Product details

RF Connectors / Coaxial Connectors BNC BLKD JK INSL Rear MNT

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

Part number (MPN)

UBJ21

Impedance: 75 Ohms Frequency: 500 MHz

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Lead time: 3–6 wks | MOQ: from 100 pcs

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Specifications

UBJ21

Specifications for UBJ21
Interface	RF Connectors / Coaxial Connectors
Interface	BNC
Impedance	75 Ohms
Frequency (max)	-
Frequency (max)	500 MHz
Gender	Jack (Female)
Orientation	Straight
Body Style	Bulkhead
Termination	Crimp
Body Material	Brass
Termination	Gold
Product	Connectors

Show 4 more specs

Product Category	RF Connectors / Coaxial Connectors
Subcategory	RF Interconnects
Body Finish	Nickel
RoHS	Y

Description

Current reference data for UBJ21: 75 Ohms · 500 MHz · Straight. The catalog currently lists the configuration as: Straight · Crimp. Impedance is listed as 75 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. 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.

Request Quote (RFQ)

RF/coax connectors, adapters, and cable assemblies reviewed against your drawing, spec, or BOM.

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

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Engineer checklist (key parameters)

Interface BNC

Gender Jack (Female)

Orientation Straight

Impedance 75 Ohms

Frequency (max) 500 MHz

Termination Crimp

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

FAQ

What is the impedance of UBJ21?

Our catalog lists the impedance for UBJ21 as: 75 Ohms. If impedance is critical for your application, include the requirement in your RFQ and we will confirm.

What frequency is UBJ21 rated for?

Our catalog lists the frequency for UBJ21 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 is a China-based export sourcing partner for compatible alternatives and is not affiliated with the original brands. Trademarks remain the property of their respective owners. Final suitability is confirmed by drawing/spec review during RFQ.