Product details

RF Connectors / Coaxial Connectors BNC Blkhd Cable Jack 50Ohm Rear Mt Solder

Name: BJ21
SKU: BJ21

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

Part number (MPN)

BJ21

Impedance

50 Ohms

Frequency

500 MHz

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

BJ21

Specifications for BJ21
Interface	RF Connectors / Coaxial Connectors
Interface	BNC
Impedance	50 Ohms
Frequency (max)	-
Frequency (max)	500 MHz
Gender	Jack (Female)
Orientation	Straight
Body Style	Bulkhead
Termination	Solder
Product	Connectors
Product Category	RF Connectors / Coaxial Connectors
Unit Weight	0.317466 oz

Show 3 more specs

Subcategory	RF Interconnects
Body Finish	Nickel
RoHS	Y

Description

Current reference data for BJ21: 50 Ohms · 500 MHz · Straight. The catalog currently lists the configuration as: Straight · Solder. Impedance is listed as 50 Ohms. If that parameter is critical, confirm it again in RFQ. Frequency is listed as 500 MHz. The real operating limit still depends on the assembly, mating pair, and application context. For higher-frequency projects, include the drawing, cable path, and critical requirements in the first RFQ. If mounting is missing here, confirm it from the drawing or mating requirement. 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).

Need a brand replacement workflow? Open the general brief → Need an approved alternative or cost-down workflow? Open the procurement brief →

Related RF sourcing routes

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

Brand replacement briefs SMA alternatives from China BNC connector equivalents N Type RF replacement Custom RF cable from drawing

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Engineer checklist (key parameters)

Interface BNC

Gender Jack (Female)

Orientation Straight

Impedance 50 Ohms

Frequency (max) 500 MHz

Termination Solder

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

FAQ

What is the impedance of BJ21?

Our catalog lists the impedance for BJ21 as: 50 Ohms. If impedance is critical for your application, include the requirement in your RFQ and we will confirm.

What frequency is BJ21 rated for?

Our catalog lists the frequency for BJ21 as: 500 MHz. Actual performance depends on assembly/materials/application — send an RFQ so we can confirm a suitable option.

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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.