Product details

This SMA female to female feed thru bulkhead coupler provides the ability to pass a coaxial connection through a panel or bulkhead utilizing a standard .300" single D mounting hole. A common use for this device is to create a connection point on either side of a wall or other obstruction.

Name: BA21
SKU: BA21

China-sourced compatible alternative — fit confirmed by drawing/spec review.

Part number (MPN)

BA21

Impedance

50 Ohm

Frequency

Interface

SMA

Need a custom version from drawing?

We coordinate supplier-qualified RF connector and cable assembly sourcing from drawings, samples, or BOM. Typical production lead time is 3–6 weeks after drawing/spec review; feasibility, MOQ, and fit are confirmed by RFQ.

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Lead time: 3–6 wks | MOQ: 200+ pcs

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• Share the reference MPN and source brand if it matters.
• Add the BOM and volume split for production projects.
• Attach the drawing or the key fit requirements.

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Specifications

BA21

Specifications for BA21
Interface	SMA
Interface	Coaxial Adapters
Interface	SMA
Interface	SMA
Impedance	50 Ohm
Impedance	50 Ohm
Impedance	50 Ohms
Frequency (max)	DC
Frequency (max)	6 GHz
Frequency (max)	6 GHz
Gender	Female
Gender	Female

Show 16 more specs

Orientation	Bulkhead
Adapter Body Style	Straight
Connector Body Material 1	Brass
Connector Body Material 2	Brass
Body Material	Brass
Connector Body Plating 1	Nickel
Connector Body Plating 2	Nickel
Termination	Gold
Connector Polarity 1	Standard
Connector Polarity 2	Standard
Mounting	Bulkhead
Mounting	None
Category	Coaxial Adapters
Application	Coax retrofit applications
Product Features	Complete with nut, gasket and lockwasher mounting hardware
Compliance	RoHS Compliant By Exemption

Description

Current reference data for BA21: SMA · 50 Ohm · DC. The catalog currently lists the configuration as: Bulkhead. Impedance is listed as 50 Ohm. If that parameter is critical, confirm it again in RFQ. Frequency is listed as DC. The real operating limit still depends on the assembly, mating pair, and application context. Mounting is listed as Bulkhead. If panel, bulkhead, or flange constraints matter, send the dimensions with the RFQ. Material is listed as Brass. That is useful for review, but it does not replace full project stack-up confirmation. Use this page to shortlist before RFQ, not as the final sign-off.

Use this page to shortlist before RFQ. MOQ 200+ custom production and supply path are confirmed after drawing/spec/BOM review; no spot stock is assumed.

Request Quote (RFQ)

Cstone is a professional factory—not a trading company—specializing in RF and coaxial connectors, adapters, and cable assemblies, including N-type, BNC, SMA, SMP, SSMB, MMCX, and more. We manufacture custom connectors to 2D drawings or samples; fit, MOQ, lead time, and production details are confirmed by RFQ. Factory-made production to 2D drawings or samples; MOQ 200+ and typical 3–6 week lead time are confirmed after drawing/spec/BOM review. Physical inventory is not promised; production details are confirmed by RFQ.

Drawing / spec review MOQ / lead-time check RF connectors Adapters Cable assemblies

Why work with us?

Form-Fit-Function compatibility confirmed by drawing/spec review
Commercially competitive alternative for replacement and sourcing projects
MOQ 200+ and lead time confirmed by model, quantity, and supply path

Working hours: 10:00–20:00 (Beijing Time, UTC+8)

We typically reply within 1 business day (subject to workload and time zones).

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Related RF sourcing routes

If this MPN is only a reference point, continue with a replacement, equivalent, adapter, or drawing-based cable assembly review.

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Engineer checklist (key parameters)

Interface SMA

Gender Female

Orientation Bulkhead

Impedance 50 Ohm

Frequency (max) DC

Mounting Bulkhead

If these parameters are critical, include them in the RFQ.

FAQ

What connector interface/type does BA21 use?

According to our catalog data, BA21 lists the interface/type as: SMA. To confirm mechanical fit, send an RFQ and we will validate against your drawing/spec.

What is the impedance of BA21?

Our catalog lists the impedance for BA21 as: 50 Ohm. If impedance is critical for your application, include the requirement in your RFQ and we will confirm.

What mounting style does BA21 use?

Our catalog lists the mounting style for BA21 as: Bulkhead. If you have panel/bulkhead/flange constraints, attach a drawing in the RFQ.

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Disclaimer

Manufacturer names, trademarks, symbols, and part numbers are used for identification and cross-reference only. Cstone Technology operates its own factory for RF/coaxial connectors, adapters, and cable assemblies and is not a trading company or affiliated with the original brands. Trademarks remain the property of their respective owners. Final suitability is confirmed by drawing/spec review during RFQ.