms of frequency range?

A: CT3369A-14 and R412414000 operate to 4 GHz and 2 GHz respectively, matching or limiting the original specification. The 4108-14DB and R414414000 extend to 8 GHz, providing additional frequency headroom. Select based on your application's maximum operating frequency requirement.

Q: Are all substitute parts RoHS compliant?

A: CT3369A-14 and 4108-14DB carry ROHS3 compliance. PE7437-15 and ATT-0313-15-BNC-10 are RoHS Compliant. Radiall parts (R412414000, R414414000, R412415000, R414415000) do not specify RoHS status in available data. Verify compliance requirements with your procurement or quality department.

Q: Do all substitutes use the same BNC connector configuration?

A: Yes. All listed substitute parts use BNC In-Line Module packaging, ensuring mechanical compatibility with existing designs and connectors.

Q: Which substitute offers the best overall compatibility?

A: CT3369A-14 provides direct 14dB equivalence with identical 0 Hz ~ 4 GHz frequency range, Active product status, and ROHS3 compliance. The 4108-14DB offers identical attenuation with extended 8 GHz frequency coverage and Active status, suitable for future-proofing designs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message